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EXPRESSION OF bcrp gene IN THE NORMAL LUNG TISSUE AND LUNG CANCER

Chinese Journal of Cancer Research 2001年第1期13卷 22-26页

作者：毛友生 Austin Doyle Weidong Yang Yuetong Wei Mark J. Krasna Douglas D. Ross Greenebaum Cancer Center University of Maryland Medical School

Objective: To investigate the expression of novel multidrug resistance transporter (bcrp gene) from human MCF-7/AdrVp breast cancer cells in normal lung tissue and non-small lung cancer tissue. Methods: RNA was extracted immediately from fresh normal lung tissue and viable tumor tissue harvested from surgically resected specimens of non-small cell lung cancer patients. cDNA of bcrp gene was prepared by RT-PCR and was then amplified by PCR. cDNA products from those specimens were transferred to blotting membrane through electrophoresis and transferring technique and southern blot hybridization was eventually performed to detect the expression of bcrp gene. Results: RNA were extracted from 8 tumor tissue alone and 12 pairs of tumor tissue and normal lung tissue harvested from the same lung. Four patients’ RNA samples with poor quality due to degrading were discarded. cDNA products of bcrp gene were obtained by RT-PCR and were then amplified by PCR in the remain 16 patients’ RNA samples. Through southern blot hybridization, bcrp gene was found to be slightly expressed in various amounts in all normal lung tissue (10/10) and only in a half of tumor tissue samples (8/16). Conclusion: bcrp gene is slightly expressed in different amount in all normal lung tissue and only in a half of tumor tissue of non-small cell lung cancer patients. It is possible to induce it’s overexpression and to develop multidrug resistance during chemotherapy if using anthracycline anticancer drugs.

关键词： Multidrug resistance bcrp gene Non-small cell lung cancer Chemotherapy

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