摘要
Objective: To explore the molecular mechanism of gemcitabine-resistance, the relative mRNA expression of five genes related to gemcitabine-resistance was detected in six lung cancer cell lines. Methods: The total RNA was extracted from six lung cancer cell lines GLC-82, NCI-H460, A549, 95-C, 95-D and QG56. Then the cDNA was amplified by real-time quantitative PCR method to quantify the gene expression of RRM1, PTEN, ERCC1, dCK and CDA. The cytotoxicity of gem- citabine to cell lines was tested by MTT method. Results: Among the detected six lung cancer cell lines, the mRNA level of RRM1, PTEN and ERCC1 in lung squamous cell line QG56 was highest, and the IC50 of gemcitabine to QG56 cell line was also highest. Conclusion: The mRNA expression of RRM1, PTEN and ERCC1 was correlated, and the high expression of RRM1 was related to gemcitabine resistance of lung cancer.
基金
Supported by a grant from the Capital Medical Developing Foundation of China (No. 03028)
