EP1032583A1 - Immunisation active contre les antigenes associes a l'angiogenese - Google Patents
Immunisation active contre les antigenes associes a l'angiogeneseInfo
- Publication number
- EP1032583A1 EP1032583A1 EP99911258A EP99911258A EP1032583A1 EP 1032583 A1 EP1032583 A1 EP 1032583A1 EP 99911258 A EP99911258 A EP 99911258A EP 99911258 A EP99911258 A EP 99911258A EP 1032583 A1 EP1032583 A1 EP 1032583A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- immunogen
- mammal
- molecule
- antibody
- antigen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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Classifications
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- A—HUMAN NECESSITIES
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- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0008—Antigens related to auto-immune diseases; Preparations to induce self-tolerance
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/46—Cellular immunotherapy
- A61K39/461—Cellular immunotherapy characterised by the cell type used
- A61K39/4615—Dendritic cells
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61K39/46—Cellular immunotherapy
- A61K39/462—Cellular immunotherapy characterized by the effect or the function of the cells
- A61K39/4622—Antigen presenting cells
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- A—HUMAN NECESSITIES
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- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/46—Cellular immunotherapy
- A61K39/464—Cellular immunotherapy characterised by the antigen targeted or presented
- A61K39/4643—Vertebrate antigens
- A61K39/4644—Cancer antigens
- A61K39/464454—Enzymes
Definitions
- the present invention overcomes these problems by using active specific immunotherapy against angiogenesis target molecules to inhibit angiogenesis.
- Such methods of immunotherapy against angiogenic molecules include modification of immunogens to cause an immune response against the angiogenic molecules.
- Modification of the target antigen can be achieved by, for example, conjugation of immunogenic reagents to the antigen (see US Patent Nos. 5,334,379); haptenization of the antigen (see U.S. Patent Nos. 4,778,752 and 5,290,551); the use of adjuvants bound to, or administered with, the target antigen; binding peptide fragments to the antigen; binding the target antigen to MHC class I and class II restricted antigens (see U.S. Patent No.
- Another method where immunity is induced to an angiogenesis target molecule is that of using an anti-idiotypic antibody bearing the internal image of the target antigen. Since the mimicry of the target "self antigen by the anti-idiotype is likely to be imperfect, such anti-idiotypes will break tolerance to a self antigen, although administration of the self antigen is not able to do so. It has been previously shown that anti-idiotypes that bear the internal image of carcinoembryonic antigen (CEA) can induce anti-CEA antibodies in patients with colorectal carcinoma, while CEA itself cannot do so. Therefore, an alternative approach to using the actual "self angiogenesis target antigen as a vaccine is to use an anti-idiotypic antibody that mimics the antigen, bears an internal image of the antigen, and elicits an immune response.
- CEA carcinoembryonic antigen
- An anti-idiotypic antibody termed either an AB2 or an anti-idiotype, is one produced in response to the presence of an antibody in an immunologically active system.
- Anti-idiotypes are antibodies directed against the antigen- combining region or variable region (known as the idiotype) of another antibody molecule.
- Anti-idiotypic antibodies have been studied as potential vaccines against pathogenic organisms (Kennedy, R. C. et al., 1986, Science 232:220; Reagan, K. J. et al., 1983, J. Virol. 48:660; McNamara, M. K. et al., 1984, Science 226:1325; Sachs, D. L et al., 1982, J. Exp. Med. 155:1108) and malignant tumors (Chen, Z. J. et al., 1991 , J. Immunol. 147(3):1082; Dunn, P. L et al., 1987, J. Immunol. 60:181-187; Heriyn, D. et al., 1987, Proc. Natl. Acad. Sci. USA 84:8055; Chattopadhyay, P. et al., 1991 , Cancer Res. 3
- anti-idiotypic antibodies of angiogenic factors have been developed (WO/9608513, published March 21 , 1996), including those for modulation of tumor progression (Ortega, N. et al., C. R. Acad. Sci. Ill (FRANCE), May 1996, 319(5):411-415), there has been no disclosure prior to this invention of the use of anti-idiotypic antibodies mimicking angiogenic factor receptors, i.e., integrins, and VEGF receptors such as basic FGF receptor, kdr, flk-1 , or flt-1 , to provide active immunity against angiogenesis. Therefore, this invention provides the first example of such anti-idiotypes being used to prevent or inhibit angiogenesis.
- Blood vessels are formed by vasculogenesis, a process during which a primary capillary plexus is formed that is remodelled either by fusion or regression, and angiogenesis (also called neovascularization), a process in which vasculature is formed by new vessels sprouting from preexisting vessels and invading the developing organ.
- angiogenesis also called neovascularization
- Angiogenesis is an important process in the menstrual cycle in the endometrium, in pregnancy, and during neonatal growth.
- Angiogenesis is also important in wound healing and in the pathogenesis of a large variety of clinical diseases including tissue inflammation, arthritis, tumor growth, diabetic retinopathy, and macular degeneration by neovascularization of the retina.
