NZ249754A - Interleukin-10 and its use in inhibiting graft vs host disease or tissue rejection - Google Patents
Interleukin-10 and its use in inhibiting graft vs host disease or tissue rejectionInfo
- Publication number
- NZ249754A NZ249754A NZ249754A NZ24975493A NZ249754A NZ 249754 A NZ249754 A NZ 249754A NZ 249754 A NZ249754 A NZ 249754A NZ 24975493 A NZ24975493 A NZ 24975493A NZ 249754 A NZ249754 A NZ 249754A
- Authority
- NZ
- New Zealand
- Prior art keywords
- cells
- seq
- leu
- interleukin
- glu
- Prior art date
Links
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Description
<div class="application article clearfix" id="description">
<p class="printTableText" lang="en">2 A 9 7 5 4 <br><br>
New Zealand No. 249754 International No. PCT/US 93/01665 <br><br>
TO BE ENTERED AFTER ACCEPTANCE AND PUBLICATION <br><br>
Priority dates: 4-^ <br><br>
International filing date: 2\3^ 3 <br><br>
Classification: \?Clo\ K3>8|2.0, <br><br>
Con . | s«f <br><br>
Publication date: 2 <t JUN 1997 Journal No.: <br><br>
NEW ZEALAND PATENTS ACT 1953 <br><br>
COMPLETE SPECIFICATION <br><br>
Title o'.' invention: <br><br>
Use of interleukin-10 to suppress graft-VS.-host disease <br><br>
Name, address and nationality of applicant(s) as in international application form: <br><br>
SCHERING CORPORATION, a New Jersey corporationof 2000 Galloping Hill Road, Kenilworth, New Jersey 07033, United States of America <br><br>
/ D4 <br><br>
WO 93/17698 . PCT/US93/01665 <br><br>
USE OF 1NTERLEUKIN-10 TO SUPPRESS GRAFT-VS.-HOST DISEASE <br><br>
Field of the Invention <br><br>
The invention relates generally to the use of interleukin-10 for the manufacture of a medicament for the treatment of graft-vs.-host disease, or for preparing a pharmaceutical composition useful for treating graft-vs.-host disease. <br><br>
SUMMARY OF THE INVENTION ® The invention relates to the use of interleukin-10 for the manufacture of a medicament for the treatment of graft-vs.-host disease. <br><br>
The present invention further relates to the use of interleukin-10 for preparing a pharmaceutical composition useful for treating graft-vs.-host disease. <br><br>
Described are methods of treatment as set out in the accompanying 10 claim set. Also described are pharmaceutical compositions comprising interleukin-10 or active valiants thereof. Preferably, the interleukin-10 of the invention is selected from the group consisting of the mature polypeptides having the open reading frames that are defined by the amino acid sequences given in SEQ. ID. NOS. 1 and 2 herein (all SEQ. 15 IDs. are given immediately before the Claims), wherein the standard three-letter abbreviation is used to indicate L-amino acids, starting from the N-terminus. These two forms of IL-10 are sometimes referred to as human IL-10 (or human cytokine synthesis inhibitory factor) and viral IL-10 (or BCRF1), respectively: e.g. Moore et al., Science, Vol. 248, pgs. 1230-1234 20 (1990); Vieira et al., Proc. Natl. Acad. Sci., Vol. 88, pgs. 1172-1176 (1991); Fiorentino et al., J. Exp. Med., Vol. 170, pgs. 2081-2095 (1989); Hsu et al.. Science, Vol. 250, pgs. 830-832 (1990). More preferably, the mature IL-10 or variants thereof used in the methods of the invention are selected from the group consisting of the mature polypeptides having the open reacjji 25 frames that are defined by the amino acid sequences given in SI NOS. 3 and 4 herein. <br><br>
Brief Description of the Drawings <br><br>
Figure 1 is a diagram of the vector pcD(SRa) used for IL-10 in mammalian cells. <br><br>
30 Figure 2 is a diagram of the vector TRP-C11 used for expressing <br><br>
IL-10 in bacteria. <br><br>
24975 <br><br>
WO 93/17698 PCT/US93/016 <br><br>
-2 - <br><br>
Figure 3 shows plasmid pGSRG carrying the open reading frame (ORF) of mouse IL-10, viral IL-10, or human IL-10 inserted into its Xhol restriction site; it also shows the sequence of the RBS-ATG-polylinker regions of the final construction (called TAC-RBS). <br><br>
5 Figure 4 shows the effects of endogenous and exogenous IL-10 on the proliferative responses in MLC. PBMC (1 x 105/well) and allogeneic irradiated PBMC (1 x 105/well) (PBMC donor A x PBMC donor B (A); PBMC donor B x PBMC donor A (B)) were cultured for 5 days in the presence of increasing concentrations of IL-10 (open bars) and anti-IL-10 10 mAb (solid bars). MLC were carried out in the absence (solid bars) or in the presence (hatched bars) of 100 U/ml IL-10 and incre sing concentrations of anti-IL-10 mAb (C). <br><br>
Figure 5 shows the effects of IL-10 on the proliferative responses of purified T cells stimulated with various allogeneic cells. Purified T cells 15 (1 x 105/we!l) were cultured for 5 days with allogeneic irradiated elutriated monocytes (2 x 104/well) (A), positively sorted CD14+ monocytes (2 x 104/well) (B), purified B cells (3.3 x 104/well) (C), EBV-LCL (1 x 104/well) (D) in the presence of increasing concentrations of IL-10. <br><br>
Figure 6 shows how the kinetics of the IL-10 effects depend upon 20 the time that the IL-10 is added to the culture. PBMC (1 x 105/well) and allogeneic irradiated PBMC (1 x 105/well) were cultured for 5 days. The indicated concentrations of IL-10 were added at times indicated. <br><br>
Figure 7 shows the effects of IL-10 on IL-2-production in MLC. PBMC (1 x 105/well) and allogeneic irradiated PBMC (1 x 105/well) were 25 cultured with increasing concentrations of IL-10 and in the presence or in the absence of 10jig/ml of the anti-IL-2 R antibody BB10. Three days later the supernatants were harvested and assayed for their IL-2 content by cytokine-specific ELISA. <br><br>
Figure 8 shows the effect of exogenous IL-2 on the reduced 30 alloantigen-induced proliferative response of T cells induced by IL-10. Purified T cells (105/well) stimulated with allogeneic irradiated PBMC (105/well) (A), or purified B cells (3.3 x 104/well) (B), were cultured with increasing amounts of IL-2 in the absence (open symbols) or in the presence (closed symbols) of 100 U/ml of IL-10. <br><br>
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DETAILED DESCRIPTION OF THE INVENTION <br><br>
The invention is directed to the use of interleukin-10 for the manufacture of a medicament for the treatment of graft-vs.-host disease. The invention is further directed to the use of interleukin-10 for preparing a pharmaceutical composition useful for treating graft-vs.-host disease. Described is a method of using IL-10 or agonists thereof to suppress graft-vs.-host disease in individuals, e.g., transplant patients. Also described are pharmaceutical 5 compositions comprising IL-10 for carrying out the method. IL-10 for use in the invention is selected from the group of mature polypeptides encoded by the open reading frames defined by the cDNA inserts of pH5C, pH15C, and pBCRFI (SRa), which are deposited with the American Type Culture Collection (ATCC), Rockville, Maryland, under accession numbers 68191, 10 68192, and 68193, respectively, and active variants thereof, e.g., agonists. Agonists include both muteins and post-translational variants of, e.g., processing, truncation, glycosylation. <br><br>
L Assays for lnterieukin-10 <br><br>
IL-1 Os exhibit several biological activities which could form the basis 15 of assays and units. In particular, IL-10s have the property of inhibiting the synthesis of at least one cytokine in the group consisting of lFN-y, lymphotoxin, IL-2, IL-3, and GM-CSF in a population of T helper cells induced to synthesize one or more of these cytokines by exposure to syngeneic antigen-presenting cells (APCs) and antigen. In this activity, the 20 APCs are treated so that they are incapable of replication, but that their antigen-processing machinery remains functional. This is conveniently accomplished by irradiating the APCs, e.g. with about 1500-3000 R (gamma or X-radiation) before mixing with the T cells. <br><br>
Alternatively, cytokine inhibition may be assayed in primary or, 25 preferably, secondary mixed lymphocyte reactions (MLR), in which case syngeneic APCs need not be used. MLRs are well known in the art, e.g. Bradley, pgs. 162-166, in Mishell et al., eds. Selected Methods in Cc Immunology (Freeman, San Francisco, 1980); and Battisto et Enzymol., Vol. 150, pgs. 83-91 (1987). Briefly, two populj 30 allogeneic lymphoid cells are mixed, one of the populations having.! treated prior to mixing to prevent proliferation, e.g. by irradiation. <br><br>
Preferably, the cell populations are prepared at a concentration of 2x10® cells/ml in supplemented medium, e.g. RPM11640 with T6®/ <br><br>
calf serum. For both controls and test cultures, mix 0.1 ml of each <br><br>
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population for the assay. For a secondary MLR, the cells remaining after 7 days in the primary MLR are re-stimulated by freshly prepared, irradiated stimulator cells. The sample suspected of containing IL-10 may be added to the test cultures at the time of mixing, and both controls and test cultures 5 may be assayed for cytokine production from 1 to 3 days after mixing. <br><br>
Obtaining T cell populations and/or APC populations for IL-10 assays employs techniques well known in the art which are fully described in DiSabato et al., eds., Meth. in EnzymoL, Vol. 108 (1984). APCs for the preferred IL-10 assay are peripheral blood monocytes. These are 10 obtained using standard techniques, e.g. as described by Boyum, Meth. in EnzymoL, Vol. 108, pgs. 88-102 (1984); Mage, Meth. in EnzymoL, Vol. 108, pgs. 118-132 (1984); Litvin et al., Meth. in EnzymoL, Vol. 108, pgs. 298-302 (1984); Stevenson, Meth. in EnzymoL, Vol. 108, pgs. 242-249 (1989); and Romain et al., Meth. in EnzymoL, Vol. 108, pgs. 148-153 15 (1984); all of which references are incorporated herein by reference. <br><br>
Preferably, helper T cells are used in the IL-10 assays, which are obtained by first separating lymphocytes from the peripheral blood and then selecting, e.g. by panning or flow cytometry, helper cells using a commercially available anti-CD4 antibody, e.g. OKT4 described in U.S. 20 patent 4,381,295 and available from Ortho Pharmaceutical Corp. The requisite techniques are fully disclosed by Boyum in Scand. J. Clin. Lab. Invest., Vol. 21 (Suppl. 97), pg. 77 (1968), and in Meth. in EnzymoL, Vol. 108 (cited above), and by Bram et al. in Meth. in EnzymoL, Vol. 121, pgs. 737-748 (1986). Generally, PBLs are obtained from fresh blood by Ficoll-25 Hypaque density gradient centrifugation. <br><br>
A variety of antigens can be employed in the assay, e.g. Keyhole limpet hemocyanin (KLH), fowl y-globulin, or the like. More preferably, in place of antigen, helper T cells are stimulated with anti-CD3 monoclonal antibody, e.g. OKT3 disclosed in U.S. patent 4,361,549, in the assay. 30 Cytokine concentrations in control and test samples are measured by standard biological and/or immunochemical assays. Construction of immunochemical assays for specific cytokines is well known in the art when the purified cytokine is available: e. g. Campbell, Monoclonal Antibody Technology (Elsevier, Amsterdam, 1984); Tijssen, Practice and .35 Theory of Enzyme Immunoassays (Elsevier, Amsterdam, 1985); and U.S. patent 4,486,530 are exemplary of the extensive literature on the subject. <br><br>
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ELISA kits for human IL-2, human IL-3, and human GM-CSF are commercially available from Genzyme Corp. (Boston, MA); and an ELISA kit for human IFN-yis commercially available from Endogen, Inc. (Boston, MA). Polyclonal antibodies specific for human lymphotoxin are available 5 from Genzyme Corp. which can be used in a radioimmunoassay for human lymphotoxin, e.g. Chard, An Introduction to Radioimmunoassay and Related Techniques (Elsevier, Amsterdam, 19B2). <br><br>
