WO2002018620A2 - Neutrokine-alpha et variant d'epissage de neutrokine-alpha - Google Patents

Neutrokine-alpha et variant d'epissage de neutrokine-alpha Download PDF

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WO2002018620A2
WO2002018620A2 PCT/US2001/025549 US0125549W WO0218620A2 WO 2002018620 A2 WO2002018620 A2 WO 2002018620A2 US 0125549 W US0125549 W US 0125549W WO 0218620 A2 WO0218620 A2 WO 0218620A2
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neutrokine
antibody
alpha
seq
polypeptide
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PCT/US2001/025549
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WO2002018620A3 (fr
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Guo-Liang Yu
Reinhard Ebner
Jian Ni
Craig A. Rosen
Stephen Ullrich
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Human Genome Sciences, Inc.
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Priority to AU2001288260A priority Critical patent/AU2001288260A1/en
Priority to CA002419661A priority patent/CA2419661A1/fr
Priority to EP01967981A priority patent/EP1309718A4/fr
Publication of WO2002018620A2 publication Critical patent/WO2002018620A2/fr
Publication of WO2002018620A3 publication Critical patent/WO2002018620A3/fr

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/52—Cytokines; Lymphokines; Interferons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
    • A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
    • A61K47/68—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
    • A61K47/6835—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site
    • A61K47/6849—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment the modifying agent being an antibody or an immunoglobulin bearing at least one antigen-binding site the antibody targeting a receptor, a cell surface antigen or a cell surface determinant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K49/00—Preparations for testing in vivo
    • A61K49/0004—Screening or testing of compounds for diagnosis of disorders, assessment of conditions, e.g. renal clearance, gastric emptying, testing for diabetes, allergy, rheuma, pancreas functions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00—Drugs for immunological or allergic disorders
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
    • C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • C07K16/24—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against cytokines, lymphokines or interferons
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
    • G01N33/564—Immunoassay; Biospecific binding assay; Materials therefor for pre-existing immune complex or autoimmune disease, i.e. systemic lupus erythematosus, rheumatoid arthritis, multiple sclerosis, rheumatoid factors or complement components C1-C9
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2317/00—Immunoglobulins specific features
    • C07K2317/20—Immunoglobulins specific features characterized by taxonomic origin
    • C07K2317/21—Immunoglobulins specific features characterized by taxonomic origin from primates, e.g. man
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2317/00—Immunoglobulins specific features
    • C07K2317/60—Immunoglobulins specific features characterized by non-natural combinations of immunoglobulin fragments
    • C07K2317/62—Immunoglobulins specific features characterized by non-natural combinations of immunoglobulin fragments comprising only variable region components
    • C07K2317/622—Single chain antibody (scFv)

Definitions

  • the present invention relates to a novel cytokine which has been designated Neutrokine-alpha ("Neutrokine-alpha").
  • Neutrokine-alpha an apparent splicing variant of Neutrokine-alpha has been identified and designated Neutrokine-alphaSV.
  • the present invention provides nucleic acid molecules encoding Neutrokine-alpha and Neutrokine-alphaSV polypeptides.
  • Neutrokine-alpha and Neutrokine-alphaSV polypeptides are also provided, as are vectors, host cells and recombinant methods for producing the same.
  • TNF-alpha and TNF-beta are related members of a broad class of polypeptide mediators, which includes the interferons, interleukins and growth factors, collectively called cytokines (Beutler, B. and Cerami, A., Annu. Rev. Immunol. 7:625-655 (1989)).
  • cytokine receptors Sequence analysis of cytokine receptors has defined several subfamilies of membrane proteins (1) the Ig superfamily, (2) the hematopoietin (cytoldne receptor superfamily) and (3) the tumor necrosis factor (TNF)/nerve growth factor (NGF) receptor superfamily (for review of TNF superfamily see, Grass and Dower, Blood 85(12) .-3378-3404 (1995) and Aggarwal and Natarajan, Eur. Cytokine Netw., 7(2):93-124 (1996)).
  • TNF/NGF receptor superfamily contains at least 10 different proteins. Gruss and Dower, supra. Ligands for these receptors have been identified and belong to at least two cytokine superfamilies. Gruss and Dower, supra.
  • Tumor necrosis factor (a mixture of TNF-alpha and TNF-beta) was originally discovered as a result of its anti-tumor activity, however, now it is recognized as a pleiotropic cytokine capable of numerous biological activities including apoptosis of some transformed cell lines, mediation of cell activation and proliferation and also as playing important roles in immune regulation and inflammation.
  • known members of the TNF-ligand superfamily include TNF-alpha, TNF-beta (lymphotoxin-alpha), LT-beta, OX40L, Fas ligand, CD30L, CD27L, CD40L and 4-IBBL.
  • the ligands of the TNF ligand superfamily are acidic, TNF-like molecules with approximately 20% sequence homology in the extracellular domains (range, 12%-36%) and exist mainly as membrane-bound forms with the biologically active form being a trimeric/multimeric complex. Soluble forms of the TNF ligand superfamily have only been identified so far for TNF, LT-beta, and Fas ligand (for a general review, see Gruss, H. and Dower, S.K., Blood, 85(12) :3378-3404 (1995)), which is hereby incorporated by reference in its entirety.
  • Tumor necrosis factor-alpha (TNF-alpha; also termed cachectin; hereinafter "TNF") is secreted primarily by monocytes and macrophages in response to endotoxin or other stimuli as a soluble homotrimer of 17 kD protein subunits (Smith, R.A. et al, J. Biol. Chem. 262:6951-6954 (1987)). A membrane-bound 26 kD precursor form of TNF has also been described (Kriegler, M. et al, Cell 53:45-53 (1988)).
  • TNF is a regulatory cytokine with pleiotropic biological activities. These activities include: inhibition of lipoprotein lipase synthesis ("cachectin” activity) (Beutler, B. et al, Nature 316:552 (1985)), activation of polymorphonuclear leukocytes (Klebanoff, S.J. et al, J. Immunol. 136:4220 (1986); Perussia, B., et al, J. Immunol 138:765 (1987)), inhibition of cell growth or stimulation of cell growth (Vilcek, J. et al, J. Exp. Med. 163:632 (1986); Sugarman, B. J.
  • TNF major histocompatibility complex
  • MHC major histocompatibility complex
  • TNF is noted for its pro-inflammatory actions which result in tissue injury, such as induction of procoagulant activity on vascular endothelial cells (Pober, J.S. et al, J. Immunol 136:1680 (1986)), increased adherence of neutrophils and lymphocytes (Pober, J.S.
  • Cachexia The extensive wasting which results is known as "cachexia” (Kern, K. A. et al. I. Parent. Enter. Nutr. 72:286-298 (1988)). Cachexia includes progressive weight loss, anorexia, and persistent erosion of body mass in response to a malignant growth. The cachectic state is thus associated with significant morbidity and is responsible for the majority of cancer mortality. A number of studies have suggested that TNF is an important mediator of the cachexia in cancer, infectious pathology, and in other catabolic states.
  • TNF is thought to play a central role in the pathophysioiogical consequences of Gram-negative sepsis and endotoxic shock (Michie, H.R. et al, Br. I. Surg. 76: 670-671 (1989); Debets, J. M. H. et al, Second Vienna Shock Forum, p.463-466 (1989); Simpson, S. Q. et al, Crit. Care Clin. 5:27-47 (1989)), including fever, malaise, anorexia, and cachexia.
  • Endotoxin is a potent monocyte/macrophage activator which stimulates production and secretion of TNF (Kornbluth, S.K. et al, I.
  • TNF could mimic many biological effects of endotoxin, it was concluded to be a central mediator responsible for the clinical manifestations of endotoxin-related illness. TNF and other monocyte-derived cytokines mediate the metabolic and neurohormonal responses to endotoxin (Michie, H.R. et al, N. Eng. J. Med. 318: 1481-1486 (1988)). Endotoxin administration to human volunteers produces acute illness with flu-like symptoms including fever, tachycardia, increased metabolic rate and stress hormone release (Revhaug, A. et al, Arch. Surg. 123:162-170 (1988)).
  • Elevated levels of circulating TNF have also been found in patients suffering from Gram-negative sepsis (Waage, A. et al, Lancet 7:355-357 (1987); Hammerle, A.F. et al, Second Vienna Shock Forum p. 715-718 (1989); Debets, J. M. H. et al, Crit. Care Med. 77:489-497 (1989); Calandra, T. et al, J. Infec. Dis. 161:982-987 (1990)).
  • Passive immunotherapy directed at neutralizing TNF may have a beneficial effect in Gram-negative sepsis and endotoxemia, based on the increased TNF production and elevated TNF levels in these pathology states, as discussed above.
  • Antibodies to a "modulator" material which was characterized as cachectin (later found to be identical to TNF) were disclosed by Cerami et al. (EPO Patent Publication 0,212,489, March 4, 1987). Such antibodies were said to be useful in diagnostic immunoassays and in therapy of shock in bacterial infections.
  • Rubin et al (EPO Patent Publication 0,218,868, April 22, 1987) disclosed monoclonal antibodies to human TNF, the hybridomas secreting such antibodies, methods of producing such antibodies, and the use of such antibodies in immunoassay of TNF.
  • Yone et al. (EPO Patent Publication 0,288,088, October 26, 1988) disclosed anti-TNF antibodies, including mAbs, and their utility in immunoassay diagnosis of pathologies, in particular Kawasaki's pathology and bacterial infection.
  • Kawasaki's pathology infantile acute febrile mucocutaneous lymph node syndrome; Kawasaki, T., Allergy 16:178 (1967); Kawasaki, T., Shonica (Pediatrics) 26:935 (1985)) were said to contain elevated TNF levels which were related to progress of the pathology (Yone et al, supra).
  • TNF neutralizing antibodies Some of these mAbs were used to map epitopes of human TNF and develop enzyme immunoassays (Fendly et al, supra; Hirai et al, supra; Moller et al, supra) and to assist in the purification of recombinant TNF (Bringman et al, supra). However, these studies do not provide a basis for producing TNF neutralizing antibodies that can be used for in vivo diagnostic or therapeutic uses in humans, due to immunogenicity, lack of specificity and/or pharmaceutical suitability.
  • Apoptosis plays a critical role in the destruction of immune thymocytes that recognize self antigens. Failure of this normal elimination process may play a role in autoimmune diseases (Gammon et al, Immunology Today 12:193 (1991)).
  • Fas/CD95 a cell surface antigen that mediates apoptosis and is involved in clonal deletion of T-cells. Fas is expressed in activated T-cells, B-cells, neutrophils and in thymus, liver, heart and lung and ovary in adult mice (Watanabe-Fukunaga et al, I. Immunol. 148:1214 (1992)) in addition to activated T-cells, B-cells, neutrophils. In experiments where a monoclonal Ab is cross-linked to Fas, apoptosis is induced (Yonehara et al, J. Exp. Med.
  • Fas antigen is a cell surface protein of relative MW of 45 Kd. Both human and murine genes for Fas have been cloned by Watanabe-Fukunaga et al., (J. Immunol. 148:1214 (1992)) and Itoh et al (Cell 66:233 (1991)).
  • the proteins encoded by these genes are both transmembrane proteins with structural homology to the Nerve Growth Factor/Tumor Necrosis Factor receptor superfamily, which includes two TNF receptors, the low affinity Nerve Growth Factor receptor and CD40, CD27, CD30, and OX40.
  • the amino acid sequence indicates that Fas ligand is a type U transmembrane protein belonging to the TNF family.
  • the Fas ligand polypeptide comprises three main domains: a short intracellular domain at the amino terminal end and a longer extracellular domain at the carboxy terminal end, connected by a hydrophobic transmembrane domain. Fas ligand is expressed in splenocytes and thymocytes, consistent with T-cell mediated cytotoxicity.
  • the purified Fas ligand has a MW of 40 kD.
  • Fas/Fas ligand interactions are required for apoptosis following the activation of T-cells (Ju et al., Nature 373:444 (1995); Brunner et al, Nature 373:441 (1995)).
  • Activation of T-cells induces both proteins on the cell surface.
  • Subsequent interaction between the ligand and receptor results in apoptosis of the cells. This supports the possible regulatory role for apoptosis induced by Fas/Fas ligand interaction during normal immune responses.
  • cytokines similar to TNF that are involved in pathological conditions.
  • Such novel cytokines may be used to make novel antibodies or other antagonists that bind these TNF-like cytokines for diagnosis and therapy of disorders related to TNF-like cytokines.
  • a novel extracellular domain of a Neutrokine-alpha polypeptide and a novel extracellular domain of a Neutrokine-alphaSV polypeptide, as well as biologically active and diagnostically or therapeutically useful fragments, analogs and derivatives thereof.
  • isolated nucleic acid molecules encoding human Neutrokine-alpha or Neutrokine-alphaSV including mRNAs, DNAs, cDNAs, genomic DNAs as well as analogs and biologically active and diagnostically or therapeutically useful fragments and derivatives thereof.
  • the present invention provides isolated nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide encoding a cytokine and an apparent splice variant thereof that are structurally similar to TNF and related cytokines and have similar biological effects and activities.
  • This cytokine is named Neutrokine-alpha and the invention includes Neutrokine-alpha polypeptides having at least a portion of the amino acid sequence in Figures 1A and IB (SEQ ID NO:2) or amino acid sequence encoded by the cDNA clone (HNEDU15) deposited on October 22, 1996 assigned ATCC number 97768.
  • soluble forms of Neutrokine-alpha include all or a portion of the extracellular domain cleaved from the transmembrane domain and a polypeptide comprising the complete Neutrokine-alpha polypeptide lacking the transmembrane domain, i.e., the extracellular domain linked to the intracellular domain.
  • Neutrokine-alphaSV The apparent splice variant of Neutrokine-alpha is named Neutrokine-alphaSV and the invention includes Neutrokine-alphaSV polypeptides comprising, or alternatively, consisting of, at least a portion of the amino acid sequence in Figures 5A and 5B (SEQ ID NO: 19) or amino acid sequence encoded by the cDNA clone HDPMC52 deposited on December 10, 1998 and assigned ATCC number 203518.
  • the nucleotide sequence determined by sequencing the deposited Neutrokine-alphaSV clone which is shown in Figures 5 A and 5B (SEQ ID NO: 18), contains an open reading frame encoding a complete polypeptide of 266 amino acid residues including an N-terminal methionine, a predicted intracellular domain of about 46 amino acid residues, a predicted transmembrane domain of about 26 amino acids, a predicted extracellular domain of about 194 amino acids, and a deduced molecular weight for the complete protein of about 29 kDa.
  • soluble forms of Neutrokine-alphaSV include all or a portion of the extracellular domain cleaved from the transmembrane domain and a polypeptide comprising the complete Neutrokine-alphaSV polypeptide lacking the transmembrane domain, i.e., the extracellular domain linked to the intracellular domain.
  • one embodiment of the invention provides an isolated nucleic acid molecule comprising, or alternatively consisting of, a polynucleotide having a nucleotide sequence selected from the group consisting of: (a) a nucleotide sequence encoding a full-length Neutrokine-alpha polypeptide having the complete amino acid sequence in Figures 1A and IB (SEQ ID NO:2) or as encoded by the cDNA clone contained in the deposit having ATCC accession number 97768; (b) a nucleotide sequence encoding the predicted extracellular domain of the Neutrokine-alpha polypeptide having the amino acid sequence at positions 73 to 285 in Figures 1A and IB (SEQ ID NO:2) or as encoded by the clone contained in the deposit having ATCC accession number 97768; (c) a nucleotide sequence encoding a fragment of the polypeptide of (b) (e.g., amino acids 134-28
  • nucleic acid molecules that comprise, or alternatively consist of, a polynucleotide having a nucleotide sequence at least 80%, 85% or 90% identical, and more preferably at least 95%, 96%, 97%, 98%) or 99% identical, to any of the nucleotide sequences in (a), (b), (c), (d), (e), (f) or (g) above, or a polynucleotide which hybridizes under stringent hybridization conditions to a polynucleotide in (a), (b), (c), (d), (e), (f) or (g) above.
  • Another embodiment of the invention provides an isolated nucleic acid molecule comprising, or alternatively consisting of, a polynucleotide having a nucleotide sequence selected from the group consisting of: (a) a nucleotide sequence encoding a full-length Neutrokine-alphaSV polypeptide having the complete amino acid sequence in Figures 5 A and 5B (SEQ ID NO: 19) or as encoded by the cDNA clone contained in the ATCC Deposit deposited on December 10, 1998 as ATCC Number 203518; (b) a nucleotide sequence encoding the predicted extracellular domain of the Neutrokine-alphaSV polypeptide having the amino acid sequence at positions 73 to 266 in Figures 1 A and IB (SEQ ID NO:2)
  • nucleotide sequence encoding a polypeptide comprising the Neutrokine-alphaSV transmembrane domain (predicted to constitute amino acid residues from about 47 to about 72 in Figures 5 A and 5B (SEQ ID NO: 19) or as encoded by the cDNA clone contained in ATCC No.
  • nucleotide sequence encoding a soluble Neutrokine-alphaSV polypeptide having the extracellular and intracellular domains but lacking the transmembrane domain; and (f) a nucleotide sequence complementary to any of the nucleotide sequences in (a), (b), (c), (d), or (e) above.
  • nucleic acid molecules that comprise, or alternatively consist of, a polynucleotide having a nucleotide sequence at least 80%, 85% or 90% identical, and more preferably at least 95%, 96%, 97%, 98%) or 99% identical, to any of the nucleotide sequences in (a), (b), (c), (d), (e) or (f) above, or a polynucleotide which hybridizes under stringent hybridization conditions to a polynucleotide in (a), (b), (c), (d), (e) or (f) above.
  • the invention includes isolated nucleic acid molecules that comprise, or alternatively consist of, a polynucleotide having a nucleotide sequence encoding the apparent splice variant of Neutrokine-alpha comprising, or alternatively consisting of, at least a portion of the amino acid sequence from Gly-142 to Leu-266 as shown in Figures 5 A and 5B (SEQ ID NO: 19) or amino acid sequence encoded by the cDNA clone HDPMC52 deposited on December 10, 1998 and assigned ATCC Deposit No. 203518.
  • the invention include isolated nucleic acid molecules that comprise, or alternatively consist of, a polynucleotide having a nucleotide sequence encoding the apparent splice variant of Neutrokine-alpha comprising, or alternatively consisting of, at least a portion of the amino acid sequence from Ala- 134 to Leu-266 as shown in Figures 5 A and 5B (SEQ ID NO: 19) or amino acid sequence encoded by the cDNA clone HDPMC52 deposited on December 10, 1998 and assigned ATCC Deposit No. 203518.
  • the nucleic acid molecules of the invention comprise, or alternatively consist of, a polynucleotide which encodes the amino acid sequence of an epitope-bearing portion of a Neutrokine-alpha or Neutrokine-alphaSV polypeptide having an amino acid sequence in (a), (b), (c), (d), (e), (f) or (g) above.
  • a further nucleic acid embodiment of the invention relates to an isolated nucleic acid molecule comprising, or alternatively consisting of, a polynucleotide which encodes the amino acid sequence of a Neutrokine-alpha or Neutrokine-alphaSV polypeptide having an amino acid sequence which contains at least one amino acid addition, substitution, and/or deletion but not more than 50 amino acid additions, substitutions and/or deletions, even more preferably, not more than 40 amino acid additions, substitutions, and/or deletions, still more preferably, not more than 30 amino acid additions, substitutions, and/or deletions, and still even more preferably, not more than 20 amino acid additions, substitutions, and/or deletions.
  • a polynucleotide which encodes the amino acid sequence of a Neutrokine-alpha or Neutrokine-alphaSV polypeptide to have an amino acid sequence which contains not more than 10, 9, 8, 7, 6, 5, 4, 3, 2 or 1 or 1-100, 1-50, 1-25, 1-20, 1-15, 1-10, or 1-5 amino acid additions, substitutions and/or deletions. Conservative substitutions are preferable.
  • the present invention also relates to recombinant vectors, which include the isolated nucleic acid molecules of the present invention, and to host cells containing the recombinant vectors, as well as to methods of making such vectors and host cells and for using them for production of Neutrokine-alpha polypeptides by recombinant techniques.
  • a process for producing such polypeptides by recombinant techniques comprising culturing recombinant prokaryotic and/or eukaryotic host cells, containing a Neutrokine-alpha or Neutrokine-alphaSV nucleic acid sequence of the invention, under conditions promoting expression of said polypeptide and subsequent recovery of said polypeptide.
  • the invention further provides an isolated Neutrokine-alpha polypeptide comprising, or alternatively consisting of, an amino acid sequence selected from the group consisting of: (a) the amino acid sequence of the full-length Neutrokine-alpha polypeptide having the complete amino acid sequence shown in Figures 1A and IB (i.e., positions 1-285 of SEQ ID NO:2) or as encoded by the cDNA plasmid contained in the deposit having ATCC accession number 97768; (b) the amino acid sequence of the full-length Neutrokine-alpha polypeptide having the complete amino acid sequence shown in SEQ ID NO:2 excepting the N-terminal methionine (i.e., positions 2 to 285 of SEQ ID NO:2); (c) a fragment of the polypeptide of (b) having Neutrokine-alpha functional activity (e.g., biological activity); (d) the amino acid sequence of the predicted extracellular domain of the Neutrokine-alpha polypeptide having the
  • polypeptides of the present invention also include polypeptides having an amino acid sequence at least 80% identical, more preferably at least 85% or 90% identical, and still more preferably 95%, 96%, 97%, 98% or 99% identical to those described in (a), (b), (c), (d), (e) (f), (g), (h) or (i) above, as well as polypeptides having an amino acid sequence with at least 80%, 85%, or 90% similarity, and more preferably at least 95% similarity, to those above.
  • polypeptides which comprise, or alternatively consist of, the amino acid sequence of an epitope-bearing portion of a Neutrokine-alpha polypeptide having an amino acid sequence described in (a), (b), (c), (d), (e), (f), (g), (h) or (i) above.
  • Polypeptides having the amino acid sequence of an epitope-bearing portion of a Neutrokine-alpha polypeptide of the invention include portions of such polypeptides with at least 4, at least 5, at least 6, at least 7, at least 8, and preferably at least 9, at least 10, at least 11, at least 12, at least 13, at least 14, at least 15, at least 20, at least 25, at least 30, at least 40, at least 50, and more preferably at least about 30 amino acids to about 50 amino acids, although epitope-bearing polypeptides of any length up to and including the entire amino acid sequence of a polypeptide of the invention described above also are included in the invention.
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 80%, 85%, 90% identical and more preferably at least 95%, 96%, 97%, 98%, 99% or 100% identical to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • Preferred embodiments of the invention are directed to nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 90% identical to a polynucleotide sequence encoding the Neutrokine- alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 95% identical to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • More preferred embodiments of the invention are directed to nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 96% identical to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 97% to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 98% to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 99% identical to a polynucleotide sequence encoding the Neutrokine- alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence. Polypeptides encoded by these polynucleotides and nucleic acid molecules are also encompassed by the invention. [0035]
  • the invention further provides an isolated Neutrokine-alphaSV polypeptide comprising, or alternatively consisting of, an amino acid sequence selected from the group consisting of: (a) the amino acid sequence of the full-length Neutrokine-alphaSV polypeptide having the complete amino acid sequence shown in Figures 5 A and 5B (i.e., positions 1-266 of SEQ ID NO:19) or as encoded by the cDNA clone contained in ATCC No.
  • polypeptides of the present invention also include polypeptides having an amino acid sequence at least 80% identical, more preferably at least 85% or 90% identical, and still more preferably 95%, 96%, 97%, 98% or 99% identical to those described in (a), (b), (c), (d), (e) (f), or (g) above, as well as polypeptides having an amino acid sequence with at least 80%, 85%, or 90% similarity, and more preferably at least 95% similarity, to those above.
  • polypeptides which comprise, or alternatively consist of, the amino acid sequence of an epitope-bearing portion of a Neutrokine-alphaSV polypeptide having an amino acid sequence described in (a), (b), (c), (d), (e), (f), or (g) above.
  • Peptides or polypeptides having the amino acid sequence of an epitope-bearing portion of a Neutrokine-alphaSV polypeptide of the invention include portions of such polypeptides with at least 4, at least 5, at least 6, at least 7, at least 8, and preferably at least 9, at least 10, at least 11, at least 12, at least 13, at least 14, at least 15, at least 20, at least 25, at least 30, at least 40, at least 50, and more preferably at least about 30 amino acids to about 50 amino acids, although epitope-bearing polypeptides of any length up to and including the entire amino acid sequence of a polypeptide of the invention described above also are included in the invention.
  • Certain non-exclusive embodiments of the invention relate to a polypeptide which has the amino acid sequence of an epitope-bearing portion of a Neutrokine-alpha or Neutrokine-alphaSV polypeptide having an amino acid sequence described in (a), (b), (c), (d), (e), (f), (g), (h) or (i) above.
  • the invention provides an isolated antibody that binds specifically (i.e., uniquely) to a Neutrokine-alpha or Neutrokine- alphaSVpolypeptide having an amino acid sequence described in (a), (b), (c), (d), (e), (f), (g), (h) or (i) above.
  • the invention further provides methods for isolating antibodies that bind specifically (i.e., uniquely) to a Neutrokine-alpha or Neutrokine-alphaSV polypeptide having an amino acid sequence as described herein.
  • Such antibodies are useful diagnostically or therapeutically as described below.
  • the invention also provides for pharmaceutical compositions comprising soluble Neutrokine-alpha and or Neutrokine-alphaSV polypeptides, particularly human Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides, and/or anti-Neutrokine-alpha antibodies and or anti-Neutrokine-alphaSV antibodies which may be employed, for instance, to treat, prevent, prognose and/or diagnose tumor and tumor metastasis, infections by bacteria, viruses and other parasites, immunodeficiencies, inflammatory diseases, lymphadenopathy, autoimmune diseases, graft versus host disease, stimulate peripheral tolerance, destroy some transformed cell lines, mediate cell activation, survival and proliferation, mediate immune regulation and inflammatory responses, and to enhance or inhibit immune responses.
  • pharmaceutical compositions comprising soluble Neutrokine-alpha and or Neutrokine-alphaSV polypeptides, particularly human Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide
  • soluble Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the invention, or agonists thereof are administered, to treat, prevent, prognose and/or diagnose an immunodeficiency (e.g., severe combined immunodeficiency (SCID)-X linked, SCID-autosomal, adenosine deaminase deficiency (ADA deficiency), X-linked agammaglobulinemia (XLA), Bruton's disease, congenital agammaglobulinemia, X-linked infantile agammaglobulinemia, acquired agammaglobulinemia, adult onset agammaglobulinemia, late-onset agammaglobulinemia, dysgammaglobulinemia, hypogammaglobulinemia, transient hypogammaglobulinemia of infancy, unspecified hypogammaglobulinemia, agammaglobulinemia
  • an immunodeficiency
  • Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides or polynucleotides of the invention, or agonists thereof is administered to treat, prevent, prognose and/or diagnose common variable immunodeficiency.
  • Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides or polynucleotides of the invention, or agonists thereof is administered to treat, prevent, prognose and/or diagnose X-linked agammaglobulinemia.
  • Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides or polynucleotides of the invention, or agonists thereof is administered to treat, prevent, prognose and/or diagnose severe combined immunodeficiency (SCUD).
  • SCUD severe combined immunodeficiency
  • Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides or polynucleotides of the invention, or agonists thereof is administered to treat, prevent, prognose and/or diagnose Wiskott-Aldrich syndrome.
  • Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides or polynucleotides of the invention, or agonists thereof is administered to treat, prevent, prognose and/or diagnose X-linked Ig deficiency with hyper IgM.
  • Neutrokine-alpha antagonists and/or Neutrokine- alphaSV antagonists are administered to treat, prevent, prognose and/or diagnose an autoimmune disease (e.g., rheumatoid arthritis, systemic lupus erhythematosus, idiopathic thrombocytopenia purpura, autoimmune hemolytic anemia, autoimmune neonatal thrombocytopenia, autoimmunocytopenia, hemolytic anemia, antiphospholipid syndrome, dermatitis, allergic encephalomyelitis, myocarditis, relapsing polychondritis, rheumatic heart disease, glomerulonephritis (e.g, IgA nephropathy), an immune-based rheumatologic disease (e.g., SLE, rheumatoid arthritis, CREST syndrome (a variant of s
  • an autoimmune disease e.g., rheumatoid arthritis, systemic l
  • rheumatoid arthritis is treated, prevented, prognosed and/or diagnosed using anti-Neutrokine-alpha antibodies and/or anti-Neutrokine-alphaSV antibodies and/or other antagonist of the invention.
  • systemic lupus erythemosus is treated, prevented, prognosed, and/or diagnosed using anti-Neutrokine-alpha antibodies and/or anti-Neutrokine-alphaSV and/or other antagonist of the invention.
  • idiopathic thrombocytopenia purpura is treated, prevented, prognosed, and/or diagnosed using anti- Neutrokine-alpha antibodies and/or anti-Neutrokine-alphaSV and/or other antagonist of the invention.
  • IgA nephropathy is treated, prevented, prognosed and/or diagnosed using anti-Neutrokine-alpha antibodies and/or anti-Neutrokine-alphaSV and/or other antagonist of the invention.
  • the autoimmune diseases and disorders and/or conditions associated with the diseases and disorders recited above are treated, prevented, prognosed and/or diagnosed using anti-Neutrokine-alpha antibodies and/or anti-Neutrokine-alphaSV antibodies.
  • the invention further provides compositions comprising a Neutrokine-alpha or Neutrokine-alphaSV polynucleotide, a Neutrokine-alpha or Neutrokine-alphaSV polypeptide, and/or an anti-Neutrokine-alpha antibody or anti-Neutrokine-alphaSV antibody, for administration to cells in vitro, to cells ex vivo, and to cells in vivo, or to a multicellular organism.
  • compositions of the invention comprise a Neutrokine-alpha and/or Neutrokine-alphaSV polynucleotide for expression of a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide in a host organism for treatment of disease.
  • compositions of the invention comprise a Neutrokine-alpha and/or Neutrokine-alphaSV polynucleotide for expression of a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide in a host organism for treatment of an immunodeficiency and/or conditions associated with an immunodeficiency.
  • Neutrokine-alpha e.g., expression to enhance the normal B-cell function by expanding B-cell numbers or increasing B cell lifespan.
  • the present invention further encompasses methods and compositions for preventing, treating and/or ameliorating diseases or disorders associated with aberrant or inappropriate Neutrokine-alpha, Neutrokine-alphaSV, Neutrokine-alpha receptor, and/or Neutrokine-alphaSV receptor expression or function in an animal, preferably a mammal, and most preferably a human, comprising, or alternatively consisting of, administering to an animal in which such treatment, prevention or amelioration is desired one or more Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides (including molecules which comprise, or alternatively consist of, Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide fragments or variants thereof) in an amount effective to treat prevent or ameliorate the disease or disorder.
  • the present invention further encompasses methods and compositions for killing cells of hematopoietic origin, comprising, or alternatively consisting of, contacting Neutrokine-alpha and or Neutrokine-alphaSV polypeptide with cells of hematopoietic origin.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for killing cells of hematopoietic origin, comprising, or alternatively consisting of, administering to an animal in which such killing is desired, a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide (e.g., a radiolabelled Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide) in an amount effective to kill cells of hematopoietic origin.
  • a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide e.g., a radiolabelled Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for stimulating immunoglobulin production, comprising, or alternatively consisting of, contacting an effective amount of Neutrokine-alpha and/or Neutrokine-alphaSV with cells of hematopoietic origin, wherein the effective amount of the Neutrokine-alpha and/or Neutrokine-alphaSV binding polypeptide stimulates Neutrokine-alpha and/or Neutrokine- alphaSV-mediated immunoglobulin production.
  • the present invention further encompasses methods and compositions for stimulating immunoglobulin production comprising, or alternatively consisting of, administering to an animal in which such stimulation is desired, a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide in an amount effective to stimulate immunoglobulin production.
  • the present invention further encompasses methods and compositions for stimulating proliferation of cells of hematopoietic origin, comprising, or alternatively consisting of, contacting an effective amount of Neutrokine-alpha and/or Neutrokine- alphaSV polypeptide with with cells of hematopoietic origin, wherein the effective amount of Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide stimulates Neutrokine-alpha and/or Neutrokine-alphaSV-mediated cell proliferation.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for stimulating proliferation of cells of hematopoietic origin, comprising, or alternatively consisting of, administering to an animal, in which such stimulation is desired, a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide in an amount effective to stimulate Neutrokine-alpha and/or Neutrokine-alphaSV-mediated cell proliferation.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for increasing activation of cells of hematopoietic origin, comprising, or alternatively consisting of, contacting an effective amount of Neutrokine-alpha and/or Neutrokine- alphaSV polypeptide with cells of hematopoietic origin, wherein the effective amount of Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide increases Neutrokine-alpha and/or Neutrokine-alphaSV-mediated activation of cells of hematopoietic origin.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for increasing activation of cells of hematopoietic origin, comprising, or alternatively consisting of, administering to an animal in which such increase is desired, a Neutrokine- alpha and/or Neutrokine-alphaSV polypeptide in an amount effective to increase Neutrokine-alpha and/or Neutrokine-alphaSV-mediated activation of cells of hematopoietic origin.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for increasing lifespan of cells of hematopoietic origin, comprising, or alternatively consisting of, contacting an effective amount of Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide with cells of hematopoietic origin, wherein the effective amount of Neutrokine-alpha and/or Neutrokine-alphaSV binding polypeptide increases Neutrokine- alpha and/or Neutrokine-alphaSV-regulated lifespan of cells of hematopoietic origin.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for increasing lifespan of cells of hematopoietic origin, comprising, or alternatively consisting of, administering to an animal in which such increase is desired, a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide in an amount effective to increase Neutrokine- alpha and/or Neutrokine-alphaSV-regulated lifespan of cells of hematopoietic origin.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for inhibiting or reducing immunoglobulin production, comprising, or alternatively consisting of, contacting an effective amount of Neutrokine-alpha and/or Neutrokine-alphaSV with cells of hematopoietic origin, wherein the effective amount of the Neutrokine-alpha and/or Neutrokine-alphaSV binding polypeptide inhibits or reduces Neutrokine-alpha and/or Neutrokine-alphaSV-mediated immunoglobulin production.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for inhibiting or reducing immunoglobulin production comprising, or alternatively consisting of, administering to an animal in which such inhibition or reduction is desired, a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide in an amount effective to inhibit ir reduce immunoglobulin production.
  • the present invention further encompasses methods and compositions for inhibiting or reducing proliferation of cells of hematopoietic origin, comprising, or alternatively consisting of, contacting an effective amount of Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide with cells of hematopoietic origin, wherem the effective amount of Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide inhibits ir reduces Neutrokine-alpha and/or Neutrokine-alphaSV-mediated cell proliferation.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for inhibiting or reducing proliferation of cells of hematopoietic origin, comprising, or alternatively consisting of, administering to an animal in which such inhibition or reduction is desired, a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide in an amount effective to inhibit or reduce Neutrokine-alpha and/or Neutrokine-alphaSV- mediated cell proliferation.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for decreasing activation of cells of hematopoietic origin, comprising, or alternatively consisting of, contacting an effective amount of Neutrokine-alpha and/or Neutrokine- alphaSV polypeptide with cells of hematopoietic origin, wherein the effective amount of Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide decreases Neutrokine-alpha and/or Neutrokine-alphaSV-mediated activation of cells of hematopoietic origin.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for decreasing activation of cells of hematopoietic origin, comprising, or alternatively consisting of, administering to an animal in which such increase is desired, a Neutrokine- alpha and/or Neutrokine-alphaSV polypeptide in an amount effective to decrease Neutrokine-alpha and/or Neutrokine-alphaSV-mediated activation of cells of hematopoietic origin.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for decreasing lifespan of B cells, comprising, or alternatively consisting of, contacting an effective amount of Neutrokine-alpha and or Neutrokine-alphaSV polypeptide with cells of hematopoietic origin, wherein the effective amount of Neutroldne-alpha and/or Neutrokine-alphaSV binding polypeptide decreases Neutrokine-alpha and/or Neutrokine- alphaSV-regulated lifespan of cells of hematopoietic origin.
  • the cells of hematopoietic origin are B cells.
  • the present invention further encompasses methods and compositions for decreasing lifespan of cells of hematopoietic origin, comprising, or alternatively consisting of, administering to an animal in which such reduction is desired, a Neutrokine- alpha and/or Neutrokine-alphaSV polypeptide in an amount effective to decrease Neutrokine-alpha and/or Neutrokine-alphaSV-regulated lifespan of cells of hematopoietic origin.
  • the cells of hematopoietic origin are B cells.
  • the present invention also provides a screening method for identifying compounds capable of enhancing or inhibiting a cellular response induced by Neutrokine-alpha and/or Neutrokine-alphaSV which involves contacting cells which express Neutrokine-alpha and/or Neutrokine-alphaSV with the candidate compound, assaying a cellular response, and comparing the cellular response to a standard cellular response, the standard being assayed when contact is made in absence of the candidate compound; whereby, an increased cellular response over the standard indicates that the compound is an agonist and a decreased cellular response over the standard indicates that the compound is an antagonist.
  • a method for identifying Neutrokine-alpha and/or Neutrokine-alphaSV receptors is provided, as well as a screening assay for agonists and antagonists using such receptors.
  • This assay involves determining the effect a candidate compound has on Neutrokine-alpha and/or Neutrokine-alphaSV binding to the Neutrokine-alpha and/or Neutrokine-alphaSV receptor.
  • the method involves contacting a Neutrokine-alpha and/or Neutrokine-alphaSV receptor with a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide of the invention and a candidate compound and determining whether Neutrokine-alpha and or Neutrokine-alphaSV polypeptide binding to the Neutrokine-alpha and/or Neutrokine-alphaSV receptor is increased or decreased due to the presence of the candidate compound.
  • the antagonists may be employed to prevent septic shock, inflammation, cerebral malaria, activation of the HIV virus, graft-host rejection, bone resorption, rheumatoid arthritis, cachexia (wasting or malnutrition), immune system function, lymphoma, and autoimmune disorders (e.g., rheumatoid arthritis and systemic lupus erythematosus).
  • Neutroldne-alpha is expressed not only in cells of monocytic lineage, but also in kidney, lung, peripheral leukocyte, bone marrow, T cell lymphoma, B cell lymphoma, activated T cells, stomach cancer, smooth muscle, macrophages, and cord blood tissue.