- angiogenesis is generally absent in healthy adult or mature tissues, although it does occur in wound healing and in the corpus luteum growth cycle. See, for example, Moses et al., Science, 248:1408-1410 (1990). 4 Angiogenesis is required for tumor proliferation, since tumors need an adequate blood perfusion to obtain nutrients. Inhibiting angiogenesis by limiting vessel growth or selectively destroying proliferating endothelium would restrict tumor growth.
- Proposed methods of inhibiting angiogenesis include: (1 ) inhibition of release of "angiogenic molecules” such as basic-FGF (basic fibroblast growth factor), (2) neutralization of angiogenic molecules, such as by use of anti-basic-FGF antibodies, and (3) inhibition of endothelial cell response to angiogenic stimuli.
- angiogenic molecules such as basic-FGF (basic fibroblast growth factor)
- neutralization of angiogenic molecules such as by use of anti-basic-FGF antibodies
- endothelial cell response to angiogenic stimuli include collagenase inhibitor, angiostatic steroids, fungal-derived angiogenesis inhibitors, platelet factor 4, thrombospondin, arthritis drugs such as D-penicillamine and gold thiomalate, vitamin D 3 analogs, alpha-interferon, and others that might be used to inhibit angiogenesis.
- endothelial cell response inhibitors including collagenase inhibitor, angiostatic steroids, fungal-derived angiogenesis inhibitors, platelet
- Other new inhibitors of angiogenesis include angiostatin (O'Reilly et al., Cell 79:185-188
- TGFb transforming growth factor
- aFGF and bFGF acidic and basic fibroblast growth factor
- PDGF platelet derived growth factor
- VEGF vascular endothelial growth factor
- VEGF an endothelial cell-specific mitogen, acts as an angiogenesis inducer by specifically promoting the proliferation of endothelial cells.
- VEGF is a homodimeric glycoprotein consisting of two 23 kD subunits with structural similarity to PDGF.
- VEGF165 is the most abundant isoform.
- VEGF is expressed in embryonic tissues (Breier et al., Development (Camb.) 114:521 (1992)) macrophages, proliferating epidermal keratinocytes during wound healing (Brown et al., J. Exp. Med., 176:1375 (1992)), and may be responsible for tissue edema associated with inflammation (Ferrara et al., Endocr. Rev. 13:18 (1992)). In situ hybridization studies have demonstrated high VEGF expression in a number of human tumor lines including glioblastoma multiforme, hemangioblastoma, central nervous system neoplasms and AIDS-associated Kaposi's sarcoma (Plate, K.
- VEGF receptors typically are class III receptor-type tyrosine kinases characterized by having several, typically 5 or 7, immunoglobulin-like loops in their amino-terminal extracellular receptor ligand-binding domains (Kaipainen et al., J. Exp. Med. 178:2077-2088 (1993)).
- the other two regions include a transmembrane region and a carboxy-terminal intracellular catalytic domain interrupted by an insertion of hydrophilic interkinase sequences of variable lengths, called the kinase insert domain (Terman et al., Oncogene 6:1677-1683 (1991).
- VEGF receptors include flt-1, sequenced by Shibuya M. et al., Oncogene 5, 519-524 (1990); KDR, described in PCT/US92/01300, filed February 20, 1992, and in Terman et al., Oncogene 6:1677-1683 (1991 ); and flk-1, sequenced by Matthews W. et al. Proc. Natl. Acad. Sci. USA, 88:9026- 9030 (1991).
- KDR is the human form of flk-1.
- flk-1 High levels of flk-1 are expressed by endothelial cells that infiltrate gliomas (Plate, K. et al., (1992) Nature 359: 845-848). Flk-1 levels are specifically 6
- VEGF upregulated by VEGF produced by human glioblastomas (Plate, K. et al. (1993) Cancer Res. 53: 5822-5827).
- GEC glioblastoma associated endothelial cells
- mAbs neutralizing anti-VEGF monoclonal antibodies
- Integrins are a class of cellular receptors known to bind extracellular matrix proteins, and therefore mediate cell-cell and cell-extracellular matrix interactions, called cell adhesion events.
- the integrin receptors constitute a family of proteins with shared structural characteristics of non-covalent heterodimeric glycoprotein complexes formed of ⁇ and ⁇ subunits.
- angiogenesis related receptors are upregulated in tumor infiltrated vascular endothelial cells, the expression of these receptors is low in normal cells that are not associated with angiogenesis. Therefore, such normal cells would not be affected by inducing an immune response to such receptors to inhibit angiogenesis, and therefore to inhibit tumor growth.
- An object of this invention is to provide a method of inhibiting an unwanted angiogenic condition, such as tumor angiogenesis, rheumatoid arthritis, diabetic retinopathy and psoriasis, by inducing an immune response in the subject against an angiogenic molecule.
- Another object of this invention is to provide 7 immunogens that are capable of inducing an immune response in a subject against an angiogenic molecule.