Biological assays of the cytokines listed above can also be used to determine IL-10 activity. A biological assay for human lymphotoxin is 10 disclosed by Aggarwal, Meth. in EnzymoL, Vol. 116, pgs. 441-447 (1985), and Matthews et al., pgs. 221-225, in Clemens et al., eds., Lymphokines and Interferons: A Practical Approach (IRL Press, Washington, D.C., 1987). Human IL-2 and GM-CSF can be assayed with factor dependent cell lines CTLL-2 and KG-1, availabia from the ATCC under accession numbers TIB 15 214 and CCL 246, respectively. Human IL-3 can be assayed by it ability to stimulate the formation of a wide range of hematopoietic cell colonies in soft agar cultures, e.g. as described by Metcalf, The Hemopoietic Colony Stimulating Factors (Elsevier, Amsterdam, 1984). IFN-y can be quantified with anti-viral assays, e.g. Meager, pgs. 129-147, in Clemens et al., eds. 20 (cited above). See also, Roitt (1992) Encyclopedia of Immunology. <br><br>
Academic Press, New York; and Coligan (1992 and periodic supplements) Current Protocols in Immunology Greene/Wiley, New York. <br><br>
Cytokine production can also be determined by mRNA analysis. Cytokine mRNAs can be measured by cytoplasmic dot hybridization as 25 described by White et al., J. Biol. Chem., Vol. 257, pgs. 8569-8572 (1982), and Gillespie et al., U.S. patent 4,483,920. Accordingly, these references are incorporated by reference. Other approaches include dot blotting using purified RNA, e.g. chapter 6, in Hames et al., eds., Nucleic Acid Hybridization A Practical Approach (IRL Press, Washington, D.C., 1985). 30 Some samples to be tested for IL-10 activity may require pretreatment to remove predetermined cytokines that might interfere with the assay. For example, IL-2 increases the production of IFN-y in some cells. Thus depending on the helper T cells used in the assay, IL-2 may have to be removed from the sample being tested. Such removals are 35 conveniently accomplished by passing the sample over a standard anti-cytokine affinity column. <br><br>
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For convenience, units of IL-10 activity are defined in terms of IL-10's ability to augment the IL-4-induced proliferation of MC/9 cells, <br><br>
which are described in U.S. patent 4,559,310 and available from the ATCC under accession number CRL 8306. 1 unit/ml is defined as the 5 concentration of IL-10 which gives 50% of maximum stimulation of MC/9 proliferation above the level of IL-4 in the following assay. Prepare duplicate or triplicate dilutions of IL-4 and IL-10 in 50 jil of medium per well in a standard microtiter plate. Medium consists of RPM11640,10% fetal calf serum, 50 p.M 2-mercaptoethanol, 2 mM glutamine, penicillin (100 U/L) 10 and streptomycin (100 ng/L). Add IL-4, 25 |xl/well of 1600 U/ml (400 U/ml final) diluted in medium and incubate overnight, e.g. 20-24 hours. Add 3H-thymidine (e.g. 50 ^Ci/ml in medium) at 0.5-1.0 nCi/well and again incubate the cells overnight; thereafter harvest the cells and measure the incorporated radioactivity. <br><br>
15 Variants and analogs of the IL-10 described herein can be made by recombinant means as described in, e.g., Sambrook et al. (1989) <br><br>
Molecular Cloning: A Laboratory Manual Cold Spring Harbor Press, Cold Spring Harbor, New York; or Ausubel (1987 and periodic supplements) Current Protocols in Molecular Biology Greene/Wiley, New York; or by 20 synthetic techniques, as described, e.g., in Atherton et al. (1989) Solid Phase Peptide Synthesis: A Practical Approach IRL Press, Oxford. <br><br>
H. Purification and Pharmaceutical Compositions <br><br>
When polypeptides useful in the present invention are expressed in soluble form, for example as a secreted product of transformed yeast or 25 mammalian cells, they can be purified according to standard procedures of the art, including steps of ammonium sulfate precipitation, ion exchange chromatography, gel filtration, electrophoresis, affinity chromatography, and/or the like: e.g. "Enzyme Purification and Related Techniques," <br><br>
Methods in Enzymology, 22:233-577 (1977); and Scopes, R., Protein 30 Purification: Principles and Practice (Springer-Verlag, New York, 1 <br><br>
provide guidance in such purifications. Likewise, when polypeptides useifiil fh the invention are expressed in insoluble form, for example as aggregate gi inclusion bodies, or the like, they can be purified by standard procediges in the art, including separating the inclusion bodies from disrupted host^lls <br><br>
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by centrifugation, solubUizing the inclusion bodies with chaotropic and reducing agents, diluting the solubilized mixture, and lowering the concentration of chaotropic agent and reducing agent so that the polypeptide takes on a biologically active conformation. The latter 5 procedures are disclosed in the following references, which are incorporated by reference: Winkler et al., Biochemistry, 25:4041-4045 (1986); Winkler et al., Biotechnology, 3:992-998 (1985); Koths et al., U.S. patent 4,569,790; and European patent applications 86306917.5 and 86306353.3. <br><br>
10 As used herein "effective amount" means an amount suffident to reduce or prevent graft-vs.-host disease or tissue rejection. See, e.g., Paul (1989) Fundamental Immunology Raven Press, New York. The effective amount for a particular patient may vary depending on such factors as the state, type, and amount of tissue transplanted, the overall health of the 15 patient, method of administration, the severity of side-effects, and the like. Generally, IL-10 is administered as a pharmaceutical composition comprising an effective amount of IL-10 and a pharmaceutical carrier. A pharmaceutical carrier can be any compatible, non-toxic substance suitable for delivering the compositions to a patient. <br><br>
20 Generally, compositions useful for parenteral administration of such drugs are well known, e.g. Remington's Pharmaceutical Science, 15th Ed. (Mack Publishing Company, Easton, PA 1980). Alternatively, compositions may be introduced into a patient's body by implantable or injectable drug delivery system, e.g. Urquhart et al., Ann. Rev. Pharmacol. 25 Toxicol., Vol. 24, pgs. 199-236 (1984); Lewis, ed. Controlled Release of Pesticides and Pharmaceuticals (Plenum Press, New York, 1981); U.S. <br><br>
patent 3,773,919; U.S. patent 3,270,960; and the like. p <br><br>
When administered parenterally, the IL-10 is formulated in a unit I tuj dosage injectable form (solution, suspension, emulsion) in association iwith ^ 30 a pharmaceutical carrier. Examples of such carriers are normal saline/ <br><br>
Ringer's solution, dextrose solution, and Hank's solution. Nonaqueous carriers such as fixed oils and ethyl oleate may also be used. A preferred carrier is 5% dextrose/saline. The carrier may contain minor amoun^ <br><br>
additives such as substances that enhance isotonicity and chemicall 35 stability, e.g., buffers and preservatives. The IL-10 is preferably formulated in purified form substantially free of aggregates and other proteins at a <br><br>
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concentration in the range of about 5 to 20 jig/ml. Preferably, IL-10 is administered by continuous infusion so that an amount in the range of about 50-800 ng is delivered per day (i.e. about 1-16 ^g/kg/day). The daily infusion rate may be varied based on monitoring of side effects and blood 5 cell counts. <br><br>
EXAMPLES <br><br>
The following examples serve to illustrate the present invention. The selected vectors and hosts, the concentration of reagents, the temperatures, and the values of other variables are only to exemplify 10 application of the present invention and are not to be considered limitations thereof. <br><br>
Example 1. Expression of human CSIF in a bacterial host <br><br>
A synthetic human CSIF gene is assembled from a plurality of chemically synthesized double-stranded DNA fragments to form an 15 expression vector designated TAC-RBS-hCSlF. Cloning and expression are carried out in a standard bacterial system, for example E. coli K-12 strain JM101, JM103, or the like, described by Viera and Messing, in Gene, Vol. 19, pgs. 259-268 (1982). Restriction endonuclease digestions and ligase reactions are performed using standard protocols, e.g. Maniatis et 20 al., Molecular Cloning: A Laboratory Manual (Cold Spring Harbor Laboratory, New York, 1982). <br><br>
The alkaline method (Maniatis et al., cited above) is used for small scale plasmid preparations. For large scale preparations a modification of the alkaline method is used in which an equal volume of isopropanol is 25 used to precipitate nucleic acids from the cleared lysate. Precipitation with cold 2.5 M ammonium acetate is used to remove RNA prior to cesium chloride equilibrium density centrifugation and detection with ethidium bromide. <br><br>
For filter hybridizations Whatman 540 filter circles are used to lift 30 colonies which are then lysed and fixed by successive treatments with <br><br>
0.5M NaOH, 1.5M NaCI; IMTris.HCI pH8.0, 1.5M NaCI (2 min each); and heating at 80°C for 2 hours. Hybridizations are in 6xSSPE, 50% formamide, 0.1% sodium dodecylsulphate (SDS), 100 |ig/ml E. coli tRNA <br><br>
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at 42°C for 6 hours using 32P-labelled (kinased) synthetic DNAs. <br><br>
(20xSSPE is prepared by dissolving 174 g of NaCI, 27.6 g of NaH2P04-9H20, and 7.4 g of EDTA in 800 ml of H2O. pH is adjusted to 7.4 with NaOH, volume is adjusted to 1 liter, and the whole is sterilized by 5 autoclaving.) Filters are washed twice (15 min, room temperature) with IxSSPE, 0.1% SDS. After autoradiography (Fuji RX film), positive colonies are located by aligning the regrown colonies with the blue-stained colonies on the filters. DNA is sequenced by the dideoxy method of Sanger et al. Proc. Natl. Acad. Sci., Vol. 74, pg. 5463 (1977). Templates 10 for the dideoxy reactions are either single-stranded DNAs of relevant regions recloned into M13mp vectors, e.g. Messing et al. Nucleic Acids Res., Vol. 9, pg. 309 (1981); or double-stranded DNA prepared by the miniaikaline method and denatured with 0.2M NaOH (5 min, room temperature) and precipitated from 0.2M NaOH, 1.43M ammonium acetate 15 by the addition of 2 volumes of ethanol. DNA is synthesized by phosphoramidite chemistry using Applied Biosystems 380A synthesizers. Synthesis, deprotection, cleavage and purification (7M urea PAGE, <br><br>
elution, DEAE-cellulose chromatography) are done as described in the 380A synthesizer manual. <br><br>
20 Complementary strands of synthetic DNAs to be cloned (400 ng each) are mixed and phosphorylated with polynucleotide kinase in a reaction volume of 50 |il. This DNA is ligated with 1 jig of vector DNA digested with appropriate restriction enzymes, and ligations are in a volume of 50 p.l at room temperature for 4 to 12 hours. Conditions for 25 phosphorylation, restriction enzyme digestions, polymerase reactions, and ligation have been described (Maniatis et al., cited above). Colonies are scored for Iac2+ (when desired) by plating on L agar supplemented with ampicillin, isopropyl-1-thio-beta-D-galactoside (IPTG) (0.4 mM) and 5-bromo-4-chloro-3-indolyl-beta-D-galactopyranoside (x-gal) (40 mg/ml). 30 The TAC-RBS vector is constructed by filling-in with DNA <br><br>
polymerase the single Bam HI site of the tacP-bearing plasmid pDR540 (Pharmacia). This is then ligated to unphosphorylated synthetic oligonucleotides (Pharmacia) which form a double-stranded fragment encoding a consensus ribosome binding site as given in SEQ. ID. NO. 5 herein and 35 designated RBS. After ligation, the mixture is phosphorylated and religated with the SstI linker ATGAGCTCAT. This complex is then cleaved <br><br>