  • the present inventors have further discovered that Neutrokine-alphaSV appears to be expressed highly only in primary dendritic cells.
  • tumor and tumor metastasis infections of bacteria, viruses and other parasites
  • immunodeficiencies e.g., chronic variable immunodeficiency
  • septic shock inflammation, cerebral malaria
  • activation of the HIV virus graft-host rejection
  • bone resorption e.g., bone resorption
  • rheumatoid arthritis e.g., rheumatoid arthritis and systemic lupus erythematosus
  • cachexia wasting or malnutrition
  • Neutrokine-alpha and/or Neutrokine-alphaSV gene expression can be detected in certain tissues (e.g., bone marrow) or bodily fluids (e.g., serum, plasma, urine, synovial fluid or spinal fluid) taken from an individual having such a disorder, relative to a "standard" Neutrokine-alpha and/or Neutrokine-alphaSV gene expression level, i.e., the Neutrokine-alpha and/or Neutrokine-alphaSV expression level in tissue or bodily fluids from an individual not having the disorder.
  • tissues e.g., bone marrow
  • bodily fluids e.g., serum, plasma, urine, synovial fluid or spinal fluid
  • the invention provides a diagnostic method useful during diagnosis of a disorder, which involves: (a) assaying Neutrokine-alpha and/or Neutrokine-alphaSV gene expression level in cells or body fluid of an individual; (b) comparing the Neutrokine-alpha and/or Neutrokine-alphaSV gene expression level with a standard Neutrokine-alpha and/or Neutrokine-alphaSV gene expression level, whereby an increase or decrease in the assayed Neutrokine-alpha and/or Neutrokine-alphaSV gene expression level compared to the standard expression level is indicative of a disorder.
  • An additional embodiment of the invention is related to a method for treating an individual in need of an increased or constitutive level of Neutrokine-alpha and/or Neutrokine-alphaSV activity in the body comprising administering to such an individual a composition comprising a therapeutically effective amount of an isolated Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide of the invention or an agonist thereof.
  • a still further embodiment of the invention is related to a method for treating an individual in need of a decreased level of Neutrokine-alpha and/or Neutrokine-alphaSV activity in the body comprising, administering to such an individual a composition comprising a therapeutically effective amount of an Neutrokine-alpha and/or Neutrokine-alphaSV antagonist.
  • Preferred antagonists for use in the present invention are Neutrokine-alpha-specific and/or Neutrokine-alphaSV-specific antibodies.
  • Figures 1A and IB show the nucleotide (SEQ ID NO:l) and deduced amino acid (SEQ ID NO:2) sequences of Neutrokine-alpha.
  • Amino acids 1 to 46 represent the predicted intracellular domain, amino acids 47 to 72 the predicted transmembrane domain (the double-underlined sequence), and amino acids 73 to 285, the predicted extracellular domain (the remaining sequence).
  • N-linked glycosylation sites are marked in Figures 1A and IB with a bolded asparagine symbol (N) in the Neutrokine-alpha amino acid sequence and a bolded pound sign (#) above the first nucleotide encoding that asparagine residue in the Neutrokine-alpha nucleotide sequence.
  • Potential N-linked glycosylation sequences are found at the following locations in the Neutrokine-alpha amino acid sequence: N-124 through Q-127 (N-124, S-125, S-126, Q-127) and N-242 through C-245 (N-242, N-243, S-244, C-245).
  • Regions of high identity between Neutrokine-alpha, Neutrokine-alphaSV, TNF-alpha, TNF-beta, LT-beta, and the closely related Fas Ligand are underlined in Figures 1A and IB. These regions are not limiting and are labeled as conserveed Domain (CD)-I, CD-JT, CD-i ⁇ , CD-IV, CD-V, CD- VI, CD-V ⁇ , CD- VIII, CD-IX, CD-X, and CD-XI in Figures 1A and IB.
  • Figures 2A, 2B, 2C, and 2D show the regions of identity between the amino acid sequences of Neutrokine-alpha (SEQ ID NO:2) and Neutrokine-alphaSV (SEQ ID NO: 19), and TNF-alpha ("TNFalpha" in Figures 2A, 2B, 2C, and 2D; GenBank No. Z15026; SEQ ID NO:3), TNF-beta ("TNFbeta" in Figures 2A, 2B, 2C, and 2D; GenBank No. Z15026; SEQ ID NO:4), Lymphotoxin-beta ("LTbeta" in Figures 2A, 2B, 2C, and 2D; GenBank No.
  • Figure 3 shows an analysis of the Neutroldne-alpha amino acid sequence.
  • Alpha, beta, turn and coil regions; hydrophilicity and hydrophobicity; amphipathic regions; flexible regions; antigenic index and surface probability are shown, as predicted for the amino acid sequence of SEQ ID NO:2 using the default parameters of the recited computer programs.
  • the "Antigenic Index - Jameson-Wolf" graph the indicate location of the highly antigenic regions of Neutrokine-alpha i.e., regions from which epitope-bearing peptides of the invention may be obtained.
  • Antigenic polypeptides include from about Phe-115 to about Leu-147, from about Ile-150 to about Tyr-163, from about Ser-171 to about Phe-194, from about Glu-223 to about Tyr-246, and from about Ser-271 to about Phe-278, of the amino acid sequence of SEQ JJD NO:2. [0076]
  • the data presented in Figure 3 are also represented in tabular form in Table I. The columns are labeled with the headings "Res", "Position”, and Roman Numerals I-XIV.
  • Figures 4A, 4B, and 4C show the alignment of the Neutrokine-alpha nucleotide sequence determined from the human cDNA deposited in ATCC No. 97768 with related human cDNA clones of the invention which have been designated HSOAD55 (SEQ ID NO:7), HSLAH84 (SEQ ID NO:8) and HLTBM08 (SEQ ID NO:9).
  • Figures 5A and 5B shows the nucleotide (SEQ ID NO: 18) and deduced amino acid (SEQ ID NO: 19) sequences of the Neutrokine-alphaSV protein.
  • Amino acids 1 to 46 represent the predicted intracellular domain, amino acids 47 to 72 the predicted transmembrane domain (the double-underlined sequence), and amino acids 73 to 266, the predicted extracellular domain (the remaining sequence).
  • Potential asparagine-linked glycosylation sites are marked in Figures 5A and 5B with a bolded asparagine symbol (N) in the Neutrokine-alphaSV amino acid sequence and a bolded pound sign (#) above the first nucleotide encoding that asparagine residue in the Neutrokine-alphaSV nucleotide sequence.
  • N-124 through Q-127 N-124, S-125, S-126, Q-127) and N-223 through C-226 (N-223, N-224, S-225, C-226).
  • Antigenic polypeptides include from about Pro-32 to about Leu-47, from about Glu-116 to about Ser-143, from about Phe-153 to about Tyr-173, from about Pro-218 to about Tyr-227, from about Ala-232 to about Gln-241; from about Ile-244 to about Ala-249; and from about Ser-252 to about Val-257 of the amino acid sequence of SEQ ID NO: 19.
  • Regions of high identity between Neutrokine-alpha, Neutrokine-alphaSV, TNF-alpha, TNF-beta, LT-beta, and the closely related Fas Ligand (an augment of these sequences is presented in Figure 2) are underlined in Figures 1A and IB.
  • These conserved regions (of Neutrokine-alpha and Neutrokine-alphaSV) are labeled as conserveed Domain (CD)-I, CD-II, CD-III, CD-V, CD-VI, CD-VII, CD-Vffl, CD-IX, CD-X, and CD-XI in Figures 5 A and 5B.
  • Neutrokine-alphaSV does not contain the sequence of CD-IV described in the legend of Figures 1A and IB.
  • Figure 6 shows an analysis of the Neutrokine-alphaSV amino acid sequence.
  • Alpha, beta, turn and coil regions; hydrophilicity and hydrophobicity; amphipathic regions; flexible regions; antigenic index and surface probability are shown, as predicted for the amino acid sequence of SEQ ID NO: 19 using the default parameters of the recited computer programs.
  • the location of the highly antigenic regions of the Neutrokine-alpha protein, i.e., regions from which epitope-bearing peptides of the invention may be obtained is indicated in the "Antigenic Index - Jameson-Wolf" graph.
  • Antigenic polypeptides include, but are not limited to, a polypeptide comprising amino acid residues from about Pro-32 to about Leu-47, from about Glu-116 to about Ser-143, from about Phe-153 to about Tyr-173, from about Pro-218 to about Tyr-227, from about Ser-252 to about Thr-258, from about Ala-232 to about Gln-241; from about Ile-244 to about Ala-249; and from about Ser-252 to about Val-257, of the amino acid sequence of SEQ ID NO:19.
  • Figures 7A-1 and 7A-2 The amino-acid sequence of Neutrokine-alpha and alignment of its predicted ligand-binding domain with those of APRIL, TNF-alpha, and LT-alpha (specifically, amino acid residues 115-250 of the human APRIL polypeptide (SEQ ID NO:20; GenBank Accession No. AF046888 (nucleotide) and AAC6132 (protein)), amino acid residues 88-233 of TNF alpha (SEQ ED NO:3; GenBank Accession No. Z 15026), and LT alpha ((also designated TNF-beta) amino acid residues 62-205 of SEQ ED NO:4; GenBank Accession No.
  • SEQ ID NO:20 GenBank Accession No. AF046888 (nucleotide) and AAC6132 (protein)
  • amino acid residues 88-233 of TNF alpha SEQ ED NO:3; GenBank Accession No. Z 15026
  • Figure 7B Expression of Neutrokine-alpha mRNA.
  • Northern hybridization analysis was performed using the Neutrokine-alpha orf as a probe on blots of poly (A)+ RNA (Clonetech) from a spectrum of human tissue types and a selection of cancer cell lines.
  • a 2.6 kb Neutrokine-alpha mRNA was detected at high levels in placenta, heart, lung, fetal liver, thymus, and pancreas.
  • the 2.6 kb Neutrokine-alpha mRNA was also detected in HL-60 and K562 cell lines.
  • FIGS 8A, 8B and 8C Neutrokine-alpha expression increases following activation of human monocytes by EFN-gamma.
  • Figures 8A and 8B Flow cytometric analysis of Neutrokine-alpa protein expression on in vitro cultured monocytes. Purified monocytes were cultured for 3 days in presence or absence of EFN-gamma (100 U/ml). Cells were then stained with a Neutrokine-alpha-specific mAb (2E5) (solid lines) or an isotype-matched control (IgGl) (dashed lines). Comparable results were obtained with monocytes purified from three different donors in three independent experiments.
  • Figure 8C Flow cytometric analysis of Neutrokine-alpha expression increases following activation of human monocytes by EFN-gamma.
  • Figures 8A and 8B Flow cytometric analysis of Neutrokine-alpa protein expression on in vitro cultured monocytes. Purified monocytes were cultured for
  • Neutroldne-alpha-specific TaqMan primers were prepared and used to assess the relative Neutroldne-alpha mRNA expression levels in unstimulated and EFN-gamma (100 U/mL) treated monocytes.
  • Nucleotide sequences of the TaqMan primers are as follows: (a) Probe: 5'-CCA CCA GCT CCA GGA GAA GGC AAC TC-3' (SEQ ID NO:24); (b) 5' amplification primer: 5'-ACC GCG GGA CTG AAA ATC T-3' (SEQ ID NO:25); and (c) 3' amplification primer: 5'-CAC GCT TAT TTC TGC TGT TCT GA-3' (SEQ ID NO:26).
  • FIGs 9A and 9B Neutrokine-alpha is a potent B lymphocyte stimulator.
  • Figure 9A The biological activity of Neutrokine-alpha was assessed in a standard B- lymphocyte co-stimulation assay utilizing Staphylococcus aureus cowan 1 SAC as the priming agent. SAC alone yielded background counts of 1427 +/- 316. Values are reported as mean +/- standard deviation of triplicate wells. Similar results were obtained using recombinant Neutrokine-alpha purified from stable CHO transfectants and transiently transfected HEK 293T cells. Figure 9B.
  • Figures 10A, 10B, 10C, 10D, 10E, 10F and 10G Neutrokine-alpha receptor expression among normal human peripheral blood mononuclear cells and tumor cell lines.
  • Figures 10A, 10B, 10C, 10D and 10E Human peripheral blood nucleated cells were obtained from normal volunteers and isolated by density gradient centrifugation. Cells were stained with biotinylated Neutrokine-alpha followed by PE-conjugated streptavidin and FITC or PerCP coupled mAbs specific for CD3, CD20, CD14, CD56, and CD66b. Cells were analyzed on a Becton Dickinson FACScan using the CellQuest software. Data
  • FIGS 11B and 11C Flow cytometric analyses of normal (left panel) and Neutroldne-alpha-treated (right panel) stained with PE-CD45R(B220) and FITC-ThB (Ly6D). Figures 11D, HE, and HF. Serum IgM, IgG, and IgA levels in normal and Neutrokine-alpha treated mice.
  • the present invention provides isolated nucleic acid molecules comprising a polynucleotide encoding a Neutrokine-alpha polypeptides having the amino acid sequences shown in Figures 1A and IB (SEQ ID NO:2), which was determined by sequencing a cDNA clone.
  • the nucleotide sequence shown in Figures 1A and IB (SEQ ID NO:l) was obtained by sequencing the HNEDU15 clone, which was deposited on October 22, 1996 at the American Type Culture Collection, 10801 University Boulevard, Manassas, Virginia 20110-2209, and assigned ATCC Accession No. 97768.
  • the deposited clone is contained in the pBluescript SK(-) plasmid (Stratagene, La Jolla, CA).
  • the ATCC deposits were made pursuant to the terms of the Budapest Treaty on the international recognition of the deposit of microorganisms for the purposes of patent procedure.
  • the present invention also provides isolated nucleic acid molecules comprising a polynucleotide encoding Neutrokine-alphaSV polypeptides having the amino acid sequences shown in Figures 5A and 5B (SEQ ID NO: 19), which was determined by sequencing a cDNA clone.
  • the nucleotide sequence shown in Figures 5A and 5B (SEQ D NO: 18) was obtained by sequencing the HDPMC52 clone, which was deposited on December 10, 1998 at the American Type Culture Collection, and assigned ATCC Accession No. 203518.
  • the deposited clone is contained in the pBluescript SK(-) plasmid (Stratagene, La Jolla, CA).
  • the ATCC deposits were made pursuant to the terms of the Budapest Treaty on the international recognition of the deposit of microorganisms for the purposes of patent procedure.
  • the Neutrokine-alpha and Neutrokine-alpha polypeptides of the present invention share sequence homology with the translation products of the human mRNAs for TNF-alpha, TNF-beta, LTbeta, Fas ligand, APRIL, and LTalpha. (See, Figures 2A, 2B, 2C, 2D, 7A-1 and 7A-2).
  • TNF-alpha is thought to be an important cytokine that plays a role in cytotoxicity, necrosis, apoptosis, costimulation, proliferation, lymph node formation, immunoglobulin class switch, differentiation, antiviral activity, and regulation of adhesion molecules and other cytokines and growth factors.
  • nucleotide sequences determined by sequencing a DNA molecule herein were determined using an automated DNA sequencer (such as the Model 373 from Applied Biosystems, Inc., Foster City, CA), and all amino acid sequences of polypeptides encoded by DNA molecules determined herein were predicted by translation of a DNA sequence determined as above. Therefore, as is known in the art for any DNA sequence determined by this automated approach, any nucleotide sequence determined herein may contain some errors. Nucleotide sequences determined by automation are typically at least about 90% identical, more typically at least about 95% to at least about 99.9% identical to the actual nucleotide sequence of the sequenced DNA molecule.
  • the actual sequence can be more precisely determined by other approaches including manual DNA sequencing methods well known in the art.
  • a single insertion or deletion in a determined nucleotide sequence compared to the actual sequence will cause a frame shift in translation of the nucleotide sequence such that the predicted amino acid sequence encoded by a determined nucleotide sequence will be completely different from the amino acid sequence actually encoded by the sequenced DNA molecule, beginning at the point of such an insertion or deletion.
  • nucleotide sequence of a nucleic acid molecule or polynucleotide is intended, for a DNA molecule or polynucleotide, a sequence of deoxyribonucleotides, and for an RNA molecule or polynucleotide, the corresponding sequence of ribonucleotides (A, G, C and U), where each thymidine deoxyribonucleotide (T) in the specified deoxyribonucleotide sequence is replaced by the ribonucleotide uridine (U).
  • nucleic acid molecule of the present invention encoding a Neutrokine-alpha polypeptide may be obtained using standard cloning and screening procedures, such as those for cloning cDNAs using mRNA as starting material.
  • nucleic acid molecule described in Figures 1A and IB SEQ D NO:l was discovered in a cDNA library derived from neutrophils.
  • nucleic acid molecule of the present invention encoding a Neutrokine-alphaSV polypeptide may be obtained using standard cloning and screening procedures, such as those for cloning cDNAs using mRNA as starting material.
  • nucleic acid molecule described in Figures 5A and 5B SEQ ED NO: 18 was discovered in a cDNA library derived from primary dendritic cells.
  • the Neutrokine-alpha plasmid HNEDU15 deposited as ATCC Accession No. 97768 contains an open reading frame encoding a protein of about 285 amino acid residues, a predicted intracellular domain of about 46 amino acids (amino acid residues from about 1 to about 46 in Figures 1A and IB (SEQ ' ID NO:2)), a predicted transmembrane domain of about 26 amino acids (underlined amino acid residues from about 47 to about 72 in Figures 1A and IB (SEQ ID NO:2)), a predicted extracellular domain of about 213 amino acids (amino acid residues from about 73 to about 285 in Figures 1A and IB (SEQ ED NO:2)); and a deduced molecular weight of about 31 kDa.
  • the Neutrokine-alpha polypeptide shown in Figures 1A and IB is about 20% similar and about 10 % identical to human TNF-alpha, which can be accessed on GenBank as Accession No. 339764.
  • the Neutrokine-alphaSV plasmid FJDPMC52 contains a predicted open reading frame encoding a protein of about 266 amino acid residues, a predicted intracellular domain of about 46 amino acids (amino acid residues from about 1 to about 46 in Figures 5A and 5B (SEQ ED NO: 19)), a predicted transmembrane domain of about 26 amino acids (underlined amino acid residues from about 47 to about 72 in Figures 5 A and 5B (SEQ ID NO: 19)), a predicted extracellular domain of about 194 amino acids (amino acid residues from about 73 to about 266 in Figures 5A and 5B (SEQ ED NO: 19)); and a deduced molecular weight of about 29 kDa.
  • the Neutrokine-alphaSV polypeptide shown in Figures 5A and 5B (SEQ ED NO: 19) is about 33.9% similar and about 22.0% identical to human TNF-alpha which can be accessed on GenBank as Accession No. 339764.
  • the actual complete Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides encoded by the deposited cDNAs which comprise about 285 and 266 amino acids, respectively, may be somewhat shorter.
  • Neutrokine-alphaSV coding sequences contain a common second methionine codon which may serve as an alternative start codon for translation of the open reading frame, at nucleotide positions 210-212 in Figures 1A and IB (SEQ ID NO:l) and at nucleotide positions 64-66 in Figures 5A and 5B (SEQ ID NO: 18). More generally, the actual open reading frame may be anywhere in the range of ⁇ 20 amino acids, more likely in the range of ⁇ 10 amino acids, of that predicted from either the first or second methionine codon from the N-terminus shown in Figures 1A and IB (SEQ ID NO:l) and in Figures 5 A and 5B (SEQ ED NO: 18).
  • the polypeptide domains described herein have been predicted by computer analysis, and accordingly, that depending on the analytical criteria used for identifying various functional domains, the exact "address" of the extracellular, intracellular and transmembrane domains of the Neutrokine-alpha and Neutrokine-alphaSV polypeptides may differ slightly.
  • the exact location of the Neutrokine-alpha and Neutrokine-alphaSV extracellular domains in Figures 1A and IB (SEQ ID NO:2) and Figures 5A and 5B (SEQ ID NO: 19) may vary slightly (e.g., the address may "shift" by about 1 to about 20 residues, more likely about 1 to about 5 residues) depending on the criteria used to define the domain.
  • the ends of the transmembrane domains and the beginning of the extracellular domains were predicted on the basis of the identification of the hydrophobic amino acid sequence in the above indicated positions, as shown in Figures 3 and 6 and in Table I.
  • nucleic acid molecules and polynucleotides of the present invention may be in the form of RNA, such as mRNA, or in the form of DNA, including, for instance, cDNA and genomic DNA obtained by cloning or produced synthetically.
  • the DNA may be double-stranded or single-stranded.
  • Single-stranded DNA or RNA may be the coding strand, also known as the sense strand, or it may be the non-coding strand, also referred to as the anti-sense strand.
  • isolated nucleic acid molecule(s) is intended a nucleic acid molecule (DNA or RNA), which has been removed from its native environment.
  • DNA or RNA nucleic acid molecule
  • recombinant DNA molecules contained in a vector are considered isolated for the purposes of the present invention.
  • Further examples of isolated DNA molecules include recombinant DNA molecules maintained in heterologous host cells or purified (partially or substantially) DNA molecules in solution.
  • Isolated RNA molecules include in vivo or in vitro RNA transcripts of the DNA molecules of the present invention.
  • nucleic acid contained in a clone that is a member of a library e.g., a genomic or cDNA library
  • a chromosome isolated or removed from a cell or a cell lysate e.g., a "chromosome spread", as in a karyotype
  • isolated nucleic acid molecules according to the present invention may be produced naturally, recombinantly, or synthetically.
  • Isolated nucleic acid molecules of the present invention include DNA molecules comprising, or alternatively consisting of, an open reading frame (ORF) with an initiation codon at positions 147-149 of the nucleotide sequence shown in Figures 1A and IB (SEQ ID NO:l).
  • isolated nucleic acid molecules of the invention include DNA molecules which comprise, or alternatively consist of, a sequence substantially different from those described above, but which due to the degeneracy of the genetic code, still encodes the Neutrokine-alpha protein.
  • the genetic code is well known in the art. Thus, it would be routine for one skilled in the art to generate the degenerate variants described above.
  • the invention provides isolated nucleic acid molecules comprising, or alternatively consisting of, a sequence encoding the Neutrokine-alpha polypeptide having an amino acid sequence encoded by the cDNA contained in the plasmid having ATCC accession number 97768.
  • this nucleic acid molecule comprises, or alternatively consists of a sequence encoding the extracellular domain the mature or soluble polypeptide sequence of the polypeptide encoded by the cDNA contained in the plasmid having ATCC accession number 97768.
  • Isolated nucleic acid molecules of the present invention also include DNA molecules comprising an open reading frame (ORF) with an initiation codon at positions 1-3 of the nucleotide sequence shown in Figures 5A and 5B (SEQ ID NO: 18).
  • isolated nucleic acid molecules of the invention include DNA molecules which comprise, or alternatively consist of, a sequence substantially different from those described above, but which due to the degeneracy of the genetic code, still encodes the Neutrokine-alphaSV polypeptide.
  • the genetic code is well known in the art. Thus, it would be routine for one skilled in the art to generate the degenerate variants described above.
  • the invention provides isolated nucleic acid molecules comprising, or alternatively consisting of, a sequence encoding the Neutrokine-alphaSV polypeptide having an amino acid encoded by the cDNA contained in the plasmid having ATCC accession number 203518.
  • this nucleic acid molecule comprises, or alternatively consists of, a sequence encoding the extracellular domain or the mature soluble polypeptide sequence of the polypeptide encoded by the cDNA contained in the plasmid having ATCC accession number 203518.
  • the invention further provides an isolated nucleic acid molecule comprising, or alternatively consisting of, the nucleotide sequence shown in Figures 1A and IB (SEQ ID NO:l) or the nucleotide sequence of the Neutrokine-alpha cDNA contained in the plasmid having ATCC accession number 97768, or a nucleic acid molecule having a sequence complementary to one of the above sequences.
  • the invention provides an isolated nucleic acid molecule comprising, or alternatively, consisting of, the nucleotide sequence shown in Figures 5 A and 5B (SEQ ID NO: 18) or the nucleotide sequence of the Neutrokine-alpha SV cDNA contained in the plasmid having ATCC accession number 203518, or a nucleic acid molecule having a sequence complementary to one of the above sequences.
  • isolated molecules particularly DNA molecules, have uses which include, but are not limited to, as probes for gene mapping by in situ hybridization with chromosomes, and for detecting expression of the Neutrokine-alpha and Neutrokine-alphaSV in human tissue, for instance, by Northern or Western blot analysis.
  • the polynucleotides of the invention comprise, or alternatively consist of, the sequence shown in SEQ ID NO:22.
  • the sequence provided as SEQ DD NO:22 was constructed from several overlapping mouse EST sequences obtained from GenBank (AI182472, AA422749, AA254047, and AI122485). The EST sequences were aligned to generate the Neutrokine-alpha-like polynucleotide sequence provided as SEQ ID NO:22.
  • the amino acid sequence resulting from the translation of SEQ ID NO:22 is provided as SEQ ED NO:23. Fragments, variants, and derivatives of the sequences provided as SEQ ED NO:22 and SEQ ID NO:23 are also encompassed by the invention.
  • the polynucleotides of the invention comprise, or alternatively consist of, the sequence shown in SEQ ED NO:27, and/or a sequence encoding the amino acid sequence disclosed in SEQ ID NO:28, fragments, variants, and derivatives thereof. These polynucleotides are also encompassed by the invention. For example, certain embodiments of the invention are directed to polynucleotides comprising, or alternatively consisting of, a sequence encoding a polypeptide sequence that is at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98%-, or 99% identical to amino acids 68-219 of SEQ ED NO:28.
  • polypeptides comprising, or alternatively consisting of, the amino acid sequence of SEQ ED NO:28, and fragments, variants, and derivatives of the sequence provided as SEQ ED NO:28 are also encompassed by the invention.
  • certain embodiments of the invention are directed to polypeptides comprising, or alternatively consisting of, a polypeptide sequence that is at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98%, or 99% identical to amino acids 68-219 of SEQ ED NO:28.
  • a nucleic acid molecule having the sequence provided as SEQ ID NO:27 was obtained by RT-PCR from cyanomologous monkey (i.e., Macaca irus) PBMC using two degenerate primers. Briefly, total RNA was prepared from cyanomologous monkey PBMC by using Trizol (available from Life Technologies, Inc., Rockville, MD) according to the manufacturer's protocol. Then a single stranded cDNA was synthesized from the cyanomologous monkey PBMC preparation using standard methods with an oligo-dT primer.
  • Trizol available from Life Technologies, Inc., Rockville, MD
  • Neutrokine-alpha-specific primers were designed based on the conserved region between the mouse and human Neutrokine-alpha molecules (SEQ DD NOs:22 and 1, respectively).
  • a cyanomologous monkey Neutrokine-alpha nucleic acid molecule was then generated by PCR using the cDNA template in combination with the following two degenerate oligonucleotide primers.
  • "I" represents deoxyinosine or dideoxyinosine.
  • the polynucleotides of the invention comprise, or alternatively consist of, the sequence shown in SEQ DD NO:29, and/or a sequence encoding the amino acid sequence disclosed in SEQ DD NO:30, fragments, variants, and derivatives thereof. These polynucleotides are also encompassed by the invention. For example, certain embodiments of the invention are directed to polynucleotides comprising, or alternatively consisting of, a sequence encoding a polypeptide sequence that is at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98%, or 99% identical to amino acids 68-219 of SEQ DD NO:30.
  • polypeptides comprising, or alternatively consisting of, the amino acid sequence of SEQ ED NO:30, and fragments, variants, and derivatives of the sequences provided as SEQ ED NO:29 and SEQ ED NO:30 are also encompassed by the invention.
  • certain embodiments of the invention are directed to polypeptides comprising, or alternatively consisting of, a polypeptide sequence that is at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98%, or 99% identical to amino acids 68-219 of SEQ DD NO:30.
  • a nucleic acid molecule having the sequence provided as SEQ DD NO:29 was obtained by RT-PCR from rhesus monkey PBMC using two degenerate primers. Briefly, total RNA was prepared from rhesus monkey PBMC by using Trizol (available from Life Technologies, Inc., Rockville, MD) according to the manufacturer's protocol. Then a single stranded cDNA was synthesized from the rhesus monkey PBMC preparation using standard methods with an oligo-dT primer. Neutrokine-alpha-specific primers were designed based on the conserved region between the mouse and human Neutrokine-alpha molecules (SEQ DD NOs:22 and 1, respectively).
  • a rhesus monkey Neutrokine-alpha nucleic acid molecule was then generated by PCR using the cDNA template in combination with the following two degenerate oligonucleotide primers.
  • "I" represents deoxyinosine or dideoxyinosine.
  • the invention also provides nucleic acid molecules having nucleotide sequences related to extensive portions of SEQ DD NO:l and SEQ ED NO: 18 which have been determined from the following related cDNA clones: HSOAD55 (SEQ ID NO:7), HSLAH84 (SEQ ID NO: 8), and HLTBM08 (SEQ DD NO:9).
  • the present invention is further directed to nucleic acid molecules encoding portions of the nucleotide sequences described herein, as well as to fragments of the isolated nucleic acid molecules described herein.
  • the invention provides a polynucleotide having a nucleotide sequence representing the portion of SEQ DD NO:l which consists of the nucleotides at positions 1-1001 of SEQ DD NO:l.
  • the invention provides a polynucleotide having a nucleotide sequence representing the portion of SEQ ED NO: 18 which consists of positions 1-798 of SEQ ED NO: 18.
  • the present invention is further directed to fragments of the nucleic acid molecules (i.e. polynucleotides) described herein.
  • a fragment of a nucleic acid molecule having, for example, the nucleotide sequence of the cDNA contained in the plasmid having ATCC accession number 97768, a nucleotide sequence encoding the polypeptide sequence encoded by the cDNA contained in the plasmid having ATCC accession number 97768, the nucleotide sequence of SEQ ID NO:l, a nucleotide sequence encoding the polypeptide sequence of SEQ D NO:2, the nucleotide sequence of the cDNA contained in the plasmid having ATCC accession number 203518, a nucleotide sequence encoding the polypeptide sequence encoded by the cDNA contained in the plasmid having ATCC accession number 203518, the nucleotide sequence of SEQ ID NO: 18, a nucleotide sequence encoding the
  • fragments have numerous uses which include, but are not limited to, diagnostic probes and primers as discussed herein.
  • larger fragments such as those of 501-1500 nt in length are also useful according to the present invention as are fragments corresponding to most, if not all, of the nucleotide sequences of the cDNA contained in the plasmid having ATCC accession number 97768, the nucleotide sequence of SEQ ED NO:l, the nucleotide sequences of the cDNA contained in the plasmid having ATCC accession number 203518, and the nucleotide sequence of SEQ ED NO:18.
  • nucleic acid fragments of the present invention include nucleic acid molecules encoding polypeptides comprising, or alternatively, consisting of, epitope-bearing portions of the Neutroldne-alpha and/or Neutrokine-alphaSV polypeptide as identified in Figures 1A and IB (SEQ DD NO:2) and in Figures 5A and 5B (SEQ ID NO: 19), respectively, and described in more detail below. Polypeptides encoded by these polynucleotide fragments are also encompassed by the invention.
  • nucleic acid molecule having, for example, the nucleotide sequence of SEQ ED NO:21, the nucleotide sequence of SEQ ED NO:22, the nucleotide sequence of SEQ DD NO:27, the nucleotide sequence of SEQ DD NO:29, the nucleotide sequence of SEQ ED NO:37, a nucleotide sequence encoding the polypeptide sequence of SEQ ED NO:23, a nucleotide sequence encoding the polypeptide sequence of SEQ ED NO:28, a nucleotide sequence encoding the polypeptide sequence of SEQ DD NO:30, a nucleotide sequence encoding the polypeptide sequence of SEQ ED NO:38, a nucleotide sequence encoding the polypeptide sequence of SEQ DD NO:39, a nucleotide sequence encoding the polypeptide sequence of SEQ ED NO:40, a
  • fragments have numerous uses which include, but are not limited to, diagnostic probes and primers as discussed herein.
  • larger fragments such as those of 501-1500 nt in length are also useful according to the present invention as are fragments corresponding to most, if not all, of the nucleotide sequence of SEQ DD NO:21, the nucleotide sequence of SEQ ID NO:22, the nucleotide sequence of SEQ DD NO:27, the nucleotide sequence of SEQ ED NO:29, the nucleotide sequence of SEQ ED NO:37, a nucleotide sequence encoding the polypeptide sequence of SEQ DD NO:23, a nucleotide sequence encoding the polypeptide sequence of SEQ ED NO:28, a nucleotide sequence encoding the polypeptide sequence of SEQ ED NO:30 a nucleotide sequence encoding the polypeptide sequence of SEQ ED NO:38, a nucleotide sequence
  • Neutrokine-alpha polynucleotide fragments of the invention include, for example, fragments that comprise, or alternatively, consist of, a sequence from about nucleotide 1 to 50, 51 to 100, 101 to 146, 147 to 200, 201 to 250, 251 to 300, 301 to 350, 351 to 400, 401 to 450, 451 to 500, 501 to 550, 551 to 600, 600 to 650, 651 to 700, 701 to 750, 751 to 800, 800 to 850, 851 to 900, 901 to 950, 951 to 1000, 1001 to 1050, and/or 1051 to 1082, of SEQ DD NO:l, or the complementary strand thereto, or the cDNA contained in the plasmid having ATCC accession number 97768.
  • Neutrokine-alphaSV polynucleotide fragments of the invention include, for example, fragments that comprise, or alternatively, consist of, a sequence from about nucleotide 1 to 50, 51 to 100, 101 to 150, 151 to 200, 201 to 250, 251 to 300, 301 to 350, 351 to 400, 401 to 450, 451 to 500, 501 to 550, 551 to 600, 600 to 650, 651 to 700, 701 to 750, 751 to 800, 800 to 850, and/or 851 to 900 of SEQ DD NO:18, or the complementary strand thereto, or the cDNA contained in the plasmid having ATCC accession number 203518.
  • about includes the particularly recited ranges, and ranges that are
  • polynucleotide of the invention comprise, or alternatively, consist of, nucleotide residues 571-627, 580-627, 590-627, 600-627, 610-627, 571-620, 580-620, 590-620, 600-620, 571-610, 580-610, 590-610, 571-600, 580-600, and/or 571-590 of SEQ ED NO:l.
  • polynucleotides of the invention comprise, or alternatively, consist of nucleotide residues 1-879, 25-879, 50-879, 75-879, 100-879, 125-879, 150-879, 175-879, 200-879, 225-879, 250-879, 275-879, 300-879, 325-879, 350-879, 375-879, 400-879, 425-879, 450-879, 475-879, 500-879, 525-879, 550-879, 575-879, 600-879, 625-879, 650-879, 675-879, 700-879, 725-879, 750-879, 775-879, 800-879, 825-879, 850-879, 1-850, 25-850, 50-850, 75-850/100-850, 125-850, 150-850, 175-850, 200-850, 225-850, 250-850, 275-850, 300-850, 325-850, 350-850, 375-850, 400-
  • polynucleotides of the invention comprise, or alternatively, consist of nucleotide residues 400-627, 425-627, 450-627, 475-627, 500-627, 525-627, 550-627, 575-627, 600-627, 400-600, 425-600, 450-600, 475-600, 500-600, 525-600, 550-600, 575-600, 400-575, 425-575, 450-575, 475-575, 500-575, 525-575, 550-575, 400-550, 425-550, 450-550, 475-550, 500-550, 525-550, 400-500, 425-500, 450-500, 475-500, 400-475, 425-475, 450-475, 400-450, 425-450, 571-800, 600-800, 625-800, 650-800, 675-800, 700-800, 725-800, 750-800
  • polynucleotides of the invention comprise, or alternatively, consist of nucleotide residues 147-500, 147-450, 147-400, 147- 350, 200-500, 200-450, 200-400, 200-350, 250-500, 250-450, 250-400, 250-350, 300-500 300-450, 300-400, 300-350, 350-750, 350-700, 350-650, 350-600, 350-550, 400-750 400-700, 400-650, 400-600, 400-550, 425-750, 425-700, 425-650, 425-600, 425-550 450-1020, 450-1001, 450-950, 450-900, 450-850, 450-800, 450-775, 500-1001, 500-950 500-900, 500-850, 500-800, 500-775, 550-1001, 550-950, 550-900, 550-850, 550-800 550-775, 600-1001, 600
  • the polynucleotide fragments of the invention encode a polypeptide which demonstrates a Neutrokine-alpha and/or Neutrokine-alphaSV functional activity.
  • a polypeptide demonstrating "functional activity” is meant, a polypeptide capable of displaying one or more known functional activities associated with a full-length and/or secreted Neutrokine-alpha polypeptide and/or Neutrokine-alphaSV polypeptide.
  • Such functional activities include, but are not limited to, biological activity (e.g., ability to stimulate B cell proliferation, survival, differentiation, and/or activation), antigenicity (ability to bind or compete with a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide for binding to an anti-Neutrokine-alpha and/or anti-Neutrokine-alphaSV antibody], immunogenicity (ability to generate antibody which binds to a Neutrokine- alpha and/or Neutrokine-alphaSV polypeptide), ability to form multimers (as described below in the "Neutroldne-alpha Polypeptides" section) with Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the invention, ability to form heteromultimers (as described below in the "Neutroldne-alpha Polypeptides" section) with APRE polypeptides (e.g., SEQ DD NO:20 or SEQ ID
  • AF046888 nucleotide and AAC6132 (protein); J. Exp. Med. 188(6):1185-1190
  • a receptor or ligand e.g., transmembrane activator and CAML interactor (TACI, GenBank accesion number AAC51790), and B-cell maturation antigen (BCMA, GenBank accession number NP_001183)
  • TACI transmembrane activator and CAML interactor
  • BCMA GenBank accession number NP_001183
  • TACI transmembrane activator and CAML interactor
  • BCMA GenBank accession number NP_001183
  • a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide and ability to stimulate a Neutrokine-alpha and or Neutrokine-alphaSV receptor signalling cascade
  • ACL calcium-modulator and cyclophilin ligand
  • NF-AT nuclear factor of activated T cells transcription factor
  • the polynucleotide fragments of the invention encode a polypeptide comprising, or alternatively, consisting of the predicted intracellular domain (amino acids 1 to 46 of SEQ DD NO: 2), the predicted transmembrane domain (amino acids 47 to 72 of SEQ DD NO:2), the predicted extracellular domain (amino acids 73 to 285 of SEQ DD NO:2), or the predicted TNF conserved domain (amino acids 191 to 284 of SEQ ED NO:2) of Neutrokine-alpha.