- the present invention provides a method of inhibiting an unwanted angiogenic condition in a mammal comprising treating the mammal with an effective amount of an immunogen that causes an immune response against a molecule that induces angiogenesis in the mammal.
- the present invention also provides an immunogen that mimics a mammalian angiogenic molecule wherein the immunogen is not native to the mammal.
- the invention also provides a method of inhibiting an unwanted angiogenic condition in a mammal comprising treating the mammal with an effective amount of a vector containing DNA that expresses an immunogen that causes an immune response against a molecule that induces angiogenesis in the mammal.
- the present invention provides a method of inhibiting an unwanted angiogenic condition in a mammal.
- the method comprises treating the mammal with an effective amount of an immunogen that causes an immune response against a molecule that induces or regulates angiogenesis in the mammal.
- the unwanted angiogenic condition may be tumor growth, arthritis, macular degeneration, psoriasis, or any other pathological angiogenic condition.
- the animal is preferably a mammal, which may be a human or an animal typically used for experimentation, such as mice, rats or rabbits.
- the present invention also provides the immunogens used in these methods.
- the immunogens of 8 the invention unexpectedly induce an effective immune response when properly presented to the immune system.
- the immune response preferably inhibits, i.e. prevents, slows or stops, angiogenesis, and therefore inhibits or eliminates the pathological condition associated with angiogenesis, such as growth of tumors.
- the immunogens of the invention may be any angiogenic molecule associated with the process of angiogenesis, such as, but not limited to vascular endothelial growth factor (VEGF), angiopoietin-1 , angiopoietin-2, and basic fibroblast growth factor (bFGF). Further, the immunogen may be receptors associated with the process of angiogenesis, for example, flk-1 , flt-1 , and KDR; or integrins such as the vitronectin receptor ⁇ v ⁇ 3 ; or vascular endothelial cadherins (VE-Cadhe ⁇ n-1 and VE-Cadherin-2); TIE-1 , TIE-2/Tek.
- VEGF vascular endothelial growth factor
- angiopoietin-1 angiopoietin-2
- bFGF basic fibroblast growth factor
- the immunogen may be receptors associated with the process of angiogenesis, for example, flk-1
- the immunogen may be obtained from any animal or may be synthetically derived, providing it is substantially the same as that produced by the animal.
- the immunogen may also be introduced to any animal as naked DNA, or as a nucleic acid formulation, or as a plasmid containing DNA, which provide for the expression of a full length protein or a fragment thereof. (See U.S. Patent Nos. 5,589,466 and 5,630,796.)
- the immunogen may be a fragment of an antigen, epitope or antigenic determinant.
- the immunogen used in the invention may be a small molecule not native to the mammal or a nucleic acid molecule not native to the mammal. Such small molecules or nucleic acids may be synthesized or isolated from an organism other than the mammal.
- the immunogen of the invention may also be a peptide molecule, or peptidomimetic, capable of illiciting an immune response against a molecules involved in angiogenesis. Such peptide molecules and peptidomimetics may be synthesized or isolated from an organism other than the mammal. Methods for screening small molecules, nuclic acid molecules, peptide molecules and peptidomimetics are well-known in the art. (See, for example, J.
- the immunogen used in the method of the invention may be an antigen that is native to the mammal, and is modified to improve immunogenicity.
- the term "native” is defined herein as meaning autologous or homologous to an animal.
- the native antigens of the invention are "self proteins and therefore typically non-immunogenic in the animal from which they are derived.
- the antigen may be purified or substantially purified.
- the immunogens may also be not native, meaning foreign, to a mammal of the invention, such as small molecules or nucleic acid molecules that are not native to the mammal.
- the immunogens of the invention are modified in various ways known in the art, such as by conjugating or genetically fusing the immunogen to an immunogenic reagent. Conjugation or fusion of the immunogen to an immunogenic reagent can stimulate an immune response to the immunogen.
- the conjugates and fused molecules of this invention can be prepared by any of the known methods for coupling or fusing antigens to carriers or fusion molecules.
- the conjugates may also be prepared recombinantiy as fusion proteins by methods well-known in the art.
- the preferred method of conjugation is covalent coupling whereby the antigen is bound directly to the immunogenic reagent.
- Preferred immunogenic reagents include polysaccharides (U.S. Patent No. 5,623,057), and peptidoglycans (U.S. Patent No. 5,153,173).
- Another method of modifying the immunogens of the invention is for them to be bound or genetically fused with a cytokine, lymphokine, hormone or growth factor (U.S. Patent No. 5,334,379).
- cytokine, lymphokine, hormone or growth factor examples include, but are not limited to, interferons, GM-CSF, IL-1, IL-2, IL-3, IL-4, IL-5, IL-6 and IL-7 (U.S. Patent No. 5,334,379).