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with Ssfl and Eco RI, and the 173 base pair (bp) fragment isolated by polyacrylamide gel electrophoresis (PAGE) and cloned into EcoRI-Ssfl-restricted pUC19 (Pharmacia) (as described below). The sequence of the RBS-ATG-polylinker regions of the final construction (called TAC-RBS) Is 5 shown in Figure 2. <br><br>
The synthetic IL-10 gene is assembled into a pUC19 plasmid in eight steps. At each step inserts free of deletions and/or inserts can be detected after cloning by maintaining the lacZ(a) gene of pUC19 in frame with the ATG start codon inserted in step 1. Clones containing deletion 10 and/or insertion changes can be filtered out by scoring for blue colonies on L-ampicillin plates containing x-gal and IPTG. Alternatively, at each step sequences of inserts can be readily confirmed using a universal sequencing primer on small scale plasmid DNA preparations, e.g. <br><br>
available from Boehringer Mannheim. <br><br>
15 In step 1, the TAC-RBS vector is digested with Ssfl, treated with T4 <br><br>
DNA polymerase (whose 3'-exonuclease activity digests the 3-protruding strands of the Ssfl cuts to form blunt-end fragments), and after deactivation of T4 DNA polymerase, treated with Eco RI to form a 173 bp fragment containing the TAC-RBS region and having a blunt end at the ATG start codon 20 and the Eco RI cut at the opposite end. Finally, the 173 bp TAC-RBS fragment is isolated. <br><br>
In step 2, the isolated TAC-RBS fragment of step 1 is mixed with Eco RI/Kpn I-digested plasmid pUC19 and synthetic fragment 1A/B whose nucleic acid sequences are shown in SEQ. ID. NOs. 6 and 7 herein, which 25 has a blunt end at its upstream terminus and a staggered end corresponding to a Kpn I cut at its downstream terminus. This Kpn I end is adjacent to and downstream of a Bsi En site. The fragments are ligated to form the pUC19 of step 2. <br><br>
In step 3, synthetic fragments 2A/B and 3A/B are mixed with 30 Bst EU/Sma I-digested pUC . 9 of step 2 (after amplification and purification) and ligated to form pUC19 of step 3V The nucleic acid sequences of synthetic fragment 2A/B are shown in SEQ. ID. NOs. 8 and 9 herein and the nucleic acid sequences of synthetic fragment 3A/B are shown in SEQ. ID. NOs. 10 and 11 herein. Note that the downstream 35 terminus of fragment 3A/B contains extra bases which form the Sma I . blunt-end. These extra bases are cleaved in step 4. Also, fragments 2A/B <br><br>
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and 3A/B have complementary 9-residue single-stranded ends which anneal upon admixture, leaving the upstream BsfEHcutof 2A/B and the downstream blunt end of 3A/B to ligate to the pUC19. <br><br>
In step 4, the pUC19 of step 3 is digested with AflU/Xbal, amplified, 5 purified, repurified, mixed with synthetic fragment 4A/B whose nucleic acid sequences are shown in SEQ. ID. NOs. 12 and 13 herein, and ligated to form pUC19 of step 4. <br><br>
In step 5, the pUC19 of step 4 is digested with XbaVSall, amplified and purified, and mixed with synthetic fragment 5A/B whose nucleic acid 10 sequences are shown in SEQ. ID. NOs. 14 and 15 herein and ligated to form the pUC19 of step 5. Note that the Sal I-staggered end of fragment 5A/B is eliminated by digestion with Hpa I in step 6. <br><br>
In step 6, the pUC19 of step 5 is digested with HpaUPstl, amplified and purified, and mixed with synthetic fragment 6A/B whose nucleic acid 15 sequences are shown in SEQ. ID. NOs. 16 and 17 herein and ligated to form the pUC19 of step 6. <br><br>
In step 7, the pUC19 of step 6 is digested with ClaJ/Sphl, amplified and purified, and mixed with synthetic fragment 7A/B whose nucleic acid sequences are shown in SEQ. ID. NOs. 18 and 19 herein and ligated to 20 form the pUC19 of step 7. <br><br>
In step 8, the pUC19 of step 7 is digested with Mlul/HindJE, amplified and purified, and mixed with synthetic fragments 8A/B and 9A/B and ligated to form the final construction, which is then inserted into E. coli K-12 strain JM101, e.g. available from the ATCC under accession number 25 33876, by standard techniques. The nucleic acid sequences of synthetic fragment 8A/B are shown in SEQ. ID. NOs. 20 and 21 herein and the nucleic acid sequences of synthetic fragment 9A/B are shown in SEQ. ID. NOs. 22 and 23 herein. After cultivation, protein is extracted from the JM101 cells and dilutions of the extracts are tested for biological activity. <br><br>
30 Example 2. Expression of vlL-10 in COS 7 Monkey cells <br><br>
A gene encoding the open reading frame of vlL-10 was amplified by polymerase chain reaction using primers that allowed later insertion of the amplified fragment into an Eco Rl-digested pcD(SRa) vector (Figure 1). <br><br>
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The coding strand of the inserted fragment is shown in SEQ. ID. NO. 15 herein. <br><br>
Clones carrying the insert in the proper orientation were identified by expression of vlL-10 and/or the electrophoretic pattern of restriction 5 digests. One such vector carrying the vll.-10 gene was designated pBCRFI(SRa) and was deposited with the ATCC under accession number 68193. pBCRFI(SRa) was amplified in E. coli MC1061, isolated by standard techniques, and used to transfect COS 7 monkey cells as follows: One day prior to transfection, approximately 1.5 x 106 COS 7 monkey cells 10 were seeded onto individual 100 mm plates in Dulbecco's modified Eagle medium (DME) containing 5% fetal calf serum (FCS) and 2 mM glutamine. To perform the transfection, COS 7 cells were removed from the dishes by incubation with trypsin, washed twice in serum-free DME, and suspended to 107 cells/ml in serum-free DME. A 0.75 ml aliquot was mixed with 20 |ig 15 DNA and transferred to a sterile 0.4 cm electroporation cuvette. After 10 minutes, the cells were pulsed at 200 volts, 960 |xF in a BioRad Gene Pulser unit. After another 10 minutes, the cells were removed from the cuvette and added to 20 ml of DME containing 5% FCS, 2mM glutamine, penicillin, streptomycin, and gentamycin. The mixture was aliquoted to four 20 100 mm tissue culture dishes. After 12-24 hours at 37°C, 5% CO2, the medium was replaced with similar medium containing only 1% FCS and the incubation continued for an additional 72 hours at 37°C, 5% CO2. after which the medium was collected and assayed for its ability to inhibit IFN-y synthesis. <br><br>
25 10 ml aliquots of freshly isolated PBLs (about 2x106 cells/ml) were incubated at 37°C with PHA (100 ng/ml) in medium consisting of (i) 90% DME supplemented with 5% FCS and 2 mM glutamine, and (ii) 10% supernatant from COS 7 cells previously transfected with pBCRFI (SRa). After 24 hours the cells and supernatants were harvested to assay for the 30 presence of either IFN-y mRNA or IFN-y protein, respectively. Controls were treated identically, except that the 10% supernatant was from COS 7 cultures previously transfected with a plasmid carrying an unrelated cDNA insert. The vlL-10-treated samples exhibited about a 50% inhibition of IFN-y synthesis relative to the controls. <br><br>
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Example 3. Expression of vlL-10 in Escherichia coll <br><br>
A gene encoding the mature vlL-10 shown in SEQ. ID. NO. 4 herein may be expressed in E. coli. <br><br>
The cDNA insert of pBCRFI(SRa) is recloned into an M13 plasmid 5 where it is altered twice by site-directed mutagenesis: first to form a C/al site at the 5'-end of the coding region for the mature vlL-10 polypeptide, and second to form a Bam HI site at the 3'-end of the coding region for the mature vlL-10 polypeptide. The mutated sequence is then readily inserted into the TRPC11 expression vector described below. 10 The TRPC11 vector was constructed by ligating a synthetic consensus RBS fragment to Cla I linkers (ATGCAT) and by cloning the resulting fragments into Cla I-restricted pMT11hc (which had been previously modified to contain the Cla I site). pMT 11 he is a small (2.3 kilobase) high copy, AMPR, TETS derivative of pBR322 that bears the tcVX 15 plasmid Eco RI-Hin dm polylinker region. (71VX is described by Maniatis et al., Molecular Cloning: A Laboratory Manual, Cold Spring Harbor Laboratory, 1982). This was modified to contain the Cla I site by restricting pMT11 he with Eco RI and Bam HI, filling in the resulting sticky ends and ligating with Cla I linker (CATCGATG), thereby restoring the Eco RI and 20 Bam HI sites and replacing the Sma I site with a Cla I site. One transformant from the TRPC11 construction had a tandem RBS sequence flanked by Cla I sites. One of the Cla I sites and part of the second copy of the RBS sequence were removed by digesting this plasmid with Psfl, treating with Bal31 nuclease, restricting with Eco RI and treating with T4 25 DNA polymerase in the presence of all four deoxynucleotide triphosphates. The resulting 30-40 bp fragments were recovered by PAGE and cloned into Sma I-restricted pUC12. A *48 bp E. coli trpP-bearing Eco RI fragment derived from pKC101 (described by Nichols et al. in Methods in Enzymology, Vol. 101, pg. 155 (Academic Press, N.Y. 1983)) was then 30 cloned into the Eco RI site to complete the TRPC11 construction, which is illustrated in Figure 2. TRPC11 is employed as a vector for vlL-10 by first digesting it with Cla I and Bam HI, purifying it, and then mixing it in a standard ligation solution with the Clal-Bam HI fragment of the M13 containing the nucleotide sequence coding for the mature BCRF1. The 35 insert-containing TRPC11, referred to as TRPC11-BCRF1, is propagated in ;WO 93/17698 ;-14 - ;E. coli K12 strain JM101, e.g. available from the ATCC under accession number 33876. ;Example 4 ;This Example was disclosed after the priority date of this document 5 by Bejarano et al. (1992) International Immunology 4:1389-1397. It provides in vitro evidence for the effectiveness of IL-10 treatment in appropriate circumstances. More particularly, it demonstrates that IL-10 inhibits allogeneic proliferative and cytotoxic T cell responses generated in primary mixed lymphocyte cultures (MLC). ;10 This Example shows how IL-10 inhibited the alloantigen-induced proliferative responses in a dose-dependent fashion. The suppressive effect was optimal when IL-10 was added at the beginning of the cultures, suggesting that it acts on the early stages of T cell activation. The proliferative responses were enhanced in the presence of anti-IL-10 mAb, 15 indicating that endogenously produced IL-10 suppresses proliferation in primary MLC. Whether the stimulator cells were irradiated allogeneic peripheral blood mononuclear cells (PBMC), purified monocytes, or B cells, the inhibitory effects of IL-10 were still observed. The reduced proliferative responses were not restored by high concentrations of 20 exogenous IL-2, indicating that the effects of IL-10 are not only related to inhibition of IL-2 synthesis. Furthermore, the production of IL-2, IFN-y, IL-6, GM-CSF, and TNF-a in primary MLC was diminished by IL-10 and enhanced in the presence of anti-IL-10 mAb. The strongest effects were observed on the production of IFN-y. Although IL-10 reduces the prolifer-25 ative responses, the ratio of CD3+CD4+ and CD3+CD8+T cells remained the same in IL-10-treated cultures and in control cultures. However, the percentages of activated CD3+ T cells as judged by CD25+ and HLA-DR+ expression were consistently reduced in the presence of IL-10. ;IL-10 inhibits allospecific proliferative responses and cytokine 30 production. In addition, it was demonstrated that the reduced proliferative responses could not be restored by exogenous IL-12, suggesting that IL-10 inhibits allospecific proliferative T cell responses predominantly by reducing the stimulatory capacity of the stimulator cells. ;249754 ;WO 93/17698 PCI7US93/01665 ;-15 - ;These data indicate that IL-10 has important regulatory effects on allogeneic responses in vitro. ;Medium and Reagents. ;Cells were cultured in Yssel's medium supplemented with 10% 5 pooled heat-inactivated human AB serum. See Yssel et al. (1986) Eur. J. Immunol. 