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  • Title: [Biomarker in gynecologic malignancies].
    Author: Isonishi S.
    Journal: Gan To Kagaku Ryoho; 2004 Jul; 31(7):1003-7. PubMed ID: 15272576.
    Abstract:
    We selected ovarian cancer as being the most representative of the gynecologic malignancies since it has the largest number of tumor markers now in clinical use. First, variety of serum tumor markers were developed and regularly used to detect the existence of ovarian cancer and its stage. These markers of monoclonal antibodies could detect three different classes of cell surface antigen. CA 125, CA 130, CA 602 are antibodies raised against the core protein of the proteoglycan molecule, whereas CA 19-9, CA 50, KMO-1 and CA 72-4, STN, CA 546 are antibodies against a different portion of the glycosaminoglycan chain from the core protein. These markers, when combined with another group of tumor markers for discriminating the variety of pathological types of ovarian cancer, might have the potential to provide a better predictive value. Second, biomarkers for the detection of early-stage ovarian cancer are urgently needed and developed also in gynecologic tumors. These include a ovarian cancer-specific proteomic patterns generated by mass spectroscopy and single nucleotide polymorphism (SNP) digital analysis combined with assessment of allelic imbalance. Third, for monitoring the effect of treatment with cytostatic drugs, various types of biomarkers could be used as surrogate markers for the treatment depending on the mechanism of the effects of the drug used. For treatment with Bryostatin, a strong protein kinase C (PKC) stimulator, PKC activity promises to be an effective marker. For the trials with bevacizumab, anti-VEGF antibody, VEGF and its associated bFGF, CD-31, and thrombospondin-1 (TSP-1), are leading candidates for monitoring markers.
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