- interferons GM-CSF
- IL-1 interferons
- IL-2 interferons
- IL-3 interferons
- IL-4 interferons
- IL-5 IL-6
- IL-7 examples include, but are not limited to, interferons, GM-CSF, IL-1, IL-2, IL-3, IL-4, IL-5, IL-6 and IL-7.
- these U.S. Patents are herein incorporated by reference.
- a hapten is a substance having the ability to, when coupled with a protein, elicit an immune response.
- the invention can itself be haptenized , or can be bound to hapten-modified proteins. (U.S. Patent Nos. 4,778,752 and 5,290,551).
- An additional method of modifying the immunogens of the invention is glycosylation of the antigens or glycosylation of the carrier molecules of the antigens (see U.S. Patent Nos. 5,484,735 and 4,629,692).
- peptidomimetic compounds i.e., compounds which mimic the activity of peptides
- may be used in modification of the immunogens of the invention U.S. Patent Nos. 5,386,011 and 5,153,173
- peptidomimetics which are immunogenic and illicit an immune response against molecules involved in angiogenesis are themselves useful as immunogens in the invention.
- MHC Major Histocompatibility Complex
- angiogenic protein molecules of the invention are known, and may be obtained in natural or recombinant form by known methods. Newly identified, as well as molecules not yet identified may also be obtained and used as part of the invention. Methods of obtaining such molecules include isolating the angiogenic protein directly from cells; isolating or synthesizing DNA encoding the protein and using the DNA to produce recombinant protein; and synthesizing the protein chemically from individual amino acids.
- the entire angiogenic molecule gene or fragments of the gene may, for example, be isolated by using the known DNA sequence to construct 11 oligonucleotide probes. To do so, DNA restriction fragments are identified by
- DNA encoding the angiogenic molecule may be synthesized from individual nucleotides.
- Known methods for synthesizing DNA include preparing overlapping double-stranded oligonucleotides, filling in the gaps, and ligating the ends together.
- the DNA prepared as described above may be amplified by polymerase chain reaction (PCR).
- PCR polymerase chain reaction
- the DNA may be amplified by insertion into a cloning vector, which is transfected into a suitable host cell, from which the DNA may be recovered. See, generally, Sambrook et al, "Molecular Cloning,” Second Edition, Cold Spring Harbor Laboratory Press (1987).
- the angiogenic molecule-encoding DNA is inserted into an expression vector, which is transfected into a suitable host.
- the DNA is expressed, and the protein is harvested. See Sambrook et al., ]d.
- Equivalents of the angiogenic protein may also be used in the invention. Such equivalents include analogs that induce an immune response comparable to that of the protein. In addition, such equivalents are immunologically cross- reactive with their corresponding protein.
- the equivalent may, for example, be a fragment of the protein, or a substitution, addition or deletion mutant of the protein.
- the angiogenic protein fragment preferably contains sufficient amino acid residues to define an epitope of the antigen.
- the fragment may, for example, be a minigene encoding only the epitope.
- the fragment may be conjugated to a carrier molecule.
- suitable carrier molecules include keyhole limpet hemocyanin, lg sequences, TrpE, and human or bovine serum albumen. Conjugation may be carried out by methods known in the art. One such method is to combine a cysteine residue of the fragment with a cysteine residue on the carrier molecule.
- Equivalent proteins have equivalent amino acid sequences.
- Preferably, less than 25%, more preferably less than 10%, and most preferably less than 5% of the number of amino acid residues in a sequence are substituted for, added to, or deleted from the proteins of the invention.
- the present invention also provides anti-idiotypic antibodies or fragments thereof that mimic angiogenic molecules.
- An "antibody” in accordance with the present specification is defined broadly as a protein that specifically binds to an epitope.
- the antibodies may be polyclonal, or, preferably, monoclonal.
- the angiogenic molecule may be any molecule involved in the process of angiogenesis, such as, but not limited to, vitronectin, vascular endothelial growth factor (VEGF), and basic fibroblast growth factor (bFGF), flt-1 , flk-1 , KDR, angiopoietin 1 and 2, VE-Cadherin 1 and 2, TIE-1 and TIE-2/TEK. 1 3
- the modified immunogens and anti-idiotypic antibodies of the invention elicit an immune response in an animal against angiogenesis.
- the animal is preferably a mammal, such as a rabbit, rat, or mouse.
- the animal is a human.
- An immune response means production of antibodies, i.e. humoral, and/or a cell-mediated response, such as a T-cell response including helper and cytotoxic T cell responses.
- the anti-idiotypic antibody of the invention is directed against any antibody, which is itself directed against antigenic determinants of receptors to angiogenic molecules, or the angiogenic molecule itself.
- Such antibodies are known in the art, such as the anti-flk-1 antibody, DC101 , described in PCT/US95/01678, filed February 10, 1995; or anti- ⁇ v ⁇ 3 antibody, i.e. LM609 monoclonal antibody described in PCT Int'l. Application No. PCT/US95/03035, filed March 9, 1995.