16:1187- . ;The neutralizing anti-IL-10 mAb 19F1 was raised against vlL-10 and efficiently neutralized hlL-10 and vlL-10. See Bejarano et al. (1985) Int. J. Cancer 35:327; and ATCC deposit HB10487, deposited June 28, 1990. 10 The BB10 mAb, which recognizes the IL-2R p55 chain, was a kind gift of ;Dr. J. Wijdenes (CRTS, Besangon, France; see Herve et al. (19 ) Blood ;75:1017-1023). Murine anti-CD3 (anti-Leu-4, lgG1), anti-CD4 (anti-Leu-3a, lgG1), anti-CD8 (anti-Leu-2a, lgG2a), anti-CD14 (anti-Leu-M3, lgG2b), anti-CD19 (anti-Leu-12, IgGI), anti-CC/25 (anti-IL2R p55, lgG1), anti-CD55 15 (anti-Leu-19, lgG1), anti-HLA-DR (clone L243, »gG2a) mAb and control mAb of appropriate isotypes were purchased from Becton-Dickinson (Mountain View, CA). ;Cell Preparations. ;Buffy coat preparations were obtained from the Blood Bank of 20 Stanford University Hospital. PBMC were isolated by density gradient centrifugation over Ficollhypaque (Pharmacia, Uppsala, Sweden). ;For purification of T cells, PBMC were depleted of monocytes by plastic adherence and iron phagocytosis. See Bejarano et al. (1985) Int. J. ;Cancer 35:327- . Non-adherent cells were passed through nylon wool ;25 (Julius et al. (1973) Eur. J. Immunol. 3:645- ), and then NK cells were removed by depletion with magnetic beads. Briefly, following staining with saturating concentrations of anti-CD56 mAb for 30 min at 4°C, cells were washed twice with Hanks's balanced salt solution (HBSS), and subsequently rosetted with magnetic beads coated with sheep anti-mouse 30 IgG (Dynbeads M-450 sheep anti-mouse IgG, Dynal AS, Oslo, Norway) at a bead:cell ratio of 40:1. The mixture was incubated for 30 min at 4°C under gentle shaking before removal of rosetted cells with the magnetic particle concentrator according to the manufacturer's recommendations. ;WO 93/17698 "" PCT/W59J/01 ;- 16 - ;The resulting cell preparations were >99% CD3+, <1% CD14+, <1% CD19+, <1% CD56+. ;For isolation of CD14+ monocytes, PBMC were stained with PE-conjugated CD14 mAb (Becton-Dickinson, Mountain View, CA), 5 washed twice in HBSS and thereafter sorted into CD14+ and CD14" populations using a FACStar-Plus (Becton-Dickinson, Sunnyvale, CA). Reanalysis of the sorted populations showed that more than 99.5% of the purified cells were CD 14+ in some experiments monocytes were isolated from peripheral blood by density centrifugation in a blood component 10 separator, followed by centrifugal elutriation (see Figdor et al. (1984) ;J.Immunol. Methods 68:68- ). These monocyte preparations were ;>95% pure, as judged by nonspecific esterase staining. ;Purified B lymphocytes were obtained by magnetic-bead depletion. Briafly, non-adherent PBMC were incubated with saturating concentrations 15 of cinti-CD3, anti-CD4, anti-CD8, anti-CD14 and anti-CD56 mAbs for 30 miri at 4°C. The cells were washed twice in HBSS and thereafter rosetted with magnetic beads coated with sheep anti-mouse IgG (Dynal AS, Oslo, Norway) at a 40:1 bead:cell ratio. Subsequently, the rosetted cells were depleted as described above. The resulting population consisted of >98% 20 CD19+ cells. ;Proliferation Assay. ;PBMC or highly purified T cells (1 x 105 cells/well), were stimulated by various irradiated (4000 rad) allogeneic stimulator cells. PBMC, CD14+ monocytes, monocytes separated by centrifugal elutriation, and purified B 25 lymphocytes, were used as stimulator cells at R:S ratios of 1:1, 5:1, 5:1, and 3:1, respectively. Cultures were carried out in triplicate in 96-well flat-bottomed microtiter plates in the absence (solid bars; Figures 5-7) or in the presence (hatched bars) of IL-10 in 200^.1 medium. ;Cultures were pulsed with [3H]TdR during the last 10 hours of a 30 5-day incubation period and harvested onto fiberglass filters, and the radioactivity was determined by liquid scintillation counting. The results are expressed in Fig. 4 as c.p.m of [3H]TdR incorporation and represent the means of triplicate cultures. ;249754 ;WO 93/17698 PCT/US93/01665 ;-17 - ;Bulk Cultures. ;PBMC or highly purified T cells were cultured with irradiated allogeneic cells at the R:S ratios described above In 50 ml flasks at a concentration of 1 x 106 responder cells/ml in the presence or in the 5 absence of 100 U/ml of IL-10. Five to six days later the supernatants were collected and frozen at -20°C for determination of their cytokine contents, whereas the cells were recovered for phenotype analysis. ;Fluorescence Analysis ;Cells (105) recovered from the bulk cultures were incubated in 10 V-bottomed microtiter plates (Flow Laboratories, McLean, Va) with 10^il of purified PE-conjugated mAb for 30 min at 4°C. In the double-labeling experiments, the cells were washed twice in 1% normal mouse serum after the FITC labeling, and a PE-conjugated mAb was added. The cells were washed twice with HBSS containing 1% BSA and 0.02M NaNa and 15 thereafter analyzed on a FACScan. ;Lymphokine Determinations. ;Supernatants collected from bulk cultures at day 5 or 6 were assayed for the content of GM-CSF, IFN-y, TNF-a, IL-2, IL-4, IL-5, and 1L-6 by lymphokine-specific ELISA (Bacchetta et al. (1989) J. Immunol. ;20 144:902- ). For the quantification of IL-2 production, cultures were carried out in the presence of 10mg/ml of the anti-IL-2 receptor antibody BB10, in order to minimize IL-2 consumption. Supernatants were harvested after 72 hours and the IL-2 levels were determined by specific ELISA. The sensitivity of the various ELISA were: 40 pg/ml for IL-4; 20 25 pg/ml for IL-2, IL-5 and IL-6; 50 pg/ml for GM-CSF: and 100 pg/ml for TNF-a and IFN-y. ;IL-10 inhibits proliferative responses in MLC. ;To determine the effects of IL-10 on the proliferative responses in classical one-way primary MLC, PBMC were stimulated with allogeneic 30 PBMC in the absence or presence of various concentrations of IL-10. ;Figure 4 shows that IL-10 inhibited the proliferative responses in a dose-dependent fashion. Significant inhibitory effects were already observed at IL-10 concentrations as low as 1 U/ml, whereas maximal inhibitory effects . (ranging from 33 to 95% inhibition in different experiments) were obtained ;249754 ;WO 93/17698 PCT/US93/016v ;-18 - ;at IL-10 concentrations of 100 U/ml. These inhibitory effects of IL-10 were completely neutralized by the anti-IL-10 mAb indicating the specificity of the inhibition (Figure 4c). In fact, the proliferative responses in MLC carried out in the presence of the neutralizing anti-IL-10 mAb were 5 significantly enhanced, indicating that endogenously produced IL-10 is responsible for suppressing proliferative responses in primary MLC. ;Effect of monocytes on the inhibitory effects of IL-10 in MLC. ;It is known that IL-10 strongly reduces the Ag-presenting (AP) capacity of monocytes through down-regulation of class n MHC antigens. 10 In contrast, class n MHC expression and AP-capacity of Epstein-Barr Virus (EBV)-transformed B cells (EBV-transformed lymphoblastoid cell line; EBV-LCL) are not affected by IL-10. ;In this experiment, highly enriched T cells obtained by negative selection were used as responder cells. Purified monocyte populations 15 enriched either by centrifugal elutriation or by direct sorting of CD14+ cells from PBMC, purified B lymphocytes, and EBV-LCL were used as stimulator cells. IL-10 strongly inhibited the proliferative responses induced by allogeneic monocytes independently of whether the monocytes were obtained by centrifugal elutriation (Figure 5a) or were positively sorted by 20 the FACS (Figure 5b); whereas the proliferative responses towards allogeneic EBV-LCL remained unaffected (Figure 5d). As observed with specific proliferative responses to soluble antigens, these results indicate that allospecific proliferation is blocked when allogeneic monocytes, but not when allogeneic EBV-LCL, are used as stimulator cells. The 25 proliferative responses induced by freshly isolated highly purified allogeneic B cells were also inhibited by IL-10 (Figure 5c), indicating that the suppressive effect of IL-10 is also present when B cells are used as stimulators, despite the fact that IL-10 has no measurable effect on class I or class n MHC expression on these cells. ;30 Kinetic experiments revealed that the effect of IL-10 on MLC- ;induced proliferation decreased gradually with time. IL-10 was most effective when added at the beginning of the primary cultures; if added at day 2 or 3 after the onset of the cultures, the effects were only marginal and no clear dose-response effects were observed (Figure 6). These results 35 indicated that IL-10 acts on the early stages of activation of T ceils in MLC. ;I WO 93/17698 ;249754 ;PCT/US93/01665 ;- 19 - ;IL-10 prevents cytokine production in MLC. ;IL-10 has been shown to reduce IFN-y and GM-CSF production by PBMC activated by antl-CD3 or PHA. In addition, IL-10 inhibits the production of cytokines by monocytes. To determine the effect of IL-10 on 5 cytokine production in one-way MLC, allogeneic PBMC were used as responder and as stimulator cells. The cultures were carried out in the absence or in the presence of IL-10 or anti-IL-10 mAb, and supernatants were collected at day 5 and assayed for their cytokine content. Table 1 shows that IFN-y, IL-6, GM-CSF, and TNF-a were produced in MLC, and 10 that IL-10 inhibited the production of these cytokines to various extents. No significant IL-4 production was detected, and the levels of IL-5 were below 100 pg/ml. The production of IL-10 ranged from 1000 to 3000 pg/ml in different experiments. The strongest inhibitory effects of exogenous IL-10 were observed on the production of IFN-y, whereas the weakest inhibitory 15 effects were observed on IL-6 production. ;Increased IFN-y, GM-CSF, and TNF-a levels were observed In supernatants of MLC carried out in the presence of anti-IL-10 mAb (Table 1). These enhancing effects of anti-IL-10 mAb on cytokine production were dose-dependent. Taken together, these results indicate that both 20 endogenous and exogenous IL-10 reduce the production of the cytokines tested. To evaluate the effect of IL-10 on IL-2 production in MLC, and to minimize IL-2 consumption by activated T cells, the cultures were carried out in the presence or in the absence of IL-10 and of the anti-IL-2 receptor mAb BB10. In these experiments, IL-10 prevented IL-2 production in a 25 dose-dependent manner (Figure 7). No measurable levels of IL-2 could be detected when IL-10 was added at 100 U/ml. ;WO 93/17698 ;24 97 5 4 ;PCT/US93/016 ;-20 - ;TABIE 1, ;EFFECT OF EXOGENOUS AND ENDOGENOUS IL-10 ON CYTOKINE PRODUCTION BY ALLOANTIGEN-STIMULATED ;LYMPHOCYTES ;5 ;Condition Cytokine ;IL-10 alL-10 IL-6 IL-10 GM-CSF TNF-a IFN-y ;(U/ml) (M-g/ml) (ng/ml) (ng/ml) (pg/ml) (pg/ml) (ng/ml) ;0 ;22.2 ;572 ;109 ;79 ;<1 ;1 ;20.5 ;41 ;61 ;<1 ;10 ;13.0 ;11 ;38 ;<1 ;100 ;12.1 ;16 ;47 ;<1 ;0.05 ;22.9 ;144 ;144 ;<1 ;0.5 ;25.8 ;165 ;111 ;<1 ;5 ;24.9 ;172 ;51 ;<1 ;0 ;35.4 ;1473 ;1744 ;141 ;29.5 ;1 ;35.3 ;928 ;151 ;20.8 ;10 ;23.9 ;784 ;82 ;18.1 ;100 ;24.7 ;612 ;66 ;11.4 ;0.05 ;36.9 ;2372 ;137 ;33.1 ;0.5 ;39.1 ;2355 ;137 ;45.3 ;5 ;39.1 ;3487 ;250 ;43.8 ;Human PBMC (A) were cultured for 5 days alone or with allogeneic irradiated PBMC (B) in the absence and in the presence of IL-10 or the anti IL-10 mAb 19F1. Production of cytokines was determined in the supernatants by cytokine-specific ELISAs. ;10 Table 1 presents the results of one Experiment out of