Abstract: Compositions and methods for diagnosis of neoplastic tissue are described. Monoclonal antibodies which specifically recognize the tumor cell specific NADH:protein thiol reductase and the hybridoma cell lines which produce them are provided. Also provided are diagnostic and immunohistological assays for the identification of cells that are neoplastic.

Abstract: The present disclosure provides the nucleotide sequence encoding a cell surface NADH oxidase/protein disulfide-thiol interchange protein (tNOX) characteristic of neoplastic and virus-infected cells. Also provided are recombinant DNA molecules comprising a sequence portion encoding full length or truncated tNOX, recombinant host cell which express full length or truncated tNOX, methods for recombinant production of tNOX or truncated tNOX, and diagnostic methods which employ either nucleotide sequences of the neoplastic cell-specific tNOX or antibodies specific for the rNOX protein.

Abstract: Compositions and methods for diagnosis of neoplastic tissue are described. Monoclonal antibodies which specifically recognize the tumor cell specific NADH:protein thiol reductase and the hybridoma cell lines which produce them are provided. Also provided are diagnostic and immunohistological assays for the identification of cells that are neoplastic. Because the antibodies specifically prevent the growth of cancer cells, induce apoptotic cell death of cancer cells, and are without effect on normal cells, the described monoclonal antibodies are useful for inhibiting cancer cell growth and for treating a neoplastic condition.