- angiogenic molecules such as VEGF
- anti-receptor and anti-angiogenic molecule antibodies may be obtained by methods known in the art such as those described below.
- the polyclonal and monoclonal antibodies of the invention may be produced by methods known in the art. These methods include the immunological method described by Kohler and Milstein in Nature 256, 495-497 (1975) and Campbell in "Monoclonal Antibody Technology, The Production and Characterization of Rodent and Human Hybridomas" in Burdon et al., Eds., Laboratory Techniques in Biochemistry and Molecular Biology, Volume 13, Elsevier Science Publishers, Amsterdam (1985); as well as by the recombinant DNA method described by Huse et al in Science 246, 1275-1281 (1989).
- the antibody may be prepared in any mammal, including mice, rats, rabbits, goats and humans.
- the antibody may be a member of one of the following immunoglobulin classes: IgG, IgM, IgA, IgD, or IgE, and the subclasses thereof.
- DC101 mAb and anti- ⁇ v ⁇ 3 mAb which are both monoclonal antibodies to angiogenic receptors.
- An anti-idiotypic monoclonal antibody bearing the internal image of the determinants recognized by the DC101 monoclonal antibody and anti- ⁇ v ⁇ 3 monoclonal antibody is identified by determining which anti-idiotypic monoclonal antibody can induce anti- ⁇ v ⁇ mAb and anti-Flk-1 antibodies in the test animal.
- one embodiment of the invention provides a cell which produces the anti-idiotypic antibody of the invention.
- This cell may be any cell, including genetically engineered bacterial cells such as E. coli cells containing DNA to produce the antibody as well as the more typical mammalian cells such as B cells hybridized with murine myeloma cell lines using standard fusion procedures (Kearney, J. F. et al., 1981 , Eur. J. Immunol. 11 :877). Methods for producing hybridomas, which have the capacity to produce a monoclonal antibody, are well known in the art. (see Niman et al. Proc. Natl. Acad. Sci. USA 80:4949-4953 (1983) and Galfre et al., Meth. Enzymol., 73:3-46 (1981)).
- the invention also includes functional equivalents of the antibodies described in this specification.
- Functional equivalents have binding characteristics comparable to those of the antibodies, and include, for example, chimerized, humanized and single chain antibodies as well as fragments thereof.
- Diabodies may also be functional equivalents of the antibodies of this invention. Methods of producing such functional equivalents are disclosed in PCT Application No. WO 93/21319, European Patent Application No. EPO 239,400; PCT Application Wo 89/09622; European Patent Application No. 338,745; and European Patent Application EPO 332,424.
- Functional equivalents include polypeptides with amino acid sequences substantially the same as the amino acid sequence of the variable or hypervariable regions of the antibodies of the invention. "Substantially the 15
- amino acid sequence is defined herein as a sequence with at least 70% percent homology to an amino acid sequence of an antibody of the invention, as determined by the FASTA search method in accordance with Pearson and Lipman, Proc. Natl. Acad. Sci. USA 85, 2444-2448 (1988).
- Chimerized antibodies preferably have constant regions derived substantially or exclusively from human antibody constant regions and variable regions derived substantially or exclusively from the sequence of the variable region from a mammal other than a human.
- Humanized antibodies preferably have constant regions and variable regions other than the complementarity determining regions (CDRs) derived substantially or exclusively from the corresponding human antibody regions and CDRs derived substantially or exclusively from a mammal other than a human.
- CDRs complementarity determining regions
- Suitable mammals other than a human include any mammal from which monoclonal antibodies may be made, such as a rabbit, rat, mouse, horse, goat, or primate.
- Single chain antibodies or Fv fragments are polypeptides which consist of the V region of the heavy chain of the antibody linked to the V region of the light chain with or without an interconnecting linker. This comprises the entire antibody combining site, and is the minimal antibody binding site. These chains may be produced in bacteria.
- Functional equivalents further include fragments of antibodies that have the same or binding characteristics comparable to those of the whole antibody.
- Such fragments may contain one or both Fab fragments or the F(ab') 2 fragment.
- the antibody fragments Preferably contain all six complementarity determining regions of the whole antibody, although fragments containing fewer than all of such regions, such as three, four or five CDRs, may also be functional. 16
- a diabody is an antibody fragment which has two antigen binding sites and can be a bivalent or bispecific fragment.
- Bispecific diabodies are heterodimers of two 'crossover' scFv fragments in which the variable light and variable heavy domains of the two antibodies are present on different polypeptide chains.
- the functional equivalents may be or may combine members of any one of the following immunoglobulin classes: IgG, IgM, IgA, IgD, or IgE, and the subclasses thereof.
- Intracellularly expressed antibodies can be designed to bind and inactivate target molecules inside cells.
- the genes encoding can be expressed intracellularly.
- the specific and high-affinity binding properties of antibodies, combined with their ability to be stably expressed in precise intracellular locations inside mammalian cells, provides molecules for gene therapy applications. (Marasco, W., Gene Ther (4) 1 , p11 - 5, 1997).