  • polynucleotide fragments of the invention encode a polypeptide comprising, or alternatively, consisting of any combination of 1, 2, 3, or all 4 of the above recited domains.
  • Polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • the polynucleotide fragments of the invention encode a polypeptide comprising, or alternatively, consisting of the predicted intracellular domain (amino acids 1 to 46 of SEQ ED NO: 19), the predicted transmembrane domain (amino acids 47 to 72 of SEQ DD NO: 19), the predicted extracellular domain (amino acids 73 to 266 of SEQ ED NO: 19), or the predicted TNF conserved domain (amino acids 172 to 265 of SEQ DD NO: 19) of Neutrokine-alphaSV.
  • polynucleotide fragments of the invention encode a polypeptide comprising, or alternatively, consisting of any combination of 1, 2, 3, or all 4 of the above recited domains.
  • Polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • polynucleotide fragments of the invention comprise, or alternatively consist of, polynucleotides which encode an amino acid sequence selected from residues Met-1 to Lys-113, Leu-114 to Thr-141, Ile-142 to Lys-160, Gly-161 to Gln- 198, Val-199 to Ala-248, and Gly-250 to Leu-285 of SEQ DD NO:2.
  • polynucleotides that encode any combination of two, three, four, five or more of these amino acid sequences are also encompassed by the invention.
  • Polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • polynucleotide fragments of the invention comprise, or alternatively consist of, polynucleotides which encode an amino acid sequence selected from residues Met-1 to Lys 113, Leu-114 to Thr-141, Gly-142 to Gln-179, Val-180 to Ala-229, and Gly-230 to Leu-266 of SEQ DD NO: 19.
  • polynucleotides that encode any combination of two, three, four, five or more of these amino acid sequences are also encompassed by the invention.
  • Polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • polynucleotide fragments of the invention comprise, or alternatively consist of, polynucleotides which encode an amino acid sequence selected from residues Met-1 to Lys-106, Leu-107 to Thr-134, Glu-135 to Asn-165, Ile-167 to Lys- 184, Gly-185 to Gln-224, Val-225 to Ala-272, and Gly-273 to Leu-309 of SEQ DD NO:39.
  • polynucleotides that encode any combination of two, three, four, five or more of these amino acid sequences are also encompassed by the invention. Polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • polynucleotide fragments of the invention comprise, or alternatively consist of, polynucleotides which encode an amino acid sequence selected from residues Tyr-1 to Lys-47, Leu-48 to Thr-75, Ile-76 to Lys-94, Gly-95 to Gln-132, Val-133 to Ala-182, and Gly-183 to Ala-219 of SEQ DD NO:28.
  • polynucleotides that encode any combination of two, three, four, five or more of these amino acid sequences are also encompassed by the invention.
  • Polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • polynucleotide fragments of the invention comprise, or alternatively consist of, polynucleotides which encode an amino acid sequence selected from residues Tyr-1 to Lys-47, Leu-48 to Thr-75, Ile-76 to Lys-94, Gly-95 to Gln-132, Val-133 to Ala-182, and Gly-183 to Ala-219 of SEQ DD NO:30.
  • polynucleotides that encode any combination of two, three, four, five or more of these amino acid sequences are also encompassed by the invention. Polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • the polynucleotides of the invention comprise, or alternatively consist of, the sequence shown in SEQ DD NO:21.
  • the sequence shown as SEQ DD NO:21 encodes a polypeptide consisting of an initiating methionine residue linked to residues Ala- 134 through Leu-285 of the Neutrokine-alpha polypeptide sequence shown as SEQ DD NO:2.
  • Polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • polynucleotides of the invention comprise, or alternatively, consist of nucleotide residues 1-459, 15-459, 30-459, 45-459, 60-459, 75-459, 90-459, 105-459, 120-459, 135-459, 150-459, 165-459, 180-459, 195-459, 210-459, 225-459, 240-459, 255-459, 270-459, 285-459, 300-459, 315-459, 330-459, 345-459, 360-459, 375-459, 390-459, 405-459, 420-459, 435-459, 450-459, 1-450, 15-450, 30-450, 45-450, 60-450, 75-450, 90-450, 105-450, 120-450, 135-450, 150-450, 165-450, 180-450, 195-450, 210-450, 225-450, 240-450, 255-
  • polypeptides which comprise, or alternatively consist of, the amino acid sequence of beta pleated sheet region A, A', B, B', C, D, E, F, G, or H disclosed in Figures 7A-1 and 7A-2 and described in Example 6.
  • Additional embodiments of the invention are directed to polynucleotides encoding Neutrokine-alpha polypeptides which comprise, or alternatively consist of, any combination of 1, 2, 3, 4, 5, 6, 7, 8, 9 or all 10 of beta pleated sheet regions A-H disclosed in Figures 7A-1 and 7A-2 and described in Example 6.
  • Additional preferred embodiments of the invention are directed to polypeptides which comprise, or alternatively consist of, the Neutrokine-alpha amino acid sequence of beta pleated sheet region A, A', B, B', C, D, E, F, G, or H disclosed in Figures 7A-1 and 7A-2 and described in Example 6. Additional embodiments of the invention are directed Neutrokine-alpha polypeptides which comprise, or alternatively consist of, any combination of 1, 2, 3, 4, 5, 6, 7, 8, 9 or all 10 of beta pleated sheet regions A through H disclosed in Figures 7A-1 and 7A-2 and described in Example 6.
  • polynucleotides of the invention comprise, or alternatively consist of, nucleotide residues 34-57, 118-123, 133-141, 151-159, 175-216, 232-255, 280-315, 328-357, 370-393, and/or 430-456 of SEQ DD NO:21.
  • Polypeptides encoded by these polynucleotides are also encompassed by the invention. These polynucleotide and polypeptide fragments correspond to the predicted beta-pleated sheet regions shown in Figures 7A-1 and 7A-2.
  • polynucleotides of the invention comprise, or alternatively consist of, a polynucleotide sequence at least 90%), 95%, 96%, 97%, 98%) or 99% identical to the polynucleotide sequence encoding one, two, three, four, five, six, seven, eight, nine or ten of the beta- pleated sheet regions described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence. Polypeptides encoded by these polynucleotide sequences are also encompassed by the invention.
  • the invention provides an isolated nucleic acid molecule comprising a polynucleotide which hybridizes under stringent hybridization conditions to one, two, three, four, five, six, seven, eight, nine or ten of the beta-pleated sheet polynucleotides of the invention described above.
  • stringent conditions as used herein is described infra.
  • polynucleotides of the invention comprise, or alternatively consist of, nucleotide residues 576-599, 660-665, 675-683, 693-701, 717-758, 774-803, 822-857, 870-899, 912-935, and/or 972-998 of SEQ ED NO:l.
  • Polypeptides encoded by these polynucleotide fragments are also encompassed by the invention. These polynucleotide and polypeptide fragments correspond to the predicted beta-pleated sheet regions shown in Figures 7A-1 and 7A-2.
  • polynucleotides of the invention comprise, or alternatively consist of, nucleotide residues 457-462, 472-480, 490-498, 514-555, 571-600, 619-654, 667-696, 699-732, and/or 769-795 of SEQ DD NO: 18.
  • Polypeptides encoded by these polynucleotide fragments are also encompassed by the invention. These polynucleotide and polypeptide fragments correspond to the predicted beta-pleated sheet regions shown in Figures 7A-1 and 7A-2.
  • polynucleotides of the invention comprise, or alternatively consist of, nucleotide residues 124-129, 139-147, 157-165, 181-222, 238-267, 286-321, 334-363, 376-399, and/or 436-462 of SEQ DD NO:22.
  • Polypeptides encoded by these polynucleotide fragments are also encompassed by the invention. These polynucleotide and polypeptide fragments correspond to the predicted beta-pleated sheet regions shown in Figures 7A-1 and 7A-2.
  • Polypeptides comprising, or alternatively, consisting of the amino acid sequence of any combination of one, two, three, four, five, six, seven, eight, nine, ten, or all of these regions are encompassed by the invention.
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, the amino acid sequence of residues Tyr-187 to Gln-222 of SEQ ED NO:39.
  • the present invention is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%, 90%, 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the mouse Neutrokine-alpha polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention.
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, the amino acid sequence of residues Val-223 to Gly-273 of SEQ DD NO:39.
  • the present invention is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%), 90%), 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the mouse Neutrokine-alpha polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • Polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention.
  • the relative positions of the corresponding intron/exon boundaries were determined for human Neutrokine-alpha (SEQ DD NO:l and SEQ DD NO:2) based on an alignment of the sequences of mouse and human Neutrokine-alpha polypeptides.
  • the apparent second exon from the 5' end of human Neutrokine-alpha (also preliminarily designated “Exon 2") consists of, Tyr-163 to Gln-198 of the sequence shown in SEQ DD NO:2.
  • the apparent third exon from the 5' end of human Neutrokine-alpha (also preliminarily designated “Exon 3") consists of, Val-199 to Gly-249 of the sequence shown in SEQ DD NO:2.
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, the amino acid sequence of residues Tyr-163 to Gln-198 of SEQ DD NO:2.
  • the present invention is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%; 90%, 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the Neutrokine-alpha polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention.
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, the amino acid sequence of residues Val-199 to Gly-249 of SEQ DD NO:2.
  • the present invention is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%, 90%, 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the Neutrokine-alpha polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • Polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention.
  • the functional activity of Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides, and fragments, variants derivatives, and analogs thereof, can be assayed by various methods as described herein and as are well known in the art.
  • various immunoassays known in the art can be used, including but not limited to, competitive and non-competitive assay systems using techniques such as radioimmunoassays, ELISA (enzyme linked immunosorbent assay), "sandwich” immunoassays, immunoradiometric assays, gel diffusion precipitation reactions, immunodiffusion assays, in situ immunoassays (using colloidal gold, enzyme or radioisotope labels, for example), western blots, precipitation reactions, agglutination assays (e.g.
  • antibody binding is detected by detecting a label on the primary antibody.
  • the primary antibody is detected by detecting binding of a secondary antibody or reagent to the primary antibody.
  • the secondary antibody is labeled. Many means are known in the art for detecting binding in an immunoassay and are within the scope of the present invention.
  • binding can be assayed, e.g., by means well- known in the art, such as, for example, reducing and non-reducing gel chromatography, protein affinity chromatography, and affinity blotting. See generally, Phizicky, E., et al., 1995, Microbiol. Rev. 59:94-123.
  • physiological correlates of Neutrokine-alpha and/or Neutrokine-alphaSV binding to its substrates can be assayed.
  • assays described herein may routinely be applied to measure the ability of Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides and fragments, variants derivatives and analogs thereof to elicit Neutrokine-alpha and/or Neutrokine-alphaSV related biological activity (e.g., to stimulate, or alternatively to inhibit (in the case of Neutrokine-alpha and/or Neutrokine-alphaSV antagonists) signalling mediated by Neutrokine-alpha and/or Neutrokine-alphaSV; to stimulate, or alternatively to inhibit B cell proliferation, differentiation and/or activation; and/or to increase or decrease B cell survival in vitro or in vivo).
  • Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides and fragments, variants derivatives and analogs thereof may elicit Neutrokine-alpha and/or Neutrokine-alphaSV related biological activity (e.g
  • the polynucleotides of the invention encode polypeptides comprising, or alternatively consisting of, functional attributes of Neutrokine-alpha and Neutrokine-alphaSV.
  • Preferred embodiments of the invention in this regard include fragments that comprise, or alternatively consist of, alpha-helix and alpha-helix forming regions ("alpha-regions"), beta-sheet and beta-sheet forming regions ("beta-regions"), turn and turn-forming regions ("turn-regions”), coil and coil-forming regions ("coil-regions”), hydrophilic regions, hydrophobic regions, alpha amphipathic regions, beta amphipathic regions, flexible regions, surface-forming regions and high antigenic index regions of Neutrokine-alpha and Neutrokine-alphaSV polypeptides.
  • such preferred regions include Garnier-Robson alpha-regions, beta-regions, turn-regions, and coil-regions, Chou-Fasman alpha-regions, beta-regions, and coil-regions, Kyte-Doolittle hydrophilic regions and hydrophobic regions, Eisenberg alpha- and beta-amphipathic regions, Karplus-Schulz flexible regions, Emini surface-forming regions and Jameson-Wolf regions of high antigenic index.
  • polypeptides comprising, or alternatively consisting of, regions of Neutrokine-alpha and/or Neutrokine-alphaSV that combine several structural features, such as several (e.g., 1, 2, 3 or 4) of the features set out above.
  • Polypeptides encoded by the polynucleotides are also encompassed by the invention.
  • columns VIII, EX, XHI, and XIV of Table I can routinely be used to determine regions of Neutrokine-alpha which exhibit a high degree of potential for antigenicity (column Vi ⁇ of Table I represents hydrophilicity according to Kyte-Doolittle; column IX of Table I represents hydrophobicity according to Hopp- Woods; column XIII of Table I represents antigenic index according to Jameson- Wolf; and column XIV of Table I represents surface probability according to Emini).
  • Regions of high antigenicity are determined from the data presented in columns VEJ, IX, XIII, and/or IV by choosing values which represent regions of the polypeptide which are likely to be exposed on the surface of the polypeptide in an environment in which antigen recognition may occur in the process of initiation of an immune response.
  • the data presented in Figure 6 can also routinely be presented in a similar tabular format by simply examining the amino acid sequence disclosed in Figure 6 (SEQ DD NO: 19) using the modules and algorithms of the DNA*STAR set on default parameters.
  • the amino acid sequence presented in Figure 6 can also be used to determine regions of Neutrokine-alpha which exhibit a high degree of potential for antigenicity whether presented as a Figure (as in Figure 6) or a table (as in Table I).
  • Lys 283 A A -1.30 0.41 * -0.60 0.33
  • nucleic acid fragments of the present invention include nucleic acid molecules comprising, or alternatively, consisting of a sequence encoding one or more epitope-bearing portions of Neutrokine-alpha.
  • nucleic acid fragments of the present invention include nucleic acid molecules comprising, or alternatively consisting of, a sequence encoding a polypeptide selected from: from about Phe-115 to about Leu-147, from about Ile-150 to about Tyr-163, from about Ser-171 to about Phe-194, from about Glu-223 to about Tyr-246, and from about Ser-271 to about Phe-278, of the amino acid sequence of SEQ ID NO:2.
  • nucleic acid fragments of the present invention include nucleic acid molecules comprising, or alternatively consisting of a sequene encoding one or more epitope-bearing portions of Neutrokine-alphaSV.
  • nucleic acid fragments of the present invention include nucleic acid molecules comprising, or alternatively consisting of a sequence encoding a polypeptide selected from about Pro-32 to about Leu-47, from about Glu-116 to about Ser-143, from about Phe-153 to about Tyr-173, from about Pro-218 to about Tyr-227, from about Ser-252 to about Thr-258, from about Ala-232 to about Gln-241; from about Ile-244 to about Ala-249; and from about Ser-252 to about Val-257, of the amino acid sequence of SEQ ID NO: 19.
  • the polynucleotides of the invention are less than 100,000 kb, 50,000 kb, 10,000 kb, 1,000 kb, 500 kb, 400 kb, 350 kb, 300 kb, 250 kb, 200 kb, 175 kb, 150 kb, 125 kb, 100 kb, 75 kb, 50 kb, 40 kb, 30 kb, 25 kb, 20 kb, 15 kb, 10 kb, 7.5 kb, or 5 kb in length.
  • polynucleotides of the invention comprise at least 15, at least 30, at least 50, at least 100, or at least 250, at least 500, or at least 1000 contiguous nucleotides of Neutrokine-alpha coding sequence, but consist of less than or equal to 1000 kb, 500 kb, 250 kb, 200 kb, 150 kb, 100 kb, 75 kb, 50 kb, 30 kb, 25 kb, 20 kb, 15 kb, 10 kb, or 5 kb of genomic DNA that flanks the 5 ' or 3' coding nucleotide set forth in Figures 1A and IB (SEQ ID NO:l) or Figures 5A and 5B (SEQ ID NO: 18).
  • polynucleotides of the invention comprise at least 15, at least 30, at least 50, at least 100, or at least 250, at least 500, or at least 1000 contiguous nucleotides of Neutrokine-alpha coding sequence, but do not comprise all or a portion of any Neutrokine-alpha intron.
  • the nucleic acid comprising Neutrokine-alpha coding sequence does not contain coding sequences of a genomic flanking gene (i.e., 5' or 3' to the Neutrokine-alpha gene in the genome).
  • the polynucleotides of the invention do not contain the coding sequence of more than 1000, 500, 250, 100, 50, 25, 20, 15, 10, 5, 4, 3, 2, or 1 genomic flanking gene(s).
  • the invention provides an isolated nucleic acid molecule comprising a polynucleotide which hybridizes under stringent hybridization conditions to a portion of the polynucleotide in a nucleic acid molecule of the invention described above, for instance, the sequence complementary to the coding and/or noncoding sequence depicted in Figures 1A and IB (SEQ ID NO:l), the sequence of the cDNA clone contained in the deposit having ATCC accession no. 97768, the sequence complementary to the coding sequence and/or noncoding sequence depicted in Figures 5A and 5B (SEQ ID NO: 18), the sequence of the cDNA clone contained in the deposit having ATCC accession no.
  • sequence complementary to the coding sequence and/or noncoding sequence depicted in SEQ ID NO:21
  • sequence complementary to the coding sequence and/or noncoding sequence depicted in SEQ ID NO:22 depicted in SEQ ID NO:17
  • sequence complementary to the coding sequence and/or noncoding sequence depicted in SEQ ID NO:27 depicted in SEQ ID NO: 29
  • sequence complementary to the coding sequence and/or noncoding sequence depicted in SEQ ID NO:37 or fragments (such as, for example, the open reading frame or a fragment thereof) of these sequences, as described herein.
  • stringent hybridization conditions is intended overnight incubation at 42°C in a solution comprising: 50% formamide, 5x SSC (750 mM NaCl, 75 mM trisodium citrate), 50 mM sodium phosphate (pH 7.6), 5x Denhardt's solution, 10% dextran sulfate, and 20 ⁇ g/ml denatured, sheared salmon sperm DNA, followed by washing the filters in O.lx SSC at about 65°C.
  • a polynucleotide which hybridizes to a "portion" of a polynucleotide is intended a polynucleotide (either DNA or RNA) hybridizing to at least about 15 nucleotides (nt), and more preferably at least about 20 nt, still more preferably at least about 30 nt, and even more preferably about 30-70 (e.g., 40, 50, or 60) nucleotides, and even more preferably about any integer in the range of 30-70 or 80-150 nucleotides, or the entire length of the reference polynucleotide.
  • nt nucleotides
  • a portion of a polynucleotide of "at least about 20 nt in length,” for example, is intended to include the particularly recited ranges, larger or smaller by several (i.e. 5, 4, 3, 2, 1, or 0) amino acids, at either extreme or at both extremes of the nucleotide sequence of the reference polynucleotide (e.g., the sequence of one or both of the deposited cDNAs, the complementary strand of the nucleotide sequence shown in Figures 1 A and IB (SEQ ED NO:l), the complementary strand of the nucleotide sequence shown in Figures 5 A and 5B (SEQ ID NO: 18), the complementary strand of the nucleotide sequence shown in SEQ ID NO:21, the complementary strand of the nucleotide sequence shown in SEQ ID NO: 22, the complementary strand of the nucleotide sequence shown in SEQ ID NO:27, the complementary strand of the nucleotide sequence shown in SEQ ID NO:29, and/or
  • a polynucleotide which hybridizes only to a poly A sequence such as the 3' terminal poly (A) tract of the Neutrokine-alpha cDNA shown in Figures 1A and IB (SEQ ID NO:l), the 3' terminal poly (A) tract of the Neutrokine-alphaSV cDNA shown in Figures 5 A and 5B (SEQ ID NO: 18) or the 3' terminal poly(A) tract of the Neutrokine-alphaSV cDNA shown in SEQ ID NO:22), or to a complementary stretch of T (or U) residues, would not be included in a polynucleotide of the invention used to hybridize to a portion of a nucleic acid of the invention, since such a polynucleotide would hybridize to any nucleic acid molecule containing a poly (A) stretch or the complement thereof (e.g., practically any double-stranded cDNA clone generated using oligo dT as a
  • nucleic acid molecules of the present invention which encode a Neutrokine-alpha polypeptide or a Neutrokine-alphaSV polypeptide may include, but are not limited to, polynucleotides encoding the amino acid sequence of the respective extracellular domains of the polypeptides, by themselves; and the coding sequence for the extracellular domains of the respective polypeptides and additional sequences, such as those encoding the intracellular and transmembrane domain sequences, or a pre-, or pro- or prepro- protein sequence; the coding sequence of the respective extracellular domains of the polypeptides, with or without the aforementioned additional coding sequences.
  • nucleic acids of the invention are the above protein sequences together with additional, non-coding sequences, including for example, but not limited to, introns and non-coding 5' and 3' sequences, such as the transcribed, non-translated sequences that play a role in transcription, mRNA processing, including splicing and polyadenylation signals, for example, ribosome binding and stability of mRNA; an additional coding sequence which codes for additional amino acids, such as those which provide additional functionalities.
  • additional, non-coding sequences including for example, but not limited to, introns and non-coding 5' and 3' sequences, such as the transcribed, non-translated sequences that play a role in transcription, mRNA processing, including splicing and polyadenylation signals, for example, ribosome binding and stability of mRNA; an additional coding sequence which codes for additional amino acids, such as those which provide additional functionalities.
  • the sequence encoding the polypeptide may be fused to a marker sequence, such as a sequence encoding a peptide which facilitates purification of the fused polypeptide.
  • the marker amino acid sequence is a hexa-histidine peptide, such as the tag provided in a pQE vector (QIAGEN, Inc., 9259 Eton Avenue, Chatsworth, CA, 91311), among others, many of which are commercially available.
  • hexa-histidine provides for convenient purification of the fusion protein.
  • the "HA” tag is another peptide useful for purification which corresponds to an epitope derived from the influenza hemagglutinin protein, which has been described by Wilson et al., Cell 37: 767 (1984).
  • other such fusion proteins include the Neutrokine-alpha or the Neutrokine-alphaSV polypeptides fused to Fc at the N- or C-terminus.
  • the present invention further relates to variants of the nucleic acid molecules of the present invention, which encode portions, analogs or derivatives of the Neutrokine-alpha or Neutrokine-alphaSV polypeptides of SEQ ID NO:2.
  • Variants may occur naturally, such as a natural allelic variant.
  • allelic variant is intended one of several alternate forms of a gene occupying a 'given locus on a chromosome of an organism. Genes II, Lewin, B., ed., John Wiley & Sons, New York (1985).
  • Non-naturally occurring variants may be produced using art-known mutagenesis techniques, which include, but are not limited to oligonucleotide mediated mutagenesis, alanine scanning, PCR mutagenesis, site directed mutagenesis (see e.g., Carter et al., Nucl. Acids Res. 13:4331 (1986); and Zoller et al, Nucl. Acids Res. 10:6487 (1982)), cassette mutagenesis (see e.g., Wells et al, Gene 34:315 (1985)), restriction selection mutagenesis (see e.g., Wells er al., Philos. Trans. R. Soc. London SerA 317:415 (1986)).
  • art-known mutagenesis techniques include, but are not limited to oligonucleotide mediated mutagenesis, alanine scanning, PCR mutagenesis, site directed mutagenesis (see e.g., Carter et al
  • Such variants include those produced by nucleotide substitutions, deletions or additions.
  • the substitutions, deletions or additions may involve one or more nucleotides.
  • the variants may be altered in coding regions, non-coding regions, or both. Alterations in the coding regions may produce conservative or non-conservative amino acid substitutions, deletions or additions. Especially preferred among these are silent substitutions, additions and deletions, which do not alter* the properties and activities of the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides or portions thereof. Also especially preferred in this regard are conservative substitutions.
  • Additional embodiments of the invention are directed to isolated nucleic acid molecules comprising a polynucleotide which encodes the amino acid sequence of a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide (e.g., a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide fragment described herein) having an amino acid sequence which contains at least one conservative amino acid substitution, but not more than 50 conservative amino acid substitutions, even more preferably, not more than 40 conservative amino acid substitutions, still more preferably, not more than 30 conservative amino acid substitutions, and still even more preferably, not more than 20 conservative amino acid substitutions, 10-20 conservative amino acid substitutions, 5-10 conservative amino acid substitutions, 1-5 conservative amino acid substitutions, 3-5 conservative amino acid substitutions, or 1-3 conservative amino acid substitutions.
  • a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide e.g., a Neutrokine-alpha and/
  • a polynucleotide which encodes the amino acid sequence of a Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide to have an amino acid sequence which contains not more than 10, 9, 8, 7, 6, 5, 4, 3, 2 or 1 conservative amino acid substitutions.
  • inventions include an isolated nucleic acid molecule comprising, or alternatively consisting of, a polynucleotide having a nucleotide sequence at least 80%, 85%, or 90% identical, and more preferably at least 95%, 96%, 97%, 98% or 99% identical to a polynucleotide selected from the group consisting of: (a) a nucleotide sequence encoding the Neutrokine-alpha polypeptide having the complete amino acid sequence in Figures 1A and IB (i.e., positions 1 to 285 of SEQ ID NO:2); (b) a nucleotide sequence encoding the Neutrokine-alpha polypeptide having the complete amino acid sequence in SEQ ID NO:2 excepting the N-terminal methionine (i.e., positions 2 to 285 of SEQ ID NO:2); (c) a fragment of the polypeptide of (b) having Neutrokine-alpha functional activity (e.g.,
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 80%, 85%, 90% identical and more preferably at least 95%, 96%, 97%, 98%, 99% or 100% identical to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO: 2).
  • Preferred embodiments of the invention are directed to nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 90% identical to a polynucleotide sequence encoding the Neutroldne- alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1 A and IB (SEQ ID NO:2).
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 95% identical to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • More preferred embodiments of the invention are directed to nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 96% identical to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 97% to a polynucleotide sequence encoding the Neutrokine- alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 98% to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 99% identical to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • a further embodiment of the invention relates to an isolated nucleic acid molecule comprising a polynucleotide which encodes the amino acid sequence of a Neutrokine-alphaSV polypeptide (e.g., a Neutrokine-alphaSV polypeptide fragment described herein) having an amino acid sequence which contains at least one conservative amino acid substitution, but not more than 50 conservative amino acid substitutions, even more preferably, not more than 40 conservative amino acid substitutions, still more preferably not more than 30 conservative amino acid substitutions, and still even more preferably not more than 20 conservative amino acid substitutions.
  • a Neutrokine-alphaSV polypeptide e.g., a Neutrokine-alphaSV polypeptide fragment described herein
  • a polynucleotide which encodes the amino acid sequence of a Neutrokine-alpha polypeptide to have an amino acid sequence which contains not more than 7-10, 5-10, 3-7, 3-5, 2-5, 1-5, 1-3, 10, 9, 8, 7, 6, 5, 4, 3, 2 or 1 conservative amino acid substitutions.
  • inventions include an isolated nucleic acid molecule comprising, or alternatively, consisting of a polynucleotide having a nucleotide sequence at least 80%, 85% or 90% identical, and more preferably at least 95%, 96%, 97%, 98% or 99% identical to a polynucleotide selected from the group consisting of: (a) a nucleotide sequence encoding the Neutrokine-alphaSV polypeptide having the complete amino acid sequence in Figures 5A and 5B (i.e., positions 1 to 266 of SEQ ID NO: 19); (b) a nucleotide sequence encoding the Neutrokine-alphaSV polypeptide having the complete amino acid sequence in SEQ ID NO: 19 excepting the N-terminal methionine (i.e., positions 2 to 266 of SEQ ID NO:2); (c) a nucleotide sequence encoding the predicted extracellular domain of the Neutrokine-alphaSV poly
  • the invention includes a polynucleotide comprising, or alternatively, consisting of, a sequence at least 90%, or at least 95%, identical to any portion of at least about 10 contiguous nucleotides, about 20 contiguous nucleotides, about 25 contiguous nucleotides, or about 30 contiguous nucleotides, preferably at least about 40 nucleotides, or at least about 50 nucleotides, of the sequence from nucleotide 1 to nucleotide 1082 in Figures 1A and IB (SEQ ED NO:l), preferably excluding the nucleotide sequences determined from the above-listed 4 cDNA clones and the nucleotide sequences from nucleotide 797 to 1082, 810 to 1082, and 346 to 542.
  • the invention also includes a polynucleotide comprising, or alternatively consisting of, a sequence at least 90%, or at least 95%, identical to any portion of at least about 10 contiguous nucleotides, about 20 contiguous nucleotides, about 25 contiguous nucleotides, or about 30 contiguous nucleotides, preferably at least about 40 nucleotides, or at least about 50 nucleotides, of the sequence in Figures 5A and 5B (SEQ ED NO: 18), preferably excluding the nucleotide sequences determined from the above-listed 4 cDNA clones.
  • the invention also includes a polynucleotide comprising, or alternatively consisting of a sequence at least 90%, or at least 95%, identical to any portion of at least about 10 contiguous nucleotides, about 20
  • contiguous nucleotides about 25 contiguous nucleotides, or about 30 contiguous nucleotides, preferably at least about 40 nucleotides, or at least about 50 nucleotides, of the sequence in SEQ ED NO:21, preferably excluding the nucleotide sequences determined from the above-listed 4 cDNA clones.
  • the invention also includes a polynucleotide comprising a sequence at least 90%, or at least 95%, identical to any portion of at least about 10 contiguous nucleotides, about 20 contiguous nucleotides, about 25 contiguous nucleotides, or about 30 contiguous nucleotides, preferably at least about 40 nucleotides, or at least about 50 nucleotides, of the sequence in SEQ ID NO:22, preferably excluding the nucleotide sequences determined from the above-listed 4 cDNA clones.
  • the invention also includes a polynucleotide comprising a sequence at least 90%, or at least 95%, identical to any portion of at least about 10 contiguous nucleotides, about 20 contiguous nucleotides, about 25 contiguous nucleotides, or about 30 contiguous nucleotides, preferably at least about 40 nucleotides, or at least about 50 nucleotides, of the sequence in SEQ ID NO: 27, preferably excluding the nucleotide sequences determined from the above-listed 4 cDNA clones.
  • the invention also includes a polynucleotide comprising a sequence at least 90%, or at least 95%, identical to any portion of at least about 10 contiguous nucleotides, about 20 contiguous nucleotides, about 25 contiguous nucleotides, or about 30 contiguous nucleotides, preferably at least about 40 nucleotides, or at least about 50 nucleotides, of the sequence in SEQ ID NO:29, preferably excluding the nucleotide sequences determined from the above-listed 4 cDNA clones.
  • the invention also includes a polynucleotide comprising a sequence at least 90%, or at least 95%, identical to any portion of at least about 10 contiguous nucleotides, about 20 contiguous nucleotides, about 25 contiguous nucleotides, or about 30 contiguous nucleotides, preferably at least about 40 nucleotides, or at least about 50 nucleotides, of the sequence in SEQ ID NO:37, preferably excluding the nucleotide sequences determined from the above-listed 4 cDNA clones.
  • “about” includes the particularly recited ranges, larger or smaller by several (i.e. 5, 4, 3, 2 or 1) amino acids, at either extreme or at both extremes.
  • nucleotide sequence at least, for example, 95% "identical" to a reference nucleotide sequence encoding a Neutroldne-alpha and/or Neutrokine-alphaSV polypeptide is intended that the nucleotide sequence of the polynucleotide is identical to the reference sequence except that the polynucleotide sequence may include up to five mismatches per each 100 nucleotides of the reference nucleotide sequence encoding the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide.
  • a polynucleotide having a nucleotide sequence at least 95% identical to a reference nucleotide sequence up to 5% of the nucleotides in the reference sequence may be deleted or substituted with another nucleotide, or a number of nucleotides up to 5% of the total nucleotides in the reference sequence may be inserted into the reference sequence.
  • These mutations of the reference sequence may occur at the 5 ' or 3' terminal positions of the reference nucleotide sequence or anywhere between those terminal positions, interspersed either individually among nucleotides in the reference sequence or in one or more contiguous groups within the reference sequence.
  • the reference (query) sequence may be the entire nucleotide sequence encoding Neutrokine- alpha or Neutrokine-alphaSV, as shown in Figures 1A and IB (SEQ ED NO:l) and Figures 5A and 5B (SEQ ID NO:18), respectively, or any Neutrokine-alpha such as, for example, the Neutrokine-alpha polynucleotides shown as SEQ ID NOs:21, 22, 27, 29, or 37, or any Neutrokine-alpha or Neutrokine-alphaSV polynucleotide fragment as described herein.
  • nucleic acid molecule is at least 80%, 85%, 90%, 95%, 96%, 97%, 98% or 99% identical to, for instance, the nucleotide sequences shown in Figures 1A and IB, or the nucleotide sequences shown in Figures 5A and 5B, or to the nucleotides sequence of the deposited cDNA clones, or to any Neutrokine-alpha polynucleotide such as, for example, the Neutrokine-alpha polynucleotides shown as SEQ ED NOs:21, 22, 27, 29, or 37, or fragments thereof, can be determined conventionally using known computer programs such as the Bestfit program (Wisconsin Sequence Analysis Package, Version 8 for Unix, Genetics Computer Group, University Research Park, 575 Science Drive, Madison, WI 53711).
  • Bestfit uses the local homology algorithm of Smith and Waterman to find the best segment of homology between two sequences (Advances in Applied Mathematics 2:482-489 (1981)).
  • Bestfit or any other sequence alignment program to determine whether a particular sequence is, for instance, 95% identical to a reference sequence according to the present invention, the parameters are set, of course, such that the percentage of identity is calculated over the full length of the reference nucleotide sequence and that gaps in homology of up to 5% of the total number of nucleotides in the reference sequence are allowed.
  • the identity between a reference (query) sequence (a sequence of the present invention) and a subject sequence is determined using the FASTDB computer program based on the algorithm of Brutlag and colleagues (Comp. App. Biosci. 6:237-245 (1990)).
  • a sequence alignment the query and subject sequences are both DNA sequences.
  • An RNA sequence can be compared by converting U's to T's. The result of said global sequence alignment is in percent identity.
  • the percent identity is corrected by calculating the number of bases of the query sequence that are 5' and 3' of the subject sequence, which are not matched/aligned, as a percent of the total bases of the query sequence. A determination of whether a nucleotide is matched/aligned is determined by results of the FASTDB sequence alignment. This percentage is then subtracted from the percent identity, calculated by the above FASTDB program using the specified parameters, to arrive at a final percent identity score. This corrected score is what is used for the purposes of this embodiment.
  • a 90 base subject sequence is compared with a 100 base query sequence. This time the deletions are internal deletions so that there are no bases on the 5' or 3' of the subject sequence which are not matched/aligned with the query. In this case the percent identity calculated by FASTDB is not manually corrected. Once again, only bases 5' and 3' of the subject sequence which are not matched/aligned with the query sequence are manually corrected for. No other manual corrections are made for the purposes of this embodiment.
  • nucleic acid molecules at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the nucleic acid sequences (i.e., polynucleotides) disclosed herein (e.g., those disclosed in Figures 1A and IB (SEQ ED NO:l) or to the nucleic acid sequence of the deposited cDNAs), irrespective of whether they encode a polypeptide having Neutrokine-alpha and or Neutrokine-alphaSV functional activity (e.g., biological activity).
  • nucleic acid sequences i.e., polynucleotides
  • nucleic acid molecules at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the nucleic acid sequence shown in Figures 5 A and 5B (SEQ ED NO: 18) or to the nucleic acid sequence of the deposited cDNA, irrespective of whether they encode a polypeptide having Neutrokine-alphaSV activity.
  • nucleic acid molecules at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98%, 99% identical to the nucleic acid sequence shown in SEQ ID NOs:21, 22, 27, 29, or 37, irrespective of whether they encode a polypeptide having Neutrokine-alpha activity. This is because even where a particular nucleic acid molecule does not encode a polypeptide having Neutrokine-alpha and/or Neutrokine-alphaSV activity, one of skill in the art would still know how to use the nucleic acid molecule, for instance, as a hybridization probe or a polymerase chain reaction (PCR) primer.
  • PCR polymerase chain reaction
  • nucleic acid molecules of the present invention that do not encode a polypeptide having Neutrokine-alpha and/or Neutrokine-alphaSV activity include, inter alia, (1) isolating the Neutrokine-alpha and/or Neutrokine-alphaSV gene or allelic variants thereof in a cDNA library; (2) in situ hybridization (e.g., "FISH") to metaphase chromosomal spreads to provide precise chromosomal location of the Neutrokine-alpha and/or Neutrokine-alphaSV gene, as described in Verma et al., Human Chromosomes: A Manual of Basic Techniques, Pergamon Press, New York (1988); and Northern Blot analysis for detecting Neutrokine-alpha and/or Neutrokine-alphaSV mRNA expression in specific tissues.
  • FISH in situ hybridization
  • nucleic acid molecules having sequences at least 80%, 85%, 90%, 92%, 95%), 96%, 97%, 98% or 99% identical to the nucleic acid -sequences disclosed herein (e.g., the nucleotide sequence shown in Figures 1A and IB (SEQ ED NO:l) and the nucleic acid sequence of the deposited cDNAs, or fragments thereof), which do, in fact, encode a polypeptide having Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide functional activity (e.g., biological activity).
  • nucleic acid molecules having sequences at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the nucleic acid sequence shown in Figures 5A and 5B (SEQ ID NO: 18) or to the nucleic acid sequence of the deposited cDNA which do, in fact, encode a polypeptide having Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide functional activity (e.g., biological activity).
  • nucleic acid molecules having sequences at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the nucleic acid sequence shown SEQ DD NOs:21, 22, 27, 29, or 37, which do, in fact, encode a polypeptide having Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide functional activity (e.g., biological activity).
