초록 ▼

The present invention relates to monoclonal antibody H11 and antigen binding fragments that specifically bind to the antigen recognized by H11, the C-antigen. The C-antigen is found specifically on neoplastic cells and not on normal cells. Also disclosed are polynucleotide and polypeptide derivative

The present invention relates to monoclonal antibody H11 and antigen binding fragments that specifically bind to the antigen recognized by H11, the C-antigen. The C-antigen is found specifically on neoplastic cells and not on normal cells. Also disclosed are polynucleotide and polypeptide derivatives based on H11, including single chain V region molecules and fusion proteins, and various pharmaceutical compositions. When administered to an individual, the H11 antibody is effective in diagnosing, localizing, and/or treating neoplasias. The invention further provides methods for treating a neoplastic disease, particularly melanoma, neuroblastoma, glioma, soft tissue sarcoma, and small cell lung carcinoma. Patients who are in remission as a result of traditional modes of cancer therapy may be treated with a composition of this invention in hopes of reducing the risk of recurrence. Patients may also be treated concurrently with the antibodies and traditional anti-neoplastic agents.

대표청구항 ▼

We claim: 1. An isolated polynucleotide comprising a sequence that encodes an antigen binding polypeptide wherein the polypeptide comprises an H chain V region and an L chain V region of the polypeptide encoded by the nucleic acid sequence as shown in SEQ ID NO:13, and wherein the antigen binding p

