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- W2052156543 abstract "This study was designed to evaluate and characterize the molecular basis of antitumor activity of naturally occurring resveratrol (RES; 3,5,4′-trihydroxy-trans-stilbene) derivatives. The compounds were isolated from plants in previous studies and characterized spectroscopically. The antitumor activities of 31 RES derivatives, including dimers, trimers, and tetramers of RES, were evaluated using cell-based assays and validated on a murine model. Several trimeric and a tetrameric stilbenoids induced tumor cell apoptosis or growth arrest of several tumor cell lines with IC50 values (2.8–19.7 μM), significantly lower than that of RES (IC50>70 μM). Using pauciflorol B (PauB) as an example, we showed that the compound induced apoptosis p53 dependently, inducing p53 accumulation and p53-modulated gene expression in cells with wild-type p53, but not in those with nonfunctional p53. Reexpression of p53 in p53-null cells rescued cell death response. In parallel, the MAPK/p38 was activated and critical for PauB-induced killing. Interestingly, activation of p38 in p53 deficient cells was sufficient to drive cells into senescence via the p16–pRb pathway. Finally, PauB dose-dependently inhibited tumor growth on nude mice. Naturally occurring trimeric and tetrameric stilbenoids are potent antitumor agents. Those compounds exert antitumor effect through p53-dependent induction of apoptosis or senescence.—Qiao, H., Chen, X., Xu, L., Wang, J., Zhao, G., Hou, Y., Ge, H. M., Tan, R-X., Li, E. Antitumor effects of naturally occurring oligomeric resveratrol derivatives. FASEB J. 27, 4561–4571 (2013). www.fasebj.org" @default.
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- W2052156543 date "2013-08-07" @default.
- W2052156543 modified "2023-10-13" @default.
- W2052156543 title "Antitumor effects of naturally occurring oligomeric resveratrol derivatives" @default.
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- W2052156543 doi "https://doi.org/10.1096/fj.13-231613" @default.
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