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  • Title: Ovarian cancer antigen CA125 is encoded by the MUC16 mucin gene.
    Author: Yin BW, Dnistrian A, Lloyd KO.
    Journal: Int J Cancer; 2002 Apr 10; 98(5):737-40. PubMed ID: 11920644.
    Abstract:
    Serum assays based on the CA125 antigen are widely used in the monitoring of patients with ovarian cancer; however very little is known about the molecular nature of the CA125 antigen. We recently cloned a partial cDNA (designated MUC16) that codes for a new mucin that is a strong candidate for being the CA125 antigen. This assignment has now been confirmed by transfecting a partial MUC16 cDNA into 2 CA125-negative cell lines and demonstrating the synthesis of CA125 by 3 different assays. Of the 3 antibodies (OC125, M11 and VK-8) tested on the transfected cells, only the first 2 were strongly positive, indicating the differential expression of the CA125 epitopes in these cells. The cloning and expression of CA125 antigen opens the way to an understanding of its function in normal and malignant cells.
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