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Molecular mechanism of chemoresistance to cisplatin in ovarian cancer cell lines

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It is important to clarify the mechanism of resistance to cisplatin for the treatment of solid tumors. We have examined the expression of apoptosis-related proteins, Bax and Bcl-2, in ovarian cancer cells. We used the cell line 2008 and its cisplatin resistant subclone 2008 C-13. The percentage of 2008 cells showing apoptosis was significantly higher following cisplatin treatment as compared to untreated controls. 2008 C-13 cells showing apoptosis did not differ between the cisplatin-treated group and the untreated group. The expression of mRNA and protein of Bax in the two cell lines were not altered by treatment with cisplatin. Although the expression of mRNA and protein of Bcl-2 decreased in 2008 cells after treatment with cisplatin, the expression of Bcl-2 remained unchanged in 2008 C-13 cells. Our results indicate that the down-regulation of Bcl-2 plays an important role in the mechanisms of tumor resistance to anticancer drugs.
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Document Type: Research Article

Affiliations: Departments of Gastroenterological Surgery, Transplant, and Surgical Oncology, Okayama University, Okayama 700-8558, Japan

Publication date: June 1, 2004

More about this publication?
  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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