We claim: 1. An isolated polynucleotide comprising a sequence that encodes an antigen binding polypeptide wherein the polypeptide comprises an H chain V region and an L chain V region of the polypeptide encoded by the nucleic acid sequence as shown in SEQ ID NO:13, and wherein the antigen binding polypeptide specifically recognizes a cancer cell surface antigen and does not recognize a normal non-cancerous cell surface antigen. 2. The polynucleotide of claim 1, wherein said antigen binding polypeptide specifically recognizes any one or more of at least glioma, melanoma, breast carcinoma, lung carcinoma, ovarian carcinoma, lymphoma, gastric carcinoma, colon carcinoma or prostate carcinoma cells. 3. The polynucleotide of claim 1, wherein the polynucleotide encodes both of the amino acid sequences of the H chain V region and the L chain V region of the polypeptide as shown in SEQ ID NO:14. 4. The polynucleotide of claim 1 or 2, wherein the antigen binding polypeptide comprises a CDR region of the polypeptide as shown in SEQ ID NO:14. 5. The polynucleotide of claim 1 or 2, wherein the antigen binding polypeptide comprises at least one of the H chain CDR1, CDR2, or CDR3 of the polypeptide as shown in SEQ ID NO:14. 6. The polynucleotide of claim 5, wherein the antigen binding polypeptide comprises the H chain CDR2 of the polypeptide as shown in SEQ ID NO:14. 7. The polynucleotide of claim 5, wherein the antigen binding polypeptide comprises the H chain CDR3 of the polypeptide as shown in SEQ ID NO:14. 8. The polynucleotide of claim 5, wherein the antigen binding polypeptide comprises the H chain CDR2 and CDR3 of the polypeptide as shown in SEQ ID NO:14. 9. The polynucleotide of claim 1 or 2, wherein the antigen binding polypeptide comprises the L chain CDR3 of the polypeptide as shown in SEQ ID NO:14. 10. The polynucleotide of claim 1 or 2, comprising the polynucleotide of SEQ ID NO:13. 11. The polynucleotide of claim 1 or 2, wherein the antigen binding polypeptide comprises a variable region of the polypeptide as shown in SEQ ID NO:14. 12. The polynucleotide of claim 1 or 2, wherein the polynucleotide further encodes at least one functional moiety. 13. The polynucleotide of claim 12, wherein the at least one functional moiety is selected from the group consisting of a signal peptide, an agent that enhances immunologic reactivity, an agent that facilitate coupling to a solid support, a carrier, a bioresponse modifier, a toxin, a detectable label, and a drug. 14. The polynucleotide of claim 13, wherein the signal peptide is prokaryotic. 15. The polynucleotide of claim 13, wherein the agent that enhances immunologic reactivity is a bacterial superantigen. 16. The polynucleotide of claim 13, wherein the bioresponse modifier is a cytokine. 17. The polynucleotide of claim 13, wherein the functional moiety is a toxin selected from the group consisting of ricin, pokeweed antiviral protein, Pseudomonas exotoxin A, diphtheria toxin, ricin A chain, restrictocin, and phospholipase enzymes. 18. The polynucleotide of claim 1 or 2, wherein the antigen binding polypeptide is selected from the group consisting of whole native antibodies, bispecific antibodies, chimeric antibodies, Fab, F(ab')2, single chain V region fragments (scFv) and fusion polypeptides. 19. The polynucleotide of claim 1 or 2, wherein said antigen binding polypeptide is an antigen binding polypeptide of a human antibody. 20. An isolated cloning vector comprising a polynucleotide of claim 1 or 2. 21. An expression vector comprising a polynucleotide of claim 1 or 2. 22. An isolated host cell comprising a polynucleotide of claim 1 or 2. 23. A composition comprising a polynucleotide of claim 1 or 2. 24. A method for making a polynucleotide of claim 1 or 2 comprising preparing the polynucleotide using one or method selected from: chemical synthesis, nucleic acid amplification, and recombinant cloning methods. 25. A method for making an antigen binding polypeptide by expressing a polynucleotide of claim 1 in a host cell. 26. An isolated polynucleotide encoding a diabody comprising an antigen binding polypeptide according to claim 1 or 2. 27. An isolated polynucleotide encoding a dimer comprising an antigen binding polypeptide according to claim 1 or 2. 28. The polynucleotide according to claim 1 or 2 wherein the antigen binding polypeptide does not specifically recognize any one of normal non-cancerous adrenal, bladder, cervix, esophagus, eye, heart, kidney, liver, muscle, pancreas, parotid, pituitary, small intestine, spinal cord, spleen, thymus, thyroid, testis, or uterus cells. 29. The polynucleotide of claim 1 or 2, wherein the antigen binding polypeptide is a humanized antigen binding polypeptide. 30. The polynucleotide of claim 1 or 2, wherein the antigen binding polypeptide comprises a heterologous immunoglobulin constant region. 31. The polynucleotide of claim 1 or 2, wherein the polynucleotide encodes a ScFv or antibody to a cancer cell surface epitope, wherein the ScFv or antibody is comprised of the amino acid sequences of the H chain V region and the L chain V region of the polypeptide as shown in SEQ ID NO:14, and wherein the antigen binding polypeptide specifically recognizes a cancer cell surface antigen and does not recognize a normal non-cancerous cell surface antigen. 32. The polynucleotide of claim 1 or 2, wherein the antigen binding polypeptide is a polypeptide derivative or a functionally equivalent fragment of the ScFv or antibody. 33. The polynucleotide of claim 1 or 2, wherein said antigen binding polypeptide comprises a H and L chain CDR1, CDR2, or CDR3 which consists of the amino acid sequence of the corresponding CDR of a scFv or antibody or with exception of one or more deletions, additions or substitutions relative to the amino acid sequence, while having substantially the same specificity of the scFv or antibody. 34. The polynucleotide of claim 1 or 2, wherein the antigen binding polypeptide comprises at least a portion of a variable region of a scFv or antibody as shown in SEQ ID NO:14 such that said antigen binding polypeptide retains the specificity of the scFv or antibody. 35. The polynucleotide of claim 1 or 2, wherein the antigen binding polypeptide comprises an amino acid sequence for at least one CDR which plays a role in the specificity of the antibody as shown in SEQ ID NO:14. 36. An isolated polynucleotide comprising a sequence that encodes an antigen binding polypeptide, wherein said polypeptide comprises an H chain CDR3 that is encoded by the nucleic acid sequence as shown in SEQ ID NO:13, and wherein the antigen binding polypeptide specifically recognizes a cancer cell surface antigen and does not recognize a normal non-cancerous cell surface antigen. 37. An isolated polynucleotide comprising a sequence that encodes an antigen binding polypeptide, wherein said polypeptide comprises an L chain CDR3 that is encoded by the nucleic acid sequence as shown in SEQ ID NO:13, and wherein the antigen binding polypeptide specifically recognizes a cancer cell surface antigen and does not recognize a normal non-cancerous cell surface antigen. 38. The isolated polynucleotide of claim 36 or 37, wherein said antigen binding polypeptide specifically recognizes any one or more of at least glioma, melanoma, breast carcinoma, lung carcinoma, ovarian carcinoma, lymphoma, gastric carcinoma, colon carcinoma or prostate carcinoma cells. 39. The isolated polynucleotide of claim 36 or 37, wherein said antigen binding polypeptide is selected from the group consisting of whole native antibodies, bispecific antibodies, chimeric antibodies, Fab, F(ab')2, single chain V region fragments (scFv) and fusion polypeptides. 40. The isolated polynucleotide of claim 36 or 37, wherein the polynucleotide further encodes at least one functional moiety. 41. The isolated polynucleotide of claim 40, wherein the at least one functional moiety is selected from the group consisting of a signal peptide, an agent that enhances immunologic reactivity, an agent that facilitates coupling to a solid support, a carrier, a bioresponse modifier, a toxin, a detectable label, and a drug. 42. The isolated polynucleotide of claim 41, wherein the signal peptide is prokaryotic. 43. The isolated polynucleotide of claim 41, wherein the agent that enhances immunologic reactivity is a bacterial superantigen. 44. The isolated polynucleotide of claim 41, wherein the bioresponse modifier is a cytokine. 45. The polynucleotide of claim 40, wherein the functional moiety is a toxin selected from the group consisting of ricin, pokeweed antiviral protein, Pseudomonas exotoxin A, diphtheria toxin, ricin A chain, restrictocin, and phospholipase enzymes. 46. An isolated vector comprising a polynucleotide of claim 1, 10, 36 or 37. 47. An isolated host cell comprising a polynucleotide of claim 10, 36 or 37. 48. A composition comprising a polynucleotide of claim 10, 36 or 37. 49. An isolated polynucleotide comprising a sequence that encodes a polypeptide comprising an H chain V region or an L chain V region of the polypeptide encoded by the nucleic acid sequence as shown in SEQ ID NO:13.