Tanshinone IIA inhibits HIF-1α and VEGF expression in breast cancer cells via mTOR/p70S6K/RPS6/4E-BP1 signaling pathway.
Tanshinone IIA inhibits HIF-1α and VEGF expression in breast cancer cells via mTOR/p70S6K/RPS6/4E-BP1 signaling pathway.
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丹参酮 IIA 通过 mTOR/p70S6K/RPS6/4E-BP1 信号通路抑制乳腺癌细胞中 HIF-1α 和 VEGF 的表达
DOI:
10.1371/journal.pone.0117440
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发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Gao N
中科院分区:
文献类型:
--
作者:
Li G;Shan C;Liu L;Zhou T;Zhou J;Hu X;Chen Y;Cui H;Gao N
Hypoxia-inducible factor 1α (HIF-1α) and vascular endothelial growth factor (VEGF) play important roles in angiogenesis and tumor growth. Tanshinone IIA (T2A) is a novel antiangiogenic agent with promising antitumor effects; however, the molecular mechanism underlying the antiangiogenic effects of T2A remains unclear. In the present study, we provided evidence showing that T2A inhibited angiogenesis and breast cancer growth by down-regulating VEGF expression. Specifically, T2A repressed HIF-1α expression at the translational level and inhibited the transcriptional activity of HIF-1α, which led to the down-regulation of VEGF expression. Suppression of HIF-1α synthesis by T2A correlated with strong dephosphorylation of mammalian target of rapamycin (mTOR) and its effectors ribosomal protein S6 kinase (p70S6K) and eukaryotic initiation factor 4E-binding protein-1 (4E-BP1), a pathway regulating HIF-1α expression at the translational level. In addition, we also found that T2A inhibited the angiogenesis and growth of human breast cancer xenografts in nude mice through suppression of HIF-1α and VEGF. Our study provides novel perspectives and potential targets for the treatment of human breast cancer.
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影响因子:
3.7
作者:
Gong Y;Li Y;Abdolmaleky HM;Li L;Zhou JR
通讯作者:
Zhou JR
影响因子:
12.8
作者:
Li, G.;Zhou, T.;Liu, L.;Chen, J.;Zhao, Z.;Peng, Y.;Li, P.;Gao, N.
通讯作者:
Gao, N.
影响因子:
5.7
作者:
Chen CT;Du Y;Yamaguchi H;Hsu JM;Kuo HP;Hortobagyi GN;Hung MC
通讯作者:
Hung MC
影响因子:
4.8
作者:
Chakraborty, G;Rangaswami, H;Kundu, GC
通讯作者:
Kundu, GC
影响因子:
50.3
作者:
Mabjeesh, NJ;Escuin, D;Giannakakou, P
通讯作者:
Giannakakou, P