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Microsatellite instability correlates with normal expression of cyclin E in hepatocellular carcinomas

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It has been reported that microsatellite instability (MSI) strongly correlates with carcinogenesis and cancer progression. In the present study, we studied the incidence of MSI at 5 polymorphic microsatellite markers (D5S406, D13S153, D16S402, D17S796, and poly(A) tract BAT26), the expression of G1 cyclins (cyclin A, cyclin D and cyclin E), and Ki-67 labeling index in 30 surgically resected hepatocellular carcinomas (HCCs) and their adjacent non-cancerous tissues. The results of analysis showed that 43% of HCCs exhibited MSI in one locus, 10% in two loci, and 3% in three loci. Overexpressions of cyclin E and cyclin A were observed in 57% and 83% of HCCs, respectively. MSI in HCCs, however, correlated with normal expressions of cyclin E and cyclin A and with a low labeling index of Ki-67. Thus, patients with HCCs exhibiting MSI at these 5 markers may have less involvement of G1/S disregulation and may have better prognosis than other patients with HCC.
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Document Type: Research Article

Affiliations: Department of Cell Biology, Institute of Cellular and Molecular Biology, Okayama University Medical School, Okayama 700-8558, Japan

Publication date: June 1, 2001

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  • The International Journal of Oncology provides an international forum for the publication of the latest, cutting-edge research in the broad area of oncology and cancer treatment. The journal accepts original high quality works and reviews on all aspects of oncology research including carcinogenesis, metastasis, epidemiology, chemotherapy and viral oncology. Through fair and efficient peer review, the journal is dedicated to publishing top tier research in the field, offering authors rapid publication as well as high standards of copy-editing and production. The International Journal of Oncology is published on a monthly basis in both print and early online.
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