four. ;The inhibitory effects of IL-10 cannot be restored by exogenous IL-2. ;To investigate whether the inhibitory effects of IL-10 were observed in the presence of exogenous IL-2, MLC were carried out with various concentrations of IL-2. Figure 8 shows that, when increasing amounts of 15 IL-2 were added to MLC in which purified T cells were used as responders and PBMC or purified B cells as stimulators, the proliferation was ;WO 93/17698 ;PCT/US93/01665 ;-21 - ;enhanced both in the absence and in the presence of IL-10. However, the inhibitory effects of IL-10 were still present when IL-2 was added at concentrations up to 100 U/ml; and it should be noted that 10 U/ml are sufficient to saturate high affinity IL-2R. Similarly, addition of 400 U/ml of 5 IL-4, which has T cell growth factor activity, failed to restore the reduced proliferative responses induced by IL-10. Taken together these results indicate that the lack of IL-2 is not the limiting factor responsible for the reduced proliferative responses observed when MLC are carried out in the presence of IL-10. ;l u IL-10 decreases the proportion of activated T cells in MLC. ;In order to determine whether the reduced proliferative responses in MLC in the presence of IL-10 differentially affected CD4+ or CD8+ T cell subsets, the proportions of CD3+CD4+ and CD3+CD8+ cells were duermined. In Table 2 it is shown that the total T cell number decreased 15 by 30 to 60% when the T cells were stimulated with allogeneic PBMC, purified monocytes, or B cells in the presence of IL-10. However, the proportion of CD4+ and CD8+ T cells remained the same, indicating that IL-10 has no preferential effect on each of these T cells subsets. ;In contrast, the proportion of activated T cells expressing CD25 and 20 HLA-DR antigens was consistently reduced in the IL-10-containing cultures. The strongest reduction was usually observed in MLC where purified CD3+ T cells were stimulated with purified B cells or monocytes. ;WO 93/17698 ;219754 ;PCT7US93/0U ;-22 -TABLE 2. ;EFFECT OF IL-10 ON ALLOANTIGEN-STIMULATED T CELLS ;T cell count ;% positive cells ;(xlO^/ml) ;CD3+CD4+ ;CD3+CD8+ ;CD3+CD25+ ;CD3+DR+ ;—a) ;IL-10 ;— ;IL-10 ;— ;IL-10 ;— ;IL-10 ;— ;IL-10 ;EXPT. 1 ;T + PBMC ;1.3 ;0.76 ;69 ;73 ;21 ;24 ;4 ;2 ;3 ;2 ;T + B cells ;1.2 ;0.72 ;55 ;62 ;28 ;28 ;24 ;18 ;19 ;8 ;EXPT. 2 ;T + PBMC ;1.4 ;1.0 ;NDb) ;ND ;ND ;ND ;39 ;27 ;36 ;32 ;T + B cells ;0.90 ;0.68 ;ND ;ND ;ND ;ND ;20 ;8 ;18 ;4 ;T + monocytes0) ;1.2 ;0.40 ;ND ;ND ;ND ;ND ;52 ;24 ;43 ;25 ;EXPT. 3 ;T + PBMC ;1.02 ;0.37 ;77 ;78 ;18 ;16 ;16 ;13 ;15 ;9 ;T + monocyte sd) ;0.50 ;o •—» ;76 ;79 ;19 ;16 ;7 ;4 ;8 ;5 ;a) Indicates absence of IL-10 ;5 b) ND = Not Done c) Negatively sorted monocytes d) Positively sorted monocytes (CD14+). ;Purified T cells were cultured with allogeneic irradiated PBMC, purified B cells or monocytes in the absence or presence of IL-10 (100 10 U/ml). Six days later the recovered T cells were counted and phenotyped by indirect immunofluorescence. ;The present results show that IL-10 reduced in a dose-dependent fashion the proliferation of alloresponsive T cells in classical one-way primary MLC in which allogeneic PBMC of two different donors were used 15 as responder and irradiated stimulator cells, respectively. These inhibitory effects were completely neutralized by an anti-IL-10 mAb, demonstrating ;249754 ;WO 93/17698 PCT/US93/01665 ;-23 - ;the specificity of the inhibition. In addition, it was shown that the proliferative responses were considerably enhanced in the presence of the anti-IL-10 mAb, indicating that endogenous IL-10 production is responsible for suppression of proliferative responses in MLC. ;5 IL-10 also reduced the proliferative responses in MLC where highly purified T cells were used as responders and purified monocytes as stimulators. Interestingly, IL-10 was ineffective when purified T cells were stimulated by irradiated allogeneic EBV-LCL. See Fig 5b. These data are consistent with previous findings that IL-10 strongly blocked the specific 10 proliferative responses of T cells or T cell clones towards soluble antigens or antigenic peptides when monocytes, but not when EBV-LCL, were used as antigen presenting cells (APC). This reduced antigen-presenting capacity was found to be associated with the down-regulatory effect of IL-10 on class n MHC expression on monocytes. In contrast, IL-10 did not 15 affect class n MHC expression on EBV-LCL. From these data it was concluded that the reduced antigen-specific proliferative T cell responses reflected prevention of activation of the responder cells, rather than a direct suppressive effect on T cell proliferation. This conclusion was further supported by the reduced Ca2+ fluxes in the responder T cell clones 20 activated in the presence of IL-10. ;MLC-induced proliferation was inhibited by IL-10 not only when monocytes were used as stimulators, but also when purified B cells were used. Several studies have shown that T cell recognition of MHC alloantigens is mechanistically similar to recognition of viral, bacterial, or 25 other foreign protein antigens. Recently, it has been shown that a significant proportion of MHC class n alloreactive T cell clones recognize processed determinants from human serum proteins in association with allogeneic class H molecules. In contrast to the situation where new MHC-peptide complexes have to be formed to activate antigen-specific T cell 30 clones, there is no evidence to indicate that new allo-MHC-peptide complexes must be formed on monocytes and B cells to stimulate T cells in a MLC. Moreover, IL-10 does not affect class n MHC membrane expression.on human B cells. Therefore, it is unlikely that the inhibitory effects of IL-10 on MLC-induced T cell proliferation can be solely attributed 35 to a down-regulation of MHC class II expression on the monocytes. It is ;Z49754 ;WO 93/17698 PCT/US93/016 ;-24 - ;possible that other mechanisms, yet to be defined, are responsible for the reduced stimulatory capacity of B cells in the presence of IL-10. ;It has been demonstrated that, in addition to cross-linking of the TCR/CD3 complex by specific alloantigen, LFA-1 - ICAM-1 interactions are 5 required for cytokine production by allospecific T cells. Furthermore, CD28 - B7/BB1 interactions have been shown to be necessary for induction of alloantigen-specific activation of resting T cells, resulting in cytokine production, proliferation and cytotoxic activity. B7 is weakly expressed on resting B cells and monocytes, but is elevated following 10 activation of these cells. However, it could be ruled out that the reduced proliferative and cytotoxic alloresponses were due to down-regulatory effects of IL-10 on the expression of either TCR/CD3 or these accessory molecules. IL-10 did not affect TCR/CD3, LFA-1 expression on the responder T cells, or ICAM-1 and B7 expression on B cells or monocytes 15 used as stimulators. ;The data reported here indicate, moreover, that the reduced proliferative responses towards alloantigens also reflect prevention of activation of the responder T cells. IL-10 had to be present from the onset of the cultures to exert its maximal inhibitory effects. In addition, the 20 proportion of activated T cells, as judged by the expression of CD25 and HLA DR antigens, was considerably lower in the IL-10-containing cultures than in the control MLC. Although the total number of CD3+ T cells generated in MLC carried out in the presence of IL-10 was reduced, IL-10 did not preferentially affect the responses of CD4+ or CD8+ T cells, since 25 the proportions of these T cell subsets were comparable to those in control MLC carried out in the absence of IL-10. The reduced expression of CD25 indicates that the inhibitory effect on T cell proliferation in a MLC Is not a mere consequence of the cytokine inhibitory activity of IL-10; and this is supported by the finding that IL-10 also reduces the proliferative responses 30 when exogenous IL-2 is added at concentrations that are sufficient to saturate high affinity IL-2 receptors (Figure 8). Collectively, these data suggest that IL-10 reduces the stimulatory capacity of PBMC, monocytes and normal B cells in MLC. The possibility that IL-10 also has direct effects on the T cells cannot be completely excluded. However, the fact that MLC 35 generated with EBV-LCLs as stimulators are not inhibited by IL-10 argues ;WO 93/17698 ;249754 ;PCT/US93/01665 ;-25 - ;against this notion, unless the EBV-LCL can override the inhibitory effect of IL-10. ;The levels of cytokines produced in MLC in which total allogeneic PBMC were used as responder and stimulator were also significantly 5 reduced in the presence of exogenous IL-10. The amounts of IL-2, IFN-y, TNF-a, and GM-CSF were about two- to three-fold lower than those of control MLC carried out in the absence of IL-10. IL-6 production was much less affected; this may be due to the fact that monocytes present in these cultures already produce considerable amounts of this cytokine very early 10 after activation, before the suppressor activity of IL-10 becomes effective. ;The present results therefore clearly indicate that IL-10 plays an important role in down-regulating alloresponsiveness in vitro. From these in vitro observations, and considering that alloantigens are the major targets for specific immunological rejection of transplanted tissue, one can 15 expect IL-10 to play a role in the induction or maintenance of tolerance following allogeneic transplantation in vivo. ;Example 5 ;The following Example was published after the priority date of the present application by Roncarolo and Bacchetta (1992) in Bone Marrow 20 Transplantation: Proceedings of Foetal and Neonatal Cell Transformation and Retroviral Gene Therapy vol. 9, supplement 1. It provides in vivo evidence for the importance of T cell repertoire in tolerance after fetal stem cell transplantation. ;The T cell repertoire and the mechanism of tolerance was studied in 25 two patients with severe combined immunodeficiency transplanted with HLA mismatched fetal liver stem cells. They are 18 and 6 years old (as of 1993) and healthy, and show normal immunoresponses to recall antigens. Their T cells are of donor origin, whereas monocytes and B cells remained of the host. The NK cells have different sources since in one patient they 30 derive from the donor and in the other one from the host. Despite the HLA mismatch between donor and host cells, no acute or chronic graft-versus-host disease was observed. In vitro experiments with PBMC showed specific nonresponsiveness for the HLA antigens expressed by the host ;249754 ;WO 93/17698 PCT/LS93/016 ;-26 - ;cells. However, an extensive clonal analysis showed that CD4+ and CD8+ host-reactive T cell clones recognizing class n and class I HLA molecules of the host, respectively, were present in the peripheral blood of both patients. Limiting dilution experiments indicated that the frequency of 5 CD8+ host-reactive cells was in the same range as that observed for alloreactive T cells. In contrast, no donor-reactive CD8+ T cells could be isolated. Host-reactive CD4+ and CD8+ T cell clones were normal in their capacity to produce IL-2, IFN-y, GM-CSF, and IL-5, but they failed completely to synthesize IL-4. In addition, CD4+ T cell clones from patient 10 RV secreted very high levels of IL-10. Interestingly, exogenous IL-10 was able to inhibit the proliferative responses of the CD4+ host-reactive T cell clones. These data demonstrate that host-reactive cells are not deleted from the donor T cell repertoire following allogeneic fetal liver stem cell transplantation. Therefore, in vivo tolerance between the host and the 15 donor is maintained by a peripheral autoregulatory mechanism in which cytokines may play a role. ;Bone marrow transplantation from an HLA-identical donor is the therapy of choice for children with severe combined immunodeficiency (SCID). However, transplantation of hemopoietic fetal liver cells (FLT) from 20 a mismatched donor can give sustained engraftment and offer a possible cure in the absence of an HLA-identical marrow donor. See, e.g., ;Touraine et al. (1987) Thymus 10:75- . In such patients, ;immunocompetent T lymphocytes of donor origin, as determined by HLA typing, could be identified within 2-3 months post-transplantation. 