- Genes encoding immunogens not native to the mammal may be introduced into mammalian ceils, particularly endothelial cells, by methods known in the art. Such methods have been described, for example, in Mulligan, et al., U.S. patent 5,674,722. The methods described in Mulligan, et al., U.S. patent 5,674,722 for preparing vectors useful for introducing genes into mammalian cells, particularly endothelial cells, are incorporated herein by reference.
- the immunogen may be presented to the immune system by a vehicle.
- the immunogen may be present on the surface of an antigen presenting cell, such as a dendritic cell, or combined with a pharmaceutically acceptable earner or adjuvant. 17
- Antigen presenting cells are generally eukaryotic cells with major histocompatibility complex (MHC), either Class I or Class II, gene products at their cell surface.
- MHC major histocompatibility complex
- antigen presenting cells also include recombinant eucaryotic cells, such as peripheral blood cells, and recombinant bacterial cells.
- Some examples of antigen presenting cells as defined by this specification include dendritic cells, macrophages that are preferably MHC Class II positive, monocytes that are preferably MHC Class II positive, and lymphocytes. (Also see U.S. Patent No. 5,597,563).
- the antigen presenting cell is a recombinant eucaryotic cell that expresses exogenous DNA encoding the antigen of the invention.
- the recombinant eucaryotic cell may be prepared in vivo or in vitro.
- Suitable cloning/expression vectors for inserting DNA into eucaryotic cells include well-known derivatives of SV-40, adenovirus, cytomegaiovirus (CMV), and retrovirus-derived DNA sequences. Any such vectors, when coupled with vectors derived from a combination of plasmids and phage DNA, i.e. shuttle vectors, allow for the cloning and/or expression of protein coding sequences in both procaryotic and eucaryotic cells.
- CMV cytomegaiovirus
- the immunogens of the invention may also be presented to the immune 18
- a suitable recombinant bacterial cell is an avirulent strain of Mvcobacterium bovis, such as bacille Calmette-Guerin (BCG), or an avirulent strain of Salmonella, such as S ⁇ tvphimurium.
- the recombinant bacterial cells may be prepared by cloning DNA comprising the active portion of the antigen in an avirulent strain, as is known in the art; see, for example, Curtiss et al., Vaccine 6, 155-160 (1988) and Galan et al., Gene 94, 29-35 (1990) for preparing recombinant Salmonella and Stover, OK. et al., Vaccines 91, Cold Spring Harbor Laboratory Press, pp. 393-398 (1991) for preparing recombinant BCG.
- Cloning vectors may comprise segments of chromosomal, non-chromosomal and synthetic DNA sequences.
- Some suitable prokaryotic cloning vectors include plasmids from E. coli, such as colE1 , pCR1 , pBR322, pMB9, pUC, pKSM, and RP4.
- Prokaryotic vectors also include derivatives of phage DNA such as M13, fd, and other filamentous single-stranded DNA phages.
- Vectors for expressing proteins in bacteria are also known.
- Such vectors include the pK233 (or any of the t ⁇ c family of plasmids), T7, and lambda PL.
- Examples of vectors that express fusion proteins are PATH vectors described by Dieckmann and Tzagoloff in J. Biol. Chem. 260. 1513-1520 (1985). These vectors contain DNA sequences that encode anthraniiate synthetase (TrpE) followed by a polylinker at the carboxy terminus.
- the expression vectors useful in the present invention contain at least one expression control sequence that is operatively linked to the DNA sequence or fragment to be expressed.
- the control sequence is inserted in the vector in order to control and to regulate the expression of the cloned DNA sequence.
- useful expression control sequences are the lac system, the trp system, the t ⁇ c system, the trc system, major operator and promoter regions of phage lambda, the control region of fd coat protein, and promoters derived from polyoma, adenovirus, retrovirus, and simian virus, e.g., the early and late 19 promoters of SV40, and other sequences known to control the expression of genes in prokaryotic or eukaryotic cells and their viruses or combinations thereof.
- the immunogens of the invention may also be combined with a suitable medium.
- suitable media include pharmaceutically acceptable carriers, such as phosphate buffered saiine solution, liposomes and emulsions.
- the immunogens may also be combined with pharmaceutically acceptable adjuvants that may enhance the immune response, such as muramyl peptides, lymphokines, such as interferon, interleukin-1 and interleukin-6, or bacterial adjuvants.
- adjuvant may comprise suitable particles onto which the immunogen is adsorbed, such as aluminum oxide particles.
- BCG Bacillus subtilis virus
- BCG Bacillus subtilis virus
- BCG When used as an antigen presenting ceil as described above, recombinant BCG may additionally act as its own adjuvant. In this case, additional adjuvant may not be needed although one or more additional adjuvants may optionally be present.
- BCG When used in its natural (non-recombinant) state, BCG acts solely as an adjuvant by being combined with the immunogen or anti-idiotypic antibody, resulting in a form that induces an effective immune response.
