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Modulation of cisplatin sensitivity and resistance by buthionine sulfoximine and cyclosporin A in human esophageal cancer cells

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We established a 2.4-fold cisplatin (CDDP)-resistant human esophageal cancer cell line (TE2R) from the parent TE2 line. CDDP accumulation was reduced in TE2R. The Na+, K+-ATPase inhibitor ouabain inhibited CDDP accumulation in TE2 but not TE2R, suggesting that TE2R may have alterations in the Na+, K+-ATPase and defective CDDP uptake mechanism. Buthionine sulfoximine (BSO) enhanced CDDP sensitivity of both cell lines and cyclosporin A (CsA) modified CDDP resistance in TE2R. These effects were associated with increased CDDP accumulation. Thus, BSO and CsA may be useful for modulation of CDDP sensitivity or resistance in esophageal cancer.
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Document Type: Research Article


Publication date: November 1, 1996

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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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