Development of DNA probes and immunological reagents of human tumor associated antigens

摘要

This invention provides a method for preparing a hybridoma cell line which produces a monoclonal antibody which specifically recognizes and binds to a tumor associated antigen which comprises: (a) cotransfecting a CREF-Trans 6 cell line with DNA isolated from a neoplastic, human cell and a plasmid which encodes a selectable or identifiable trait; (b) selecting transfected cells which express the selectable or identifiable trait; (c) recovering the cells so selected in step (b); (d) injecting the cells so recovered in step (c) into a suitable marine host; (e) maintaining the resulting first murine host for a period of time effective to induce the cells injected in step (d) to form a tumor in the murine host; (f) isolating the tumor formed in step (e); (g) obtaining tumor cells from the isolated tumor in step (f); (h) coating the tumor cells obtained in step (9) with an antiserum generated against the CREF Trans-6 cell line (i) injecting the antiserum-coated cells from step (h) into a plurality of suitable second murine hosts; (j) screening the resulting second hosts from step (i) to identify hosts which produce serum reactive with the neoplastic human cell; (k) removing spleens from the second hosts so identified in step (j); (l) preparing from the spleens so removed in step (k) hybridomas; and (m) recovering therefrom a hybridoma cell line which produces a monoclonal antibody which specifically recognizes and binds to the tumor associated antigen.