ZHANG Junxiang, KONG Zhaolu, SHEN Zhifen, et al. Radiosensitivity of a monoclonal human lung adenocarcinoma cell line with MDR phenotype induced by CDDP: an in vitro study[J]. Journal of Radiation Research and Radiation Processing, 2006,24(2):107-110.
ZHANG Junxiang, KONG Zhaolu, SHEN Zhifen, et al. Radiosensitivity of a monoclonal human lung adenocarcinoma cell line with MDR phenotype induced by CDDP: an in vitro study[J]. Journal of Radiation Research and Radiation Processing, 2006,24(2):107-110.DOI:
The study was to evaluate radiosensitivity of a monoclonal human lung adenocarcinoma cell line SPC−A−1/CDDP−4 with MDR phenotype induced by cisplatin (CDDP) compared with its parental cell SPC−A−1 in vitro. The glutathione (GSH) content and the radiosensitivity of SPC−A−1/CDDP−4 and SPC−A−1 cells were investigated in aerobic and under hypoxia, respectively. The radiosensitization effect of buthionine sulfoximine (BSO), an inhibitor of glutathione (GSH) synthesis, to SPC−A−1/CDDP−4 and SPC−A−1 cells was observed. The results indicated that the monoclonal human lung adenocarcinoma cell line SPC−A−1/CDDP−4 showed, to some extent, a cross−resistance to ,137,Cs γ−ray, in addition to its resistance to anticancer drugs (CDDP, ADM, MTX and VCR). The GSH content of SPC−A−1/CDDP−4 cells was higher than that of SPC−A−1 cells both in aerobic and under hypoxia which might account for it. BSO had radiosensitization effect to SPC−A−1/CDDP−4 and SPC−A−1 cells both in aerobic and under hypoxia, but it was stronger under hypoxia than in aerobic and it was stronger to SPC−A −1/ CDDP−4 cells than to SPC−A−1 cells.