  • a polypeptide having Neutrokine-alpha polypeptide functional activity e.g., biological activity
  • a polypeptide having Neutrokine-alphaSV polypeptide functional activity e.g., biological activity
  • polypeptide having Neutrokine-alphaSV polypeptide functional activity e.g., biological activity
  • polypeptide having Neutrokine-alphaSV polypeptide functional activity e.g., biological activity
  • Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide functional activity can be measured by the ability of a polypeptide sequence described herein to form multimers (e.g., homodimers and homotrimers) with the complete Neutrokine-alpha and/or Neutrokine-alphaSV or extracellular domain of Neutrokine-alpha and/or Neutrokine- alphaSV, and to bind a Neutrokine-alpha and/or Neutrokine-alphaSV ligand.
  • multimers e.g., homodimers and homotrimers
  • Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide functional activity can be measured by the ability of a polypeptide sequence described herein to form heteromultimers with APRIL (e.g., SEQ ID NO:20 and SEQ ED NO:47) or APRIL fragments or variants, especially the extracellular soluble domain of APRIL (e.g., amino acids 105-250 of SEQ ID NO:47).
  • APRIL e.g., SEQ ID NO:20 and SEQ ED NO:47
  • APRIL fragments or variants especially the extracellular soluble domain of APRIL (e.g., amino acids 105-250 of SEQ ID NO:47).
  • Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide functional activity can be also be measured by determining the ability of a polypeptide of the invention to induce lymphocyte (e.g., B cell) proliferation, differentiation or activation and/or to extend B cell survival.
  • Neutrokine-alpha or Neutrokine-alphaSV polypeptides of the present invention modulate cell proliferation, cytotoxicity, cell survival and cell death.
  • An in vitro cell proliferation, cytotoxicity, cell survival, and cell death assay for measuring the effect of a protein on certain cells can be performed by using reagents well known and commonly available in the art for detecting cell replication and/or death. For instance, numerous such assays for TNF-related protein activities are described in the various references in this disclosure.
  • an example of such an assay involves collecting human or animal (e.g., mouse) cells and mixing with (1) transfected host cell-supernatant containing Neutrokine-alpha protein (or a candidate polypeptide) or (2) nontransfected host cell-supernatant control, and measuring the effect on cell numbers or viability after incubation of certain period of time.
  • transfected host cell-supernatant containing Neutrokine-alpha protein (or a candidate polypeptide) or (2) nontransfected host cell-supernatant control and measuring the effect on cell numbers or viability after incubation of certain period of time.
  • Such cell proliferation and/or survival modulation activities as can be measured in this type of assay are useful for treating tumor, tumor metastasis, infections, autoimmune diseases, inflammation and other immune-related diseases.
  • Neutrokine-alpha modulates cell proliferation and differentiation in a dose-dependent manner in the above-described assay. Accordingly, it is preferred that "a polypeptide having Neutrokine-alpha polypeptide functional activity" (e.g., biological activity) includes polypeptides that also exhibit any of the same cell modulatory (particularly immunomodulatory) activities in the above-described assays in a dose-dependent manner.
  • a polypeptide having Neutrokine-alpha polypeptide functional activity will exhibit substantially similar dose-dependence in a given activity as compared to the Neutrokine-alpha polypeptides (i.e., the candidate polypeptide will exhibit greater activity or not more than about 25-fold less and, preferably, not more than about tenfold less activity relative to the reference Neutrokine-alpha polypeptides).
  • a polypeptide having Neutrokine-alpha polypeptide functional activity e.g., biological activity
  • a polypeptide having Neutrokine-alphaSV polypeptide functional activity includes polypeptides that also exhibit any of the same B cell (or other cell type) modulatory (particularly immunomodulatory) activities described in Figures 8A, 8B, 8C, 9A, 9B, 10A, 10B, IOC, 10D, 10E, 10F, 11 A, 11B, 11C, 11D, HE, and 1 IF and in Example 6.
  • Neutrokine-alpha Like other members of TNF family, Neutrokine-alpha exhibits activity on leukocytes including, for example, monocytes, lymphocytes (e.g., B cells) and neutrophils. For this reason Neutrokine-alpha is active in directing the proliferation, differentiation and migration of these cell types. Such activity is useful for immune enhancement or suppression, myeloprotection, stem cell mobilization, acute and chronic inflammatory control and treatment of leukemia. Assays for measuring such activity are known in the art. For example, see Peters et al., Immun. Today 17:273 (1996); Young et al., J. Exp. Med. 182:1111 (1995); Caux et al., Nature 390:258 (1992); and Santiago-Schwarz et al., Adv. Exp. Med. Biol. 378:7 (1995).
  • leukocytes including, for example, monocytes, lymphocytes (e.g., B cells) and neutrophils
  • nucleic acid molecules having a sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98%, or 99% identical to the nucleic acid sequence contained in cDNA clone deposited in ATCC accession no. 97768, or the nucleic acid sequence shown in Figures 1A and IB (SEQ ED NO:l), or fragments thereof, will encode a polypeptide "having Neutrokine-alpha polypeptide functional activity" (e.g., biological activity).
  • nucleic acid molecules having a sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98%, or 99% identical to the nucleic acid sequence contained in cDNA clone deposited in ATCC accession no. 203518 or the nucleic acid sequence shown in Figures 5 A and 5B (SEQ ED NO: 18) will encode a polypeptide "having Neutrokine-alphaSV polypeptide functional activity" (e.g., biological activity).
  • Neutrokine-alphaSV polypeptide functional activity e.g., biological activity
  • nucleic acid molecules that are not degenerate variants, a reasonable number will also encode a polypeptide having Neutroldne-alpha and/or Neutrokine-alphaSV activity. This is because the skilled artisan is fully aware of amino acid substitutions that are either less likely or not likely to significantly effect protein function (e.g., replacing one aliphatic amino acid with a second aliphatic amino acid), as further described below.
  • polynucleotides encoding polypeptides which contain all or some portion of the region V-142 through K-160 of SEQ ID NO:2 are likely to be valuable diagnostic and therapeutic polynucleotides with regard to detecting and/or altering expression of either Neutrokine-alpha or Neutrokine-alphaSV polynucleotides.
  • polynucleotides which span the junction of amino acid residues T-141 and G-142 of the Neutrokine-alphaSV polypeptide shown in SEQ ID NO: 19 are also likely to be useful both diagnostically and therapeutically.
  • a partial, non-limiting, non-exclusive list of such Neutrokine-alphaSV polypeptides which are encoded by polynucleotides of the invention includes polypeptides comprising, or alternatively consisting of, an amino acid sequence selected from the following: G-121 through E-163; E-122 through E-163; G-123 through E-163; N-124 through E-163; S-125 through E-163; S-126 through E-163; Q-127 through E-163; N-128 through E-163; S-129 through E-163; R-130 through E-163; N-131 through E-163; K-132 through E-163; R-133 through E-163; A-134 through E-163; V-135 through E-163; Q-136 through E-163; G-121 through E-163; E-122 through E-163; G-123 through E-163; N-124 through E-163; S-125 through E-163; S-126 through E-163; Q-127 through E-163; N-128 through E
  • the present invention also relates to vectors which include the isolated DNA molecules of the present invention, host cells which are genetically engineered with the recombinant vectors, or which are otherwise engineered to produce the polypeptides of the invention, and the production of Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides, or fragments thereof, by recombinant or synthetic techniques.
  • the polynucleotides of the invention are joined to a vector (e.g., a cloning or expression vector).
  • the vector may be, for example, a phage, plasmid, viral or retroviral vector. Retroviral vectors may be replication competent or replication defective.
  • the polynucleotides may be joined to a vector containing a selectable marker for propagation in a host.
  • Introduction of the vector construct into the host cell can be effected by techniques known in the art which include, but are not limited to, calcium phosphate transfection, DEAE-dextran mediated transfection, cationic lipid-mediated transfection, electroporation, transduction, infection or other methods. Such methods are described in many standard laboratory manuals, such as Davis et al., Basic Methods In Molecular Biology (1986),
  • recombinant expression vectors will include origins of replication and selectable markers permitting transformation of the host cell, e.g., the ampicillin resistance gene of E. coli and S. cerevisiae TRPl gene, and a promoter derived from a highly-expressed gene to direct transcription of a downstream structural sequence.
  • promoters can be derived from operons encoding glycolytic enzymes such as 3-phosphoglycerate kinase (PGK), a-factor, acid phosphatase, or heat shock proteins, among others.
  • PGK 3-phosphoglycerate kinase
  • the heterologous structural sequence is assembled in appropriate phase with translation initiation and termination sequences, and preferably, a leader sequence capable of directing secretion of translated protein into the periplasmic space or extracellular medium.
  • the heterologous sequence can encode a fusion protein including an N-terminal identification peptide imparting desired characteristics, for example, stabilization or simplified purification of expressed recombinant product.
  • the DNA of the invention is operatively associated with an appropriate heterologous regulatory element (e.g., promoter or enhancer), such as, the phage lambda PL promoter, the E. coli lac, trp, phoA, and tac promoters, the SV40 early and late promoters and promoters of retroviral LTRs, to name a few.
  • an appropriate heterologous regulatory element e.g., promoter or enhancer
  • promoter or enhancer such as, the phage lambda PL promoter, the E. coli lac, trp, phoA, and tac promoters, the SV40 early and late promoters and promoters of retroviral LTRs, to name a few.
  • promoter or enhancer such as, the phage lambda PL promote
  • the expression vectors will preferably include at least one selectable marker.
  • markers include dihydrofolate reductase, G418 or neomycin resistance for eukaryotic cell culture and tetracycline, kanamycin or ampicillin resistance genes for culturing in E. coli and other bacteria.
  • Representative examples of appropriate hosts include, but are not limited to, bacterial cells, such as E. coli, Streptomyces and Salmonella typhimurium cells; fungal cells, such as yeast cells (e.g., Saccharomyces cerevisiae or Pichia pastoris (ATCC Accession No.
  • insect cells such as Drosophila S2 and Spodoptera Sf9 cells
  • animal cells such as CHO, COS, 293 and Bowes melanoma cells
  • plant cells Appropriate culture mediums and conditions for the above-described host cells are known in the art.
  • the host cell can be a higher eukaryotic cell, such as a mammalian cell (e.g., a human derived cell), or a lower eukaryotic cell, such as a yeast cell, or the host cell can be a prokaryotic cell, such as a bacterial cell.
  • the host strain may be chosen which modulates the expression of the inserted gene sequences, or modifies and processes the gene product in the specific fashion desired. Expression from certain promoters can be elevated in the presence of certain inducers; thus expression of the genetically engineered polypeptide may be controlled.
  • different host cells have characteristics and specific mechanisms for the translational and post-translational processing and modification (e.g., phosphorylation, cleavage) of proteins.
  • Appropriate cell lines can be chosen to ensure the desired modifications and processing of the foreign protein expressed.
  • Selection of appropriate vectors and promoters for expression in a host cell is a well-known procedure and the requisite techniques for expression vector construction, introduction of the vector into the host and expression in the host are routine skills in the art.
  • Useful expression vectors for bacterial use are constructed by inserting a structural DNA sequence encoding a desired protein together with suitable translation initiation and termination signals in operable reading phase with a functional promoter.
  • the vector will comprise one or more phenotypic selectable markers and an origin of replication to ensure maintenance of the vector and to, if desirable, provide amplification within the host.
  • Suitable prokaryotic hosts for transformation include E. coli, Bacillus subt ⁇ lis, Salmonella typhimurium, and various species within the genera Pseudomonas, Streptomyces, and Staphylococcus, although others may also be employed as a matter of choice.
  • useful expression vectors for bacterial use can comprise a selectable marker and bacterial origin of replication derived from commercially available plasmids comprising genetic elements of the well-known cloning vector pBR322 (ATCC 37017).
  • cloning vector pBR322 ATCC 37017
  • Such commercial vectors include, for example, pKK223-3 (Pharmacia Fine Chemicals, Uppsala, Sweden) and G ⁇ M1 (Promega Biotec, Madison, WI, USA).
  • pBR322 "backbone" sections are combined with an appropriate promoter and the structural sequence to be expressed.
  • vectors preferred for use in bacteria include pH ⁇ 4-5 (ATCC Accession No.
  • pQE70, pQE60 and pQE-9 available from QIAGEN, Inc., supra; pBS vectors, Phagescript vectors, Bluescript vectors, pNH8A, pNH16a, pNH18A, pNH46A, available from Stratagene; and ptrc99a, pKK223-3, pKK233-3, pDR540, pRIT5 available from Pharmacia.
  • Preferred expression vectors for use in yeast systems include, but are not limited to, pYES2, pYDl, pTEFl/Zeo, pYES2/GS, pPICZ, pGAPZ, pGAPZalpha, pPIC9, pPIC3.5, pHEL-D2, pHEL-Sl, pPIC3.5K, pPIC9K, and PAO815 (all available from Invitrogen, Carlsbad, CA).
  • preferred eukaryotic vectors are pWLNEO, pSV2CAT, pOG44, pXTl and pSG available from Stratagene; and pSVK3, pBPV, pMSG and pSVL (available from Pharmacia). Other suitable vectors will be readily apparent to the skilled artisan.
  • the selected promoter is induced by appropriate means (e.g., temperature shift or chemical induction) and cells are cultured for an additional period.
  • appropriate means e.g., temperature shift or chemical induction
  • Cells are typically harvested by centrifugation, disrupted by physical or chemical means, and the resulting crude extract retained for further purification.
  • yeast Pichia pastoris is used to express Neutrokine- alpha protein in a eukaryotic system.
  • Pichia pastoris is a methylotrophic yeast which can metabolize methanol as its sole carbon source.
  • a main step in the methanol metabolization pathway is the oxidation of methanol to formaldehyde using O 2 . This reaction is catalyzed by the enzyme alcohol oxidase.
  • Pichia pastoris In order to metabolize methanol as its sole carbon source, Pichia pastoris must generate high levels of alcohol oxidase due, in part, to the relatively low affinity of alcohol oxidase for O 2 . Consequently, in a growth medium depending on methanol as a main carbon source, the promoter region of one of the two alcohol oxidase genes (AOX1) is highly active. In the presence of methanol, alcohol oxidase produced from the AOX1 gene comprises up to approximately 30% of the total soluble protein in Pichia pastoris. See, Ellis, S.B., et al., Mol. Cell Biol.
  • a heterologous coding sequence such as, for example, a Neutrokine-alpha or Neutrokine-alphaSV polynucleotide of the present invention, under the transcriptional regulation of all or part of the AOX1 regulatory sequence is expressed at exceptionally high levels in Pichia yeast grown in the presence of methanol.
  • the plasmid vector pPIC9K is used to express DNA encoding a Neutrokine-alpha or Neutrokine-alphaSV polypeptide of the invention, as set forth herein, in a Pichea yeast system essentially as described in "Pichia Protocols: Methods in Molecular Biology," D.R. Higgins and J. Cregg, eds. The Humana Press, Totowa, NJ, 1998.
  • This expression vector allows expression and secretion of a Neutrokine-alpha or Neutrokine-alphaSV protein of the invention by virtue of the strong AOX1 promoter linked to the Pichia pastoris alkaline phosphatase (PHO) secretory signal peptide (i.e., leader) located upstream of a multiple cloning site.
  • PHO Pichia pastoris alkaline phosphatase
  • yeast vectors could be used in place of pPIC9K, such as, pYES2, pYDl, pTEFl/Zeo, pYES2/GS, pPICZ, pGAPZ, pGAPZalpha, pPIC9, pPIC3.5, pHIL- D2, pHEL-Sl, pPIC3.5K, and PAO815, as one skilled in the art would readily appreciate, as long as the proposed expression construct provides appropriately located signals for transcription, translation, secretion (if desired), and the like, including an in-frame AUG as required.
  • high-level expression of a heterologous coding sequence such as, for example, a Neutrokine-alpha or Neutrokine-alphaSV polynucleotide of the present invention, may be achieved by cloning the heterologous polynucleotide of the invention into an expression vector such as, for example, pGAPZ or pGAPZalpha, and growing the yeast culture in the absence of methanol.
  • Enhancers are cw-acting elements of DNA, usually about from 10 to 300 bp that act on a promoter to increase its transcription. Examples including the SV40 enhancer on the late side of the replication origin bp 100 to 270, a cytomegalovirus early promoter enhancer, the polyoma enhancer on the late side of the replication origin, and adenovirus enhancers.
  • SV40 enhancer on the late side of the replication origin bp 100 to 270
  • a cytomegalovirus early promoter enhancer the polyoma enhancer on the late side of the replication origin
  • adenovirus enhancers adenovirus enhancers.
  • Various mammalian cell culture systems can also be employed to express recombinant protein.
  • mammalian expression systems include the COS-7 lines of monkey kidney fibroblasts, described by Gluzman (Cell 23:175 (1981)), and other cell lines capable of expressing a compatible vector, for example, the C127, 3T3, CHO, HeLa and BHK cell lines.
  • Mammalian expression vectors will comprise an origin of replication, a suitable promoter and enhancer, and also any necessary ribosome binding sites, polyadenylation site, splice donor and acceptor sites, transcriptional termination sequences, and 5' flanking nontranscribed sequences. DNA sequences derived from the SV40 splice, and polyadenylation sites may be used to provide the required nontranscribed genetic elements.
  • constructs designed to express a portion of the extracellular domain of the Neutrokine-alpha are preferred.
  • One of skill in the art would be able to use the polynucleotide and polypeptide sequences provided as SEQ ED NO:l and SEQ ED NO:2, respectively, or SEQ ED NO: 18 and SEQ ED NO: 19, respectively, to design polynucleotide primers to generate such an expression construct.
  • constructs designed to express the entire predicted extracellular domain of the Neutrokine-alpha are preferred.
  • One of skill in the art would be able to use the polynucleotide and polypeptide sequences provided as SEQ ID NO:l and SEQ ID NO:2, respectively, or SEQ ID NO: 18 and SEQ ED NO: 19, respectively, to design polynucleotide primers to generate such an expression construct.
  • the invention also encompasses primary, secondary, and immortalized host cells of vertebrate origin, particularly mammalian origin, that have been engineered to delete or replace endogenous genetic material (e.g., Neutrokine-alpha coding sequence), and/or to include genetic material (e.g., heterologous polynucleotide sequences) that is operably associated with Neutrokine-alpha polynucleotides of the invention, and which activates, alters, and/or amplifies endogenous Neutrokine-alpha polynucleotides.
  • endogenous genetic material e.g., Neutrokine-alpha coding sequence
  • genetic material e.g., heterologous polynucleotide sequences
  • heterologous control regions e.g., promoter and/or enhancer
  • endogenous Neutrokine-alpha polynucleotide sequences via homologous recombination
  • heterologous control regions e.g., promoter and/or enhancer
  • endogenous Neutrokine-alpha polynucleotide sequences via homologous recombination
  • the host cells described infra can be used in a conventional manner to produce the gene product encoded by the recombinant sequence.
  • cell-free translation systems can also be employed to produce the polypeptides of the invention using RNAs derived from the DNA constructs of the present invention.
  • the polypeptide of the invention may be expressed or synthesized in a modified form, such as a fusion protein (comprising the polypeptide joined via a peptide bond to a heterologous protein sequence (of a different protein)), and may include not only secretion signals, but also additional heterologous functional regions.
  • Such a fusion protein can be made by ligating polynucleotides of the invention and the desired nucleic acid sequence encoding the desired amino acid sequence to each other, by methods known in the art, in the proper reading frame, and expressing the fusion protein product by methods known in the art.
  • a fusion protein can be made by protein synthetic techniques, e.g., by use of a peptide synthesizer.
  • a region of additional amino acids, particularly charged amino acids may be added to the N-terminus of the polypeptide to improve stability and persistence in the host cell, during purification, or during subsequent handling and storage.
  • peptide moieties may be added to the polypeptide to facilitate purification. Such regions may be removed prior to final preparation of the polypeptide.
  • the addition of peptide moieties to polypeptides to engender secretion or excretion, to improve stability and to facilitate purification, among others, are familiar and routine techniques in the art.
  • polynucleotides encoding Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the invention may be fused to signal sequences which will direct the localization of a protein of the invention to particular compartments of a prokaryotic or eukaryotic cell and/or direct the secretion of a protein of the invention from a prokaryotic or eukaryotic cell.
  • signal sequences which will direct the localization of a protein of the invention to particular compartments of a prokaryotic or eukaryotic cell and/or direct the secretion of a protein of the invention from a prokaryotic or eukaryotic cell.
  • E. coli one may wish to direct the expression of the protein to the periplasmic space.
  • Examples of signal sequences or proteins (or fragments thereof) to which the polypeptides of the invention may be fused in order to direct the expression of the polypeptide to the periplasmic space of bacteria include, but are not limited to, the pelB signal sequence, the maltose binding protein (MBP) signal sequence, MBP, the ompA signal sequence, the signal sequence of the periplasmic E. coli heat-labile enterotoxin B-subunit, and the signal sequence of alkaline phosphatase.
  • MBP maltose binding protein
  • ompA the signal sequence of the periplasmic E. coli heat-labile enterotoxin B-subunit
  • alkaline phosphatase Several vectors are commercially available for the construction of fusion proteins which will direct the localization of a protein, such as the pMAL series of vectors (particularly the pMAL-p series) available from New England Biolabs.
  • polynucleotides encoding Neutrokine-alpha and or Neutrokine-alphaSV polypeptides of the invention may be fused to the pelB pectate lyase signal sequence to increase the efficiency of expression and purification of such polypeptides in Gram- negative bacteria. See, U.S. Patent Nos. 5,576,195 and 5,846,818, the contents of which are herein incorporated by reference in their entireties.
  • Examples of signal peptides that may be fused to a polypeptide of the invention in order to direct its secretion in mammalian cells include, but are not limited to, the MPIF-1 signal sequence (amino acids 1-21 of GenBank Accession number AAB51134), the stanniocalcin signal sequence (MLQNSAVLLLLVISASA, SEQ ID NO:45), and a consensus signal sequence (MPTWAWWLFLVLLLALWAPARG, SEQ ID NO:46).
  • a suitable signal sequence that may be used in conjunction with baculoviral expression systems is the gp67 signal sequence, (amino acids 1-19 of GenBank Accession Number AAA72759).
  • a preferred fusion protein comprises a heterologous region from immunoglobulin that is useful to stabilize and purify proteins.
  • EP-A-O 464 533 (Canadian counterpart 2045869) discloses fusion proteins comprising various portions of constant region of immunoglobulin molecules together with another human protein or part thereof.
  • the Fc part in a fusion protein is thoroughly advantageous for use in therapy and diagnosis and thus results, for example, in improved pharmacokinetic properties (EP-A 0232 262).
  • Fc portion proves to be a hindrance to use in therapy and diagnosis, for example when the fusion protein is to be used as antigen for immunizations.
  • human proteins, such as hEL-5 has been fused with Fc portions for the purpose of high-throughput screening assays to identify antagonists of hEL-5. See, D. Bennett et al., J. Molecular Recognition 8:52-58 (1995) and K. Johanson et al, I. Biol. Chem. 270:9459-9471 (1995).
  • Polypeptides of the present invention include naturally purified products, products of chemical synthetic procedures, and products produced by recombinant techniques from a prokaryotic or eukaryotic host, including, for example, bacterial, yeast, higher plant, insect and mammalian cells. Depending upon the host employed in a recombinant production procedure, the polypeptides of the present invention may be glycosylated or may be non-glycosylated. In addition, polypeptides of the invention may also include an initial modified methionine residue, in some cases as a result of host-mediated processes.
  • Polypeptides of the invention can be chemically synthesized using techniques known in the art (e.g., see Creighton, 1983, Proteins: Structures and Molecular Principles, W.H. Freeman & Co., N.Y., and Hunkapiller, M., et al., 1984, Nature 310:105-111).
  • a peptide corresponding to a fragment of the complete Neutrokine-alpha or Neutrokine-alphaSV polypeptides of the invention can be synthesized by use of a peptide synthesizer.
  • nonclassical amino acids or chemical amino acid analogs can be introduced as a substitution or addition into the Neutrokine-alpha or Neutrokine-alphaSV polynucleotide sequence.
  • Non-classical amino acids include, but are not limited to, to the D-isomers of the common amino acids, 2,4-diaminobutyric acid, a- amino isobutyric acid, 4-aminobutyric acid, Abu, 2-amino butyric acid, g-Abu, e-Ahx, 6-amino hexanoic acid, Aib, 2-amino isobutyric acid, 3-amino propionic acid, ornithine, norleucine, norvaline, hydroxyproline, sarcosine, citrulline, homocitrulline, cysteic acid, t- butylglycine, t-butylalanine, phenylglycine, cyclohexylalanine,
  • the invention encompasses Neutrokine-alpha or Neutrokine-alphaSV polypeptides which are differentially modified during or after translation, e.g., by glycosylation, acetylation, phosphorylation, amidation, derivatization by known protecting blocking groups, proteolytic cleavage, linkage to an antibody molecule or other cellular ligand, etc. Any of numerous chemical modifications may be carried out by known techniques, including but not limited, to specific chemical cleavage by cyanogen bromide, trypsin, chymotrypsin, papain, V8 protease, NaBR-., acetylation, formylation, oxidation, reduction, metabolic synthesis in the presence of tunicamycin, etc.
  • Additional post-translational modifications encompassed by the invention include, for example, e.g., N-linked or O-linked carbohydrate chains, processing of N-terminal or C-terminal ends), attachment of chemical moieties to the amino acid backbone, chemical modifications of N-linked or O-linked carbohydrate chains, and addition or deletion of an N-terminal methionine residue as a result of procaryotic host cell expression.
  • the polypeptides may also be modified with a detectable label, such as an enzymatic, fluorescent, radioisotopic or affinity label to allow for detection and isolation of the protein.
  • suitable enzymes include horseradish peroxidase, alkaline phosphatase, beta-galactosidase, glucose oxidase or acetylcholinesterase; examples of suitable prosthetic group complexes include streptavidin/biotin and avidin biotin; examples of suitable fluorescent materials include biotin, umbelliferone, fluorescein, fluorescein isothiocyanate, rhodamine, dichlorotriazinylamine fluorescein, dansyl chloride or phycoerythrin; an example of a luminescent material includes luminol; examples of bioluminescent materials include luciferase, luciferin, and aequorin; and examples of suitable radioactive material include a radioactive metal ion, e.g., alpha-emitters such as, for example, Bi, or other radioisotopes such as, for example, iodine ( I, I, I, I),
  • Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the invention are attached to macrocyclic chelators useful for conjugating radiometal ions, including but not limited to, Sm, to polypeptides.
  • the radiometal ion associated with the macrocyclic chelators attached to Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the invention is ⁇ In.
  • the radiometal ion associated with the macrocyclic chelator attached to Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the invention is 90 Y.
  • the macrocyclic chelator is 1,4,7, 10-tetraazacyclododecane-N,N',N",N'"-tetraacetic acid (DOTA).
  • DOTA is attached to the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide of the invention via a linker molecule.
  • linker molecules useful for conjugating DOTA to a polypeptide are commonly known in the art - see, for example, DeNardo et al., Clin Cancer Res. 4(10):2483-90, 1998; Peterson et al., Bioconjug. Chem. 10(4):553-7, 1999; and Zimmerman et al, Nucl. Med.
  • Neutrokine-alpha and or Neutrokine-alphaSV polypeptides of the invention may be labeled with biotin.
  • biotinylated Neutroldne-alpha and or Neutrokine-alphaSV polypeptides of the invention may be used, for example, as an imaging agent or as a means of identifying one or more Neutrokine-alpha and/or Neutrokine-alphaSV receptor(s) or other coreceptor or coligand molecules.
  • the chemical moieties for derivitization may be selected from water soluble polymers such as polyethylene glycol, ethylene glycol/propylene glycol copolymers, carboxymethylcellulose, dextran, polyvinyl alcohol and the like.
  • the polypeptides may be modified at random positions within the molecule, or at predetermined positions within the molecule and may include one, two, three or more attached chemical moieties.
  • the polymer may be of any molecular weight, and may be branched or unbranched.
  • the preferred molecular weight is between about 1 kDa and about 100 kDa (the term "about” indicating that in preparations of polyethylene glycol, some molecules will weigh more, some less, than the stated molecular weight) for ease in handling and manufacturing.
  • Other sizes may be used, depending on the desired therapeutic profile (e.g., the duration of sustained release desired, the effects, if any on biological activity, the ease in handling, the degree or lack of antigenicity and other known effects of the polyethylene glycol to a therapeutic protein or analog).
  • the polyethylene glycol may have an average molecular weight of about 200, 500, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 5500, 6000, 6500, 7000, 7500, 8000, 8500, 9000, 9500, 10,000, 10,500, 11,000, 11,500, 12,000, 12,500, 13,000, 13,500, 14,000, 14,500, 15,000, 15,500, 16,000, 16,500, 17,000, 17,500, 18,000, 18,500, 19,000, 19,500, 20,000, 25,000, 30,000, 35,000, 40,000, 50,000, 55,000, 60,000, 65,000, 70,000, 75,000, 80,000, 85,000, 90,000, 95,000, or 100,000 kDa.
  • the polyethylene glycol may have a branched structure.
  • Branched polyethylene glycols are described, for example, in U.S. Patent No. 5,643,575; Morpurgo et al, Appl. Biochem. Biotechnol 56:59-12 (1996); Vorobjev et al, Nucleosides Nucleotides 18:2145-2150 (1999); and Caliceti et al., Bioconjug. Chem. i0:638-646 (1999), the disclosures of each of which are incorporated herein by reference.
  • the polyethylene glycol molecules should be attached to the protein with consideration of effects on functional or antigenic domains of the protein.
  • polyethylene glycol may be covalently bound through amino acid residues via a reactive group, such as, a free amino or carboxyl group.
  • Reactive groups are those to which an activated polyethylene glycol molecule may be bound.
  • the amino acid residues having a free amino group may include, for example, lysine residues and the N-terminal amino acid residues; those having a free carboxyl group may include aspartic acid residues, glutamic acid residues, and the C-terminal amino acid residue.
  • Sulfhydryl groups may also be used as a reactive group for attaching the polyethylene glycol molecules. Preferred for therapeutic purposes is attachment at an amino group, such as attachment at the N-terminus or lysine group.
  • polyethylene glycol may be attached to proteins via linkage to any of a number of amino acid residues.
  • polyethylene glycol can be linked to a proteins via covalent bonds to lysine, histidine, aspartic acid, glutamic acid, or cysteine residues.
  • One or more reaction chemistries may be employed to attach polyethylene glycol to specific amino acid residues (e.g., lysine, histidine, aspartic acid, glutamic acid, or cysteine) of the protein or to more than one type of amino acid residue (e.g., lysine, histidine, aspartic acid, glutamic acid, cysteine and combinations thereof) of the protein.
  • polyethylene glycol as an illustration, one may select from a variety of polyethylene glycol molecules (by molecular weight, branching, etc.), the proportion of polyethylene glycol molecules to protein (or peptide) molecules in the reaction mix, the type of pegylation reaction to be performed, and the method of obtaining the selected N-terminally pegylated protein.
  • the method of obtaining the N-terminally pegylated preparation i.e., separating this moiety from other monopegylated moieties if necessary
  • Selective proteins chemically modified at the N-terminus modification may be accomplished by reductive alkylation which exploits differential reactivity of different types of primary amino groups (lysine versus the N-terminal) available for derivatization in a particular protein. Under the appropriate reaction conditions, substantially selective derivatization of the protein at the N-terminus with a carbonyl group containing polymer is achieved.
  • pegylation of the proteins of the invention may be accomplished by any number of means.
  • polyethylene glycol may be attached to the protein either directly or by an intervening linker.
  • Linkerless systems for attaching polyethylene glycol to proteins are described in Delgado et al, Crit. Rev. Thera. Drug Carrier Sys. 9:249-304 (1992); Francis et al, Intern. I. ofHematol 68:1-18 (1998); U.S. Patent No. 4,002,531; U.S. Patent No. 5,349,052; WO 95/06058; and WO 98/32466, the disclosures of each of which are incorporated herein by reference.
  • One system for attaching polyethylene glycol directly to amino acid residues of proteins without an intervening linker employs tresylated MPEG, which is produced by the modification of monmethoxy polyethylene glycol (MPEG) using tresylchloride (ClSO 2 CH CF 3 ).
  • MPEG monmethoxy polyethylene glycol
  • ClSO 2 CH CF 3 tresylchloride
  • polyethylene glycol is directly attached to amine groups of the protein.
  • the invention includes protein- polyethylene glycol conjugates produced by reacting proteins of the invention with a polyethylene glycol molecule having a 2,2,2-trifluoreothane sulphonyl group.
  • Polyethylene glycol can also be attached to proteins using a number of different intervening linkers. For example, U.S.
  • Patent No. 5,612,460 discloses urethane linkers for connecting polyethylene glycol to proteins.
  • Protein-polyethylene glycol conjugates wherein the polyethylene glycol is attached to the protein by a linker can also be produced by reaction of proteins with compounds such as MPEG-succinimidylsuccinate, MPEG activated with l,l'-carbonyldiimidazole, MPEG-2,4,5-trichloropenylcarbonate, MPEG-p- nitrophenolcarbonate, and various MPEG-succinate derivatives.
  • polyethylene glycol derivatives and reaction chemistries for attaching polyethylene glycol to proteins are described in WO 98/32466, the entire disclosure of which is incorporated herein by reference.
  • Pegylated protein products produced using the reaction chemistries set out herein are included within the scope of the invention.
  • the number of polyethylene glycol moieties attached to each protein of the invention i.e., the degree of substitution
  • the pegylated proteins of the invention may be linked, on average, to 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 17, 20, or more polyethylene glycol molecules.
  • the average degree of substitution within ranges such as 1-3, 2-4, 3-5, 4-6, 5-7, 6-8, 7-9, 8-10, 9-11, 10-12, 11- 13, 12-14, 13-15, 14-16, 15-17, 16-18, 17-19, or 18-20 polyethylene glycol moieties per protein molecule.
  • Methods for determining the degree of substitution are discussed, for example, in Delgado et al, Crit. Rev. Thera. Drug Carrier Sys. 9:249-304 (1992).
  • the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides can be recovered and purified by known methods which include, but are not limited to, ammonium sulfate or ethanol precipitation, acid extraction, anion or cation exchange chromatography, phosphocellulose chromatography, hydrophobic interaction chromatography, affinity chromatography, hydroxylapatite chromatography and lectin chromatography. Most preferably, high performance liquid chromatography (“HPLC”) is employed for purification.
  • HPLC high performance liquid chromatography
  • the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the invention may be in monomers or multimers (i.e., dimers, trimers, tetramers and higher multimers). Accordingly, the present invention relates to monomers and multimers of the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the invention, their preparation, and compositions (preferably, pharmaceutical compositions) containing them.
  • the polypeptides of the invention are monomers, dimers, trimers or tetramers.
  • the multimers of the invention are at least dimers, at least trimers, or at least tetramers.
  • Multimers encompassed by the invention may be homomers or heteromers.
  • the term homomer refers to a multimer containing only Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the invention (including Neutrokine-alpha and/or Neutrokine-alphaSV fragments, variants, and fusion proteins, as described herein). These homomers may contain Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides having identical or different amino acid sequences.
  • a homomer of the invention is a multimer containing only Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides having an identical amino acid sequence.
  • a homomer of the invention is a multimer containing Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides having different amino acid sequences.
  • the multimer of the invention is a homodimer (e.g., containing Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides having identical or different amino acid sequences) or a homotrimer (e.g., containing Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides having identical or different amino acid sequences).
  • the multimer of the invention is a homotrimer.
  • the homomeric multimer of the invention is at least a homodimer, at least a homotrimer, or at least a homotetramer.
  • heteromer refers to a multimer containing heterologous polypeptides (i.e., polypeptides of a different protein) in addition to the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the invention.
  • the multimer of the invention is a heterodimer, a heterotrimer, or a heterotetramer.
  • the heteromeric multimer of the invention is at least a heterodimer, at least a heterotrimer, or at least a heterotetramer.
  • the heteromeric multimer of the invention is a heterotrimer comprising both Neutrokine alpha-polypeptides and APRIL polypeptides (e.g., SEQ ID NO:20 or SEQ ID NO:47; PCT International Publication Number WO97/33902; GenBank Accession No. AF046888 (nucleotide) and AAC6132 (protein); J. Exp. Med. 188(6): 1185-1190).
  • the heteromeric multimer of the invention is a heterotrimer consisting of one Neutrokine alpha-polypeptide and two APRIL polypeptides.
  • the heteromeric multimer of the invention is a heterotrimer consisting of two Neutrokine alpha-polypeptides and one APRIL polypeptide.
  • the heteromers of the invention contain CD40 ligand polypeptide sequence(s), or biologically active fragment(s) or variant(s) thereof.
  • Multimers of the invention may be the result of hydrophobic, hydrophilic, ionic and/or covalent associations and or may be indirectly linked, by for example, liposome formation.
  • multimers of the invention such as, for example, homodimers or homotrimers, are formed when polypeptides of the invention contact one another in solution.
  • heteromultimers of the invention such as, for example, heterotrimers or heterotetramers, are formed when polypeptides of the invention contact antibodies to the polypeptides of the invention (including antibodies to the heterologous polypeptide sequence in a fusion protein of the invention) in solution.
  • multimers of the invention are formed by covalent associations with and/or between the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the invention.
  • covalent associations may involve one or more amino acid residues contained in the polypeptide sequence (e.g., that recited in SEQ ED NO:2 or SEQ ED NO: 19, or contained in the polypeptide encoded by the clones deposited in connection with this application).
  • the covalent associations are cross-linking between cysteine residues located within the polypeptide sequences which interact in the native (i.e., naturally occurring) polypeptide.
  • the covalent associations are the consequence of chemical or recombinant manipulation.
  • covalent associations may involve one or more amino acid residues contained in the heterologous polypeptide sequence in a Neutrokine-alpha and/or Neutrokine-alphaSV fusion protein.
  • covalent associations are between the heterologous sequence contained in a fusion protein of the invention (see, e.g., US Patent Number 5,478,925).
  • the covalent associations are between the heterologous sequence contained in a Neutrokine-alpha-Fc and/or Neutrokine-alphaSV-Fc fusion protein of the invention (as described herein).
  • covalent associations of fusion proteins of the invention are between heterologous polypeptide sequence from another TNF family ligand/receptor member that is capable of forming covalently associated multimers, such as for example, oseteoprotegerin (see, e.g., International Publication No. WO 98/49305, the contents of which are herein inco ⁇ orated by reference in its entirety).
  • covalent associations of fusion proteins of the invention are between heterologous polypeptide sequence from CD40L, or a soluble fragment thereof.