- the immunogen or immunogen composition may be administered to a mammal by methods known in the art. Such methods include, for example, intravenous, intraperitoneal, subcutaneous, intramuscular, topical, or intradermal administration.
- the level of anti-receptor antibody or to receptor in a sample may be determined by assays known in the art using the anti-idiotypic antibody of the invention. The results of these assays may be used for diagnostic purposes.
- the target antibody or antigen may be immobilized on a support either indirectly by using an anti-target antibody or directly to the support. Since the anti-idiotypic antibody mimics the receptor and will compete with and thereby inhibit the ability of the receptor to bind with anti-receptor antibodies, a competitive assay may be used to measure the concentration of receptor or anti-receptor antibodies by correlating the level of anti-idiotypic antibody binding to the concentration of receptor or anti-receptor antibodies.
- a variety of assays are available for detecting proteins with labeled antibodies.
- the target molecule if it is present, is immobilized and incubated with a labeled anti-idiotypic antibody.
- the labeled anti-idiotypic antibody binds to the immobilized target molecule. After washing to remove unbound molecules, the sample is assayed for the presence of the label.
- immobilized target molecule is incubated with an unlabeled anti-idiotypic antibody.
- the target molecule-unlabeled anti-idiotypic antibody complex if present, is then bound to a second, labeled antibody that is specific for the unlabeled antibody.
- the sample is washed and assayed for the presence of the label, as described above.
- the choice of marker used to label the antibodies will vary depending upon the application. However, the choice of marker is readily determinable to one skilled in the art.
- the labeled antibodies may be polyclonal or monoclonal. In a preferred embodiment, the antibody is monoclonal.
- the invention also provides a method of purifying ami-receptor antibodies in a sample comprising contacting the sample with an anti-idiotypic antibody of the invention, isolating the complex between anti-receptor antibodies from the sample and the anti-idiotypic antibody, and recovering the anti-receptor 21 antibodies from the complex.
- the anti-idiotypic antibody is preferably immobilized.
- DC Dendritic cells
- DC were washed twice in serum-free AIMV media and incubated overnight in AIMV with 100ug/ml of an affinity- purified fusion protein of Flk-1 and alkaline phosphatase (Flk-1 AP). The cells were then washed twice in AIMV before being used for vaccination.
- mice with DC pulsed with Flk-1 AP Lewis lung carcinoma metastasis model was used to assess the antitumor effect of vaccination with DC pulsed with Flk-1 AP. Briefly, C57BL6 mice were injected either intravenously or intraperiteneally, with each mouse receiving 1 x 10 5 Flk-1 AP- pulsed DC at Day 0. Seven days later, each mouse was inoculated intra- footpad with 1x 10 5 D122 ceils. Visible tumors were surgically removed at Day 10. During this period, mice received two boost vaccinations every ten days. At Day 60, mice were sacrificed and lungs removed for weighing and assessment of metastases. As a control, a group of mice were vaccinated with DC alone.
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Abstract
Cette invention se rapporte à des antigènes du soi angiogéniques modifiés et à des anticorps anti-idiotypiques, qui imitent un déterminant antigénique d'un récepteur contre une molécule angiogénique. Des procédés in vitro et in vivo d'utilisation de ces antigènes et de ces anticorps sont également présentés.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US3672498A | 1998-03-06 | 1998-03-06 | |
US36724 | 1998-03-06 | ||
PCT/US1999/005164 WO1999045018A1 (fr) | 1998-03-06 | 1999-03-08 | Immunisation active contre les antigenes associes a l'angiogenese |
Publications (2)
Publication Number | Publication Date |
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EP1032583A1 true EP1032583A1 (fr) | 2000-09-06 |
EP1032583A4 EP1032583A4 (fr) | 2005-02-02 |
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EP99911258A Withdrawn EP1032583A4 (fr) | 1998-03-06 | 1999-03-08 | Immunisation active contre les antigenes associes a l'angiogenese |
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EP (1) | EP1032583A4 (fr) |
AU (1) | AU2994599A (fr) |
CA (1) | CA2310252A1 (fr) |
WO (1) | WO1999045018A1 (fr) |
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AU776473C (en) * | 1999-03-11 | 2005-04-14 | Entremed, Inc | Compositions and methods for treating cancer and hyperproliferative disorders |
