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- W2088377303 abstract "Abstract [Background] Metformin has a potential to inhibit tumor growth in various cancer cell lines in vitro and in vivo. [Purpose] To elucidate anti-proliferative actions of the agent on various types of human lung cancer cell lines, and to evaluate combined effects with cisplatin. [Methods] Cell lines used consisted of four human lung cancer cell lines, RERF-LC-AI (squamous cell carcinoma), A549 (adenocarcinoma), IA-5 (large cell carcinoma) and WA-hT (small cell carcinoma). Colonogenic assay was employed to evaluate colonogenicity with exposure to metformin for 1, 24 hours and 10 days. In cell surviving assay, 100,000 cells per plate were cultured for 4 days with metformin and/or cisplatin, and survived cells were counted. [Results] Metformin inhibited colonogenecity in every cell line in a dose-dependent manner when cells were exposed to the agent for 10 days, whereas 1- and 24-hour exposure yielded not significant or only mild effects, with the degree varied depending on cell lines. With cell surviving assay at the metformin concentrations where 70% (IC70) and 30% (IC30) of the cells survived for each cell line, apoptosis was not increased over control groups in every cell line except for WA-hT that showed significant increase in apoptosis with metformin. Significant alteration in cell cycle distribution with the agent was not observed in all of the 4 cell lines. For evaluating combination treatment consisting of metformin and cisplatin, cisplatin at doses of IC50 and IC10 was combined with metformin. Inhibitory effects of metformin on cell proliferation were slightly suppressed with cisplatin at its dose of IC50 in all except for in A549. High dose (IC10) of cisplatin almost completely countervailed or even reversed the metformin effects in all cell lines, again except for A549 where a modest but significant sub-additive effect was observed. [Conclusions] Metformin has anti-proliferative effects on various types of human lung cancer cell lines. Although apoptosis was observed only in a small-cell lung cancer cell line, its effects may not depend on apoptosis in other 3 cell lines. Alteration of cell cycle distribution was not observed in all cell lines. Metformin and cisplatin were antagonistic especially with higher dose cisplatin. Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 2737. doi:1538-7445.AM2012-2737" @default.
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- W2088377303 date "2012-04-01" @default.
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- W2088377303 title "Abstract 2737: Anti-proliferative action of metformin on various types of human lung cancer cell lines" @default.
- W2088377303 doi "https://doi.org/10.1158/1538-7445.am2012-2737" @default.
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