  • two or more Neutrokine-alpha and/or Neutrokine-alpha polypeptides of the invention are joined through synthetic linkers (e.g., peptide, carbohydrate or soluble polymer linkers).
  • synthetic linkers e.g., peptide, carbohydrate or soluble polymer linkers. Examples include those peptide linkers described in U.S. Pat. No. 5,073,627 (hereby incorporated by reference). Proteins comprising multiple Neutrokine- alpha and/or Neutrokine-alphaSV polypeptides separated by peptide linkers may be produced using conventional recombinant DNA technology.
  • Another method for preparing multimer Neutrokine-alpha and/or Neutroldne- alphaSV polypeptides of the invention involves use of Neutrokine-alpha and/or Neutroldne-alphaSV polypeptides fused to a leucine zipper or isoleucine zipper polypeptide sequence.
  • Leucine zipper or isoleucine zipper domains are polypeptides that promote multimerization of the proteins in which they are found. Leucine zippers were originally identified in several DNA-binding proteins (Landschulz et al., Science 240:1759, (1988)), and have since been found in a variety of different proteins.
  • leucine zippers or isoleucine zippers are naturally occurring peptides and derivatives thereof that dimerize or trimerize.
  • leucine zipper domains suitable for producing soluble multimeric Neutrokine-alpha and/or Neutrokine-alphaSV proteins are those described in PCT application WO 94/10308, hereby inco ⁇ orated by reference.
  • Recombinant fusion proteins comprising a soluble Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide fused to a peptide that dimerizes or trimerizes in solution are expressed in suitable host cells, and the resulting soluble multimeric Neutrokine-alpha and/or Neutrokine-alphaSV is recovered from the culture supernatant using techniques known in the art.
  • trimeric Neutrokine-alpha and/or Neutrokine-alphaSV may offer the advantage of enhanced biological activity.
  • Preferred leucine zipper moieties are those that preferentially form trimers.
  • One example is a leucine zipper derived from lung surfactant protein D (SPD), as described in Hoppe et al. (FEBS Letters 344:191, (1994)) and in U.S. patent application Ser. No. 08/446,922, hereby inco ⁇ orated by reference.
  • Other peptides derived from naturally occurring trimeric proteins may be employed in preparing trimeric Neutrokine-alpha and/or Neutrokine-alphaSV.
  • proteins of the invention are associated by interactions between the Flag® polypeptide sequence contained in Flag®-Neutrokine alpha or Flag®- Neutrokine-alphaSV fusion proteins of the invention.
  • proteins of the invention are associated by interactions between the heterologous polypeptide sequence contained in Flag®-Neutrokine-alpha or Flag®-Neutrokine-alphaSV fusion proteins of the invention and anti-Flag® antibody.
  • the multimers of the invention may be generated using chemical techniques known in the art.
  • polypeptides desired to be contained in the multimers of the invention may be chemically cross-linked using linker molecules and linker molecule length optimization techniques known in the art (see, e.g., US Patent Number 5,478,925, which is herein inco ⁇ orated by reference in its entirety).
  • multimers of the invention may be generated using techniques known in the art to form one or more inter- molecule cross-links between the cysteine residues located within the sequence of the polypeptides desired to be contained in the multimer (see, e.g., US Patent Number 5,478,925, which is herein inco ⁇ orated by reference in its entirety).
  • polypeptides of the invention may be routinely modified by the addition of cysteine or biotin to the C terminus or N-terminus of the polypeptide and techniques known in the art may be applied to generate multimers containing one or more of these modified polypeptides (see, e.g., US Patent Number 5,478,925, which is herein inco ⁇ orated by reference in its entirety). Additionally, techniques known in the art may be applied to generate liposomes containing the polypeptide components desired to be contained in the multimer of the invention (see, e.g., US Patent Number 5,478,925, which is herein inco ⁇ orated by reference in its entirety).
  • multimers of the invention may be generated using genetic engineering techniques known in the art.
  • polypeptides contained in multimers of the invention are produced recombinantly using fusion protein technology described herein or otherwise known in the art (see, e.g., US Patent Number 5,478,925, which is herein inco ⁇ orated by reference in its entirety).
  • polynucleotides coding for a homodimer of the invention are generated by ligating a polynucleotide sequence encoding a polypeptide of the invention to a sequence encoding a linker polypeptide and then further to a synthetic polynucleotide encoding the translated product of the polypeptide in the reverse orientation from the original C-terminus to the N-terminus (lacking the leader sequence) (see, e.g., US Patent Number 5,478,925, which is herein inco ⁇ orated by reference in its entirety).
  • recombinant techniques described herein or otherwise known in the art are applied to generate recombinant polypeptides of the invention which contain a transmembrane domain and which can be inco ⁇ orated by membrane reconstitution techniques into liposomes (see, e.g., US Patent Number 5,478,925, which is herein inco ⁇ orated by reference in its entirety).
  • the invention provides an isolated Neutroldne-alpha polypeptide having the amino acid sequence encoded by the cDNA clone contained in ATCC No. 97768, or the amino acid sequence in Figures 1A and IB (SEQ ID NO:2), or a polypeptide comprising a portion (i.e., a fragment) of the above polypeptides.
  • the invention provides an isolated Neutrokine-alphaSV polypeptide having the amino acid encoded by the cDNA clone contained in ATCC No. 203518, or the amino acid sequence in Figures 5A and 5B (SEQ ED NO: 19), or a polypeptide comprising a portion (i.e, fragment) of the above polypeptides.
  • Polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ ED NO:2, encoded by the cDNA contained in the plasmid having ATCC accession number 97768, or encoded by nucleic acids which hybridize (e.g., under stringent hybridization conditions) to the nucleotide sequence contained in the deposited clone, or the complementary strand of the nucleotide sequence shown in Figures 1A-B (SEQ ED NO:l.
  • polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ ED NO: 19, encoded by the cDNA contained in the plasmid having ATCC accession number 203518, or encoded by nucleic acids which hybridize (e.g., under stringent hybridization conditions) to the nucleotide sequence contained in the deposited clone, or the complementary strand of the nucleotide sequence shown in Figures 5A-B (SEQ ED NO: 18).
  • polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence encoded by nucleic acids which hybridize (e.g., under hybridization conditions described herein) to the complementary strand of the nucleotide sequence shown in SEQ DD NO:21.
  • Polypeptide fragments of the present invention also include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ ED NO:23, or encoded by nucleic acids which hybridize (e.g., under hybridization conditions described herein) to the complementary strand of the nucleotide sequence shown in SEQ ID NO:22.
  • polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ ID NO:28, or encoded by nucleic acids which hybridize (e.g., under hybridization conditions described herein) to the complementary strand of the nucleotide sequence shown in SEQ ED NO:27.
  • polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ ID NO:30, or encoded by nucleic acids which hybridize (e.g., under hybridization conditions described herein) to the complementary strand of the nucleotide sequence shown in SEQ DD NO:29.
  • polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ ED NO:38, or encoded by nucleic acids which hybridize (e.g., under hybridization conditions described herein) to the complementary strand of the nucleotide sequence shown in SEQ ED NO:37.
  • polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ ED NO:39, or encoded by nucleic acids which hybridize (e.g., under hybridization conditions described herein) to the complementary strand of a nucleotide sequence encoding the polypeptide of SEQ ID NO:39.
  • polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ ED NO:40, or encoded by nucleic acids which hybridize (e.g., under hybridization conditions described herein) to the complementary strand of a nucleotide sequence encoding the polypeptide of SEQ DD NO:40.
  • polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ DD NO:41, or encoded by nucleic acids which hybridize (e.g., under hybridization conditions described herein) to the complementary strand of a nucleotide sequence encoding the polypeptide of SEQ DD NO:41.
  • polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ ED NO:42, or encoded by nucleic acids which hybridize (e.g., under hybridization conditions described herein) to the complementary strand of a nucleotide sequence encoding the polypeptide of SEQ ID NO:42.
  • polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ DD NO:43, or encoded by nucleic acids which hybridize (e.g., under hybridization conditions described herein) to the complementary strand of a nucleotide sequence encoding the polypeptide of SEQ DD NO:43.
  • polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ ED NO:44, or encoded by nucleic acids which hybridize (e.g., under hybridization conditions described herein) to the complementary strand of a nucleotide sequence encoding the polypeptide of SEQ ED NO:44.
  • Polypeptide fragments of the present invention include polypeptides comprising or alternatively, consisting of, an amino acid sequence contained in SEQ ED NO:2, encoded by the cDNA contained in the deposited clone, or encoded by nucleic acids which hybridize (e.g., under stringent hybridization conditions) to the nucleotide sequence contained in the deposited clone, or shown in Figures 1A and IB (SEQ DD NO:l) or the complementary strand thereto. Protein fragments may be "free-standing,” or comprised within a larger polypeptide of which the fragment forms a part or region, most preferably as a single continuous region.
  • polypeptide fragments of the invention include, for example, fragments that comprise or alternatively, consist of from about amino acid residues: 1 to 50, 51 to 100, 101 to 150, 151 to 200, 201 to 250, and or 251 to 285 of SEQ DD NO:2.
  • polypeptide fragments can be at least 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 175 or 200 amino acids in length.
  • polypeptide fragments of the invention comprise, or alternatively consist of, amino acid residues: 1-46, 31-44, 47-72, 73-285, 73-83, 94-102, 148-152, 166-181, 185-209, 210-221, 226-237, 244-249, 253-265, and/or 277-284, as depicted in Figures 1A and IB (SEQ ED NO:2). Polynucleotides encoding these polypeptides are also encompassed by the invention.
  • a partial, non-limiting and nonexclusive list of such residues of the Neutrokine-alpha polypeptide sequence which may be targeted for mutation includes the following amino acid residues of the Neutrokine-alpha polypeptide sequence as shown in SEQ DD NO:2: V-142; T-143; Q-144; D-145; C-146; L-147; Q-148; L-149; 1-150; A-151; D-152; S-153; E-154; T-155; P-156; T-157; 1-158; Q-159; and K-160.
  • Polynucleotides encoding Neutrokine-alpha polypeptides which have one or more mutations in the region from V-142 through K-160 of SEQ DD NO: 2 are contemplated. Polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • Polypeptide fragments may be "free-standing," or comprised within a larger polypeptide of which the fragment forms a part or region, most preferably as a single continuous region.
  • Representative examples of polypeptide fragments of the invention include, for example, fragments that comprise or alternatively, consist of from about amino acid residues: 1 to 15, 16-30, 31-46, 47-55, 56-72, 73-104, 105-163, 163-188, 186- 210 and 210-284 of the amino acid sequence disclosed in SEQ DD NO:2.
  • polypeptide fragments of the invention include, for example, fragments that comprise or alternatively, consist of from about amino acid residues: 1 to 143, 1-150, 47-143, 47-150, 73-143, 73-150, 100-150, 140-145, 142-148, 140-150, 140- 200, 140-225, and 140-266 of the amino acid sequence disclosed in SEQ DD NO: 19.
  • polypeptide fragments can be at least 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 175 or 200 amino acids in length.
  • Additional preferred embodiments encompass polypeptide fragments comprising, or alternatively consisting of, the predicted intracellular domain of Neutrokine-alpha (amino acid residues 1-46 of SEQ ED NO:2), the predicted transmembrane domain of Neutrokine-alpha (amino acid residues 47-72 of SEQ ED NO:2), the predicted extracellular domain of Neutroldne-alpha (amino acid residues 73-285 of SEQ ID NO:2), the predicted TNF conserved domain of Neutrokine-alpha (amino acids 191 to 284 of SEQ ID NO:2), and a polypeptide comprising, or alternatively, consisting of the predicted intracellular domain fused to the predicted extracellular domain of Neutrokine-alpha (amino acid residues 1-46 fused to amino acid residues 73-285 of SEQ ED NO:2). Polynucleotides encoding these polypeptides are also encompassed by the invention.
  • polypeptide fragments comprising, or alternatively consisting of, the predicted intracellular domain of Neutrokine-alphaSV (amino acid residues 1-46 of SEQ ED NO: 19), the predicted transmembrane domain of Neutrokine-alphaSV (amino acid residues 47-72 of SEQ ED NO: 19), the predicted extracellular domain of Neutrokine-alphaSV (amino acid residues 73-266 of SEQ LD NO: 19), the predicted TNF conserved domain of Neutrokine-alphaSV (amino acids 172 to 265 of SEQ ED NO: 19), and a polypeptide comprising, or alternatively, consisting of the predicted intracellular domain fused to the predicted extracellular domain of Neutrokine-alphaSV (amino acid residues 1-46 fused to amino acid residues 73-266 of SEQ ED NO: 19).
  • Polynucleotides encoding these polypeptides are also encompassed by the invention
  • polypeptide fragments comprising, or alternatively consisting of, the predicted beta-pleated sheet regions identified in Figures 7A-1 and 7A-2.
  • These polypeptide fragments of the invention comprise, or alternatively consist of, amino acid residues Gln-144 to Ala-151, Phe-172 to Lys-173, Ala-177 to Glu-179, Asn-183 to Ile-185, Gly-191 to Lys-204, His- 210 to Val-219, Leu-226 to Pro-237, Asn-242 to Ala-251, Gly-256 to Ile-263 and/or Val- 276 to Leu-284 of SEQ DD NO:2.
  • these polypeptide fragments of the invention also comprise, or alternatively consist of, amino acid residues Phe-153 to Lys-154, Ala-158 to Glu-160, Asn-164 to Ile-166, Gly-172 to Lys-185, His-191 to Val-200, Leu-207 to Pro-218, Asn-223 to Ala-232, Gly-237 to Ile- 244 and/or Val-257 to Leu-265 of SEQ ED NO: 19; and amino acid residues Phe-42 to Lys- 43, Ala-47 to Glu-49, Asn-53 to Ile-55, Gly-61 to Pro-74, His-80 to Val-89, Leu-96 to Pro-107, Asn-112 to Ala-121, Gly-126 to Ile-133 and/or Asp-146 to Leu-154 of SEQ DD NO:23.
  • these polypeptide fragments of the invention also comprise, or alternatively consist of, amino acid residues Gln-78 to Ala-85; Phe-106 to Lys-107, Ala-Ill to Glu-113, Asn- 117 to Ile-119, Gly-125 to Lys-138, His- 144 to Val-153, Leu-160 to Pro-171, Asn-176 to Ala-185, Gly-190 to Ile-197 and/or Val- 210 to Leu-218 of SEQ DD NO:28; and amino acid residues Gln-78 to Ala-85; Phe-106 to Lys-107, Ala-Ill to Glu-113, Asn-117 to Ile-119, Gly-125 to Lys-138, His-144 to Val- 153, Leu-160 to Pro-171, Asn-176 to Ala-185, Gly-190 to Ile-197 and/or Val-210 to Leu- 218 of SEQ ID NO:30.
  • a partial, non-limiting, and exemplary list of polypeptides of the invention which comprise, or alternatively consist of, combinations of amino acid sequences of the invention includes, for example, [Met-1 to Lys-113] fused to [Leu-114 to Thr-141] fused to [Val-142 to Lys-160] fused to [Gly-161 to Gln-198] fused to [Val-199 to Ala-248] fused to [Gly-249 to Leu-285] of SEQ ED NO:2; or [Met-1 to Lys-113] fused to [Val-142 to Lys-160] fused to [Gly-161 to Gln-198] fused to [Val-199 to Ala-248] fused to [Gly- 249 to Leu-285] of SEQ ID NO:2; or [Met-1 to Lys-113] fused to [Leu-114 to Thr-141] fused to [Val-142 to Lys-160] fused to [Gly-161 to Gl
  • polypeptide fragments in an order other than that recited above (e.g., [Leu-114 to Thr-141] fused to [Val-199 to Ala- 248] fused to [Gly-249 to Leu-285] fused to [Val-142 to Lys-160] of SEQ DD NO:2).
  • heterologous polypeptide fragments as described herein and/or other polypeptides or polypeptide fragments of the present invention e.g., [Met-1 to Lys-113] fused to [Leu-114 to Thr-141] fused to [Val-142 to Lys-160] fused to [Gly-161 to Gln-198] fused to [Gly-249 to Leu-285] of SEQ DD NO:2 fused to a FLAG tag; or [Met-1 to Lys-113] of SEQ DD NO:2 fused to [Leu-114 to Thr-141] of SEQ DD NO:2 fused to [Glu-135 to Asn-165] of SEQ DD NO:39 fused to [Val-142 to Lys-160] of SEQ DD NO:2 fused to [Gly-161 to Gln-198] of SEQ DD NO:2 fused to [Val-199 to Ala- 248] of SEQ DD NO:2 fused to [G
  • polypeptides of the invention which comprise, or alternatively consist of, combinations of amino acid sequences includes, for example, [Met-1 to Lys-113] fused to [Leu-114 to Thr*rl41] fused to [Gly-142 to Gln-179] fused to [Val-180 to Ala-229] fused to [Gly-230 to Leu-266] of SEQ DD NO:19; [Met-1 to Lys-113] fused to [Gly-142 to Gln-179] fused to [Val-180 to Ala-229] fused to [Gly-230 to Leu-266] of SEQ ID NO: 19; or [Met-1 to Lys-113] fused to [Leu-114 to Thr-141] fused to [Gly-142 to Gln-179] fused to [Gly-230 to Leu-2
  • polypeptide fragments in an order other than that recited above (e.g., [Leu-114 to Thr-141] fused to [Val-180 to Ala-229] fused to [Gly-230 to Leu-266] fused to [Gly-142 to Gln-179] of SEQ ID NO: 19).
  • heterologous polypeptide fragments as described herein and/or other polypeptides or polypeptide fragments of the present invention e.g., [Met-1 to Lys-113] fused to [Leu-114 to Thr-141] fused to [Gly-142 to Gln-179] fused to [Gly- 230 to Leu-266] of SEQ DD NO: 19 fused to a FLAG tag or , [Met-1 to Lys-113] of SEQ ED NO: 19 fused to [Leu-114 to Thr-141] of SEQ DD NO: 19 fused to [Glu-135 to Asn-165] of SEQ DD NO:39 fused to [Gly-142 to Gln-179] of SEQ ID NO: 19 fused to [Val-180 to Ala-229] of SEQ DD NO: 19 fused to [Gly-230 to Leu-266] of SEQ DD NO: 19).
  • a further partial, non-limiting, and exemplary list of polypeptides of the invention which comprise, or alternatively consist of, combinations of amino acid sequences includes, for example, [Met-1 to Lys- 106] fused to [Leu- 107 to Thr- 134] fused to [Ile-166 to Lys-184] fused to [Gly-185 to Gln-222] fused to [Val-223 to Ala-272] fused to [Gly-273 to Leu-309] of SEQ ID NO:39; [Met-1 to Lys-106] fused to [Glu-135 to Asn- 165] fused to [Ile-166 to Lys-184] fused to [Gly-185 to Gln-222] fused to [Val-223 to Ala- 272] fused to [Gly-273 to Leu-309] of SEQ DD NO:39; or [Met-1 to Lys
  • polypeptide fragments in an order other than that recited above (e.g., [Met-1 to Lys-106] fused to [Gly-185 to Gln-222] fused to [Ile-166 to Lys- 184] fused to [Val-223 to Ala-272] fused to [Leu-107 to Thr-134] fused to [Gly-273 to Leu-309] of SEQ DD NO:39).
  • heterologous polypeptide fragments as described herein and/or other polypeptides or polypeptide fragments of the present invention (e.g., [Met-1 to Lys-106] fused to [Glu-135 to Asn-165] fused to [Ile-166 to Lys-184] fused to [Gly-185 to Gln-222] fused to [Val-223 to Ala-272] fused to [Gly-273 to Leu-309] of SEQ ED NO:39 fused to a FLAG tag).
  • Polynucleotides encoding any of these polypeptides are encompassed by the invention.
  • a further partial, non-limiting, and exemplary list of polypeptides of the invention which comprise, or alternatively consist of, combinations of amino acid sequences includes, for example, [Met-1 to Lys-106] fused to [Leu-107 to Thr-134] fused to [Glu-135 to Asn-165] fused to [Ile-166 to Pro-180] fused to [Ala-181 to Gln-202] fused to [Val-203 to Ala-252] fused to [Gly-253 to Leu-289] of SEQ DD NO:38; [Met-1 to Lys- 106] fused to [Leu-107 to Thr-134] fused to [Ile-166 to PrO-180] fused to [Ala-181 to Gln- 202] fused to [Val-203 to Ala-252] fused to [Gly-253 to Leu-289] of SEQ DD NO:38; [Met-1 to Lys-106] fused to [Leu-107 to Thr-134] fuse
  • heterologous polypeptide fragments as described herein and/or other polypeptides or polypeptide fragments of the present invention (e.g., [Met-1 to Lys-106] fused to [Glu-135 to Asn-165] fused to [Ile-166 to Pro-180] fused to [Ala-181 to Gln-202] fused to [Val-203 to Ala-252] fused to [Gly-253 to Leu-289] of SEQ DD NO:38 fused to a FLAG tag).
  • Polynucleotides encoding any of these polypeptides are encompassed by the invention.
  • a further partial, non-limiting, and exemplary list of polypeptides of the invention which comprise, or alternatively consist of, combinations of amino acid sequences includes, for example, [Met-1 to Lys-106] fused to [Leu-107 to Thr-134] fused to [Glu-135 to Asn-165] fused to [Arg-166 to Gln-203] fused to [Val-204 to Ala-253] fused to [Gly-254 to Leu-290] of SEQ ED NO:40; [Met-1 to Lys-106] fused [Glu-135 to Asn-165] fused to [Arg-166 to Gln-203] fused to [Val-204 to Ala-253] fused to [Gly-254 to Leu-290] of SEQ ED NO:40; [Met-1 to Lys-106] fused to [Leu-107 to Thr-134] fused to [Arg-166 to Gln-203] fused to [Val-204 to Ala-253] fused to [Val-204
  • polypeptide fragments in an order other than that recited above (e.g., [Met-1 to Lys-106] fused to [Arg-166 to Gln-203] fused to [Val-204 to Ala-253] fused to [Leu-107 to Thr-134] fused to [Gly-254 to Leu-290] of SEQ DD NO:40).
  • heterologous polypeptide fragments as described herein and/or other polypeptides or polypeptide fragments of the present invention (e.g., [Met-1 to Lys-106] fused to [Glu-135 to Asn-165] fused to [Arg-166 to to Gln-202] fused to [Val-204 to Ala-253] fused to [Gly-254 to Leu-290] of SEQ DD NO:38 fused to a FLAG tag).
  • Polynucleotides encoding any of these polypeptides are encompassed by the invention.
  • a further partial, non-limiting, and exemplary list of polypeptides of the invention which comprise, or alternatively consist of, combinations of amino acid sequences includes, for example, [Tyr-1 to Lys-47] fused to [Leu-48 to Thr-75] fused to [Val-76 to Lys-94] fused to [Gly-95 to Gln-132] fused to [Val-133 to Ala-182] fused to [Gly-183 to Leu-219] of SEQ ID NO:28;.
  • polypeptide fragments in an order other than that recited above (e.g., [Tyr-1 to Lys-47] fused to [Gly-183 to Leu- 219] fused to [Val-133 to Ala-182] fused to [Leu-48 to Thr-75] of SEQ DD NO:28).
  • heterologous polypeptide fragments as described herein and/or other polypeptides or polypeptide fragments of the present invention (e.g., [Leu-48 to Thr-75] fused to [Val-76 to Lys-94] fused to [Gly-95 to Gln-132] fused to [Val-133 to Ala-182] of SEQ ED NO:28 fused to an Fc receptor tag).
  • polypeptide fragments e.g., [Leu-48 to Thr-75] fused to [Val-76 to Lys-94] fused to [Gly-95 to Gln-132] fused to [Val-133 to Ala-182] of SEQ ED NO:28 fused to an Fc receptor tag.
  • a further partial, non-limiting, and exemplary list of polypeptides of the invention which comprise, or alternatively consist of, combinations of amino acid sequences includes, for example, [Tyr-1 to Lys-47] fused to [Leu-48 to Thr-75] fused to [Val-76 to Lys-94] fused to [Gly-95 to Gln-132] fused to [Val-133 to Ala-182] fused to [Gly-183 to Leu-219] of SEQ DD NO:30; [Tyr-1 to Lys-47] fused to [Leu-48 to Thr-75] fused to [Val-76 to Lys-94] fused to [Val-133 to Ala-182] of SEQ DD NO:30; or [Tyr-1 to Lys-47] fused to [Val-76 to Lys-94] fused to [Val-133 to Ala-182] fused to [Gly-183 to Leu-219] of SEQ DD NO:30.
  • polypeptide fragments in an order other than that recited above (e.g., [Tyr-1 to Lys-47] fused to [Gly-183 to Leu- 219] fused to [Val-133 to Ala-182] fused to [Leu-48 to Thr-75] of SEQ ID NO:30).
  • heterologous polypeptide fragments as described herein and/or other polypeptides or polypeptide fragments of the present invention (e.g., [Leu-48 to Thr-75] fused to [Val-76 to Lys-94] fused to [Gly-95 to Gln-132] fused to [Val-133 to Ala-182] of SEQ ED NO: 30 fused to an Fc receptor tag).
  • polypeptide fragments e.g., [Leu-48 to Thr-75] fused to [Val-76 to Lys-94] fused to [Gly-95 to Gln-132] fused to [Val-133 to Ala-182] of SEQ ED NO: 30 fused to an Fc receptor tag.
  • a further partial, non-limiting, and exemplary list . of polypeptides . of the invention which comprise, or alternatively consist of, combinations of amino acid sequences includes, for example, [Ala-1 to Thr-8] fused to [Val-9 to Lys-27] fused to [Gly-28 to Gln-65] fused to [Val-66 to Ala-115] fused to [Gly-116 to Leu-152] of SEQ DD NO:41; [Ala-1 to Thr-8] fused to [Gly-28 to Gln-65] fused to [Val-66 to Ala-115] fused to [Gly-116 to Leu-152] of SEQ ED NO:41; [Ala-1 to Thr-8] fused to [Val-9 to Lys-27] fused to [Gly-28 to Gln-65] fused to [Gly-116 to Leu-152] of SEQ ED NO:41; Other combinations may include the polypeptide fragments in an order other than that
  • heterologous polypeptide fragments as described herein and/or other polypeptides or polypeptide fragments of the present invention (e.g., [Ala-1 to Thr-8] fused to [Val-9 to Lys-27] fused to [Gly-28 to Gln-65] fused to [Val-66 to Ala-115] fused to [Gly-116 to Leu-152] of SEQ ED NO:41 fused to an Fc receptor tag).
  • Polynucleotides encoding any of these polypeptides are encompassed by the invention.
  • a further partial, non-limiting, and exemplary list of polypeptides of the invention which comprise, or alternatively consist of, combinations of amino acid sequences includes, for example, [Ala-1 to Thr-8] fused to [Glu-9 to Thr-40] fused to [Arg-41 to Gln-78] fused to [Val-79 to Ala-128] fused to [Gly-129 to Leu-165] of SEQ ID NO:42; [Ala-1 to Thr-8] fused to [Arg-41 to Gln-78] fused to [Val-79 to Ala-128] fused to [Gly-129 to Leu-165] of SEQ DD NO:42; [Ala-1 to Thr-8] fused to [Glu-9 to Thr-40] fused to [Arg-41 to Gln-78] fused to [Gly-129 to Leu-165] of SEQ DD NO:4.
  • polypeptide fragments in an order other than that recited above (e.g[Ala-l to Thr-8] fused to [Gly-129 to Leu-165] fused to [Val-79 to Ala-128] fused to [Arg-41 to Gln-78] fused to [Glu-9 to Thr-40] of SEQ ID NO:42).
  • heterologous polypeptide fragments as described herein and/or other polypeptides or polypeptide fragments of the present invention (e.g., [Ala-1 to Thr-8] fused to [Glu-9 to Thr-40] fused to [Arg-41 to Gln-78] fused to [Val-79 to Ala- 128] fused to [Gly-129 to Leu-165] of SEQ ID NO:42 fused to an Fc receptor tag).
  • Polynucleotides encoding any of these polypeptides are encompassed by the invention.
  • a further partial, non-limiting, and exemplary list of polypeptides of the invention which comprise, or alternatively consist of, combinations of amino acid sequences includes, for example, [Ala-1 to Thr-8] fused to [Glu-9 to Thr-40] fused to [II e- 41 to Lys-59] fused to [Gly-60 to Gln-97] fused to [Val-98 to Ala-147] fused to [Gly-148 to Leu-184] of SEQ ID NO:43; [Ala-1 to Thr-8] fused [Gly-60 to Gln-97] fused to [Gly- 148 to Leu-184] of SEQ DD NO:43; [Ala-1 to Thr-8] fused to [Glu-9 to Thr-40] fused to [Gly-60 to Gln-97] fused to [Val-98 to Ala-147] fused to [Gly-148 to Leu-184] of SEQ DD NO:43; [Ala-1 to Thr-8] fused to [
  • heterologous polypeptide fragments as described herein and/or other polypeptides or polypeptide fragments of the present invention (e.g., [Ala-1 to Thr-8] fused to [Glu-9 to Thr-40] fused to [Ile-41 to Lys-59] fused to [Val-98 to Ala-147] fused to [Gly-148 to Leu- 184] of SEQ DD NO: 43 fused to an Fc receptor tag).
  • polypeptide fragments as described herein and/or other polypeptides or polypeptide fragments of the present invention (e.g., [Ala-1 to Thr-8] fused to [Glu-9 to Thr-40] fused to [Ile-41 to Lys-59] fused to [Val-98 to Ala-147] fused to [Gly-148 to Leu- 184] of SEQ DD NO: 43 fused to an Fc receptor tag).
  • Polynucleotides encoding any of these polypeptides are encompassed by the
  • Additional embodiments of the invention encompass Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide fragments comprising, or alternatively consisting of, functional regions of polypeptides of the invention, such as the Garnier-Robson alpha-regions, beta-regions, turn-regions, and coil-regions, Chou-Fasman alpha-regions, beta-regions, and coil-regions, Kyte-Doolittle hydrophilic regions and hydrophobic regions, Eisenberg alpha- and beta-amphipathic regions, Ka ⁇ lus-Schulz flexible regions, Emini surface-forming regions and Jameson- Wolf regions of high antigenic index set out in Figures 3 and 6 and in Table I and as described herein.
  • functional regions of polypeptides of the invention such as the Garnier-Robson alpha-regions, beta-regions, turn-regions, and coil-regions, Chou-Fasman alpha-regions, beta-regions, and coil-regions, Kyte-Do
  • the polypeptide fragments of the invention are antigenic.
  • the data presented in columns VIII, IX, XIII, and XIV of Table I can be used to routinely determine regions of Neutrokine-alpha which exhibit a high degree of potential for antigenicity. Regions of high antigenicity are determined from the data presented in columns VIII, IX, XIII, and/or IV by choosing values which represent regions of the polypeptide which are likely to be exposed on the surface of the polypeptide in an environment in which antigen recognition may occur in the process of initiation of an immune response.
  • fragments of the invention are those that comprise regions of Neutrokine-alpha and/or Neutrokine-alphaSV that combine several structural features, such as several (e.g., 1, 2, 3 or 4) of the features set out above.
  • Polynucleotides encoding these polypeptides are also encompassed by the invention.
  • the invention provides a polypeptide comprising, or alternatively consisting of, an epitope-bearing portion of a polypeptide of the invention.
  • Polynucleotides encoding these polypeptides are also encompassed by the invention.
  • the epitope of this polypeptide portion is an immunogenic or antigenic epitope of a polypeptide of the invention.
  • An "immunogenic epitope" is defined as a part of a protein that elicits an antibody response when the whole protein is the immunogen.
  • an antigenic epitope a region of a protein molecule to which an antibody can bind is defined as an "antigenic epitope.”
  • the number of immunogenic epitopes of a protein generally is less than the number of antigenic epitopes. See, for instance, Geysen et al, Proc. Natl. Acad. Sci. USA 81:3998- 4002 (1983).
  • polypeptides bearing an antigenic epitope i.e., that contain a region of a protein molecule to which an antibody can bind
  • relatively short synthetic peptides that mimic part of a protein sequence are routinely capable of eliciting an antiserum that reacts with the partially mimicked protein. See, for instance, Sutcliffe, J. G., Shinnick, T. M., Green, N. and Learner, R. A. (1983) "Antibodies that react with predetermined sites on proteins", Science, 219:660-666.
  • Peptides capable of eliciting protein-reactive sera are frequently represented in the primary sequence of a protein, can be characterized by a set of simple chemical rules, and are confined neither to immunodominant regions of intact proteins (i.e., immunogenic epitopes) nor to the amino or carboxyl terminals.
  • Antigenic epitope-bearing peptides and polypeptides of the invention are therefore useful to raise antibodies, including monoclonal antibodies, that bind specifically to a polypeptide of the invention. See, for instance, Wilson et al, Cell 37:161-118 (1984) at 777.
  • Antigenic epitope-bearing peptides and polypeptides of the invention preferably contain a sequence of at least 4, at least 5, at least 6, at least 7, more preferably at least 8, at least 9, at least 10, at least 11, at least 12, at least 13, at least 14, at least 15, at least 20, at least 25, at least 30, at least 40, at least 50, and, most preferably, between about 15 to about 30 amino acids contained within the amino acid sequence of a polypeptide of the invention.
  • Preferred polypeptides comprising immunogenic or antigenic epitopes are at least 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, or 100 amino acid residues in length. Additional non-exclusive preferred antigenic epitopes include the antigenic epitopes disclosed herein, as well as portions thereof.
  • Non-limiting examples of antigenic polypeptides or peptides that can be used to generate Neutrokine-alpha- and/or Neutrokine-alphaSV-specific antibodies include: a polypeptide comprising, or alternatively consisting of, amino acid residues from about Phe-115 to about Leu-147 in Figures 1A and IB (SEQ ED NO:2); a polypeptide comprising, or alternatively consisting of, amino acid residues from about Ile-150 to about Tyr-163 in Figures 1A and IB (SEQ DD NO:2); a polypeptide comprising, or alternatively consisting of, amino acid residues from about Ser-171 to about Phe-194 in Figures 1A and IB (SEQ ED NO:2); a polypeptide comprising, or alternatively consisting of, amino acid residues from about Glu-223 to about Tyr-246 in Figures 1A and IB (SEQ DD NO:2); and a polypeptide comprising, or alternatively consisting of, amino
  • Non-limiting examples of antigenic polypeptides or peptides that can be used to generate Neutrokine-alpha- and/or Neutrokine-alphaSV-specific antibodies include: a polypeptide comprising, or alternatively consisting of, amino acid residues from about Pro-32 to about Leu-47 in Figures 5A and 5B (SEQ ED NO: 19); a polypeptide comprising, or alternatively consisting of, amino acid residues from about Glu-116 to about Ser-143 in Figures 5 A and 5B (SEQ ID NO: 19); a polypeptide comprising, or alternatively consisting of, amino acid residues from about Phe-153 to about Tyr-173 in Figures 5A and 5B (SEQ ID NO: 19); a polypeptide comprising, or alternatively consisting of, amino acid residues from about Pro-218 to about Tyr-227 in Figures 5 A and 5B (SEQ DD NO: 19); a polypeptide comprising, or alternatively consisting of, amino acid residue
  • the epitope-bearing peptides and polypeptides of the invention may be produced by any conventional means. See, e.g., Houghten, R. A. (1985) General method for the rapid solid-phase synthesis of large numbers of peptides: specificity of antigen-antibody interaction at the level of individual amino acids. Proc. Natl. Acad. Sci. USA ⁇ 2:5131-5135; this "Simultaneous Multiple Peptide Synthesis (SMPS)" process is further described in U. S. Patent No. 4,631,211 to Houghten et al. (1986).
  • SMPS Simultaneous Multiple Peptide Synthesis
  • Epitope-bearing peptides and polypeptides of the invention have uses that include, but are not limited to, to induce antibodies according to methods well known in the art. See, for instance, Sutcliffe et al., supra; Wilson et al., supra; Chow, M. et al., Proc. Natl. Acad. Sci. USA 82:910-914; and Bittle, F. J. et al, I. Gen. Virol. 66:2347-2354 (1985).
  • Immunogenic epitope-bearing peptides of the invention i.e., those parts of a protein that elicit an antibody response when the whole protein is the immunogen, are identified according to methods known in the art.
  • U.S. Patent No. 5,194,392 to Geysen (1990) describes a general method of detecting or determining the sequence of monomers (amino acids or other compounds) which is a topological equivalent of the epitope (i.e., a "mimotope") which is complementary to a particular paratope (antigen binding site) of an antibody of interest. More generally, U.S. Patent No. 4,433,092 to Geysen (1989) describes a method of detecting or determining a sequence of monomers which is a topographical equivalent of a ligand which is complementary to the ligand binding site of a particular receptor of interest. Similarly, U.S.
  • Patent No. 5,480,971 to Houghten, R. A. et al. (1996) on Peralkylated Oligopeptide Mixtures discloses linear Cl-C7-alkyl peralkylated oligopeptides and sets and libraries of such peptides, as well as methods for using such oligopeptide sets and libraries for determining the sequence of a peralkylated oligopeptide that preferentially binds to an acceptor molecule of interest.
  • non-peptide analogs of the epitope-bearing peptides of the invention also can be made routinely by these methods.
  • the present invention encompasses polypeptides comprising, or alternatively consisting of, an epitope of the polypeptide having an amino acid sequence of SEQ DD NO:2, or an epitope of the polypeptide sequence encoded by a polynucleotide sequence contained in ATCC deposit No. 97768, or encoded by a polynucleotide that hybridizes to the complement of the sequence of SEQ ID NO:l or the cDNA sequence contained in ATCC deposit No. 97768 (e.g., under hybridization conditions described herein).
  • the present invention further encompasses polynucleotide sequences comprising, or alternatively consisting of, a sequence encoding an epitope of a polypeptide sequence of the invention (such as, for example, the sequence disclosed in SEQ ED NO:l), polynucleotide sequences of the complementary strand of a polynucleotide sequence encoding an epitope of the invention, and polynucleotide sequences which hybridize to the complementary strand (e.g., under hybridization conditions described herein).
  • the present invention also encompasses polypeptides comprising, or.
