Columbia University

University of Medicine and Dentistry of New Jersey

Robert E Canfield

Steven Birken

John F O'Connor

William R Moyle

Paul H Ehrlich

Galina I Kovalevskaya

Ilya Trakht

Sergei Rudchenko

Gary Kalantarov

Alexander Krichevsky

Gordon J MacDonald

Donna M Anderson

E Glenn Armstrong

Elmo G Armstrong

The present invention provides monoclonal antibody-producing hybridomas designated 27.F7 and 27.B1. The invention provides a method of detecting TIP-2 antigen bearing cancer cells in a sample. The invention provides a method of detecting TIP-2 antigen on the surface of cancer cells. The invention provides a method for diagnosing cancer in a subject. The invention provides a method for delivering exogenous material to TIP-2 antigen-bearing cancer cells of a human subject. The invention provides a method for treating cancer in a human subject. The invention provides isolated peptides having the amino acid sequences Lys Leu Leu Gly Gly Gln Ile Gly Leu (SEQ. ID No.) and Ser Leu Leu Gly Cys Arg His Tyr Glu Val (SEQ. ID No.). The invention provides a method for immunohistochemical screening of a tissue section for the presence of TIP-2 antigen bearing cancer cells. The invention provides a kit for detecting the presence of TIP-2 antigen-bearing cancer cells. The invention provides a method for detecting the presence of TIP-2 antigen. The invention provides a method for immunohistochemical screening of tissue sections. The invention provides a method for monitoring progression of cancer wherein the cancer cells are TIP-2 antigen-bearing cells. The invention provides a method for diagnosing cancer associated with the expression of TIP-2.

Tumor-associated marker

This invention provides monoclonal antibody-producing hybridomas designated 27.F7 and 27.B1. The invention also provides methods for detecting TIP-2 antigen-bearing cancer cells in a sample, detecting the presence of TIP-2 antigen, optionally on the surface of cancer cells, immunohistochemical screening of a tissue section for the presence of TIP-2 antigen bearing cancer cells, diagnosing cancer in a subject, monitoring progression of cancer wherein the cancer cells are TIP-2 antigen-bearing cells, delivering exogenous material to TIP-2 antigen-bearing cancer cells of a human subject, and treating cancer in a human subject. This invention further provides a kit for detecting the presence of TIP-2 antigen-bearing cancer cells. This invention also provides isolated peptides having the amino acid sequences Lys Leu Leu Gly Gly Gln Ile Gly Leu (SEQ ID No:3) and Ser Leu Leu Gly Cys Arg His Tyr Glu Val (SEQ ID NO:4).

This invention provides an antibody which specifically binds to hLH&#x3b2;cf without cross-reacting with hLH, hLH&#x3b2; or hCG&#x3b2;cf. In an embodiment, the monoclonal antibody is designated B505. In a further embodiment, the hybridoma cell line producing the monoclonal antibody B 505 is designated ATCC Accession No. 12000. This invention provides different uses of the antibodies. Finally, this invention provides a method for determining the amount of hLH&#x3b2;cf or hLH&#x3b2;cf-related molecule in a sample.

Antibodies specific for HLH &#x3b2;core fragment and uses thereof

This invention provides methods for detecting the presence of human malignant cells in a sample of tumor cells; determining whether a tumor present in a human subject is malignant; obtaining an enriched population of live human malignant cells; determining the amount of intact luteinizing hormone in a sample; determining the ovulatory stage of a subject; determining the amount of intact follicle stimulating hormone in a sample; determining the ovulatory stage of a subject; determining the amount of intact human chorionic gonadotropin in a sample; determining whether a subject is pregnant; determining the ovulatory stage of a subject; determining the amount of free &agr; subunit of human luteinizing hormone in a sample; determining whether a subject has a malignant tumor; determining the amount of nicked human chorionic gonadotropin in a sample; and determining the likelihood of a fetus's being afflicted with Down's syndrome.

Methods of using antibodies against hormone-related determinants

This invention provides an antibody which specifically binds to hLH.beta.cf without cross-reacting with hLH, hLH.beta. or hCG.beta.cf. In an embodiment, the monoclonal antibody is designated B505. In a further embodiment, the hybridoma cell line producing the monoclonal antibody B 505 is designated ATCC Accession No.12000. This invention provides different uses of the antibodies. Finally, this invention provides a method for determining the amount of hLH.beta.cf or hLH.beta.cf-related molecule in a sample.

Antibodies specific for hLH .beta. core fragment

This invention provides a quantitative assay for determining the amount of a biologically active ligand selected from the group consisting of human chorionic gonadotropin and luetinizing hormone present in a sample comprising contacting the sample with both the receptor to which the ligand naturally binds in order to effect its biologicaly activity and a monoclonal antibody directed to the ligand or to a complex of the ligand and the receptor so as to form a complex of the ligand bound to both the receptor, at the site to which the ligand naturally binds to the receptor, and the monoclonal antibody. In the complex so formed, either the receptor or the monoclonal antibody is labeled with a detectable marker and a determination is made of the amount of labeled receptor or of labeled monoclonal antibody bound to the ligand or the amount of labeled receptor or of labeled monoclonal antibody not bound to the ligand, or both such amounts. This invention further provides a quantitative assay for determining the amount present in a sample of a receptor to which a biologically acitve ligand selected from the group consisting of human chorionic gonadotropin and luetinizing hormone naturally binds in order to effect its biological activity. Finally, this invention provides kits for quantitatively assaying for the amount present in a sample of a biologically active ligand or for a receptor to which the ligand naturally binds in order to effect its biological activity.

Sensitive bioassay using monoclonal antibodies which bind to

An immunoassay for detecting and measuring hCG in a sample includes an antibody directed to the carboxy terminal portion of the .beta. subunit of hCG and a monoclonal antibody directed to a determinant on hCG at a locus sufficiently remote from the carboxy terminal portion of the .beta. subunit of hCG that both antibodies can simultaneously bind to hCG, wherein at least one of the antibodies is delectable when both are bound to hCG. In a presently preferred embodiment, an immunoassay for hCG or hCB.beta. in urine includes a purified, labeled or detectable serum-derived antibody directed to the carboxy-terminal portion of the .beta. subunit of hCG and a matrix-bound monoclonal antibody directed to a locus on the .beta. subunit sufficiently remote from the carboxy-terminal portion that both antibodies can simultaneously bind to hCG or hCG.beta..

Immunoassay for human chorionic gonadotropin

Mixtures of monoclonal antibodies which contain effective assaying amounts of each of at least two monoclonal antibodies that bind to different antigenic sites on the antigen and are capable under appropriate conditions of binding simultaneously to an antigen are useful in enhanced sensitivity assays for the antigen. By utilizing such mixtures in diagnostic assays for important antigens such as the polypeptide human chorionic gonadotropin enhanced sensitivity can be achieved as compared with assays employing individual monoclonal antibodies.

Growing community of inventors

New York, NY, United States of America

Robert E Canfield