25 Although peripheral T lymphocyte chimerism is routinely detected in SCID children transplanted with fetal liver stem cells, lack of B lymphocyte chimerism is not uncommon. The immunologic evaluation of these patients offers a unique possibility to study human T cell differentiation and self/nonself discrimination under in vivo conditions of HLA mismatch 30 between T precursor cells and differentiation environment. ;This report on two SCID children transplanted 18 and 6 years ago with fetal liver stem cells from fully HLA-disparate donors provides evidence for in vivo activity of IL-10 in regulating the immune system, and ;WO 93/17698 ;249754 ;PCT/ US93/01665 ;-27 - ;in particular that IL-10 produced by host-reactive cells may play an important role In down-regulating their responses in vivo. ;Patient SP received two fetal liver stem cell transplantations with simultaneous injection of syngeneic fetal thymus. Although standard HLA 5 typing showed engraftment of cells only from the second donor, a more precise cytofluoro metric analysis, using monoclonal antibodies specific for polymorphic HLA determinants, indicated that 10-20% of the T lymphocytes were actually from the first donor. The second patient, RV, received seven fetal liver stem cell transplantations, but only one donor-10 cell population could be identified in the peripheral blood. See Roncarolo et al. (1986) J. Clin. Investio. 77:673- . ;TABLE 3 ;HLA TYPING ;A ;C ;B ;DR ;DQ ;SP ;Recipient ;3-33 ;6 ;14-47 ;4-5 ;3 ;1 st donor ;2-11 ;4 ;27-62 ;1-8 ;1 ;2nd donor ;1-2 ;7 ;8-18 ;3-9 ;3 ;RV ;Recipient ;2-13 ;4-7 ;x-62 ;8-10 ;4-5 ;Donor ;2-30 ;4 ;8-35 ;11-13 ;6-7 ;In such patients, sustained engraftment of donor T cells was 15 observed after transplantation, whereas B cells and monocytes were of host origin. ;WO 93/17698 ;249754 ;PCT/US93/016 ;-28 - ;TABLE 4. CHIMERISM ;a|3TCR+ T cells •y5TCR+T cells ;Donor origin ;Monocytes B cells ;Host origin ;NK cells Host orislrK> Pa,ient SP ;Donor origin-> Patient RV ;Despite this state of split chimerism within cells of the immune system, complete reconstitution was achieved and normal in vivo and in 5 vitro antibody responses to recall antigens were observed. This is due to the ability of donor T cells to cooperate with the antigen-presenting cells (APC) of the host, across the allogeneic barrier. In particular, tetanus toxoid specific T cell clones of donor origin, isolated from the peripheral blood of patient SP, could recognize the antigen (Ag) processed and 10 presented by host B cells, EBV-transformed B cell lines, and NK cell clones. In contrast, none of the Ag-specific T cell clones tested so far were restricted by the class n HLA antigens expressed by the donor cells. See ;Roncarolo et al. (1988) J. Exot'l Med. 167:15;co- ; Roncarolo et al. ;(19911 J. Immunol. 147:781- . ;15 The chimerism in the NK population differed in the two patients ;(Table 4). In one patient fresh NK cells and NK cell clones showed the HLA phenotype of the host; in the other patient they were of donor origin. These NK cells expressed the CD16 CD56 antigens and displayed normal cytotoxic activity against a variety of NK sensitive targets. These findings 20 suggest that the presence of host or donor functional NK cells does not prevent stable engraftment of donor T cells after fetal stem cell transplantation. Despite the coexistence of lymphoid cells with major ;249754 ;WO 93/17698 PCT/US93/01665 ;-29 - ;and/or minor histocompatibility antigen differences, complete tolerance was achieved in vivo in these two patients, and no signs of acute or chronic graft-versus-host disease were observed. Furthermore, in vitro studies showed that specific nonresponsiveness by the donor T cells 5 towards the HLA antigens expressed by the host was present in a primary mixed leucocyte culture, whereas the proliferative responses against allogeneic cells were normal. At the clonal level, however, the findings have differed. Host-reactive cytotoxic T cell clones of donor origin recognizing either HLA class I or HLA class n antigens have been derived 10 from the peripheral blood of both patients. In contrast to what has been reported in SCID patients transplanted with marrow from HLA-haplo-identical parental donors, no donor-reactive T cell clones could be isolated in these two patients. Furthermore, in patient RV no T cell clones specific for the HLA class I locus A antigens that were shared by the host could be 15 identified. Frequency analysis using a modified limiting dilution assay (see Vandekerckhove et al. (1992) J. ExdI. Med. 175:1033-1043) confirmed the lack of donor reactivity and demonstrated that the frequency of CD8+ host-reactive T cells was in the same range as the frequency of T cells reacting against third party HLA antigens. These findings demonstrate that host-20 reactive cells are not clonally deleted from the donor T cell repertoire. Evidently, such host-reactive T cells are under regulation, since clinical manifestations of graft-versus-host disease were not evident in these patients. It is possible that the host-reactive cells are anergic in vivo and that in vitro stimulation in the presence of IL-2 can break this anergy. 25 Host-reactive T cells display a peculiar pattern of lymphokine production after polyclonal and antigen-specific stimulation. None of the CD4+ or CD8+ T cell clones are able to secrete IL-4, whereas they synthesize normal levels of IL-2, IL-5, and GM-CSF. IFN-y production by these clones is usually very high. In addition, IL-10 production by CD4+ 30 host-reactive clones of patient RV is extremely high after antigen-specific stimulation and seems to be inversely correlated to the low IL-2 synthesis. Furthermore, addition of exogenous IL-10 can significantly suppress the proliferative responses of CD4+ host-reactive T cell clones in vitro. This provides evidence that IL-10 production by host-reactive cells may play an 35 important role in down-regulating their responses in vivo. ;249754 ;WO 93/17698 PCT/US93/016 ;-30 - ;Example 6 ;This example investigates IL-10 production in SCID patients transplanted with allogeneic stem cells. Children with Severe Combined Immunodeficiency (SCID) can be transplanted with HLA mismatched fetal 5 stem cells and immunological reconstitution is obtained also when only the T cells of the donor engraft. Despite tolerance to the host, host-reactive T cells are still present at high frequencies in the peripheral blood of these patients suggesting that an autoregulatory suppressor mechanism may be responsible for the in vivo homeostasis. IL-10 has recently been described 10 as a suppressive cytokine able to prevent activation and proliferation of (allo)antigen specific T cells. Semiquantitative PCR on total peripheral blood mononuclear cells from two patient indicated that the IL-10 mRNA levels were much higher than those of normal donors, whereas IFN-y and GM-CSF mRNAs were comparable. PCR analysis on purified monocytes, 15 B and T cells demonstrated that the monocytes of host origin were responsible for the enhanced IL-10 production. In one patient, high levels of IL-10 mRNA were also observed in purified total T cells. Furthermore, ;high levels of IL-10 production by CD4+ host reactive T cells suppressed in an autoregulatory fashion the proliferation of these cells in response to 20 host cells. These results suggest that high endogenous IL-10 production may account for the suppression of alio reactivity after stem cell transplantation. ;On December 20th 1989, Applicants deposited separate cultures of E. coli MC1061 carrying pH5C, pH15C, and pBCRFI(SRa) with the 25 American Type Culture Collection, Rockville, MD, USA (ATCC), under accession numbers 68191, 68192, and 68193, respectively. These deposits were made under conditions as provided under ATCC's agreement for Culture Deposit for Patent Purposes, which assures that the deposit will be made available to the US Commissioner of Patents and 30 Trademarks pursuant to 35 USC 122 and 37 CFR 1.14, and will be made available to the public upon issue of a U.S. patent, which requires that the deposit be maintained. Availability of the deposited strain is not to be construed as a license to practice the invention in contravention of the ;*4 9754 <br><br>
93/17698 PCT/IJS93/01665 <br><br>
-31 - <br><br>
rights granted under the authority of any government in accordance with its patent laws. <br><br>
The Deposits have been modified to satisfy the requirements of the Budapest Convention. <br><br>
The descriptions of the foregoing embodiments of the invention have been presented for purpose of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention to thereby enable others skilled in the art to best utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims appended hereto. <br><br>
24 97 5 4 <br><br>
WO 93/17698 PCT/US93/016 <br><br>
-32 - <br><br>
SEQUENCE LTSTTNf? <br><br>
(2) INFORMATION FOR SEQ ID NO: Is (i) SEQUENCE CHARACTERISTICS: <br><br>
5 (A) LENGTH: 178 amino acids <br><br>
(B) TYPE: amino acid (D) TOPOLOGY: linear (ii) MOLECULE TYPE: protein (vi) ORIGINAL SOURCE: <br><br>
10 (A) ORGANISM: Homo sapiens <br><br>
(ix) FEATURE: <br><br>
(D) OTHER INFORMATION: Human IL-10 (human cytokine synthesis inhibitory factor, human CSIF) <br><br>
15 (xi) SEQUENCE DESCRIPTION: SEQ ID NO: 1: <br><br>
Met His Ser Ser Ala Leu Leu Cys Cys Leu Val Leu Leu Thr Gly <br><br>
5 10 15 <br><br>
Val Arg Ala Ser Pro Gly Gin Gly Thr Gin Ser Glu Asn Ser Cys <br><br>
20 25 30 <br><br>
20 Thr His Phe Pro Gly Asn Leu Pro Asn Met Leu Arg Asp Leu Arg <br><br>
35 40 45 <br><br>
Asp Ala Phe Ser Arg Val Lys Thr Phe Phe Gin Met Lys Asp Gin <br><br>
50 55 60 <br><br>
Leu Asp Asn Leu Leu Leu Lys Glu Ser Leu Leu Glu Asp Phe Lys 25 65 70 75 <br><br>
Gly Tyr Leu Gly Cys Gin Ala Leu Ser Glu Ket lie Gin Phe Tyr <br><br>
80 85 90 <br><br>
Leu Glu Glu Val Met Pro Gin Ala Glu Asn Gin Asp Pro Asp lie <br><br>
95 100 105 <br><br>
30 Lys Ala His Val Asn Ser Leu Gly Glu Asn Leu Lys Thr Leu Arg <br><br>
110 115 120 <br><br>
Leu Arg Leu Arg Arg Cys His Arg Phe Leu Pro Cys Glu Asn Lys <br><br>
125 130 135 <br><br>
Ser Lys Ala Val Glu Gin Val Lys Asn Ala Phe Asn Lys Leu Gin 35 140 145 150 <br><br>
Glu Lys Gly lie Tyr Lys Ala Met Ser Glu Phe Asp lie Phe lie <br><br>
155 160 165 <br><br>
Asn Tyr lie Glu Ala Tyr Met Thr Met Lys lie Arg Asn <br><br>
170 175 <br><br>
WO 93/17698 <br><br>
249754 <br><br>
PCT/US93/01665 <br><br>
-33 - <br><br>
(2) INFORMATION FOR SEQ ID NO: 2: <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
(A) LENGTH: 170 amino acids 5 (B) TYPE: amino acid <br><br>
(D) TOPOLOGY: linear (ii) MOLECULE TYPE: protein (vi) ORIGINAL SOURCE: <br><br>
(A) ORGANISM: B95-8 Epstein-Barr Virus 10 (ix) FEATURE: <br><br>
(D) OTHER INFORMATION: Viral IL-10 (BCRF1) (xi) SEQUENCE DESCRIPTION: SEQ ID NO: 2: <br><br>
Met Glu Arg Arg Leu Val Val Thr Leu Gin Cys Leu Val Leu Leu <br><br>
5 10 15 <br><br>
15 Tyr Leu Ala Pro Glu Cys Gly Gly Thr Asp Gin Cys Asp Asn Phe <br><br>
20 25 30 <br><br>
Pro Gin Met Leu Arg Asp Leu Arg Asp Ala Phe Ser Arg Val Lys <br><br>
35 40 45 <br><br>
Thr Phe Phe Gin Thr Lys Asp Glu Val Asp Asn Leu Leu Leu Lys 20 50 55 60 <br><br>
Glu Ser Leu Leu Glu Asp Phe Lys Gly Tyr Leu Gly Cys Gin Ala <br><br>