  • the present invention further encompasses polynucleotide sequences comprising, or alternatively consisting of, a sequence encoding an epitope of a polypeptide sequence of the invention (such as, for example, the sequence disclosed in SEQ ED NO: 18), polynucleotide sequences of the complementary strand of a polynucleotide sequence encoding an epitope of the invention, and polynucleotide sequences which hybridize to the complementary strand (e.g., under hybridization conditions described herein).
  • epitope of a polypeptide sequence of the invention such as, for example, the sequence disclosed in SEQ ED NO: 18
  • polynucleotide sequences of the complementary strand of a polynucleotide sequence encoding an epitope of the invention and polynucleotide sequences which hybridize to the complementary strand (e.g., under hybridization conditions described herein).
  • epitope of a polypeptide sequence of the invention such as, for example
  • the present invention encompasses a polypeptide comprising an epitope, as well as the polynucleotide encoding this polypeptide.
  • An "immunogenic epitope,” as used herein, is defined as a portion of a protein that elicits an antibody response in an animal, as determined by any method known in the art, for example, by the methods for generating antibodies described infra. (See, for example, Geysen et al., Proc. Natl. Acad. Sci. USA 81:3998- 4002 (1983)).
  • antigenic epitope is defined as a portion of a protein to which an antibody can immunospecifically bind its antigen as determined by any method well known in the art, for example, by the immunoassays described herein. Immunospecific binding excludes non-specific binding but does not necessarily exclude cross- reactivity with other antigens. Antigenic epitopes need not necessarily be immunogenic. [0266] Fragments which function as epitopes may be produced by any conventional means. (See, e.g., Houghten, Proc. Natl. Acad. Sci. USA 82:5131-5135 (19.85), further described in U.S. Patent No. 4,631,211).
  • antigenic epitopes preferably contain a sequence of at least 4, at least 5, at least 6, at least 7, more preferably at least 8, at least 9, at least 10, at least 11, at least 12, at least 13, at least 14, at least 15, at least 20, at least 25, at least 30, at least 40, at least 50, and, most preferably, between about 15 to about 30 amino acids.
  • Preferred polypeptides comprising immunogenic or antigenic epitopes are at least 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, or 100 amino acid residues in length.
  • Additional non-exclusive preferred antigenic epitopes include the antigenic epitopes disclosed herein, as well as portions thereof.
  • Antigenic epitopes are useful, for example, to raise antibodies, including monoclonal antibodies, that specifically bind the epitope.
  • Preferred antigenic epitopes include the antigenic epitopes disclosed herein, as well as any combination of two, three, four, five or more of these antigenic epitopes.
  • Antigenic epitopes can be used as the target molecules in immunoassays. (See, for instance, Wilson et al., Cell 37:767-778 (1984); Sutcliffe et al, Science 219:660-666 (1983)).
  • immunogenic epitopes can be used, for example, to induce antibodies according to methods well known in the art. (See, for instance, Sutcliffe et al., supra; Wilson et al., supra; Chow et al., Proc. Natl. Acad. Sci. USA 82:910-914; and Bittle et al., J. Gen. Virol. 66:2347-2354 (1985).
  • Preferred immunogenic epitopes include the immunogenic epitopes disclosed herein, as well as any combination of two, three, four, five or more of these immunogenic epitopes.
  • the polypeptides comprising one or more immunogenic epitopes may be presented for eliciting an antibody response together with a carrier protein, such as an albumin, to an animal system (such as rabbit or mouse), or, if the polypeptide is of sufficient length (at least about 25 amino acids), the polypeptide may be presented without a carrier.
  • a carrier protein such as an albumin
  • immunogenic epitopes comprising as few as 8 to 10 amino acids have been shown to be sufficient to raise antibodies capable of binding to, at the very least, linear epitopes in a denatured polypeptide (e.g., in Western blotting).
  • Epitope-bearing polypeptides of the present invention may be used to induce antibodies according to methods well known in the art including, but not limited to, in vivo immunization, in vitro immunization, and phage display methods. See, e.g., Sutcliffe et al., supra; Wilson et al., supra, and Bittle et al., J. Gen. Virol., 66:2347-2354 (1985).
  • animals may be immunized with free peptide; however, anti- peptide antibody titer may be boosted by coupling the peptide to a macromolecular carrier, such as keyhole limpet hemacyanin (KLH) or tetanus toxoid.
  • KLH keyhole limpet hemacyanin
  • peptides containing cysteine residues may be coupled to a carrier using a linker such as maleimidobenzoyl-N-hydroxysuccinimide ester (MBS), while 'other peptides may be coupled to carriers using a more general linking agent such as glutaraldehyde.
  • Animals such as rabbits, rats and mice are immunized with either free or carrier-coupled peptides, for instance, by intraperitoneal and/or intradermal injection of emulsions containing about 100 micrograms of peptide or carrier protein and Freund's adjuvant or any other adjuvant known for stimulating an immune response.
  • booster injections may be needed, for instance, at intervals of about two weeks, to provide a useful titer of anti-peptide antibody which can be detected, for example, by ELISA assay using free peptide adsorbed to a solid surface.
  • the titer of anti-peptide antibodies in serum from an immunized animal may be increased by selection of anti-peptide antibodies, for instance, by adso ⁇ tion to the peptide on a solid support and elution of the selected antibodies according to methods well known in the art.
  • polypeptides of the present invention comprising an immunogenic or antigenic epitope can be fused to other polypeptide sequences.
  • the polypeptides of the present invention may be fused with the constant domain of immunoglobulins (IgA, IgE, IgG, IgM), or portions thereof (CHI, CH2, CH3, or any combination thereof and portions thereof), or albumin (including but not limited to recombinant human albumin or fragments or variants thereof (see, e.g., U.S. Patent No. 5,876,969, issued March 2, 1999, EP Patent 0 413 622, and U.S. Patent No.
  • antigens e.g., insulin
  • FcRn binding partner such as IgG or Fc fragments
  • IgG Fusion proteins that have a disulfide-linked dimeric structure due to the IgG portion desulfide bonds have also been found to be more efficient in binding and neutralizing other molecules than monomeric polypeptides or fragments thereof alone. See, e.g., Fountoulakis et al, J. Biochem., 270:3958-3964 (1995).
  • Nucleic acids encoding the above epitopes can also be recombined with a gene of interest as an epitope tag (e.g., the hemagglutinin ("HA") tag or flag tag) to aid in detection and purification of the expressed polypeptide.
  • an epitope tag e.g., the hemagglutinin ("HA") tag or flag tag
  • HA hemagglutinin
  • a system described by Janknecht et al. allows for the ready purification of non-denatured fusion proteins expressed in human cell lines (Janknecht et al., 1991, Proc. Natl. Acad. Sci. USA 88:8972- 897).
  • the gene of interest is subcloned into a vaccinia recombination plasmid such that the open reading frame of the gene is translationally fused to an amino-terminal tag consisting of six histidine residues.
  • the tag serves as a matrix-binding domain for the fusion protein. Extracts from cells infected with the recombinant vaccinia virus are loaded onto Ni 2+ nitriloacetic acid-agarose column and histidine-tagged proteins can be selectively eluted with imidazole-containing buffers.
  • the Neutrokine-alpha and or Neutrokine-alphaSV polypeptides of the present invention and the epitope-bearing fragments thereof are fused with a heterologous antigen (e.g., polypeptide, carbohydrate, phospholipid, or nucleic acid).
  • a heterologous antigen e.g., polypeptide, carbohydrate, phospholipid, or nucleic acid.
  • the heterologous antigen is an immunogen.
  • the heterologous antigen is the gpl20 protein of HIV, or a fragment thereof. Polynucleotides encoding these polypeptides are also encompassed by the invention.
  • the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the present invention and the epitope-bearing fragments thereof are fused with polypeptide sequences of another TNF ligand family member (or biologically active fragments or variants thereof).
  • the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the present invention are fused with a CD40L polypeptide sequence.
  • the CD40L polypeptide sequence is soluble.
  • DNA shuffling The techniques of gene-shuffling, motif-shuffling, exon-shuffling, and/or codon-shuffling (collectively referred to as "DNA shuffling") may be employed to modulate the activities of Neutrokine-alpha and/or Neutrokine-alphaSV thereby effectively generating agonists and antagonists of Neutrokine-alpha and/or Neutrokine- alphaSV. See generally, U.S. Patent Nos. 5,605,793, 5,811,238, 5,830,721, 5,834,252, and 5,837,458, and Patten, P. A., et al, Curr. Opinion Biotechnol.
  • alteration of Neutrokine-alpha and/or Neutrokine-alphaSV polynucleotides and corresponding polypeptides may be achieved by DNA shuffling.
  • DNA shuffling involves the assembly of two or more DNA segments into a desired Neutrokine-alpha and or Neutrokine-alphaSV molecule by homologous, or site-specific, recombination.
  • Neutrokine-alpha and/or Neutrokine-alphaSV polynucleotides and corresponding polypeptides may be altered by being subjected to random mutagenesis by error-prone PCR, random nucleotide insertion or other methods prior to recombination.
  • one or more components, motifs, sections, parts, domains, fragments, etc., of Neutrokine-alpha and/or Neutrokine-alphaSV may be recombined with one or more components, motifs, sections, parts, domains, fragments, etc. of one or more heterologous molecules.
  • the heterologous molecules are, for example, TNF-alpha, lymphotoxin-alpha (LT-alpha, also known as TNF-beta), LT-beta (found in complex heterotrimer LT-alpha2-beta), OPGL, FasL, CD27L, CD30L, CD40L, 4-lBBL, DcR3, OX40L, TNF-gamma (International Publication No. WO 96/14328), AIM-I (International Publication No. WO 97/33899), AIM-II (International Publication No. WO 97/34911), APRIL (J. Exp. Med. 188(6):1185- 1190), endokine-alpha (International Publication No.
  • WO 98/07880 OPG, OX40, and nerve growth factor (NGF), and soluble forms of Fas, CD30, CD27, CD40 and 4-IBB, TR2 (International Publication No. WO 96/34095), DR3 (International Publication No. WO 97/33904), DR4 (International Publication No. WO 98/32856), TR5 (International Publication No. WO 98/30693), TR6 (International Publication No. WO 98/30694), TR7 (International Publication No. WO 98/41629), TRANK, TR9 (International Publication No. WO 98/56892), TRIO (International Publication No. WO 98/54202),312C2 (International Publication No.
  • WO 98/06842 WO 98/06842
  • TR12 CAD
  • v-FLIP v-FLIP
  • the heterologous molecules are any member of the TNF family.
  • Neutrokine-alpha and/or Neutroldne-alphaSV polypeptides of the invention are fusedwith soluble CD40L polypeptides, or biologically acitve fragments or variants thereof.
  • Neutrokine-alpha and/or Neutrokine- alphaSV polypeptides of the invention are fused with soluble APRIL polypeptides (e.g., SEQ DD NO:20 or SEQ DD NO:47), or biologically acitve fragments or variants thereof.
  • Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides protein engineering may be employed.
  • Recombinant DNA technology known to those skilled in the art can be used to create novel mutant proteins or "muteins including single or multiple amino acid substitutions, deletions, additions or fusion proteins.
  • Such modified polypeptides can show, e.g., enhanced activity or increased stability.
  • they may be purified in higher yields and show better solubility than the corresponding natural polypeptide, at least under certain purification and storage conditions.
  • deletions of N-terminal amino acids up to the Gly (G) residue at position 191 in Figures 1A and IB may retain some biological activity such as, for example, the ability to stimulate lymphocyte (e.g., B cell) proliferation, differentiation, and/or activation, and cytotoxicity to appropriate target cells.
  • Polypeptides having further N-terminal deletions including the Gly (G) residue would not be expected to retain biological activities because it is known that this residue in TNF-related polypeptides is in the beginning of the conserved domain required for biological activities.
  • the present invention further provides polypeptides having one or more residues deleted from the amino terminus of the amino acid sequence of the Neutrokine-alpha shown in Figures 1A and IB (SEQ ED NO:2), up to the glycine residue at position 191 (Gly-191 residue from the amino terminus), and polynucleotides encoding such polypeptides.
  • the present invention provides polypeptides comprising, or alternatively consisting of, the amino acid sequence of residues n ! -285 of SEQ ED NO:2, where n is an integer in the range of the amino acid position of amino acid residues 2-190 of the amino acid sequence in SEQ DD NO:2.
  • polynucleotides encoding these polypeptides are also encompassed by the invention. More in particular, the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of an amino acid sequence selected from the group consisting of residues 2-285, 3-285 4-285, 5-285, 6-285, 7-285, 8-285, 9-285, 10-285, 11-285, 12-285, 13-285, 14-285 15-285, 16-285, 17-285, 18-285, 19-285, 20-285, 21-285, 22-285, 23-285, 24-285 25-285, 26-285, 27-285, 28-285, 29-285, 30-285, 31-285, 32-285, 33-285, 34-285 35-285, 36-285, 37-285, 38-285, 39-285, 40-285, 41-285, 42-285, 43-285, 44-285 45-285, 46-285, 47-285, 48-285, 49-285, 50-285,
  • polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • the present invention is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • Polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention, as are polypeptides comprising, or alternatively consisting of, an amino acid sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • deletions of N- and C-terminal amino acid residues from the predicted extracellular region of the polypeptide may retain some biological activity such as, for example, ligand binding, stimulation of lymphocyte (e.g., B cell) proliferation, differentiation, and/or activation, and modulation of cell replication or modulation of target cell activities.
  • lymphocyte e.g., B cell
  • the present invention further provides polypeptides having one or more residues deleted from the amino terminus of the amino acid sequence of Neutrokine-alpha shown in SEQ DD NO:2, up to the glycine residue at position number 280, and polynucleotides encoding such polypeptides.
  • the present invention provides polypeptides comprising, or alternatively consisting of, the amino acid sequence of residues n 2 -285 of SEQ DD NO:2, where n 2 is an integer in the range of the amino acid position of amino acid residues 73-280 in SEQ DD NO:2, and 73 is the position of the first residue from the N-terminus of the predicted extracellular domain of the Neutrokine-alpha polypeptide (disclosed in SEQ DD NO:2). Polynucleotides encoding these polypeptides are also encompassed by the invention.
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, an amino acid sequence selected from the group consisting of residues of Q-73 to L-285; G-74 to L-285; D-75 to L-285; L-76 to L-285; A-77 to L-285; S-78 to L-285; L-79 to L-285; R-80 to L-285; A-81 to L-285; E-82 to L-285; L-83 to L-285; Q-84 to L-285; G-85 to L-285; H-86 to L-285; H-87 to L-285; A-88 to L-285; E-89 to L-285; K-90 to L-285; L-91 to L-285; P-92 to L-285; A-93 to L-285; G-94 to L-285; A-95 to L-285; G-96 to L-285; A-97 to L-285; P-98 to L
  • polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • the present invention is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the Neutrokine-alpha and/or Neutroldne-alphaSV polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • Polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention, as are polypeptides comprising, or alternatively consisting of, ah amino acid sequence at least 80%, 85%, 90%, 92%?, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 80%, 85%, 90% identical and more preferably at least 95%, 96%, 97%, 98%, 99% or 100% identical to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ DD NO:2).
  • Preferred embodiments of the invention are directed to nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 90% identical to a polynucleotide sequence encoding the Neutrokine- alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ DD NO:2).
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 95% identical to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ED NO:2).
  • More preferred embodiments of the invention are directed to nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 96% identical to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ID NO:2).
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 97% to a polynucleotide sequence encoding the Neutrokine- alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ED NO:2).
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 98% to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ ED NO:2).
  • nucleic acid molecules comprising, or alternatively consisting of a polynucleotide having a nucleotide sequence at least 99% identical to a polynucleotide sequence encoding the Neutrokine-alpha polypeptide having the amino acid sequence at positions 134-285 in Figures 1A and IB (SEQ DD NO:2).
  • a polypeptide comprising, or alternatively consisting of, one of the following N-terminally deleted polypeptide fragments of Neutrokine-alpha and/or Neutrokine-alphaSV are preferred: amino acid residues Ala-71 through Leu-285, amino acid residues Ala-81 through Leu-285, amino acid residues Leu-112 through Leu-285, amino acid residues Ala-134 through Leu-285, amino acid residues Leu-147 through Leu-285, and amino acid residues Gly-161 through Leu-285 of SEQ DD NO:2.
  • Polynucleotides encoding these polypeptides are also encompassed by the invention.
  • C-terminal deletion muteins are known. For instance, Interferon gamma shows up to ten times higher activities by deleting 8-10 amino acid residues from the carboxy terminus of the protein (D ⁇ beli et al., /. Biotechnology 7:199-216 (1988). Since the present protein is a member of the TNF polypeptide family, deletions of C-terminal amino acids up to the leucine residue at position 284 are expected to retain most if not all biological activity such as, for example, ligand binding, the ability to stimulate lymphocyte (e.g., B cell) proliferation, differentiation, and/or activation, and modulation of cell replication.
  • lymphocyte e.g., B cell
  • Polypeptides having deletions of up to about 10 additional C-terminal residues also may retain some activity such as receptor binding, although such polypeptides would lack a portion of the conserved TNF domain which extends to about Leu-284 of SEQ ID NO:2.
  • deletion of one or more amino acids from the C-terminus of a protein results in modification or loss of one or more biological functions of the protein, other functional activities may still be retained.
  • the ability of the shortened protein to induce and/or bind to antibodies which recognize the complete or mature protein generally will be retained when less than the majority of the residues of the complete or mature protein are removed from the C-tprminus. Whether a particular polypeptide lacking C-terminal residues of a complete protein retains such immunologic activities can readily be determined by routine methods described herein and otherwise known in the art.
  • the present invention further provides polypeptides having one or more residues deleted from the carboxy terminus of the amino acid sequence of the Neutrokine-alpha polypeptide shown in Figures 1A and IB (SEQ DD NO:2), up to the glycine residue at position 274 (Gly-274) and polynucleotides encoding such polypeptides.
  • the present invention provides polypeptides comprising, or alternatively consisting of, the amino acid sequence of residues 1-m 1 of the amino acid sequence in SEQ DD NO:2, where m 1 is any integer in the range of the amino acid position of amino acid residues 274-284 in SEQ DD NO:2.
  • polypeptides encoding these polypeptides are also encompassed by the invention. More in particular, the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, an amino acid sequence selected from the group consisting of residues 1-274, 1-275, 1-276, 1-277, 1-278, 1-279, 1-280, 1-281, 1-282, 1-283 and 1-284 of SEQ DD NO:2. Polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • the present invention is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the Neutrokine-alpha and or Neutrokine-alphaSV polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • Polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention, as are polypeptides comprising, or alternatively consisting of, an amino acid sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • polypeptides comprising, or alternatively consisting of, one or more amino acids deleted from both the amino and the carboxyl termini, which may be described generally as having residues n'-m 1 of SEQ DD NO:2, where n 1 and m 1 are integers as defined above. Also included are a nucleotide sequence encoding a polypeptide comprising, or alternatively consisting of, a portion of the complete Neutrokine-alpha amino acid sequence encoded by the deposited cDNA clone contained in ATCC Accession No.
  • deletions of C-terminal amino acid residues of the predicted extracellular domain of Neutrokine-alpha up to the leucine residue at position 79 of SEQ DD NO:2 may retain some biological activity, such as, for example, ligand binding, stimulation of lymphocyte (e.g., B cell) proliferation, differentiation, and/or activation, and modulation of cell replication or modulation of target cell activities.
  • Polypeptides having further C-terminal deletions including Leu-79 of SEQ DD NO:2 would not be expected to retain biological activities.
  • the present invention further provides polypeptides having one or more residues deleted from the carboxy terminus of the amino acid sequence of the predicted extracellular domain of Neutrokine-alpha polypeptide shown in SEQ DD NO:2, up to the leucine residue at position 79 of SEQ ED NO:2, and polynucleotides encoding such polypeptides.
  • the present invention provides polypeptides comprising, or alternatively consisting of, the amino acid sequence of residues 73-m of the amino acid sequence in SEQ ED NO:2, where m 2 is any integer in the range of the amino acid position of amino acid residues 79 to 285 in the amino acid sequence in SEQ DD NO:2, and residue 78 is the position of the first residue at the C- terminus of the predicted extracellular domain of the Neutrokine-alpha polypeptide (disclosed in SEQ DD NO:2).
  • Polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, an amino acid sequence selected from the group consisting of residues Q-73 to Leu-285; Q-73 to L-284; Q-73 to K-283; Q-73 to L-282; Q-73 to A-281; Q-73 to G-280; Q-73 to F-279; Q-73 to F-278; Q-73 to T-277; Q-73 to V-276; Q-73 to D-275; Q-73 to G-274; Q-73 to D-273; Q-73 to L-272; Q-73 to S-271; Q-73 to 1-270; Q-73 to Q-269; Q-73 to A-268; Q-73 to N-267; Q-73 to E-266; Q-73 to R-265; Q-73 to P-264; Q-73 to 1-263; Q-73 to A-262; Q-73 to L-261; Q-73 to Q-
  • polypeptides encoded by these polynucleotides are also encompassed by the invention.
  • the present invention is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • Polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention, as are polypeptides comprising, or alternatively consisting of, an amino acid sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • the invention also provides polypeptides having one or more amino acids deleted from both the amino and the carboxyl termini of the predicted extracellular domain of Neutrokine-alpha, which may be described generally as having residues n 2 -m 2 of SEQ ED NO:2 where n 2 and m 2 are integers as defined above.
  • Whether a particular polypeptide lacking N-terminal residues of a complete polypeptide retains such immunologic activities can readily be determined by routine methods described herein and otherwise known in the art. It is not unlikely that a Neutrokine-alpha mutein with a large number of deleted N-terminal amino acid residues may retain some functional (e.g., biological or immunogenic) activities. In fact, peptides composed of as few as six Neutrokine-alpha amino acid residues may often evoke an immune response.
  • the present invention further provides polypeptides having one or more residues deleted from the amino terminus of the predicted full-length amino acid sequence of the Neutrokine-alpha shown in SEQ DD NO:2, up to the glycine residue at position number 280 of the sequence shown SEQ ED NO:2 and polynucleotides encoding such polypeptides.
  • the present invention provides polypeptides comprising the amino acid sequence of residues n 3 -285 of the sequence shown in SEQ DD NO:2, where n 3 is an integer in the range of the amino acid position of amino acid residues 1 to 280 of the amino acid sequence in SEQ ED NO:2.
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, an amino acid sequence selected from the group consisting of residues of D-2 to L-285; D-3 to L-285; S-4 to L-285; T-5 to L-285; E-6 to L-285; R-7 to L-285; E-8 to L-285; Q-9 to L-285; S-10 to L-285; R-ll to L-285; L-12 to L-285; T-13 to L-285; S-14 to L-285; C-15 to L-285; L-16 to L-285; K-17 to L-285; K-18 to L-285; R-19 to L-285; E-20 to L-285; E-21 to L-285; M-22 to L-285; K-23 to L-285; L-24 to L-285; K-25 to L-285; E-26 to L-285; C-27 to L-285; V-28 to L-285; S-29 to L-285; 1-30 to L
  • the present application is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%, 90%, 92%, 95%), 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • Polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention, as are polypeptides comprising an amino acid sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • Neutrokine-alpha mutein with a large number of deleted C-terminal amino acid residues may retain some functional (e.g., biological or immunogenic) activities.
  • peptides composed of as few as six Neutrokine-alpha amino acid residues may often evoke an immune response.
  • the present invention further provides in another embodiment, polypeptides having one or more residues deleted from the carboxy terminus of the amino acid sequence of the Neutrokine-alpha shown in SEQ ID NO:2, up to the glutamic acid residue at position number 6, and polynucleotides encoding such polypeptides.
  • the present invention provides polypeptides comprising the amino acid sequence of residues 1-m 3 of SEQ DD NO:2, where m 3 is an integer in the range of the amino acid position of amino acid residues 6-284 of the amino acid sequence in SEQ DD NO:2.
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, an amino acid sequence selected from the group consisting of residues M-1 to L-284; M-1 to K-283; M-1 to L-282; M-1 to A-281; M-1 to G-280; M-1 to F-279; M-1 to F-278; M-1 to T-277; M-1 to V-276; M-1 to D-275; M-1 to G-274; M-1 to D-273; M-1 to L-272; M-1 to S-271; M-1 to 1-270; M-1 to Q-269; M-1 to A-268; M-1 to N-267; M-1 to E-266; M-1 to R-265; M-1 to P-264; M-1 to 1-263; M-1 to A-262; M-1 to L-261; M-1 to Q-260; M-1 to L-259; M-1 to E-258; M-1 to D-257; M-1 to G-256; M-1 to E-
  • M-1 to L-178 M-1 to A-177; M-1 to S-176 M-1 to G-175; M-1 to R-174; M-1 to K-173 M-1 to F-172; M-1 to S-171; M-1 to L-170 M-1 to L-169; M-1 to W-168; M-1 to P-167 M-1 to V-166; M-1 to F-165; M-1 to T-164 M-1 to Y-163; M-1 to S-162; M-1 to G-161 M-1 to K-160; M-1 to Q-159; M-1 to 1-158 M-1 to T-157; M-1 to P-156; M-1 to T-155 M-1 to E-154; M-1 to S-153; M-1 to D-152 M-1 to A-151; M-1 to 1-150; M-1 to L-149 M-1 to Q-148; M-1 to L-147; M-1 to C-146 M-1 to D-145; M-1 to Q-144; M-1 to T-143 M-1 to V-142; M-1 to T-141
  • the present application is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention, as are polypeptides comprising an amino acid sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • the invention also provides polypeptides having one or more amin ⁇ acids deleted from both the amino and the carboxyl termini of a Neutrokine-alpha polypeptide, which may be described generally as having residues n 3 -m 3 of SEQ DD NO: 2, where n 3 and m 3 are integers as defined above.
  • deletions of N- and C-terminal amino acid residues from the predicted extracellular region of the polypeptide at positions Gln-73 to Leu-266 of SEQ DD NO: 19 may retain some functional activity, such as, for example, ligand binding, to stimulation of lymphocyte (e.g., B cell) proliferation, differentiation, and/or activation, modulation of cell replication, modulation of target cell activities and/or immunogenicity.
  • functional activity e.g., biological activity
  • deletions of N- and C-terminal amino acid residues from the predicted extracellular region of the polypeptide at positions Gln-73 to Leu-266 of SEQ DD NO: 19 may retain some functional activity, such as, for example, ligand binding, to stimulation of lymphocyte (e.g., B cell) proliferation, differentiation, and/or activation, modulation of cell replication, modulation of target cell activities and/or immunogenicity.
  • lymphocyte e.g., B cell
  • the present invention further provides polypeptides having one or more residues deleted from the amino terminus of the amino acid sequence of Neutrokine-alphaSV shown in SEQ ED NO: 19, up to the glycine residue at position number 261, and polynucleotides encoding such polypeptides.
  • the present invention provides polypeptides comprising the amino acid sequence of residues n 4 -266 of SEQ ID NO: 19, where n 4 is an integer in the range of the amino acid position of amino acid residues 73-261 of the amino acid sequence in SEQ ED NO:19, and 261 is the position of the first residue from the N-terminus of the predicted extracellular domain Neutroldne-alphaSV polypeptide (shown in SEQ DD NO: 19).
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, an amino acid sequence selected from the group consisting of residues of Q-73 to L-266; G-74 to L-266; D-75 to L-266; L-76 to L-266; A-77 to L-266; S-78 to L-266; L-79 to L-266; R-80 to L-266; A-81 to L-266; E-82 to L-266; L-83 to L-266; Q-84 to L-266; G-85 to L-266; H-86 to L-266; H-87 to L-266; A-88 to L-266; E-89 to L-266; K-90 to L-266; L-91 to L-266; P-92 to L-266; A-93 to L-266; G-94 to L-266; A-95 to L-266; G-96 to L-266; A-97 to L-266; P
  • the present application is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the Neutrokine-alpha and/or Neutroldne-alphaSV polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention, as are polypeptides comprising an amino acid sequence at least 80%), 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • polypeptides comprising an amino acid sequence at least 80%), 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • deletions of C-terminal amino acid residues of the predicted extracellular domain of Neutroldne-alphaSV up to the leucine residue at position 79 of SEQ ED NO: 19 may retain some functional activity, such as, for example, ligand binding, the ability to stimulate lymphocyte (e.g., B cell) proliferation, differentiation, and/or activation, modulation of cell replication, modulation of target cell activities and/or immunogenicity.
  • Polypeptides having further C-terminal deletions including Leu-79 of SEQ ID NO: 19 would not be expected to retain biological activities.
  • the present invention further provides polypeptides having one or more residues from the carboxy terminus of the amino acid sequence of the predicted extracellular domain of Neutrokine-alphaSV shown in SEQ ED NO: 19, up to the leucine residue at position 79 of SEQ ED NO: 19, and polynucleotides encoding such polypeptides.
  • the present invention provides polypeptides having the amino acid sequence of residues 73-m 4 of the amino acid sequence in SEQ ED NO:19, where m 4 is any integer in the range of the amino acid position of amino acid residues 79-265 of the amino acid sequence in SEQ ED NO: 19.
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, an amino acid sequence selected from the group consisting of residues Q-73 to L-265; Q-73 to K-264; Q-73 to L-263; Q-73 to A-262; Q-73 to G-261; Q-73 to F-260; Q-73 to F-259; Q-73 to T-258; Q-73 to V-257; Q-73 to D-256; Q-73 to G-255; Q-73 to D-254; Q-73 to L-253; Q-73 to S-252; Q-73 to 1-251; Q-73 to Q-250; Q-73 to A-249; Q-73 to N-248; Q-73 to E-247; Q-73 to R-246; Q-73 to P-245; Q-73 to 1-244; Q-73 to A-243; Q-73 to L-242; Q-73 to Q-241; Q-
  • the present application is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the Neutrokine-alpha and/or Neutroldne-alphaSV polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention, as are polypeptides comprising an amino acid sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • the invention also provides polypeptides having one or more amino acids deleted from both the amino and the carboxyl termini of the predicted extracellular domain of Neutrokine-alphaSV, which may be described generally as having residues n 4 -m 4 of SEQ ED NO: 19 where n 4 and m 4 are integers as defined above.
  • Whether a particular polypeptide lacking N-terminal residues of a complete polypeptide retains such immunologic activities can readily be determined by routine methods described herein and otherwise known in the art. It is not unlikely that a Neutroldne-alphaSV mutein with a large number of deleted N-terminal amino acid residues may retain functional (e.g., immunogenic) activities. In fact, peptides composed of as few as six Neutroldne-alphaSV amino acid residues may often evoke an immune response.
  • the present invention further provides polypeptides having one or more residues deleted from the amino terminus of the predicted full-length amino acid sequence of the Neutrokine-alphaSV shown in SEQ ED NO: 19, up to the glycine residue at position number 261 of the sequence shown SEQ DD NO: 19 and polynucleotides encoding such polypeptides.
  • the present invention provides polypeptides comprising the amino acid sequence of residues n 5 -266 of the sequence shown in SEQ DD NO: 19, where n is an integer in the range of the amino acid position of amino acid residues 1 to 261 of the amino acid sequence in SEQ ID NO: 19.
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, an amino acid sequence selected from the group consisting of residues of D-2 to L-266; D-3 to L-266; S-4 to L-266; T-5 to L-266; E-6 to L-266; R-7 to L-266; E-8 to L-266; Q-9 to L-266; S-10 to L-266; R-ll to L-266; L-12 to L-266; T-13 to L-266; S-14 to L-266; C-15 to L-266; L-16 to L-266; K-17 to L-266; K-18 to L-266; R-19 to L-266; E-20 to L-266; E-21 to L-266; M-22 to L-266; K-23 to L-266; L-24 to L-266; K-25 to L-266; E-26 to L-266; C-27 to L-266; V-28 to L-266; S-29 to L-266; 1-30 to L
  • the present application is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%), 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the Neutrokine-alpha and/or Neutroldne-alphaSV polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention, as are polypeptides comprising an amino acid sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • polypeptides comprising an amino acid sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • a shortened Neutroldne-alphaSV mutein to induce and/or bind to antibodies which recognize the complete or mature form or the extracellular domain of the polypeptide generally will be retained when less than the majority of the residues of the complete or mature form or the extracellular domain of the polypeptide are removed from the C-terminus.
  • Whether a particular polypeptide lacking C-terminal residues of a complete polypeptide retains such immunologic activities can readily be determined by routine methods described herein and otherwise known in the art. It is not unlikely that a Neutrokine-alphaSV mutein with a large number of deleted C-terminal amino acid residues may retain some functional (e.g., immunogenic) activities. In fact, peptides composed of as few as six Neutrokine-alphaSV amino acid residues may often evoke an immune response.
  • the present invention further provides in another embodiment, polypeptides having one or more residues deleted from the carboxy terminus of the amino acid sequence of the Neutrokine-alphaSV shown in SEQ ID NO: 19, up to the glutamic acid residue at position number 6, and polynucleotides encoding such polypeptides.
  • the present invention provides polypeptides comprising the amino acid sequence of residues 1-m 5 of SEQ ED NO: 19, where m 5 is an integer in the range of the amino acid position of amino acid residues 6 to 265 in the amino acid sequence of SEQ ED NO:19.
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, an amino acid sequence selected from the group consisting of residues M-1 to L-265; M-1 to K-264; M-1 to L-263 M- 1 to A-262; M-1 to G-261; M-1 to F-260; M-1 to F-259; M-1 to T-258; M-1 to V-257 M-1 to D-256; M-1 to G-255; M-1 to D-254; M-1 to L-253; M-1 to S-252; M-1 to 1-251 M* 1 to Q-250; M-1 to A-249; M-1 to N-248; M-1 to E-247; M-1 to R-246; M-1 to P-245 M* 1 to 1-244; M-1 to A-243; M-1 to L-242; M-1 to Q-241; M-1 to L-240; M-1 to E-239 M- 1 to D-238; M-1 to G-237; M-1 to E-2
  • the present application is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the polynucleotide sequence encoding the Neutrokine-alpha and/or Neutroldne-alphaSV polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention, as are polypeptides comprising an amino acid sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • the invention also provides polypeptides having one or more amino acids deleted from both the amino and the carboxyl termini of a Neutrokine-alphaSV polypeptide, which may be described generally as having residues n 5 -m 5 of SEQ DD NO: 19, where n 5 and m 5 are integers as defined above.
  • the present invention provides polypeptides comprising the amino acid sequence of residues 134-m 6 of SEQ DD NO:2, where m 6 is an integer from 140 to 285, corresponding to the position of the amino acid residue in SEQ DD NO:2.
  • the invention provides polynucleotides encoding polypeptides comprising, or alternatively consisting of, an amino acid sequence selected from the group consisting of residues A-134 to Leu-285; A-134 to L-284; A-134 to K-283; A-134 to L-282; A-134 to A-281; A-134 to G-280; A-134 to F-279; A-134 to F-278; A-134 to T-277; A-134 to V-276; A-134 to D-275; A-134 to G-274; A-134 to D-273; A-134 to L-272; A-134 to S-271 A-134 to 1-270; A-134 to Q-269; A-134 to A-268; A-134 to N-267; A-134 to E-266 A-134 to R-265; A-134 to P-264; A-134 to 1-263; A-134 to A-262; A-134 to L-261 A-134 to Q-260; A-134 to L-259
  • the present application is also directed to nucleic acid molecules comprising, or alternatively, consisting of, a polynucleotide sequence at least 80%, 85%, 90%, 92%, 95%, 96%), 97%, 98% or 99%) identical to the polynucleotide sequence encoding the Neutrokine-alpha and/or Neutroldne-alphaSV polypeptides described above.
  • the present invention also encompasses the above polynucleotide sequences fused to a heterologous polynucleotide sequence.
  • Polypeptides encoded by these nucleic acids and/or polynucleotide sequences are also encompassed by the invention, as are polypeptides comprising an amino acid sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to the amino acid sequence described above, and polynucleotides that encode such polypeptides.
  • Additional preferred polypeptide fragments of the invention comprise, or alternatively consist of, an amino acid sequence selected from the group consisting of residues: M-1 to C-15; D-2 to L-16; D-3 to K-17; S-4 to K-18; T-5 to R-19; E-6 to E-20; R-7 to E-21; E-8 to M-22; Q-9 to K-23; S-10 to L-24; R-ll to K-25; L-12 to E-26; T-13 to C-27; S-14 to V-28; C-15 to S-29; L-16 to 1-30; K-17 to L-31; K-18 to P-32; R-19 to R- 33; E-20 to K-34; E-21 to E-35; M-22 to S-36; K-23 to P-37; L-24 to S-38; K-25 to V-39; E-26 to R-40; C-27 to S-41; V-28 to S-42; S-29 to K-43; 1-30 to D-44; L-31 to G-45; P-32 to K-46
  • these polypeptide fragments have one or more functional activities (e.g., biological activity, antigenicity, and immunogenicity) of Neutrokine-alpha and/or Neutrokine-alpha SV polypeptides of the invention and may be used, for example, to generate or screen for antibodies, as described further below.
  • the present invention is also directed to polypeptides comprising, or alternatively, consisting of, an amino acid sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to an amino acid sequence described above.
  • the present invention also encompasses the above amino acid sequences fused to a heterologous amino acid sequence as described herein.
  • Additional preferred polypeptide fragments of the invention comprise, or alternatively consist of, an amino acid sequence selected from the group consisting of residues: M-1 to C-15; D-2 to L-16; D-3 to K-17; S-4 to K-18; T-5 to R-19; E-6 to E-20; R-7 to E-21; E-8 to M-22; Q-9 to K-23; S-10 to L-24; R-11 to K-25; L-12 to E-26; T-13 to C-27; S-14 to V-28; C-15 to S-29; L-16 to 1-30; K-17 to L-31; K-18 to P-32; R-19 to R- 33; E-20 to K-34; E-21 to E-35; M-22 to S-36; K-23 to P-37; L-24 to S-38; K-25 to V-39; E-26 to R-40; C-27 to S-41; V-28 to S-42; S-29 to K-43
  • these polypeptide fragments have one or more functional activities (e.g., biological activity, antigenicity, and immunogenicity) of Neutrokine-alpha and/or Neutrokine-alpha SV polypeptides of the invention and may be used, for example, to generate or screen for antibodies, as described further below.
  • the present invention is also directed to polypeptides comprising, or alternatively, consisting of, an amino acid sequence at least 80%, 85%, 90%, 92%, 95%, 96%, 97%, 98% or 99% identical to an amino acid sequence described above.
