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- W2889602727 abstract "The correlation between cigarette smoking and the onset of non-small cell lung cancer is well documented. Enhanced proliferation, angiogenesis induction, and resistance to apoptosis were reported as direct results associated with exposure to nicotine (the active ingredient of cigarettes). Parthenolide is a sesquiterpene lactone with anticancer activity against different cancer types. In this study, we tested the ability of parthenolide to inhibit the proliferating effect of nicotine in lung cancer cell lines. MTT assay was used to measure cell survival of A549 and H526 cells treated with nicotine, parthenolide, and their combination. Angiogenesis inhibition was measured using VEGF detection kit and apoptosis induction was evaluated by measuring caspase-3 activity. Real time PCR assay was used to detect the change in expression of several genes associated with cell proliferation and apoptosis (CASP3, CASP7, CASP8, CASP9, P53, GADD45, BAX, BIM, Bcl-2, TOPO I, and TOPO II). Parthenolide inhibited lung cancer cells in a concentration-dependent manner and decreased the proliferation stimulating effect of nicotine. Caspase-3 activity and VEGF assays evidenced an apoptosis-inducing and VEGF- inhibiting effects of parthenolide. The real time PCR assay demonstrated that parthenolide down-regulated the expression of Bcl-2 and up-regulated the expression of E2F1, P53, GADD45, BAX, BIM, and CASP 3,7,8,9, which indicates an activation of P53- dependent apoptosis pathway in response to parthenolide. Furthermore, this pathway remained active in the presence of nicotine suggesting the ability of parthenolide to exclude the anti-apoptotic effect of nicotine. Our results indicate that parthenolide inhibits nicotine proliferating effect on lung cancer. The anticancer effect of parthenolide is mediated by angiogenesis inhibition and activation of P53- dependent apoptosis. Parthenolide is a promising natural product for inhibiting and treating nicotine-associated lung cancer. However, further studied on more lung cancer cell lines and on protein level are needed to fully understand its mechanisms of action." @default.
- W2889602727 created "2018-09-27" @default.
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- W2889602727 date "2018-11-01" @default.
- W2889602727 modified "2023-09-29" @default.
- W2889602727 title "Parthenolide inhibits tumor-promoting effects of nicotine in lung cancer by inducing P53 - dependent apoptosis and inhibiting VEGF expression" @default.
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- W2889602727 doi "https://doi.org/10.1016/j.biopha.2018.08.139" @default.
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