65 70 75 <br><br>
Leu Ser Glu Met lie Gin Phe Tyr Leu Glu Glu Val Met Pro Gin <br><br>
80 85 90 <br><br>
25 Ala Glu Asn Gin Asp Pro Glu Ala Lys Asp His Val Asn Ser Leu <br><br>
95 100 105 <br><br>
Gly Glu Asn Leu Lys Thr Leu Arg Leu Arg Leu Arg Arg Cys His <br><br>
110 115 120 <br><br>
Arg Phe Leu Pro Cys Glu Asn Lys Ser Lys Ala Val Glu Gin lie 30 125 130 135 <br><br>
Lys Asn Ala Phe Asn Lys Leu Gin Glu Lys Gly lie Tyr Lys Ala <br><br>
140 145 150 <br><br>
Met Ser Glu Phe Asp lie Phe lie Asn Tyr lie Glu Ala Tyr Met <br><br>
155 160 165 <br><br>
35 Thr lie Lys Ala Arg <br><br>
170 <br><br>
(2) INFORMATION FOR SEQ ID NO: 3: <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
WO 93/17698 <br><br>
-34 - <br><br>
PCT/US93/016, <br><br>
24 9754 <br><br>
(A) LENGTH: 160 amino acids <br><br>
(B) TYPE: amino acid (D) TOPOLOGY: linear <br><br>
(ii) MOLECULE TYPE: protein 5 (ix) FEATURE: <br><br>
(D) OTHER INFORMATION: Mature human IL-10 (human cytokine synthesis inhibitory factor, human CSIF) <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 3: <br><br>
10 Ser Pro Gly Gin Gly Thr Gin Ser Glu Asn Ser Cys Thr His Phe <br><br>
5 10 15 <br><br>
Pro Gly Asn Leu Pro Asn Met Leu Arg Asp Leu Arg Asp Ala Phe <br><br>
20 25 30 <br><br>
Ser Arg Val Lys Thr Phe Phe Gin Met Lys Asp Gin Leu Asp Asn 15 35 40 45 <br><br>
Leu Leu Leu Lys Glu Ser Leu Leu Glu Asp Phe Lys Gly Tyr Leu <br><br>
50 55 60 <br><br>
Gly Cys Gin Ala Leu Ser Glu Met lie Gin Phe Tyr Leu Glu Glu <br><br>
65 70 75 <br><br>
20 Val Met Pro Gin Ala Glu Asn Gin Asp Pro Aso lie Lys Ala His <br><br>
80 85 90 <br><br>
Val Asn Ser Leu Gly Glu Asn Leu Lys Thr Leu Arg Leu Arg Leu <br><br>
95 100 105 <br><br>
Arg Arg Cys His Arg Phe Leu Pro Cys Glu Asn Lys Ser Lys Ala 25 110 115 120 <br><br>
Val Glu Gin Val Lys Asn Ala Phe Asn Lys Leu Gin Glu Lys Gly <br><br>
125 130 135 <br><br>
lie Tyr Lys Ala Met Ser Glu Phe Asp lie Phe lie Asn Tyr lie <br><br>
140 145 150 <br><br>
30 Glu Ala Tyr Met Thr Met Lys lie Arg Asn <br><br>
155 160 <br><br>
(2) INFORMATION FOR SEQ ID NO: 4: (i) SEQUENCE CHARACTERISTICS: 35 (A) LENGTH: 147 amino acids <br><br>
(B) TYPE: amino acid (D) TOPOLOGY: linear (ii) MOLECULE TYPE: protein (ix) FEATURE: <br><br>
WO 93/17698 <br><br>
-PCT/US93/01665 <br><br>
2? 9 7 5 4 <br><br>
-35 - <br><br>
(D) OTHER INFORMATION: Mature viral IL-10 (BCRF1) (xi) SEQUENCE DESCRIPTION: SEQ ID NO: 4: <br><br>
Thr Asp Gin Cys Asp Asn Phe Pro Gin Met Leu Arg Asp Leu Arg <br><br>
5 10 15 <br><br>
5 Asp Ala Phe Ser Arg Val Lys Thr Phe Phe Gin Thr Lys Asp Glu <br><br>
20 25 30 <br><br>
Val Asp Asn Leu Leu Leu Lys Glu Ser Leu Leu Glu Asp Phe Lys <br><br>
35 40 45 <br><br>
Gly Tyr Leu Gly Cys Gin Ala Leu Ser Glu Met lie Gin Phe Tyr 10 50 55 60 <br><br>
Leu Glu Glu Val Met Pro Gin Ala Glu Asn Gin Asp Pro Glu Ala <br><br>
65 70 75 <br><br>
Lys Asp His Val Asn Ser Leu Gly Glu Asn Leu Lys Thr Leu Arg <br><br>
80 85 90 <br><br>
15 Leu Arg Leu Arg Arg Cys His Arg Phe Leu Pro Cys Glu Asn Lys <br><br>
95 100 105 <br><br>
Ser Lys Ala Val Glu Gin lie Lys Asn Ala Phe Asn Lys Leu Gin <br><br>
110 115 120 <br><br>
Glu Lys Gly lie Tyr Lys Ala Met Ser Glu Phe Asp lie Phe lie 20 125 130 135 <br><br>
Asn Tyr lie Glu Ala Tyr Met Thr lie Lys Ala Arg <br><br>
140 145 <br><br>
(2) INFORMATION FOR SEQ ID NO: 5: <br><br>
25 (i) SEQUENCE CHARACTERISTICS: <br><br>
(A) LENGTH: 15 base pairs <br><br>
(B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear 30 (ix) FEATURE: <br><br>
(D) OTHER INFORMATION: As double-stranded fragment, encodes a consensus ribosome binding site. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 5: <br><br>
35 GTAAGGAGGT TTAAC 15 <br><br>
(2) INFORMATION FOR SEQ ID NO: 6: (i) SEQUENCE CHARACTERISTICS: <br><br>
WO 93/17698 <br><br>
^CT/USW/OU <br><br>
24 9 75 <br><br>
-36 - <br><br>
(A) LENGTH: 60 base pairs <br><br>
(B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear 5 (ix) FEATURE: <br><br>
(D) OTHER INFORMATION: T and GGTAC at positions 51 and 56-60 differ from those of the native sequence; together with SEQ ID NO: 7, SEQ ID NO: 6 forms double-stranded Fragment 1A/B of 10 synthetic CSIF gene with 4-base sticky end at positions 57-60. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 6: <br><br>
AGCCCAGGCC AGGGCACCCA GTCTGAGAAC AGCTGCACCC ACTTCCCAGG 50 TAACCGGTAC 60 <br><br>
15 <br><br>
(2) INFORMATION FOR SEQ ID NO: 7: <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
(A) LENGTH: 56 base pairs <br><br>
(B) TYPE: nucleic acid 20 (C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear (ix) FEATURE: <br><br>
(D) OTHER INFORMATION: C and A at positions 1 and 6 differ from those of the native sequence; 25 together with SEQ ID NO: 6, SEQ ID NO: 7 forms double-stranded Fragment 1A/B of synthetic CSIF gene. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 7: <br><br>
CGGTTACCTG GGAAGTGGGT GCAGCTGTTC TCAGACTGGG TGCCCTGGCC 50 30 TGGGCT 56 <br><br>
(2) INFORMATION FOR SEQ ID NO: 8: (i) SEQUENCE CHARACTERISTICS: (A) LENGTH: 62 base pairs <br><br>
_ PCT/US93/01665 <br><br>
249754 <br><br>
(B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear (ix) FEATURE: <br><br>
5 (D) OTHER INFORMATION: T position 2 differs from that of the native sequence; together with SEQ ID NO: 9, SEQ ID NO: 8 forms double-stranded Fragment 2A/B of synthetic CSIF gene with 5- and 9-base sticky ends at positions 1-5 and 54-62. 10 (xi) SEQUENCE DESCRIPTION: SEQ ID NO: 8: <br><br>
GTAACCTGCC TAACATGCTT CGAGATCTCC GAGATGCCTT CAGCAGAGTG 50 AAGACTTTCT TT 62 <br><br>
(2) INFORMATION FOR SEQ ID NO: 9: <br><br>
15 (i) SEQUENCE CHARACTERISTICS: <br><br>
(A) LENGTH: 48 base pairs <br><br>
(B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear 20 (ix) FEATURE: <br><br>
(D) OTHER INFORMATION: Together with SEQ ID NO: 8, SEQ ID NO: 9 forms double-stranded Fragment 2A/B of synthetic CSIF gene. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 9: <br><br>
25 CTTCACTCTG CTGAAGGCAT CTCGGAGATC TCGAAGCATG TTAGGCAG 4 8 <br><br>
(2) INFORMATION FOR SEQ ID NO: 10: <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
(A) LENGTH: 35 base pairs 30 (B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear (ix) FEATURE: <br><br>
WO 93/17698 <br><br>
-37 - <br><br>
WO 93/17698 <br><br>
249754 <br><br>
PCT/US93/016 <br><br>
-38 - <br><br>
(D) OTHER INFORMATION: C and T at positions 30 and 32 differ from those of the native sequence; together with SEQ ID NO: 11, SEQ ID NO: 10 forms double-stranded Fragment 3A/B of synthetic CSIF gene. <br><br>
5 <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 10: <br><br>
CAAATGAAGG ATCAGCTGGA CAACTTGTTC TTAAG 35 <br><br>
(2) INFORMATION FOR SEQ ID NO: 11: <br><br>
10 <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
(A) LENGTH: 44 base pairs 15 (B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear <br><br>
20 <br><br>
(ix) FEATURE: <br><br>
(D) OTHER INFORMATION: A and G at positions 4 and 6 differ from those of the native sequence; together with 25 SEQ ID NO: 10, SEQ ID NO: 11 forms double-stranded <br><br>
Fragment 3A/B of synthetic CSIF gene with 9-base sticky end at positions 36-44. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 11: <br><br>
30 CTTAAGAACA AGTTGTCCAG CTGATCCTTC ATTTGAAAGA AAGT 44 <br><br>
(2) INFORMATION FOR SEQ ID NO: 12: <br><br>
35 <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
- <br><br>
WO 93/17698 PCI7T!S95/0fB55 1 <br><br>
-39 - <br><br>
(A) LENGTH: 69 base pairs <br><br>
(B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear <br><br>
(ix) FEATURE: <br><br>
10 <br><br>
(D) OTHER INFORMATION: T at position 69 differs from that of the native sequence; together with SEQ ID NO: 13, SEQ ID NO: 12 forms double-stranded Fragment 4A/B of synthetic CSIF gene. <br><br>
15 <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 12: <br><br>
GAGTCCTTGC TGGAGGACTT TAAGGGTT&C CTGGGTTGCC AAGCCTTGTC 50 TGAGATGATC CAGTTTTAT 69 <br><br>
20 (2) INFORMATION FOR SEQ ID NO: 13: <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
(A) LENGTH: 73 base pairs <br><br>
25 <br><br>
(B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single 30 (D) TOCOLOGY: linear <br><br>
(ix) FEATURE: <br><br>
(D) OTHER INFORMATION: T and A at positions 2 and 35 5 differ from those of the native sequence; together with <br><br>
WO 93/17698 <br><br>
24975 <br><br>
PCT/US93/0U <br><br>
-40 - <br><br>
SEQ ID NO: 12, SEQ ID NO: 13 forms double-stranded Fragment 4A/B of synthetic CSIF gene with 4-base sticky end at positions 1-4. <br><br>
5 (xi) SEQUENCE DESCRIPTION: SEQ ID NO: 13: <br><br>
CTAGATAAAA CTGGATCATC TCAGACAAGG CTTGGCAACC CAGGTAACCC 50 TTAAAGTCCT CCAGCAAGGA CTC 73 <br><br>
(2) INFORMATION FOR SEQ ID NO: 14 <br><br>
10 <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
(A) LENGTH: 61 base pairs 15 (B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear <br><br>
20 <br><br>
(ix) FEATURE: <br><br>
(D) OTHER INFORMATION: A, T and G at positions 3, 57 and 61 differ from those of the native sequence; 25 together with SEQ ID NO: 15, SEQ ID NO: 14 forms double-stranded Fragment 5A/B of synthetic CSIF gene. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 14: <br><br>
CTAGAGGAGG TGATGCCCCA AGCTGAJAAC CAAGACCCAG ACATCAAGGC 50 30 GCATGTTAAC G 61 <br><br>
(2) INFORMATION FOR SEQ ID NO: 15: (i) SEQUENCE CHARACTERISTICS: <br><br>
WO 93/17698 <br><br>
249754 <br><br>
PCT/US93/01665 <br><br>
-41 - <br><br>
(A) LENGTH: 65 base pairs <br><br>
(B) TYPE: nucleic acid <br><br>
5 <br><br>
(C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear <br><br>
10 (ix) FEATURE: <br><br>
(D) OTHER INFORMATION: TCGAC, A and T at positions 1-5, 9 and 63 differ from those of the native sequence; together with SEQ ID NO: 14, SEQ ID NO: 15 forms double-15 stranded Fragment 5A/B of synthetic CSIF gene with 4-base sticky end at positions 1-4. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 15: <br><br>
TCGACGTTAA CATGCGCCTT GATGTCTGGG TCTTGGTTCT CAGCTTGGGG 50 20 CATCACCTCC TCTAG 65 <br><br>
(2) INFORMATION FOR SEQ ID NO: 16: <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
25 <br><br>
(A) LENGTH: 63 base pairs <br><br>
(B) TYPE: nucleic acid <br><br>
30 (C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear (ix) FEATURE: <br><br>
35 <br><br>
WO 93/17698 <br><br>
2442.54 <br><br>
-42 - <br><br>
(D) OTHER INFORMATION: CTGCA at positions 58-63 differ from those of the native sequence; together with SEQ ID NO: 17, SEQ ID NO: 16 forms double-stranded Fragment 6A/B of synthetic CSIF gene with 4-base sticky 5 end at positions 59-63. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 16: <br><br>
AACTCCCTGG GGGAGAACCT GAAGACCCTC AGGCTGAGGC TACGGCGCTG 50 TCATCGATCT GCA 63 <br><br>
10 <br><br>
(2) INFORMATION FOR SEQ ID NO: 17: <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
15 (A) LENGTH: 59 base pairs <br><br>
(B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single <br><br>
20 <br><br>
(D) TOPOLOGY: linear (ix) FEATURE: <br><br>
25 (D) OTHER INFORMATION: G at position 1 differs from that of the native sequence; together with SEQ ID NO: 16, SEQ ID NO: 17 forms double-stranded Fragment 6A/B of synthetic CSIF gene. <br><br>
30 (xi) SEQUENCE DESCRIPTION: SEQ ID NO: 17: <br><br>
GATCGATGAC AGCGCCGTAG CCTCAGCCTG AGGGTCTTCA GGTTCTCCCC 50 CAGGGAGTT 5 9 <br><br>
(2) INFORMATION FOR SEQ ID NO: 18: <br><br>
WO 93/17698 <br><br>
2UZ5J <br><br>
-43 - <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
(A) LENGTH: 60 base pairs <br><br>
5 <br><br>
(B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single <br><br>
10 <br><br>
(D) TOPOLOGY: linear <br><br>
(ix) FEATURE: <br><br>
(D) OTHER INFORMATION: C, G and GCATG at positions 15 51, 54 and 56-60 differ from those of the native sequence; together with SEQ ID NO: 19, SEQ ID NO: 18 forms double-stranded Fragment 7A/B of synthetic CSIF gene with 2- and 4-base sticky ends at positions 1-2 and 57-60. <br><br>