  • the present invention also encompasses the above amino acid sequences fused to a heterologous amino acid sequence as described herein.
  • Additional preferred polypeptide fragments of the invention comprise, or alternatively consist of, an amino acid sequence selected from the group consisting of residues: M-1 to F-15; D-2 to C-16; E-3 to S-17; S-4 to E-18; A-5 to K-19; K-6 to G-20; T-7 to E-21; L-8 to D-22; P-9 to M-23; P-10 to K-24; P-ll to V-25; C-12 to G-26; L-13 to Y-27; C-14 to D-28; F-15 to P-29; C-16 to 1-30; S-17 to T-31; E-18 to P-32; K-19 to Q- 33; G-20 to K-34; E-21 to E-35; D-22 to E-36; M-23 to G-37; K-24 to A-38; V-25 to W- 39; G-26 to F-40; Y-27 to G-41; D-28 to 1-42; P-29 to C
  • these polypeptide fragments have one or more functional activities (e.g., biological activity, antigenicity, and immunogenicity) of Neutrokine-alpha and/or Neutrokine-alpha SV polypeptides of the invention and may be used, for example, to generate or screen for antibodies, as described further below.
  • the present invention is also directed to polypeptides comprising, or alternatively, consisting of, an amino acid sequence at least 80%, 85%, 90%, 92%), 95%, 96%, 97%, 98% or 99% identical to an amino acid sequence described above.
  • the present invention also encompasses the above amino acid sequences fused to a heterologous amino acid sequence as described herein.
  • the invention further includes variations of the Neutrokine-alpha polypeptide which show Neutrokine-alpha polypeptide functional activity (e.g., biological activity) or which include regions of Neutrokine-alpha polypeptide such as the polypeptide fragments described herein.
  • the invention also includes variations of the Neutrokine-alphaSV polypeptide which show Neutrokine-alphaSV polypeptide functional activity (e.g., biological activity) or which include regions of Neutrokine-alphaSV polypeptide such as the polypeptide fragments described herein.
  • Such mutants include deletions, insertions, inversions, repeats, and type substitutions selected according to general rules known in the art so as have little effect on activity.
  • conservative substitutions are the replacements, one for another, among the aliphatic amino acids Ala, Val, Leu and He; interchange of the hydroxyl residues Ser and Thr, exchange of the acidic residues Asp and Glu, substitution between the amide residues Asn and Gin, exchange of the basic residues Lys and Arg and replacements among the aromatic residues Phe, Tyr.
  • the fragment, derivative or analog of the polypeptide of Figures 1A and IB may be (i) one in which one or more of the amino acid residues are substituted with a conserved or non-conserved amino acid residue (preferably a conserved amino acid residue) and such substituted amino acid residue may or may not be one encoded by the genetic code, or (ii) one in which one or more of the amino acid residues includes a substituent group, or (iii) one in which the extracellular domain of the polypeptide is fused with another compound, such as a compound to increase the half -life of the polypeptide (for example, polyethylene glycol), or (iv) one in which the additional amino acids are fused to the extracellular domain of the polypeptide, such as an IgG Fc fusion region peptide or leader or secretory sequence or a sequence which is employed for purification of the extracellular domain of the poly
  • the fragment, derivative or analog of the polypeptide of Figures 5A and 5B may be (i) one in which one or more of the amino acid residues are substituted with a conserved or non-conserved amino acid residue (preferably a conserved amino acid residue) and such substituted amino acid residue may or may not be one encoded by the genetic code, or (ii) one in which one or more of the amino acid residues includes a substituent group, or (iii) one in which the extracellular domain of the polypeptide is fused with another compound, such as a compound to increase the half -life of the polypeptide (for example, polyethylene glycol), or (iv) one in which the additional amino acids are fused to the extracellular domain of the polypeptide, such as, a soluble biologically
  • the Neutrokine-alpha and/or Neutroldne-alphaSV polypeptides of the present invention may include one or more amino acid substitutions, deletions or additions, either from natural mutations or human manipulation. As indicated, changes are preferably of a minor nature, such as conservative amino acid substitutions that do not significantly affect the folding or activity of the protein (see Table II).
  • polypeptide comprises, or alternatively consists of, the amino acid sequence of a Neutrokine-alpha or Neutrokine-alphaSV polypeptide having an amino acid sequence which contains at least one conservative amino acid substitution, but not more than 50 conservative amino acid substitutions, even more preferably, not more than 40 conservative amino acid substitutions, still more preferably, not more than 30 conservative amino acid substitutions, and still even more preferably, not more than 20 conservative amino acid substitutions.
  • a peptide or polypeptide in order of ever-increasing preference, it is highly preferable for a peptide or polypeptide to have an amino acid sequence which comprises the amino acid sequence of a Neutrokine-alpha polypeptide, which contains at least one, but not more than 10, 9, 8, 7, 6, 5, 4, 3, 2 or 1 conservative amino acid substitutions.
  • site directed changes at the amino acid level of Neutrokine-alpha can be made by replacing a particular amino acid with a conservative substitution.
  • Preferred conservative substitution mutations of the Neutrokine-alpha amino acid sequence provided in SEQ DD NO:2 include: Ml replaced with A, G, I, L, S, T, or V; D2 replaced with E; D3 replaced with E; S4 replaced with A, G, I, L, T, M, or V; T5 replaced with A, G, I, L, S, M, or V; E6 replaced with D; R7 replaced with H, or K; E8 replaced with D; Q9 replaced with N; S10 replaced with A, G, I, L, T, M, or V; Rll replaced with Ml replaced with A, G, I, L, S, T, or V; D2 replaced with E; D3 replaced with E; S4 replaced with A, G, I, L, T, M, or V; T5 replaced with A, G, I, L, S, M, or V; E6 replaced with D; R7 replaced with H, or K; E8 replaced with D; Q9 replaced with N; S10 replaced with A, G, I
  • L12 replaced with A, G, I, S, T, M, or V
  • T13 replaced with A, G, I, L, S, M, or
  • T202 replaced with A, G, I, L, S, M, or V
  • D203 replaced with E
  • K204 replaced with H, or R
  • T205 replaced with A, G, I, L, S, M, or V
  • Y206 replaced with F, or W
  • A207 replaced with G, I, L, S, T, M, or V
  • M208 replaced with A, G, I, L, S, T, or V
  • G209 replaced with A, I, L, S, T, M, or V
  • H210 replaced with K, or R
  • L211 replaced with A, G, I, S, T, M, or V
  • 1212 replaced with A, G, L, S, T, M, or V
  • Q213 replaced with N
  • R214 replaced with H, or K
  • K215 replaced with H, or R
  • K216 replaced with H, or R
  • V217 replaced with A, G, I, L, S, T, or M
  • H218 replaced with K, or R
  • V219 replaced
  • G, I, S, T, M, or V G, I, S, T, M, or V; A262 replaced with G, I, L, S, T, M, or V; 1263 replaced with A, G, L, S, T, M, or V; R265 replaced with H, or K; E266 replaced with D; N267 replaced with Q; A268 replaced with G, I, L, S, T, M, or V; Q269 replaced with N; 1270 replaced with A, G, L, S, T, M, or V; S271 replaced with A, G, I, L, T, M, or V; L272 replaced with A, G, I, S, T, M, or V; D273 replaced with E; G274 replaced with A, I, L, S, T, M, or V; D275 replaced with E; V276 replaced with A, G, I, L, S, T, or M; T277 replaced with A, G, I, L, S, M, or V; F278 replaced with W,
  • the resulting Neutroldne-alpha proteins of the invention may be routinely screened for Neutrokine-alpha and/or Neutrokine-alphaSV functional activity and/or physical properties (such as, for example, enhanced or reduced stability and/or solubility).
  • the resulting proteins of the invention have an increased and/or a decreased Neutrokine-alpha and/or Neutrokine- alphaSV functional activity.
  • the resulting Neutrokine-alpha and/or Neutroldne-alphaSV proteins of the invention have more than one increased and/or decreased Neutrokine-alpha and/or Neutroldne-alpha SV functional activity and/or physical property.
  • site directed changes at the amino acid level of Neutrokine-alphaSV can be made by replacing a particular amino acid with a conservative substitution.
  • NO: 19 include: Ml replaced with A, G, I, L, S, T, or V; D2 replaced with E; D3 replaced with E; S4 replaced with A, G, I, L, T, M, or V; T5 replaced with A, G, I, L, S, M, or V; E6 replaced with D; R7 replaced with H, or K; E8 replaced with D; Q9 replaced with N; S10 replaced with A, G, I, L, T, M, or V; Rll replaced with H, or K; L12 replaced with A, G, I, S, T, M, or V; T13 replaced with A, G, I, L, S, M, or V; S14 replaced with A, G, I, L, T, M, or V; L16 replaced with A, G, I, S, T, M, or V; K17 replaced with H, or R; K18 replaced with H, or R; R19 replaced with H, or K; E20 replaced with D; E21 replaced with D; M22 replaced with A, G, I,
  • the resulting Neutrokine-alpha proteins of the invention may be routinely screened for Neutrokine-alpha and/or Neutrokine-alphaSV functional activity and/or physical properties (such as, for example, enhanced or reduced stability and/or solubility).
  • the resulting proteins of the invention have an increased and/or a decreased Neutrokine-alpha and/or Neutrokine-alphaSV functional activity.
  • the resulting Neutrokine-alpha and/or Neutrokine-alphaSV proteins of the invention have more than one increased and/or decreased Neutrokine-alpha and/or Neutrokine-alpha SV functional activity and/or physical property.
  • site directed changes at the amino acid level of Neutrokine-alpha can be made by replacing a particular amino acid with a conservative substitution.
  • Preferred conservative substitution mutations of the Neutrokine-alpha amino acid sequence provided in SEQ DD NO:23 include: Rl replaced with H, or K; V2 replaced with A, G, I, L, S, T, or M; V3 replaced with A, G, I, L, S, T, or M; D4 replaced with E; L5 replaced with A, G, I, S, T, M, or V; S6 replaced with A, G, I, L, T, M, or V; A7 replaced with G, I, L, S, T, M, or V; A10 replaced with G, I, L, S, T, M, or V; L13 replaced with A, G, I, S, T, M, or V; G15 replaced with A, I, L, S, T, M, or V; R17 replaced with H, or K; HI 8 replaced with K, or
  • the resulting Neutrokine-alpha proteins of the invention may be routinely screened for Neutrokine-alpha and/or Neutrokine-alphaSV functional activity and/or physical properties (such as, for example, enhanced or reduced stability and/or solubility).
  • the resulting proteins of the invention have an increased and/or a decreased Neutrokine-alpha and/or Neutroldne-alphaSV functional activity.
  • the resulting Neutrokine-alpha and/or Neutrokine-alphaSV proteins of the invention have more than one increased and/or decreased Neutrokine-alpha and/or Neutrokine-alpha SV functional activity and/or physical property.
  • site directed changes at the amino acid level of Neutrokine-alpha can be made by replacing a particular amino acid with a conservative substitution.
  • Preferred conservative substitution mutations of the Neutrokine-alpha amino acid sequence provided in SEQ DD NO:38 include: Ml replaced with A, G, I, L, S, T, or V; D2 replaced with E; E3 replaced with D; S4 replaced with A, G, I, L, T, M, or V; A5 replaced with G, I, L, S, T, M, or V; K6 replaced with H, or R; T7 replaced with A, G, I, L, S, M, or V; L8 replaced with A, G, I, S, T, M, or V; L13 replaced with A, G, I, S, T, M, or V; F15 replaced with W, or Y; S17 replaced with A, G, I, L, T, M, or V; El 8 replaced with D; K19 replaced with H, or R; G20 replaced with A
  • G, L, S, T, M, or V Y200 replaced with F, or W; S201 replaced with A, G, I, L, T, M, or V; Q202 replaced with N; V203 replaced with A, G, I, L, S, T, or M; L204 replaced with A, G, I, S, T, M, or V; Y205 replaced with F, or W; T206 replaced with A, G, I, L, S, M, or V; D207 replaced with E; 1209 replaced with A, G, L, S, T, M, or V; F210 replaced with W, or Y; A211 replaced with G, I, L, S, T, M, or V; M212 replaced with A, G, I, L, S, T, or V; G213 replaced with A, I, L, S, T, M, or V; H214 replaced with K, or R; V215 replaced with A, G, I, L, S, T, or M; 1216 replaced with A, G, L, S, T, M, or V
  • the resulting Neutrokine-alpha proteins of the invention may be routinely screened for Neutrokine-alpha and/or Neutrokine-alphaSV functional activity and/or physical properties (such as, for example, enhanced or reduced stability and/or solubility).
  • the resulting proteins of the invention have an increased and/or a decreased Neutrokine-alpha and/or Neutroldne-alphaSV functional activity.
  • the resulting Neutrokine-alpha and/or Neutrokine-alphaSV proteins of the invention have more than one increased and/or decreased Neutrokine-alpha and/or Neutrokine-alpha S V functional activity and/or physical property.
  • Amino acids in the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the present invention that are essential for function can be identified by methods known in the art, such as site-directed mutagenesis or alanine-scanning mutagenesis (Cunningham and Wells, Science 244:1081-1085 (1989)). The latter procedure introduces single alanine mutations at every residue in the molecule.
  • the resulting mutant molecules are then tested for functional activity, such ligand binding and the ability to stimulate lymphocyte (e.g., B cell) as, for example, proliferation, differentiation, and/or activation.
  • lymphocyte e.g., B cell
  • functional activity such ligand binding and the ability to stimulate lymphocyte (e.g., B cell) as, for example, proliferation, differentiation, and/or activation.
  • lymphocyte e.g., B cell
  • lymphocyte e.g., B cell
  • the invention provides for polypeptides having amino acid sequences containing non-conservative substitutions of the amino acid sequence provided in SEQ DD NO:2.
  • non-conservative substitutions of the Neutrokine-alpha protein sequence provided in SEQ ID NO:2 include: Ml replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; D2 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; D3 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; S4 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; T5 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; E6 replaced with H
  • F, W, Y, P, or C C27 replaced with D, E, H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, or P; V28 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; S29 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; 130 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L31 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; P32 replaced with D, E, H, K, R, A,
  • E, H, K, R, N, Q, F, W, Y, P, or C T51 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L52 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L53 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L54 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; A55 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L56 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L57 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; S58 replaced with D, E, H, K, R, N, Q, F, W
  • F, W, Y, P, or C 1114 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; F115 replaced with D, E, H, K, R, N, Q, A, G, I, L, S, T, M, V, P, or C; El 16 replaced with H, K, R, A,
  • E, H, K, R, N, Q, F, W, Y, P, or C L186 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; V187 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; K188 replaced with D, E, A,
  • V217 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; H218 replaced with D, E, A, G, I, L, *S, T, M, V, N, Q, F, W, Y, P, or C; V219 replaced with D,
  • E, H, K, R, N, Q, F, W, Y, P, or C L272 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; D273 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; G274 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; D275 replaced with H, K, R, A, G, I L, S, T, M, V, N, Q, F, W, Y, P, or C; V276 replaced with D, E, H, K, R, N, Q, F, W, Y P, or C; T277 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; F278 replaced with D E, H, K, R, N, Q, A, G, I,
  • the resulting Neutrokine-alpha proteins of the invention may be routinely screened for Neutrokine-alpha and/or Neutroldne-alphaSV functional activities and/or physical properties (such as, for example, enhanced or reduced stability and/or solubility) described throughout the specification and known in the art.
  • the resulting proteins of the invention have an increased and/or a decreased Neutrokine-alpha and/or Neutrokine-alphaSV functional activity.
  • the resulting Neutrokine-alpha and/or Neutrokine-alphaSV proteins of the invention have more than one increased and/or decreased Neutrokine-alpha and/or Neutrokine-alphaSV functional activity and/or physical property.
  • Neutrokine-alpha polypeptides of the invention comprise, or alternatively consist of, more than one amino acid (e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 30 and 50) replaced with the substituted amino acids as described above (either conservative or nonconservative).
  • non-conservative substitutions of the Neutroldne-alphaSV protein sequence provided in SEQ DD NO: 19 include: Ml replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; D2 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; D3 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; S4 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; T5 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; E6 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; E6 replaced with H,
  • F, W, Y, P, or C C27 replaced with D, E, H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, or P; V28 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; S29 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; 130 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L31 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; P32 replaced with D, E, H, K, R, A,
  • E, H, K, R, N, Q, F, W, Y, P, or C T51 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L52 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L53 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L54 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; A55 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L56 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L57 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; S58 replaced with D, E, H, K, R, N, Q, F, W
  • F, W, Y, P, or C 1114 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; F115 replaced with D, E, H, K, R, N, Q, A, G, I, L, S, T, M, V, P, or C; El 16 replaced with H, K, R, A,
  • E, H, K, R, N, Q, F, W, Y, P, or C L151 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; S152 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; F153 replaced with D, E, H, K, R, N, Q, A, G, I, L, S, T, M, V, P, or C; K154 replaced with D, E, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; R155 replaced with D, E, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; G156 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; S157 replaced with D, E, H, K, R, N, Q, F, W,
  • E, H, K, R, N, Q, F, W, Y, P, or C F201 replaced with D, E, H, K, R, N, Q, A, G, I, L, S, T, M, V, P, or C; G202 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; D203 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; E204 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; L205 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; S206 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; L207 replaced with D, E, H, K, R, N, Q,
  • E, H, K, R, N, Q, F, W, Y, P, or C L253 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; D254 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; G255 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; D256 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; V257 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; T258 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; F259 replaced with D, E, H, K, R, N, Q, F, W,
  • the resulting Neutrokine-alpha proteins of the invention may be routinely screened for Neutrokine-alpha and/or Neutroldne-alphaSV functional activities and/or physical properties (such as, for example, enhanced or reduced stability and/or solubility) described throughout the specification and known in the art.
  • the resulting proteins of the invention have an increased and/or a decreased Neutrokine-alpha and/or Neutrokine-alphaSV functional activity.
  • the resulting Neutrokine-alpha and/or Neutrokine-alphaSV proteins of the invention have more than one increased and/or decreased Neutrokine-alpha and/or Neutrokine-alphaSV functional activity and/or physical property.
  • Neutrokine-alpha polypeptides of the invention comprise, or alternatively consist of, more than one amino acid (e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 30 and 50) replaced with the substituted amino acids as described above (either conservative or nonconservative).
  • preferred non-conservative substitutions of the Neutrokine-alpha protein sequence provided in SEQ DD NO:23 include: Rl replaced with D, E, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; V2 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; V3 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; D4 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; L5 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; S6 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; A7 replaced with D, E, H, K, R, N
  • R31 replaced with D, E, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C
  • T32 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C
  • Y33 replaced with D, E, H, K, R, N, Q, A, G, I, L, S, T, M, V, P, or C
  • T34 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C
  • F35 replaced with D, E, H, K, R, N, Q, A, G, I, L, S, T, M, V, P, or C
  • V36 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C
  • P37 replaced with D, E, H, K, R, A, G, I, L, S, T, M, V, N, Q,
  • E, H, K, R, N, Q, F, W, Y, P, or C S41 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C;
  • F42 replaced with D, E, H, K, R, N, Q, A, G, I, L, S, T, M, V, P, or C;
  • K43 replaced with D, E, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C;
  • R44 replaced with D, E, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C;
  • G45 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C;
  • N46 replaced with D, E, H, K, R, A, G, I, L, S, T, M, V, F, W, Y, P, or C;
  • N143 replaced with D, E, H, K, R, A, G, I, L, S, T, M, V, F, W, Y, P, or C
  • G144 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C
  • D145 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C
  • D146 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C
  • T147 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C
  • F148 replaced with D, E, H, K, R, N, Q, A, G, I, L, S, T, M, V, P, or C
  • F149 replaced with D, E, H, K, R, N, Q, A, G, I
  • the resulting Neutrokine-alpha proteins of the invention may be routinely screened for Neutrokine- alpha and/or Neutrokine-alphaSV functional activities and/or physical properties (such as, for example, enhanced or reduced stability and/or solubility) described throughout the specification and known in the art.
  • the resulting proteins of the invention have an increased and/or a decreased Neutrokine-alpha and/or Neutroldne-alphaSV functional activity.
  • Neutrokine-alpha and/or Neutroldne-alphaSV proteins of the invention have more than one increased and/or decreased Neutrokine-alpha and/or Neutrokine-alphaSV functional activity and/or physical property.
  • Neutrokine-alpha polypeptides of the invention comprise, or alternatively consist of, more than one amino acid (e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 30 and 50) replaced with the substituted amino acids as described above (either conservative or nonconservative).
  • preferred non-conservative substitutions of the Neutrokine-alpha protein sequence provided in SEQ DD NO:38 include: Ml replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; D2 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; E3 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; S4 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; A5 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; K6 replaced with D, E, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; T7 replaced
  • D226 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C
  • E227 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C
  • L228 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C
  • S229 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C
  • L230 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C
  • V231 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C
  • T232 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C
  • L233 replaced with D, E,
  • D, E, H, K, R, N, Q, F, W, Y, P, or C D261 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; E262 replaced with H, K, R, A, G, I, L, S, T, M, V, N, Q, F, W, Y, P, or C; 1263 replaced with D, E, H, K, R, N, Q, F, W, Y, P, or C; Q264 replaced with D,
  • the resulting Neutrokine-alpha proteins of the invention may be routinely screened for Neutrokine-alpha and/or Neutroldne-alphaSV functional activities and/or physical properties (such as, for example, enhanced or reduced stability and/or solubility) described throughout the specification and known in the art.
  • the resulting proteins of the invention have an increased and/or a decreased Neutrokine-alpha and/or Neutrokine-alphaSV functional activity.
  • the resulting Neutrokine-alpha and/or Neutrokine-alphaSV proteins of the invention have more than one increased and/or decreased Neutrokine-alpha and/or Neutrokine-alphaSV functional activity and/or physical property.
  • Neutrokine-alpha polypeptides of the invention comprise, or alternatively consist of, more than one amino acid (e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 30 and 50) replaced with the substituted amino acids as described above (either conservative or nonconservative).
  • Replacement of amino acids can also change the selectivity of the binding of a ligand to cell surface receptors.
  • Ostade et al Nature 361:266-268 (1993) describes certain mutations resulting in selective binding of TNF-alpha to only one of the two known types of TNF receptors. Since Neutrokine-alpha and Neutrokine-alphaSV are members of the TNF polypeptide family, mutations similar to those in TNF-alpha are likely to have similar effects in Neutrokine-alpha and/or Neutroldne-alphaSV.
  • Sites that are critical for ligand-receptor binding can also be determined by structural analysis such as crystallization, nuclear magnetic resonance or photoaffinity labeling (Smith et al, I. Mol. Biol. 224:899-904 (1992) and de Vos et al. Science 255:306-312 (1992)).
  • Neutrokine-alpha is a member of the TNF-related protein family, to modulate rather than completely eliminate functional activities (e.g., biological activities) of Neutrokine-alpha, mutations may be made in sequences encoding amino acids in the TNF conserved domain, i.e., in positions Gly-191 through Leu-284 of Figures 1A and IB (SEQ ID NO:2), more preferably in residues within this region which are not conserved in all, most or several members of the TNF family (e.g., TNF-alpha, TNF-beta, LT-beta, and Fas Ligand) (see e.g., Figures 2A, 2B, 2C, and 2D).
  • polypeptides of the present invention include Neutrokine-alpha mutants.
  • Neutrokine-alpha mutants comprise, or alternatively consist of, fragments, variants or derivatives of the full-length or preferably the extracellular domain of the Neutrokine-alpha amino acid sequence shown in Figures 1A and IB (SEQ DD NO:2).
  • Polynucleotides encoding the above Neutrokine-alpha mutants are also encompassed by the invention.
  • Neutrokine-alphaSV is a member of the TNF-related protein family, to modulate rather than completely eliminate functional activities (e.g., biological activities) of Neutrokine-alphaSV, mutations may be made in sequences encoding amino acids in the TNF conserved domain, i.e., in positions Gly-172 through Leu-265 of Figures 5A and 5B (SEQ DD NO: 19), more preferably in residues within this region which are not conserved in all, most or several members of the TNF family (e.g., TNF-alpha, TNF-beta, LT-beta, and Fas Ligand) (see e.g., Figures 2A 2B, 2C and 2D).
  • TNF-alpha, TNF-beta, LT-beta, and Fas Ligand see e.g., Figures 2A 2B, 2C and 2D.
  • Neutroldne-alphaSV mutein By making a specific mutation in Neutroldne-alphaSV in the position where such a conserved amino acid is typically found in related TNFs, the Neutroldne-alphaSV mutein will act as an antagonist, thus possessing activity for example, which inhibits lymphocyte (e.g., B cell) proliferation, differentiation, and/or activation. Accordingly, polypeptides of the present invention include Neutrokine-alphaSV mutants.
  • Neutroldne-alphaSV mutants comprise, or alternatively consist of, fragments, variants or derivatives of the full-length or preferably the extracellular domain of the Neutrokine-alphaSV amino acid sequence shown in Figures 5 and 5B (SEQ DD NO: 19 Polynucleotides encoding the above Neutrokine-alpha SV mutants are also encompassed by the invention.
  • a partial, non-limiting and non-exclusive list of such residues of the Neutrokine-alpha polypeptide sequence which may be targeted for mutation includes the following amino acid residues of the Neutrokine-alpha polypeptide sequence as shown in SEQ DD NO:2: V-142; T-143; Q-144; D-145; C-146; L-147; Q-148; L-149; 1-150; A-151; D-152; S-153; E-154; T-155; P-156; T-157; 1-158; Q-159; and K-160.
  • Recombinant DNA technology known to those skilled in the art (see, for instance, DNA shuffling supra) can be used to create novel mutant proteins or muteins including single or multiple amino acid substitutions, deletions, additions or fusion proteins.
  • modified polypeptides can show, e.g., enhanced activity or increased stability.
  • they may be purified in higher yields and show better solubility than the corresponding natural polypeptide, at least under certain purification and storage conditions.
  • the invention also encompasses Neutrokine-alpha and/or Neutroldne-alphaSV derivatives and analogs that have one or more amino acid residues deleted, added, or substituted to generate Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides that are better suited for expression, scale up, etc., in the host cells chosen.
  • cysteine residues can be deleted or substituted with another amino acid residue in order to eliminate disulfide bridges;
  • N-linked glycosylation sites can be altered or eliminated to achieve, for example, expression of a homogeneous product that is more easily recovered and purified from yeast hosts which are known to hyperglycosylate N- linked sites.
  • mutation of the serine at position 244 to alanine either singly or in combination with mutation of the asparagine at position 242 to glutamine abolishes glycosylation of the mature soluble form of Neutrokine-alpha (amino acids 134- 285) of SEQ DD NO:2) when expressed in the yeast Pichea pastoris.
  • the glycosylation event may be due to the activation or unmasking of an O-linked glyscosylation site at serine 244.
  • Similar mutations affecting glycosylation could also be made in Neutrokine alpha-SV polypeptide, i.e., aspargine-223 to glutamine and/or serine- 224 to alanine of SEQ DD NO: 19.
  • amino acid residues of the polypeptides of the invention may be deleted or substituted with another residue to elminate undesired processing by proteases such as, for example, furins or kexins.
  • proteases such as, for example, furins or kexins.
  • Lys-132 and/or Arg-133 of the Neutrokine-alpha sequence shown in SEQ DD NO:2 is mutated to another amino acid residue, or deleted altogether, to prevent or diminish release of the soluble form of Neutrokine-alpha from cells expressing Neutrokine-alpha.
  • Lys-132 of the Neutrokine-alpha sequence shown in SEQ DD NO:2 is mutated to Ala-132.
  • Arg-133 of the Neutrokine-alpha sequence shown in SEQ DD NO:2 is mutated to Ala-133.
  • mutatied proteins, and/or polynucleotides encoding these proteins have uses such as, for example, in ex vivo therapy or gene therapy, to engineer cells expressing a Neutrokine-alpha polypepitde that is retained on the surface of the engineered cells.
  • Cys-146 of the Neutroldne-alpha sequence shown in SEQ DD NO:2 is mutated to another amino acid residue, or deleted altogether, for example, to aid preventing or diminishing oligomerization of the mutant Neutrokine-alpha polypeptide when expressed in an expression system (essentially as described in Example 1).
  • Cys-146 is replaced with a serine amino acid residue.
  • Cys-232 of the Neutrokine-alpha sequence shown in SEQ DD NO:2 is mutated to another amino acid residue, or deleted altogether, for example, to aid preventing or diminishing oligomerization of the mutant Neutrokine- alpha polypeptide when expressed in an expression system (essentially as described in Example 1).
  • Cys-232 is replaced with a serine amino acid residue.
  • Polynucleotides encoding these polypeptides are also encompassed by the invention.
  • Cys-245 of the Neutrokine-alpha sequence shown in SEQ DD NO:2 is mutated to another amino acid residue, or deleted altogether, for example, to aid preventing or diminishing oligomerization of the mutant Neutrokine- alpha polypeptide when expressed in an expression system (essentially as described in Example 1).
  • Cys-245 is replaced with a serine amino acid residue.
  • Polynucleotides encoding these polypeptides are also encompassed by the invention.
  • the polypeptides of the present invention are preferably provided in an isolated form, and preferably are substantially purified.
  • a recombinantly produced version of the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides can be substantially purified by the one-step method described in Smith and Johnson, Gene 67:31-40 (1988).
  • the polypeptides of the present invention include the complete polypeptide encoded by the deposited cDNA (ATCC Deposit No.
  • polypeptides of the present invention also include the complete polypeptide encoded by the deposited cDNA including the intracellular, transmembrane and extracellular domains of the polypeptide encoded by the deposited cDNA (ATCC Deposit No.
  • the mature soluble polypeptide encoded by the deposited cDNA the extracellular domain minus the intracellular and transmembrane domains of the protein, the complete polypeptide of Figures 5 A and 5B (amino acid residues 1-266 of SEQ ID NO: 19), the mature soluble polypeptide of Figures 5 A and 5B (amino acid residues 134-266 of SEQ DD NO: 19), the extracellular domain of Figures 5 A and 5B (amino acid residues 73-266 of SEQ DD NO: 19) minus the intracellular and transmembrane domains, as well as polypeptides which have at least 80%, 85%, 90% similarity, more preferably at least 95% similarity, and still more preferably at least 96%, 97%, 98% or 99% similarity to those described above. Polynucleotides encoding these polypeptides are also encompassed by the invention.
  • polypeptides of the present invention include polypeptides at least 80%, or at least 85% identical, more preferably at least 90% or 95% identical, still more preferably at least 96%, 97%, 98% or 99% identical to the polypeptide encoded by the deposited cDNA (ATCC Deposit No. 97768) or to the polypeptide of Figures 1 A and IB (SEQ DD NO:2), and also include portions of such polypeptides with at least 30 amino acids and more preferably at least 50 amino acids. Polynucleotides encoding these polypeptides are also encompassed by the invention.
  • polypeptides of the present invention include polypeptides at least 80%, or at least 85% identical, more preferably at least 90% or 95% identical, still more preferably at least 96%, 97%, 98% or 99% identical to the polypeptide encoded by the deposited cDNA (ATCC Deposit No. 203518) or to the polypeptide of Figures 5 A and 5B (SEQ DD NO: 19), and also include portions of such polypeptides with at least 30 amino acids and more preferably at least 50 amino acids. Polynucleotides encoding these polypeptides are also encompassed by the invention.
  • % similarity for two polypeptides is intended a similarity score produced by comparing the amino acid sequences of the two polypeptides using the Bestfit program (Wisconsin Sequence Analysis Package, Version 8 for Unix, Genetics Computer Group, University Research Park, 575 Science Drive, Madison, WI 53711) and the default settings for determining similarity. Bestfit uses the local homology algorithm of Smith and Waterman (Advances in Applied Mathematics 2:482-489, 1981) to find the best segment of similarity between two sequences.
  • polypeptide having an amino acid sequence at least, for example, 95% "identical" to a reference amino acid sequence of a Neutrokine-alpha and/or Neutroldne-alphaSV polypeptide is intended that the amino acid sequence of the polypeptide is identical to the reference sequence except that the polypeptide sequence may include up to five amino acid alterations per each 100 amino acids of the reference amino acid of the Neutrokine-alpha and/or Neutrokine-alphaSV polypeptide.
  • a polypeptide having an amino acid sequence at least 95% identical to a reference amino acid sequence up to 5% of the amino acid residues in the reference sequence may be deleted or substituted with another amino acid, or a number of amino acids up to 5% of the total amino acid residues in the reference sequence may be inserted into the reference sequence.
  • These alterations of the reference sequence may occur at the amino or carboxy terminal positions of the reference amino acid sequence or anywhere between those terminal positions, interspersed either individually among residues in the reference sequence or in one or more contiguous groups within the reference sequence.
  • any particular polypeptide is at least 80%, 85%, 90%, 95%, 96%, 97%, 98% or 99% identical to, for instance, the amino acid sequence shown in Figures 1A and IB (SEQ DD NO:2), the amino acid sequence encoded by the deposited cDNA clone HNEDU15 (ATCC Accession No. 97768), or fragments thereof, or, for instance, to the amino acid sequence shown in Figures 5A and 5B (SEQ DD NO: 19), the amino acid sequence encoded by the deposited cDNA clone HDPMC52 (ATCC Accession No.
  • the identity between a reference (query) sequence (a sequence of the present invention) and a subject sequence is determined using the FASTDB computer program based on the algorithm of Brutlag et al. (Comp. App. Biosci. 6:237-245 (1990)).
  • the percent identity is corrected by calculating the number of residues of the query sequence that are N- and C-terminal of the subject sequence, which are not matched/aligned with a corresponding subject residue, as a percent of the total bases of the query sequence.
  • a determination of whether a residue is matched/aligned is determined by results of the FASTDB sequence alignment. This percentage is then subtracted from the percent identity, calculated by the above FASTDB program using the specified parameters, to arrive at a final percent identity score. This final percent identity score is what is used for the pu ⁇ oses of this embodiment.
  • the 10 unpaired residues represent 10% of the sequence (number of residues at the N- and C-termini not matched/total number of residues in the query sequence) so 10% is subtracted from the percent identity score calculated by the FASTDB program. If the remaining 90 residues were perfectly matched the final percent identity would be 90%.
  • a 90 residue subject sequence is compared with a 100 residue query sequence. This time the deletions are internal deletions so there are no residues at the N- or C-termini of the subject sequence which are not matched/aligned with the query. In this case the percent identity calculated by FASTDB is not manually corrected.
  • polypeptides of the present invention have uses that include, but are not limited to, as a molecular weight marker on SDS-PAGE gels or on molecular sieve gel filtration columns using methods well known to those skilled in the art.
  • polypeptides of the present invention have uses that include, but are not limited to, raising polyclonal and monoclonal antibodies, which are useful in assays for detecting Neutrokine-alpha and/or Neutroldne-alphaSV polypeptide expression as described below or as agonists and antagonists capable of enhancing or inhibiting Neutrokine-alpha and/or Neutrokine-alphaSV function.
  • the polypeptides of the invention also have therapeutic uses as described herein.
  • polypeptides can be used in the yeast two-hybrid system to "capture" Neutrokine-alpha and/or Neutrokine-alphaSV binding proteins which are also candidate agonists and antagonists according to the present invention.
  • the yeast two hybrid system is described in Fields and Song, Nature 340:245-246 (1989).
  • polypeptides of the invention can also be expressed in transgenic animals.
  • Animals of any species including, but not limited to, mice, rats, rabbits, hamsters, guinea pigs, pigs, micro-pigs, goats, sheep, cows and non-human primates, e.g., baboons, monkeys, and chimpanzees may be used to generate transgenic animals.
  • techniques described herein or otherwise known in the art are used to express polypeptides of the invention in humans, as part of a gene therapy protocol.
  • transgene i.e., polynucleotides of the invention
  • transgene i.e., polynucleotides of the invention
  • Such techniques include, but are not limited to, pronuclear microinjection (Paterson, et al, Appl Microbiol Biotechnol. 40:691-698 (1994); Carver et al., Biotechnology (NY) 11:1263-1270 (1993); Wright et al., Biotechnology (NY) 9:830-834 (1991); and Hoppe et al, U.S. Pat. No. 4,873,191 (1989)); retrovirus mediated gene transfer into germ lines (Van der Putten et al., Proc. Natl.
  • transgenic clones containing polynucleotides of the invention for example, nuclear transfer into enucleated oocytes of nuclei from cultured embryonic, fetal, or adult cells induced to quiescence (Campell et al., Nature 380:64-66 (1996); Wilmut et al., Nature 385:810-813 (1997)).
  • the present invention provides for transgenic animals that carry the transgene in all their cells, as well as animals which carry the transgene in some, but not all their cells, i.e., mosaic or chimeric animals.
  • the transgene may be integrated as a single transgene or as multiple copies such as in concatamers, e.g., head-to-head tandems or head-to-tail tandems.
  • the transgene may also be selectively introduced into and activated in a particular cell type by following, for example, the teaching of Lasko et al. (Lasko et al., Proc. Natl. Acad. Sci. USA 89:6232-6236 (1992)).
  • the regulatory sequences required for such a cell-type specific activation will depend upon the particular cell type of interest, and will be apparent to those of skill in the art.
  • the polynucleotide transgene be integrated into the chromosomal site of the endogenous gene
  • gene targeting is preferred.
  • vectors containing some nucleotide sequences homologous to the endogenous gene are designed for the pu ⁇ ose of integrating, via homologous recombination with chromosomal sequences, into and disrupting the function of the nucleotide sequence of the endogenous gene.
  • the transgene may also be selectively introduced into a particular cell type, thus inactivating the endogenous gene in only that cell type, by following, for example, the teaching of Gu et al. (Gu et al., Science 265:103-106 (1994)).
  • the expression of the recombinant gene may be assayed utilizing standard techniques. Initial screening may be accomplished by Southern blot analysis or PCR techniques to analyze animal tissues to verify that integration of the transgene has taken place. The level of mRNA expression of the transgene in the tissues of the transgenic animals may also be assessed using techniques which include, but are not limited to, Northern blot analysis of tissue samples obtained from the animal, in situ hybridization analysis, reverse transcriptase-PCR (rt- PCR); and TaqMan PCR. Samples of transgenic gene-expressing tissue may also be evaluated immunocytochemically or immunohistochemically using antibodies specific for the transgene product.