FR2796073B1 (fr) * | 1999-07-07 | 2003-08-29 | Centre Nat Rech Scient | Anticorps anti-idiotypiques des facteurs de croissance des fibroblastes et leur utilisation comme medicaments |
US7087592B1 (en) | 1999-08-23 | 2006-08-08 | Entre Med, Inc. | Compositions comprising purified 2-methoxyestradiol and methods of producing same |
US7094410B2 (en) * | 2002-03-02 | 2006-08-22 | The Scripps Research Institute | DNA vaccine against proliferating endothelial cells and methods of use thereof |
CU23178A1 (es) * | 2002-04-15 | 2006-09-22 | Ct Ingenieria Genetica Biotech | INMUNOTERAPIA ACTIVA ANTIANGIOGéNICA |
KR20050047518A (ko) * | 2002-07-05 | 2005-05-20 | 듀크 유니버시티 | 혈관 면역요법 |
EP2001482B1 (fr) | 2006-03-20 | 2016-08-24 | CASI Pharmaceuticals, Inc. | 2-méthoxyestradiol présentant une activité anti-arthritique pouvant modifier l'évolution de la maladie |
WO2008006187A2 (fr) * | 2006-07-12 | 2008-01-17 | Legeev, Yury V. | Complexes de protéines pour la prévention et le traitement de maladies associées à des troubles de l'angiogenèse |
CU24637B1 (es) | 2019-12-24 | 2022-12-12 | Ct Ingenieria Genetica Biotecnologia | Polipéptidos que comprenden mutantes del vegf-a humano con re-arreglos de puentes disulfuro y composiciones que los contienen |
Citations (4)
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EP0438803A2 (fr) * | 1990-01-26 | 1991-07-31 | Immunomedics, Inc. | Vaccins contre le cancer et les maladies infectieuses |
WO1994005329A1 (fr) * | 1992-08-31 | 1994-03-17 | Jenner Technologies | Stimulation d'une reponse antitumorale des lymphocytes t a l'aide d'anticorps anti-idiotypiques |
WO1997023237A1 (fr) * | 1995-12-22 | 1997-07-03 | Immunomedics, Inc. | Utilisation d'immunoconjugues pour accroitre l'efficacite des vaccins multietapes stimulant les reactions immunitaires en cascade |
WO1997023510A1 (fr) * | 1995-12-21 | 1997-07-03 | Centre National De La Recherche Scientifique | Anticorps anti-idiotypiques du facteur de croissance endotheliale vasculaire et leur utilisation comme medicaments |
Family Cites Families (6)
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DE2860875D1 (en) * | 1977-09-28 | 1981-10-15 | Nat Res Dev | Immunological preparations incorporating mhc antigens and their production |
US4778752A (en) * | 1983-10-11 | 1988-10-18 | Scripps Clinic And Research Foundation | Receptors specific for hapten-modified self proteins |
US5703055A (en) * | 1989-03-21 | 1997-12-30 | Wisconsin Alumni Research Foundation | Generation of antibodies through lipid mediated DNA delivery |
WO1991001146A1 (fr) * | 1989-07-14 | 1991-02-07 | Praxis Biologics, Inc. | Cytokine et supports d'hormone pour vaccins conjugues |
US5965132A (en) * | 1992-03-05 | 1999-10-12 | Board Of Regents, The University Of Texas System | Methods and compositions for targeting the vasculature of solid tumors |
US5580563A (en) * | 1992-05-01 | 1996-12-03 | Tam; James P. | Multiple antigen peptide system having adjuvant properties, vaccines prepared therefrom and methods of use thereof |
-
1999
- 1999-03-08 EP EP99911258A patent/EP1032583A4/fr not_active Withdrawn
- 1999-03-08 WO PCT/US1999/005164 patent/WO1999045018A1/fr active Application Filing
- 1999-03-08 CA CA002310252A patent/CA2310252A1/fr not_active Abandoned
- 1999-03-08 AU AU29945/99A patent/AU2994599A/en not_active Abandoned
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EP0438803A2 (fr) * | 1990-01-26 | 1991-07-31 | Immunomedics, Inc. | Vaccins contre le cancer et les maladies infectieuses |
WO1994005329A1 (fr) * | 1992-08-31 | 1994-03-17 | Jenner Technologies | Stimulation d'une reponse antitumorale des lymphocytes t a l'aide d'anticorps anti-idiotypiques |
WO1997023510A1 (fr) * | 1995-12-21 | 1997-07-03 | Centre National De La Recherche Scientifique | Anticorps anti-idiotypiques du facteur de croissance endotheliale vasculaire et leur utilisation comme medicaments |
WO1997023237A1 (fr) * | 1995-12-22 | 1997-07-03 | Immunomedics, Inc. | Utilisation d'immunoconjugues pour accroitre l'efficacite des vaccins multietapes stimulant les reactions immunitaires en cascade |
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PLOUET J ET AL: "VEGF DEPENDENT TUMORAL PROGRESSION: SITMULATION BY ANTI VEGF IDIOTYPIC ANTIBODIES" JOURNAL OF CELLULAR BIOCHEMISTRY. SUPPLEMENT, A.R. LISS, NEW YORK, NY, US, no. SUPPL 18A, January 1994 (1994-01), page 328, XP000602723 ISSN: 0733-1959 * |
See also references of WO9945018A1 * |
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AU2994599A (en) | 1999-09-20 |
CA2310252A1 (fr) | 1999-09-10 |
EP1032583A4 (fr) | 2005-02-02 |
WO1999045018A1 (fr) | 1999-09-10 |
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