20 (xi) SEQUENCE DESCRIPTION: SEQ ID NO: 18: <br><br>
CGATTTCTTC CCTGTCAAAA CAAGAGCAAG GCCGTGGAGC AGGTGAAGAA 50 CGCGTGCATG 60 <br><br>
(2) INFORMATION FOR SEQ ID NO: 19: <br><br>
25 <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
(A) LENGTH: 54 base pairs <br><br>
30 <br><br>
(B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single <br><br>
35 <br><br>
(D) TOPOLOGY: linear <br><br>
WO 93/17698 <br><br>
24 9 7 5 4 <br><br>
PCT/^S93/016, <br><br>
-44 - <br><br>
(ix) FEATURE: <br><br>
(D) OTHER INFORMATION: C, C and G at positions 1, 3 and 6 differ from those of the native sequence; 5 together with SEQ ID NO: 18, SEQ ID NO: 19 forms double-stranded Fragment 7A/B of synthetic CSIF gene. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 19: <br><br>
CACGCGTTCT TCACCTGCTC CACGGCCTTG CTCTTGTTTT GACAGGGAAG 50 10 AAAT 54 <br><br>
(2) INFORMATION FOR SEQ ID NO: 20: <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
15 <br><br>
(A) LENGTH: 58 base pairs <br><br>
(B) TYPE: nucleic acid <br><br>
20 (C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear (ix) FEATURE: <br><br>
25 <br><br>
30 <br><br>
(D) OTHER INFORMATION: Together with SEQ ID NO: 21, SEQ ID NO: 20 forms double-stranded Fragment 8A/B of synthetic CSIF gene with 4- and 9-base sticky ends at positions 1-4 and 50-58. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 20: <br><br>
CGCGTTTAAT AATAAGCTCC AAGACAAAGG CATCTACAAA GCCATGAGTG 50 AGTTTGAC 58 <br><br>
WO 93/17698 <br><br>
24975 <br><br>
PCT /US93/01665 <br><br>
-45 - <br><br>
(2) INFORMATION FOR SEQ ID NO: 21: <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
5 (A) LENGTH: 45 base pairs <br><br>
(B) TYPE: nucleic acid <br><br>
(C) STRANDEDNESS: single <br><br>
10 <br><br>
(D) TOPOLOGY: linear (ix) FEATURE: <br><br>
15 (D) OTHER INFORMATION: Together with SEQ ID NO: <br><br>
20, SEQ ID NO: 21 forms double-stranded Fragment 8A/B of synthetic CSIF gene. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 21: 20 ACTCATGGCT TTGTAGATGC CTTTGTCTTG GAGCTTATTA TTAAA <br><br>
(2) INFORMATION FOR SEQ ID NO: 22: <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
25 <br><br>
(A) LENGTH: 51 base pairs <br><br>
(B) TYPE: nucleic acid <br><br>
30 (C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear (ix) FEATURE: <br><br>
35. <br><br>
WO 93/17698 <br><br>
24 9754 <br><br>
PCT/US93/016i <br><br>
-46 - <br><br>
(D) OTHER INFORMATION: Together with SEQ ID NO: 23, SEQ ID NO: 22 forms double-stranded Fragment 9A/B of synthetic CSIF gene. <br><br>
5 (xi) SEQUENCE DESCRIPTION: SEQ ID NO: 22: <br><br>
ATCTTCATCA ACTACATAGA AGCCTACATG ACAATGAAGA TACGAAACTG A 51 <br><br>
(2) INFORMATION FOR SEQ ID NO: 23: <br><br>
10 (i) SEQUENCE CHARACTERISTICS: <br><br>
(A) LENGTH: 64 base pairs <br><br>
(B) TYPE: nucleic acid <br><br>
15 <br><br>
(C) STRANDEDNESS: double <br><br>
(D) TOPOLOGY: linear <br><br>
20 (ix) FEATURE: <br><br>
(D) OTHER INFORMATION: AGCT at positions 1-4 differ from those of the native sequence; together with SEQ ID NO: 22, SEQ ID NO: 23 forms double-stranded 25 Fragment 9A/B of synthetic CSIF gene with 4- and 9-base sticky ends at positions 1-4 and 56-64. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 23: <br><br>
AGCTTCAGTT TCGTATCTTC ATTGTCATGT AGGCTTCTAT GTAGTTGATG 50 30 AAGATGTCAA ACTC 64 <br><br>
(2) INFORMATION FOR SEQ ID NO: 24: <br><br>
(i) SEQUENCE CHARACTERISTICS: <br><br>
WO 93/17698 <br><br>
-47 - <br><br>
(A) LENGTH: 519 base pairs <br><br>
(B) TYPE: nucleic acid <br><br>
5 <br><br>
(C) STRANDEDNESS: single <br><br>
(D) TOPOLOGY: linear 10 (ix) FEATURE: <br><br>
(D) OTHER INFORMATION: Encodes viral IL-10. <br><br>
(xi) SEQUENCE DESCRIPTION: SEQ ID NO: 24: <br><br>
15 AATTC ATG GAG CGA AGG TTA GTG GTC ACT CTG CAG TGC CTG GTG 44 <br><br>
CTG <br><br>
CTT <br><br>
TAC <br><br>
CTG <br><br>
GCA <br><br>
CCT <br><br>
GAG <br><br>
TGT <br><br>
GGA <br><br>
GGT <br><br>
ACA <br><br>
GAC <br><br>
CAA <br><br>
TGT <br><br>
86 <br><br>
GAC <br><br>
AAT <br><br>
TTT <br><br>
CCC <br><br>
CAA <br><br>
ATG <br><br>
TTG <br><br>
AGG <br><br>
GAC <br><br>
CTA <br><br>
AGA <br><br>
GAT <br><br>
GCC <br><br>
TTC <br><br>
128 <br><br>
AGT <br><br>
CGT <br><br>
GTT <br><br>
AAA <br><br>
ACC <br><br>
TTT <br><br>
TTC <br><br>
CAG <br><br>
ACA <br><br>
AAG <br><br>
GAC <br><br>
GAG <br><br>
GTA <br><br>
GAT <br><br>
170 <br><br>
AAC <br><br>
CTT <br><br>
TTG <br><br>
CTC <br><br>
AAG <br><br>
GAG <br><br>
TCT <br><br>
CTG <br><br>
CTA <br><br>
GAG <br><br>
GAC <br><br>
TTT <br><br>
AAG <br><br>
GGC <br><br>
212 <br><br>
TAC <br><br>
CTT <br><br>
GGA <br><br>
TGC <br><br>
CAG <br><br>
GCC <br><br>
CTG <br><br>
TCA <br><br>
GAA <br><br>
ATG <br><br>
ATC <br><br>
CAA <br><br>
TTC <br><br>
TAC <br><br>
254 <br><br>
CTG <br><br>
GAG <br><br>
GAA <br><br>
GTC <br><br>
ATG <br><br>
CCA <br><br>
CAG <br><br>
GCT <br><br>
GAA <br><br>
AAC <br><br>
CAG <br><br>
GAC <br><br>
CCG <br><br>
GAG <br><br>
296 <br><br>
GCT <br><br>
AAG <br><br>
GAC <br><br>
CAT <br><br>
GTC <br><br>
AAT <br><br>
TCT <br><br>
TTG <br><br>
GGT <br><br>
GAA <br><br>
AAT <br><br>
CTA <br><br>
AAG <br><br>
ACC <br><br>
338 <br><br>
CTA <br><br>
CGG <br><br>
CTC <br><br>
CGC <br><br>
CTG <br><br>
CGC <br><br>
AGG <br><br>
TGC <br><br>
CAC <br><br>
AGG <br><br>
TTC <br><br>
CTG <br><br>
CCG <br><br>
TGT <br><br>
380 <br><br>
GAG <br><br>
AAC <br><br>
AAG <br><br>
AGT <br><br>
AAA <br><br>
GCT <br><br>
GTG <br><br>
GAA <br><br>
CAG <br><br>
ATA <br><br>
AAA <br><br>
AAT <br><br>
GCC <br><br>
TTT <br><br>
422 <br><br>
AAC <br><br>
AAG <br><br>
CTG <br><br>
CAG <br><br>
GAA <br><br>
AAA <br><br>
GGA <br><br>
ATT <br><br>
TAC <br><br>
AAA <br><br>
GCC <br><br>
ATG <br><br>
AGT <br><br>
GAA <br><br>
464 <br><br>
TTT <br><br>
GAC <br><br>
ATT <br><br>
TTT <br><br>
ATT <br><br>
AAC <br><br>
TAC <br><br>
ATA <br><br>
GAA <br><br>
GCA <br><br>
TAC <br><br>
ATG <br><br>
ACA <br><br>
ATT <br><br>
506 <br><br>
AAA <br><br>
GCC <br><br>
AGG <br><br>
TGA <br><br>
G <br><br>
519 <br><br></p>
</div>
Claims (8)
1. The use of interleukin-10 for the manufacture of a medicament for the treatment of graft-vs.-host disease.<br><br>
2. The use as claimed in claim 1 wherein the medicament manufactured is an implantable or injectable delivery system.<br><br>
3. The use of interleukin-10 for preparing a pharmaceutical composition useful for treating graft-vs.-host disease.<br><br>
4. The use as claimed in any one of claims 1 to 3 wherein said interleukin-10 is selected from the group consisting of viral interleukin-10 and human interleukin-10.<br><br>
5. The use as claimed in any one of claims 1 to 4 wherein said iniorleukin-10 is a post-translational variant or mutein.<br><br>
6. The use as claimed in claim 4 wherein said interleukin-10 is human interleukin-10.<br><br>
7. The use as claimed in claim 6 wherein said interleukin-10 is defined herein in SEQ ID N0.3.<br><br>
8. Use of interleukin-10 as defined in claim 1 or claim 3 substantially as herein described with reference to any example thereof and with or without reference to the accompanying drawings.<br><br> END OF CLAIMS<br><br> </p> </div>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84620892A | 1992-03-04 | 1992-03-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
NZ249754A true NZ249754A (en) | 1997-06-24 |
Family
ID=25297256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NZ249754A NZ249754A (en) | 1992-03-04 | 1993-03-02 | Interleukin-10 and its use in inhibiting graft vs host disease or tissue rejection |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0629130A1 (en) |
JP (1) | JPH07504437A (en) |
KR (1) | KR950700079A (en) |
CN (1) | CN1079166A (en) |
AU (1) | AU679908B2 (en) |
CA (1) | CA2131524A1 (en) |
IL (1) | IL104916A0 (en) |
MX (1) | MX9301192A (en) |
NZ (1) | NZ249754A (en) |
WO (1) | WO1993017698A1 (en) |
ZA (1) | ZA931489B (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08510719A (en) * | 1993-02-01 | 1996-11-12 | ユニヴェルシテ リブル ドゥ ブリュッセル アンスティテュション ダンセニュマン ユニヴェルシテル | Use of a pharmaceutical composition containing an effective amount of interleukin-10, its analogs and / or agonists |
US5573764A (en) * | 1994-01-21 | 1996-11-12 | Genetics Institute, Inc. | Use of interleukin-12 to prevent graft versus host disease |
JPH10502249A (en) * | 1994-07-05 | 1998-03-03 | スティーノ・リサーチ・グループ・アクティーゼルスカブ | Immunomodulator |
WO1996029082A1 (en) * | 1995-03-23 | 1996-09-26 | Governors Of Dalhousie College And University | A process of prolonging organ allograft survival |
US6022536A (en) * | 1995-08-09 | 2000-02-08 | Schering Corporation | Combined use of interleukin 10 and cyclosporin for immunosuppression therapy |
EP0845994A1 (en) * | 1995-08-09 | 1998-06-10 | Schering Corporation | Combined use of interleukin-10 and cyclosporin for immunosuppression therapy |
WO1997026278A1 (en) | 1996-01-18 | 1997-07-24 | Steeno Research Group A/S | Synthetic il-10 analogues |
US6090413A (en) * | 1996-03-25 | 2000-07-18 | Lee; Timothy D. | Process of prolonging organ allograft survival |
WO1998010792A1 (en) * | 1996-09-11 | 1998-03-19 | Prendergast Patrick T | Immune direction therapy |
WO1998020033A2 (en) * | 1996-11-06 | 1998-05-14 | Schering Corporation | RENATURATION AND PURIFICATION OF VIRAL INTERLEUKIN-10 (vIL-10) |
US6358506B1 (en) | 1997-11-05 | 2002-03-19 | University Of Southern California | Use of cytokines and mitogens to inhibit pathological immune responses |
WO1999030730A1 (en) * | 1997-12-15 | 1999-06-24 | Universite Laval | Methods and compositions for improving the success of cell transplantation in a host |
EP1061949B1 (en) * | 1998-03-03 | 2009-07-15 | University of Southern California | Cytokines and mitogens to inhibit graft-versus-host disease |
US6803036B1 (en) | 1998-03-03 | 2004-10-12 | University Of Southern California | Use of cytokines, cells and mitogens to inhibit graft versus host disease |
JP5008810B2 (en) | 2000-04-11 | 2012-08-22 | ユニバーシティ オブ サザン カリフォルニア | Method for preventing transplant rejection using TGF-β to induce inhibitory T cells |
CN105106214A (en) * | 2015-08-05 | 2015-12-02 | 范国煌 | Novel Lck small-molecule inhibitor for inhibiting graft-versus-host disease |
SG10201606949QA (en) | 2016-08-19 | 2018-03-28 | Singapore Health Serv Pte Ltd | Immunosuppressive composition for use in treating immunological disorders |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL94878A (en) * | 1989-06-28 | 2003-01-12 | Schering Corp | Cytokine synthesis inhibitory factor, antagonists thereof and methods of using same |
-
1993
- 1993-03-02 ZA ZA931489A patent/ZA931489B/en unknown
- 1993-03-02 NZ NZ249754A patent/NZ249754A/en unknown
- 1993-03-02 CA CA002131524A patent/CA2131524A1/en not_active Abandoned
- 1993-03-02 WO PCT/US1993/001665 patent/WO1993017698A1/en not_active Application Discontinuation
- 1993-03-02 JP JP5515744A patent/JPH07504437A/en active Pending
- 1993-03-02 EP EP93906212A patent/EP0629130A1/en not_active Withdrawn
- 1993-03-02 KR KR1019940703075A patent/KR950700079A/en not_active Application Discontinuation
- 1993-03-02 AU AU37328/93A patent/AU679908B2/en not_active Ceased
- 1993-03-02 IL IL104916A patent/IL104916A0/en unknown
- 1993-03-03 CN CN93104481A patent/CN1079166A/en active Pending
- 1993-03-03 MX MX9301192A patent/MX9301192A/en unknown
Also Published As
Publication number | Publication date |
---|---|
ZA931489B (en) | 1993-10-28 |
KR950700079A (en) | 1995-01-16 |
JPH07504437A (en) | 1995-05-18 |
WO1993017698A1 (en) | 1993-09-16 |
IL104916A0 (en) | 1993-07-08 |
MX9301192A (en) | 1994-08-31 |
CA2131524A1 (en) | 1993-09-16 |
AU679908B2 (en) | 1997-07-17 |
EP0629130A1 (en) | 1994-12-21 |
CN1079166A (en) | 1993-12-08 |
AU3732893A (en) | 1993-10-05 |
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