  • founder animals may be bred, inbred, outbred, or crossbred to produce colonies of the particular animal.
  • breeding strategies include, but are not limited to: outbreeding of founder animals with more than one integration site in order to establish separate lines; inbreeding of separate lines in order to produce compound transgenics that express the transgene at higher levels because of the effects of additive expression of each transgene; crossing of heterozygous transgenic animals to produce animals homozygous for a given integration site in order to both augment expression and eliminate the need for screening of animals by DNA analysis; crossing of separate homozygous lines to produce compound heterozygous or homozygous lines; breeding to place the transgene on a distinct background that is appropriate for an experimental model of interest; and breeding of transgenic animals to other animals bearing a distinct transgene or knockout mutation.
  • Transgenic and "knock-out" animals of the invention have uses which include, but are not limited to, animal model systems useful in elaborating the biological function of Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides, studying conditions and/or disorders associated with aberrant Neutrokine-alpha and/or Neutrokine-alphaSV expression, and in screening for compounds effective in ameliorating such conditions and/or disorders.
  • cells that are genetically engineered to express the polypeptides of the invention, or alternatively, that are genetically engineered not to express the polypeptides of the invention are administered to a patient in vivo.
  • Such cells may be obtained from the patient (i.e., animal, including human) or an MHC compatible donor and can include, but are not limited to fibroblasts, bone marrow cells, blood cells (e.g., lymphocytes), adipocytes, muscle cells, endothelial cells etc.
  • the cells are genetically engineered in vitro using recombinant DNA techniques to introduce the coding sequence of polypeptides of the invention into the cells, or alternatively, to disrupt the coding sequence and/or endogenous regulatory sequence associated with the polypeptides of the invention, e.g., by ⁇ transduction (using viral vectors, and preferably vectors that integrate the transgene into the cell genome) or transfection procedures, including, but not limited to, the use of plasmids, cosmids, YACs, naked DNA, electroporation, liposomes, etc.
  • ⁇ transduction using viral vectors, and preferably vectors that integrate the transgene into the cell genome
  • transfection procedures including, but not limited to, the use of plasmids, cosmids, YACs, naked DNA, electroporation, liposomes, etc.
  • the coding sequence of the polypeptides of the invention can be placed under the control of a strong constitutive or inducible promoter or promoter/enhancer to achieve expression, and preferably secretion, of the polypeptides of the invention.
  • the engineered cells which express and preferably secrete the polypeptides of the invention can be introduced into the patient systemically, e.g., in the circulation, or intraperitoneally.
  • the cells can be inco ⁇ orated into a matrix and implanted in the body, e.g., genetically engineered fibroblasts can be implanted as part of a sldn graft; genetically engineered endothelial cells can be implanted as part of a lymphatic or vascular graft.
  • genetically engineered fibroblasts can be implanted as part of a sldn graft
  • genetically engineered endothelial cells can be implanted as part of a lymphatic or vascular graft.
  • the cells to be administered are non-autologous or non-MHC compatible cells, they can be administered using well known techniques which prevent the development of a host immune response against the introduced cells.
  • the cells may be introduced in an encapsulated form which, while allowing for an exchange of components with the immediate extracellular environment, does not allow the introduced cells to be recognized by the host immune system.
  • polypeptides of the invention relate to antibodies and T-cell antigen receptors (TCR) which immunospecifically bind a polypeptide, polypeptide fragment, or variant of SEQ DD NO:2 and/or SEQ DD NO: 19, and/or an epitope, of the present invention (as determined by immunoassays well known in the art for assaying specific antibody-antigen binding).
  • TCR T-cell antigen receptors
  • antibodies of the invention bind homomeric, especially homotrimeric, Neutrokine-alpha polypeptides.
  • antibodies of the invention bind heteromeric, especially heterotrimeric, Neutrokine-alpha polypeptides such as a heterotrimer containing two Neutrokine-alpha polypeptides and one APRIL polypeptide (e.g., SEQ DD NO:20 or SEQ DD NO:47) or a heterotrimer containing one Neutrokine-alpha polypeptide and two APRIL polypeptides.
  • heteromeric, especially heterotrimeric, Neutrokine-alpha polypeptides such as a heterotrimer containing two Neutrokine-alpha polypeptides and one APRIL polypeptide (e.g., SEQ DD NO:20 or SEQ DD NO:47) or a heterotrimer containing one Neutrokine-alpha polypeptide and two APRIL polypeptides.
  • the antibodies of the invention bind homomeric, especially homotrimeric, Neutrokine-alpha polypeptides, wherein the individual protein components of the multimers consist of the mature form of Neutrokine alpha (e.g., amino acids residues 134-285 of SEQ ID NO:2, or amino acids residuess 134- 266 of SEQ DD NO: 19.)
  • antibodies of the invention bind heteromeric, especially heterotrimeric, Neutrokine-alpha polypeptides such as a heterotrimer containing two Neutrokine-alpha polypeptides and one APRIL polypeptide or a heterotrimer containing one Neutrokine-alpha polypeptide and two APRIL polypeptides, and wherein the individulal protein components of the Neutrokine-alpha heteromer consist of the mature extracellular soluble portion of either Neutrokine-alpha or (e.g., amino acids residues 134-285 of SEQ ID NO:
  • the antibodies of the invention bind conformational epitopes of a Neutrokine-alpha and/or Neutrokine-alphaSV monomeric protein. In specific embodiments, the antibodies of the invention bind conformational epitopes of a Neutroldne-alpha and/or Neutrokine-alphaSV multimeric, especially trimeric, protein.
  • antibodies of the invention bind conformational epitopes that arise from the juxtaposition of Neutrokine-alpha and/or Neutrokine alpha SV with a heterologous polypeptide, such as might be present when Neutrokine-alpha or Neutrokine- alpha SV forms heterotrimers (e.g., with APRIL polypeptides (e.g., SEQ DD NO:20 or SEQ DD NO:47)), or in fusion proteins between Neutrokine alpha and a heterologous polypeptide.
  • APRIL polypeptides e.g., SEQ DD NO:20 or SEQ DD NO:47
  • Antibodies of the invention include, but are not limited to, polyclonal, monoclonal, multispecific, human, humanized or chimeric antibodies, single chain antibodies, Fab fragments, F(ab') fragments, fragments produced by a Fab expression library, anti-idiotypic (anti-Id) antibodies (including, e.g., anti-id antibodies to antibodies of the invention), and epitope-binding fragments of any of the above.
  • antibody refers to immunoglobulin molecules and immunologically active portions of immunoglobulin molecules, i.e., molecules that contain an antigen binding site that immunospecifically binds an antigen.
  • the immunoglobulin molecules of the invention can be of any type (e.g., IgG, IgE, IgM, IgD, IgA and IgY), class (e.g., IgGl, IgG2, IgG3, IgG4, IgAl and IgA2) or subclass of immunoglobulin molecule. .
  • the immunoglobulin is an IgGl or an IgG4 isotype.
  • Immunoglobulins may have both a heavy and light chain.
  • An array of IgG, IgE, IgM, IgD, IgA, and IgY heavy chains may be paired with a light chain of the kappa or lambda forms.
  • the antibodies are human antigen-binding antibody fragments of the present invention and include, but are not limited to, Fab, Fab' and F(ab')2, Fd, single-chain Fvs (scFv), single-chain antibodies, disulfide-linked Fvs (sdFv) and fragments comprising either a VL or VH domain.
  • Antigen-binding antibody fragments, including single-chain antibodies may comprise the variable region(s) alone or in combination with the entirety or a portion of the following: hinge region, CHI, CH2, and CH3 domains. Also included in the invention are antigen-binding fragments also comprising any combination of variable region(s) with a hinge region, CHI, CH2, and CH3 domains.
  • the antibodies of the invention may be from any animal origin including birds and mammals.
  • the antibodies are human, murine (e.g., mouse and rat), donkey, ship rabbit, goat, guinea pig, camel, horse, or chicken.
  • "human” antibodies include antibodies having the amino acid sequence of a human immunoglobulin and include antibodies isolated from human immunoglobulin libraries or from animals transgenic for one or more human immunoglobulin and that do not express endogenous immunoglobulins, as described infra and, for example in, U.S. Patent No. 5,939,598 by Kucherlapati et al.
  • the antibodies of the present invention may be monospecific, bispecific, trispecific or of greater multispecificity. Multispecific antibodies may be specific for different epitopes of a polypeptide of the present invention or may be specific for both a polypeptide of the present invention as well as for a heterologous epitope, such as a heterologous polypeptide or solid support material. See, e.g., PCT publications WO 93/17715; WO 92/08802; WO91/00360; WO 92/05793; Tutt, et al., J. Immunol. 147:60- 69 (1991); U.S. Patent Nos. 4,474,893; 4,714,681; 4,925,648; 5,573,920; 5,601,819; Kostelny et al, J. Immunol. 148:1547-1553 (1992).
  • Antibodies of the present invention may be described or specified in terms of the epitope(s) or portion(s) of a polypeptide of the present invention which they recognize or specifically bind.
  • the epitope(s) or polypeptide portion(s) may be specified as described herein, e.g., by N-terminal and C-terminal positions, by size in contiguous amino acid residues, or listed in the Tables and Figures.
  • Antibodies which specifically bind any epitope or polypeptide of the present invention may also be excluded. Therefore, the present invention includes antibodies that specifically bind polypeptides of the present invention, and allows for the exclusion of the same.
  • antibodies of the invention bind to polypeptides comprising Phe-115 to Leu-147, Ile-150 to Tyr-163, Ser-171 to Phe-194, Glu-223 to Tyr-246, and Ser-271 to Phe-278 of the amino acid sequence of SEQ DD NO:2.
  • antibodies of the invention bind to polypeptides consisting of Phe-115 to Leu-147, Ile-150 to Tyr-163, Ser-171 to Phe-194, Glu-223 to Tyr-246, and Ser-271 to Phe-278 of the amino acid sequence of SEQ ID NO: 2.
  • antibodies of the invention bind to a polypeptide comprising Glu-223 to Tyr- 246 of SEQ DD NO:2.
  • antibodies of the invention bind to a polypeptide consisting of Glu-223 to Tyr-246 of SEQ DD NO:2. In a more preferred embodiment, antibodies of the invention bind to a polypeptide consisting of Phe-230 to Asn-242 of SEQ DD NO:2. In further preferred, nonexclusive embodiments, the antibodies of the invention inhibit one or more biological activities of Neutrokine-alpha and/or Neutrokine-alphaSV polypeptides of the invention through specific binding. In more preferred embodiments, the antibody of the invention inhibits Neutrokine-alpha- and/or Neutrokine-alphaSV-mediated B cell proliferation.
  • Antibodies of the present invention may also be described or specified in terms of their cross-reactivity. Antibodies that do not bind any other analog, ortholog, or homolog of a polypeptide of the present invention are included. Antibodies that bind polypeptides with at least 95%, at least 90%, at least 85%, at least 80%, at least 75%, at least 70%, at least 65%, at least 60%, at least 55%, and at least 50% identity (as calculated using methods known in the art and described herein) to a polypeptide of the present invention are also included in the present invention.
  • antibodies of the present invention cross react with APRIL (e.g., SEQ DD NO:20 or SEQ ID NO:47; PCT International Publication Number WO97/33902; GenBank Accession No. AF046888 (nucleotide) and AAC6132 (protein); J. Exp. Med. 188(6):1185-1190).
  • APRIL e.g., SEQ DD NO:20 or SEQ ID NO:47; PCT International Publication Number WO97/33902; GenBank Accession No. AF046888 (nucleotide) and AAC6132 (protein); J. Exp. Med. 188(6):1185-1190.
  • antibodies of the present invention cross-react with murine, rat and/or rabbit homologs of human proteins and the corresponding epitopes thereof.
  • Antibodies that do not bind polypeptides with less than 95%, less than 90%, less than 85%, less than 80%, less than 75%, less than 70%, less than 65%, less than 60%, less than 55%, and less than 50% identity (as calculated using methods known in the art and described herein) to a polypeptide of the present invention are also included in the present invention.
  • the above-described cross-reactivity is with respect to any single specific antigenic or immunogenic polypeptide, or combination(s) of 2, 3, 4, 5, or more of the specific antigenic and/or immunogenic polypeptides disclosed herein.
  • antibodies which bind polypeptides encoded by polynucleotides which hybridize to a polynucleotide of the present invention under hybridization conditions are also included in the present invention.
  • antibodies of the invention bind Neutrokine-alpha and/or Neutokine-alphaSV polypeptides, or fragments or variants thereof, with a dissociation constant or K D of less than or equal to 5 X IO "2 M, IO "2 M, 5 X IO “3 M, IO “3 M, 5 X IO “4 M, IO “4 M, 5 X 10 "5 M, or IO "5 M.
  • antibodies of the invention bind Neutrokine-alpha and/or Neutokine-alphaSV polypeptides or fragments or variants thereof with a dissociation constant or D less than or equal to 5 X IO "6 M, IO “6 M, 5 X 10 " 7 M, IO “7 M, 5 X 10 "8 M, or 10 "8 M.
  • antibodies of the invention bind Neutrokine-alpha and/or Neutokine-alphaSV polypeptides or fragments or variants thereof with a dissociation constant or Kp less than or equal to 5 X IO "9 M, IO “9 M, 5 X 10 " 10 M, 10 "10 M, 5 X 10 " ⁇ M, IO "11 M, 5 X IO "12 M, IO “12 M, 5 X “13 M, IO “13 M, 5 X 10 "14 M, IO “14 M, 5 X IO “15 M, or 10 "15 M.
  • the invention encompasses antibodies that bind Neutrokine-alpha and/or Neutokine-alphaSV polypeptides with a dissociation constant or Kp that is within any one of the ranges that are between each of the individual recited values.
  • the invention also provides antibodies that competitively inhibit binding of an antibody to an epitope of the invention as determined by any method known in the art for determining competitive binding, for example, the immunoassays described herein.
  • the antibody competitively inhibits binding to the epitope by at least 95%o, at least 90%, at least 85 %, at least 80%, at least 75%, at least 70%), at least 60%, or at least 50%.
  • Antibodies of the present invention may act as agonists or antagonists of the polypeptides of the present invention.
  • the present invention includes antibodies which disrupt the receptor/ligand interactions with the polypeptides of the invention either partially or fully.
  • antibodies of the present invention bind an antigenic epitope disclosed herein, or a portion thereof.
  • the invention features both receptor-specific antibodies and ligand-specific antibodies.
  • the invention also features receptor-specific antibodies which do not prevent ligand binding but prevent receptor activation. Receptor activation (i.e., signaling) may be determined by techniques described herein or otherwise known in the art.
  • receptor activation can be determined by detecting the phosphorylation (e.g., tyrosine or serine/threonine) of the receptor or its substrate by immunoprecipitation followed by western blot analysis (for example, as described supra).
  • phosphorylation e.g., tyrosine or serine/threonine
  • antibodies are provided that inhibit ligand activity or receptor activity by at least 95%, at least 90%, at least 85%, at least 80%, at least 75%, at least 70%, at least 60%, or at least 50% of the activity in absence of the antibody.
  • the invention also features receptor-specific antibodies which both prevent ligand binding and receptor activation as well as antibodies that recognize the receptor- ligand complex, and, preferably, do not specifically recognize the unbound receptor or the unbound ligand.
  • receptor-specific antibodies which both prevent ligand binding and receptor activation as well as antibodies that recognize the receptor- ligand complex, and, preferably, do not specifically recognize the unbound receptor or the unbound ligand.
  • neutralizing antibodies which bind the ligand and prevent binding of the ligand to the receptor, as well as antibodies which bind the ligand, thereby preventing receptor activation, but do not prevent the ligand from binding the receptor.
  • antibodies which activate the receptor are also act as receptor agonists, i.e., potentiate or activate either all or a subset of the biological activities of the ligand-mediated receptor activation, for example, by inducing dimerization of the receptor.
  • the antibodies may be specified as agonists, antagonists or inverse agonists for biological activities comprising the specific biological activities of the peptides of the invention disclosed herein.
  • the above antibody agonists can be made using methods known in the art. See, e.g., PCT publication WO 96/40281; U.S. Patent No. 5,811,097; Deng et al., Blood 92(6)1981-1988 (1998); Chen et al., Cancer Res. 58(16):3668-3678 (1998); Harrop et al., J. Immunol. 161(4): 1786-1794 (1998); Zhu et al., Cancer Res. 58(15):3209-3214 (1998); Yoon et al., J.
  • Antibodies of the present invention may be used, for example, but not limited to, to purify, detect, and target the polypeptides of the present invention, including both in vitro and in vivo diagnostic and therapeutic methods.
  • the antibodies have use in immunoassays for qualitatively and quantitatively measuring levels of the polypeptides of the present invention in biological samples. See, e.g., Harlow et al., Antibodies: A Laboratory Manual, (Cold Spring Harbor Laboratory Press, 2nd ed. 1988) (inco ⁇ orated by reference herein in its entirety).
  • the antibodies of the present invention may be used either alone or in combination with other compositions.
  • the antibodies may further be recombinantly fused to a heterologous polypeptide at the N- or C-terminus or chemically conjugated (including covalently and non-covalently conjugations) to polypeptides or other compositions.
  • antibodies of the present invention may be recombinantly fused or conjugated to molecules useful as labels in detection assays and effector molecules such as heterologous polypeptides, drugs, radionuclides, or toxins. See, e.g., PCT publications WO 92/08495; WO 91/14438; WO 89/12624; U.S. Patent No. 5,314,995; and EP 396,387.
  • the antibodies of the invention include derivatives that are modified, i.e, by the covalent attachment of any type of molecule to the antibody such that covalent attachment does not prevent the antibody from generating an anti-idiotypic response.
  • the antibody derivatives include antibodies that have been modified, e.g., by glycosylation, acetylation, pegylation, phosphylation, amidation, derivatization by known protecting/blocking groups, proteolytic cleavage, linkage to a cellular ligand or other protein, etc. Any of numerous chemical modifications may be carried out by known techniques, including, but not limited to specific chemical cleavage, acetylation, formylation, metabolic synthesis of tunicamycin, etc. Additionally, the derivative may contain one or more non-classical amino acids.
  • the antibodies of the present invention may be generated by any suitable method known in the art.
  • Polyclonal antibodies to an antigen-of-interest can be produced by various procedures well known in the art.
  • a polypeptide of the invention can be administered to various host animals including, but not limited to, rabbits, mice, rats, etc. to induce the production of sera containing polyclonal antibodies specific for the antigen.
  • adjuvants may be used to increase the immunological response, depending on the host species, and include but are not limited to, Freund's (complete and incomplete), mineral gels such as aluminum hydroxide, surface active substances such as lysolecithin, pluronic polyols, polyanions, peptides, oil emulsions, keyhole limpet hemocyanins, dinitrophenol, and potentially useful human adjuvants such as BCG (bacille Calmette-Guerin) and corynebacterium parvum. Such adjuvants are also well known in the art.
  • Monoclonal antibodies can be prepared using a wide variety of techniques known in the art including the use of hybridoma, recombinant, and phage display technologies, or a combination thereof.
  • monoclonal antibodies can be produced using hybridoma techniques including those known in the art and taught, for example, in Harlow et al., Antibodies: A Laboratory Manual, (Cold Spring Harbor Laboratory Press, 2nd ed. 1988); Hammerling, et al., in: Monoclonal Antibodies and T- Cell Hybridomas 563-681 (Elsevier, N.Y., 1981) (said references inco ⁇ orated by reference in their entireties).
  • the term “monoclonal antibody” as used herein is not limited to antibodies produced through hybridoma technology.
  • the term “monoclonal antibody” refers to an antibody that is derived from a single clone, including any eukaryotic, prokaryotic, or phage clone, and not the method by which it is produced.
  • a “monoclonal antibody” may comprise, or alternatively consist of, two proteins, i.e., a heavy and a light chain.
  • mice can be immunized with a polypeptide of the invention or a cell expressing such peptide.
  • an immune response e.g., antibodies specific for the antigen are detected in the mouse serum
  • the mouse spleen is harvested and splenocytes isolated.
  • the splenocytes are then fused by well-known techniques to any suitable myeloma cells, for example cells from cell line SP20 available from the ATCC.
  • Hybridomas are selected and cloned by limited dilution.
  • hybridoma clones are then assayed by methods known in the art for cells that secrete antibodies capable of binding a polypeptide of the invention.
  • Ascites fluid which generally contains high levels of antibodies, can be generated by immunizing mice with positive hybridoma clones.
  • the present invention provides methods of generating monoclonal antibodies as well as antibodies produced by the method comprising culturing a hybridoma cell secreting an antibody of the invention wherein, preferably, the hybridoma is generated by fusing splenocytes isolated from a mouse immunized with an antigen of the invention with myeloma cells and then screening the hybridomas resulting from the fusion for hybridoma clones that secrete an antibody able to bind a polypeptide of the invention.
  • Antibody fragments which recognize specific epitopes may be generated by known techniques.
  • Fab and F(ab')2 fragments of the invention may be produced by proteolytic cleavage of immunoglobulin molecules, using enzymes such as papain (to produce Fab fragments) or pepsin (to produce F(ab')2 fragments).
  • F(ab')2 fragments contain the variable region, the light chain constant region and the CHI domain of the heavy chain.
  • the antibodies of the present invention can also be generated using various phage display methods known in the art.
  • phage display methods functional antibody domains are displayed on the surface of phage particles which carry the polynucleotide sequences encoding them.
  • phage can be utilized to display antigen-binding domains expressed from a repertoire or combinatorial antibody library (e.g., human or murine).
  • Phage expressing an antigen binding domain that binds the antigen of interest can be selected or identified with antigen, e.g., using labeled antigen or antigen bound or captured to a solid surface or bead.
  • Phage used in these methods are typically filamentous phage including fd and Ml 3 binding domains expressed from phage with Fab, Fv or disulfide stabilized Fv antibody domains recombinantly fused to either the phage gene III or gene VIXI protein.
  • Examples of phage display methods that can be used to make the antibodies of the present invention include those disclosed in Brinkman et al., J. Immunol. Methods 182:41-50 (1995); Ames et al., J. Immunol. Methods 184:177-186 (1995); Kettleborough et al., Eur. J. Immunol.
  • a chimeric antibody is a molecule in which different portions of the antibody are derived from different animal species, such as antibodies having a variable region derived from a murine monoclonal antibody and a human immunoglobulin constant region.
  • Methods for producing chimeric antibodies are known in the art. See e.g., Morrison, Science 229:1202 (1985); Oi et al., BioTechniques 4:214 (1986); Gillies et al., (1989) J. Immunol. Methods 125:191-202; U.S. Patent Nos. 5,807,715; 4,816,567; and 4,816397, which are inco ⁇ orated herein by reference in their entirety.
  • Humanized antibodies are antibody molecules from non-human species antibody that binds the desired antigen having one or more complementarity determining regions (CDRs) from the non-human species and a framework region from a human immunoglobulin molecule.
  • CDRs complementarity determining regions
  • framework residues in the human framework regions will be substituted with the corresponding residue from the CDR donor antibody to alter, preferably improve, antigen binding.
  • These framework substitutions are identified by methods well known in the art, e.g., by modeling of the interactions of the CDR and framework residues to identify framework residues important for antigen binding and sequence comparison to identify unusual framework residues at particular positions. (See, e.g., Queen et al., U.S. Patent No.
  • Antibodies can be humanized using a variety of techniques known in the art including, for example, CDR- grafting (EP 239,400; PCT publication WO 91/09967; U.S. Patent Nos. 5,225,539; 5,530,101; and 5,585,089), veneering or resurfacing (EP 592,106; EP 519,596; Padlan, Molecular Immunology 28(4/5):489-498 (1991); Studnicka et al, Protein Engineering 7(6):805-814 (1994); Roguska. et al., PNAS 91:969-973 (1994)), and chain shuffling (U.S. Patent No. 5,565,332).
  • Human antibodies are particularly desirable for therapeutic treatment of human patients.
  • Human antibodies can be made by a variety of methods known in the art including phage display methods described above using antibody libraries derived from human immunoglobulin sequences. See also, U.S. Patent Nos. 4,444,887 and 4,716,111; and PCT publications WO 98/46645, WO 98/50433, WO 98/24893, WO 98/16654, WO 96/34096, WO 96/33735, and WO 91/10741; each of which is inco ⁇ orated herein by reference in its entirety.
  • Human antibodies can also be produced using transgenic mice which are incapable of expressing functional endogenous immunoglobulins, but which can express human immunoglobulin genes.
  • the human heavy and light chain immunoglobulin gene complexes may be introduced randomly or by homologous recombination into mouse embryonic stem cells.
  • the human variable region, constant region, and diversity region may be introduced into mouse embryonic stem cells in addition to the human heavy and light chain genes.
  • the mouse heavy and light chain immunoglobulin genes may be rendered non-functional separately or simultaneously with the introduction of human immunoglobulin loci by homologous recombination. In particular, homozygous deletion of the JH region prevents endogenous antibody production.
  • the modified embryonic stem cells are expanded and microinjected into blastocysts to produce chimeric mice.
  • the chimeric mice are then bred to produce homozygous offspring which express human antibodies.
  • the transgenic mice are immunized in the normal fashion with a selected antigen, e.g., all or a portion of a polypeptide of the invention.
  • Monoclonal antibodies directed against the antigen can be obtained from the immunized, transgenic mice using conventional hybridoma technology.
  • the human immunoglobulin transgenes harbored by the transgenic mice rearrange during B cell differentiation, and subsequently undergo class switching and somatic mutation.
  • Completely human antibodies which recognize a selected epitope can be generated using a technique referred to as "guided selection.”
  • a selected non-human monoclonal antibody e.g., a mouse antibody, is used to guide the selection of a completely human antibody recognizing the same epitope. (Jespers et al., Bio/technology 12:899-903 (1988)).
  • antibodies to the polypeptides of the invention can, in turn, be utilized to generate anti-idiotype antibodies that "mimic" polypeptides of the invention using techniques well known to those skilled in the art. (See, e.g., Greenspan & Bona, FASEB J. 7(5):437-444; (1989) and Nissinoff, J. Immunol. 147(8):2429-2438 (1991)).
  • antibodies which bind to and competitively inhibit polypeptide multimerization and/or binding of a polypeptide of the invention to a ligand can be used to generate anti- idiotypes that "mimic" the polypeptide multimerization and/or binding domain and, as a consequence, bind to and neutralize polypeptide and/or its ligand.
  • Such neutralizing anti- idiotypes or Fab fragments of such anti-idiotypes can be used in therapeutic regimens to neutralize polypeptide ligand.
  • anti-idiotypic antibodies can be used to bind a polypeptide of the invention and or to bind its ligands/receptors, and thereby block its biological activity.
  • the invention further provides polynucleotides comprising a nucleotide sequence encoding an antibody of the invention and fragments thereof.
  • the invention also encompasses polynucleotides that hybridize under stringent or lower stringency hybridization conditions, e.g., as defined supra, to polynucleotides that encode an antibody, preferably, that specifically binds to a polypeptide of the invention, preferably, an antibody that binds to a polypeptide having the amino acid sequence of SEQ DD NO:2.
  • the antibody binds specifically to a polypeptide having the amino acid sequence of SEQ DD NO: 19.
  • the antibody binds specifically to a polypeptide having the amino acid sequence of SEQ DD NO:23. In another preferred embodiment, the antibody binds specifically to a polypeptide having the amino acid sequence of SEQ ID NO:28. In another preferred embodiment, the antibody binds specifically to a polypeptide having the amino acid sequence of SEQ DD NO:30. In another preferred embodiment, the antibody binds specifically to a polypeptide having the amino acid sequence of SEQ DD NO:39. In another preferred embodiment, the antibody binds specifically to a polypeptide having the amino acid sequence of SEQ DD NO:40. In another embodiment, the antibody binds specifically to a polypeptide having the amino acid sequence of SEQ DD NO:41.
  • the antibody binds specifically to a polypeptide having the amino acid sequence of SEQ DD NO:42. In another embodiment, the antibody binds specifically to a polypeptide having the amino acid sequence of SEQ ID NO:43. In another embodiment, the antibody binds specifically to a polypeptide having the amino acid sequence of SEQ DD NO:44. [0402]
  • the polynucleotides may be obtained, and the nucleotide sequence of the polynucleotides determined, by any method known in the art.
  • a polynucleotide encoding the antibody may be assembled from chemically synthesized oligonucleotides (e.g., as described in Kutmeier et al., BioTechniques 17:242 (1994)), which, briefly, involves the synthesis of overlapping oligonucleotides containing portions of the sequence encoding the antibody, annealing and ligating of those oligonucleotides, and then amplification of the ligated oligonucleotides by PCR.
  • chemically synthesized oligonucleotides e.g., as described in Kutmeier et al., BioTechniques 17:242 (1994)
  • a polynucleotide encoding an antibody may be generated from nucleic acid from a suitable source. If a clone containing a nucleic acid encoding a particular antibody is not available, but the sequence of the antibody molecule is known, a nucleic acid encoding the immunoglobulin may be chemically synthesized or obtained from a suitable source (e.g., an antibody cDNA library, or a cDNA library generated from, or nucleic acid, preferably poly A+ RNA, isolated from, any tissue or cells expressing the antibody, such as hybridoma cells selected to express an antibody of the invention) by PCR amplification using synthetic primers hybridizable to the 3' and 5' ends of the sequence or by cloning using an oligonucleotide probe specific for the particular gene sequence to identify, e.g., a cDNA clone from a cDNA library that encodes the antibody. Amplified nucleic acids generated by a suitable source (e.
  • nucleotide sequence and corresponding amino acid sequence of the antibody may be manipulated using methods well known in the art for the manipulation of nucleotide sequences, e.g., recombinant DNA techniques, site directed mutagenesis, PCR, etc.
  • the amino acid sequence of the heavy and/or light chain variable domains may be inspected to identify the sequences of the complementarity determining regions (CDRs) by methods that are well known in the art, e.g., by comparison to known amino acid sequences of other heavy and light chain variable regions to determine the regions of sequence hypervariability.
  • CDRs complementarity determining regions
  • one or more of the CDRs may be inserted within framework regions, e.g., into human framework regions to humanize a non-human antibody, as described supra.
  • the framework regions may be naturally occurring or consensus framework regions, and preferably human framework regions (see, e.g., Chothia et al., J. Mol. Biol.
  • the polynucleotide generated by the combination of the framework regions and CDRs encodes an antibody that specifically binds a polypeptide of the invention.
  • one or more amino acid substitutions may be made within the framework regions, and, preferably, the amino acid substitutions improve binding of the antibody to its antigen. Additionally, such methods may be used to make amino acid substitutions or deletions of one or more variable region cysteine residues participating in an intrachain disulfide bond to generate antibody molecules lacking one or more intrachain disulfide bonds.
  • Other alterations to the polynucleotide are encompassed by the present invention and within the skill of the art.
  • a chimeric antibody is a molecule in which different portions are derived from different animal species, such as those having a variable region derived from a murine mAb and a human immunoglobulin constant region, e.g., humanized antibodies.
  • Single chain antibodies are formed by linking the heavy and light chain fragments of the Fv region via an amino acid bridge, resulting in a single chain polypeptide.
  • Techniques for the assembly of functional Fv fragments in E. coli may also be used (Skerra et al., Science 242:1038- 1041 (1988)).

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Abstract

L'invention concerne des molécules d'acide nucléique codant des polypeptides neutrokine-alpha et/ou variant d'épissage de neutrokine-alpha, y compris des formes solubles du domaine extracellulaire. Ces polypeptides sont également fournis ainsi que des vecteurs, cellules hôtes et des procédés de recombinaison permettant de les produire. L'invention concerne également des anticorps ou des parties associées qui lient spécifiquement la neutrokine-alpha et/ou le variant d'épissage de neutrokine-alpha, ainsi que des procédés diagnostiques et thérapeutiques utilisant ces anticorps. Sont également traités des procédés diagnostiques qui permettent de détecter des troubles liés au système immune, ainsi que des procédés thérapeutiques permettant de traiter de tels troubles à l'aide des compositions selon l'invention.
PCT/US2001/025549 2000-08-15 2001-08-15 Neutrokine-alpha et variant d'epissage de neutrokine-alpha WO2002018620A2 (fr)

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EP01967981A EP1309718A4 (fr) 2000-08-15 2001-08-15 Neutrokine-alpha et variant d'epissage de neutrokine-alpha

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US24080600P 2000-10-17 2000-10-17
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US25002000P 2000-11-30 2000-11-30
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US27624801P 2001-03-16 2001-03-16
US60/276,248 2001-03-16
US29349901P 2001-05-25 2001-05-25
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US29612201P 2001-06-07 2001-06-07
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EP1507793A2 (fr) * 2001-10-17 2005-02-23 Human Genome Sciences, Inc. Neutrokine-alpha et variant d'epissage de neutrokine-alpha
US6869605B2 (en) 1999-01-25 2005-03-22 Biogen Idec Ma Inc. BAFF, inhibitors thereof and their use in the modulation of B-cell response
US6987270B2 (en) 2003-05-07 2006-01-17 General Electric Company Method to account for event losses due to positron range in positron emission tomography and assay of positron-emitting isotopes
WO2006034106A2 (fr) * 2004-09-16 2006-03-30 Xencor, Inc. Variantes baff et procedes associes
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US7083785B2 (en) 1999-08-17 2006-08-01 Biogen Idcc MA Inc. Methods of treatment by administering an anti-BCMA antibody
US7112421B2 (en) 2000-09-18 2006-09-26 Biogen Idec Ma Inc. Nucleic acids encoding BAFF receptor, chimeric proteins and methods and compositions related thereto
US7276241B2 (en) 1999-10-06 2007-10-02 Biogen Idec Ma Inc. Methods of treating a tumor that expresses APRIL by administering BCMA
US7553930B2 (en) 2003-01-06 2009-06-30 Xencor, Inc. BAFF variants and methods thereof
US7700317B2 (en) 2003-03-28 2010-04-20 Biogen Idec Ma Inc. Truncated baff receptors
US8062906B2 (en) 2000-08-18 2011-11-22 Human Genome Sciences, Inc. B-lymphocyte stimulator binding polypeptides and methods based thereon
US8101181B2 (en) * 2000-06-16 2012-01-24 Human Genome Sciences, Inc. Antibodies that immunospecifically bind to B lymphocyte stimulator protein
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US8211649B2 (en) 2006-03-31 2012-07-03 Human Genome Sciences, Inc. Methods of diagnosing and prognosing hodgkin's lymphoma
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US9168286B2 (en) 2005-10-13 2015-10-27 Human Genome Sciences, Inc. Methods and compositions for use in treatment of patients with autoantibody positive disease
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US8303951B2 (en) 1996-10-25 2012-11-06 Human Genome Sciences, Inc. Neutrokine-alpha antibodies and methods of use thereof
US8231873B2 (en) 1996-10-25 2012-07-31 Human Genome Sciences, Inc. Methods of treatment using antibodies to Neutrokine-alpha
US6869605B2 (en) 1999-01-25 2005-03-22 Biogen Idec Ma Inc. BAFF, inhibitors thereof and their use in the modulation of B-cell response
US9545086B2 (en) 1999-01-25 2017-01-17 Biogen Ma Inc. BAFF, inhibitors thereof and their use in the modulation of B-cell response and treatment of autoimmune disorders
US10494416B2 (en) 1999-08-17 2019-12-03 Biogen Ma Inc. Methods of modulating immune responses using BCMA polypeptide
US7691804B2 (en) 1999-08-17 2010-04-06 Biogen Idec Ma Inc. BAFF receptor (BCMA), an immunoregulatory agent
US9650430B2 (en) 1999-08-17 2017-05-16 Biogen, Ma Inc. Methods of treating autoimmune diseases using a B-cell maturation antigen (BCMA)
US8828669B2 (en) 1999-08-17 2014-09-09 Biogen Idec Ma Inc. Methods of screening for a compound that inhibits the interaction between BAFF and BCMA
US7083785B2 (en) 1999-08-17 2006-08-01 Biogen Idcc MA Inc. Methods of treatment by administering an anti-BCMA antibody
US7276241B2 (en) 1999-10-06 2007-10-02 Biogen Idec Ma Inc. Methods of treating a tumor that expresses APRIL by administering BCMA
US8101181B2 (en) * 2000-06-16 2012-01-24 Human Genome Sciences, Inc. Antibodies that immunospecifically bind to B lymphocyte stimulator protein
US9187548B2 (en) 2000-06-16 2015-11-17 Human Genome Sciences, Inc. Antibodies that immunospecifically bind to B lymphocyte stimulator protein
US8062906B2 (en) 2000-08-18 2011-11-22 Human Genome Sciences, Inc. B-lymphocyte stimulator binding polypeptides and methods based thereon
US7635677B2 (en) 2000-09-18 2009-12-22 Biogen Idec Ma Inc. BAFF receptor polypeptides
US8026072B2 (en) 2000-09-18 2011-09-27 Biogen Idec Ma Inc. Method of identifying compounds that bind BAFF-R
US8524672B2 (en) 2000-09-18 2013-09-03 Biogen Idec Ma Inc. Method for inhibiting BAFF-R activity
US7112421B2 (en) 2000-09-18 2006-09-26 Biogen Idec Ma Inc. Nucleic acids encoding BAFF receptor, chimeric proteins and methods and compositions related thereto
US7709220B2 (en) 2000-09-18 2010-05-04 Biogen Idec Ma Inc. Methods of monitoring treatment of BAFF-R related disease
US7638327B2 (en) 2000-09-18 2009-12-29 Biogen Idec Ma Inc. BAFF receptor antibodies and methods
EP1507793A4 (fr) * 2001-10-17 2006-02-01 Human Genome Sciences Inc Neutrokine-alpha et variant d'epissage de neutrokine-alpha
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WO2004081043A2 (fr) * 2003-01-06 2004-09-23 Xencor, Inc. Variants de baff et leurs methodes d'utilisation
US7553930B2 (en) 2003-01-06 2009-06-30 Xencor, Inc. BAFF variants and methods thereof
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US8022182B2 (en) 2003-03-28 2011-09-20 Biogen Idec Ma Inc. Truncated BAFF receptors
US7700317B2 (en) 2003-03-28 2010-04-20 Biogen Idec Ma Inc. Truncated baff receptors
US8303958B2 (en) 2003-03-28 2012-11-06 Biogen Idec Ma Inc. Method of treating immunological disorders by administering truncated BAFF receptors
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EP1309718A2 (fr) 2003-05-14

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