Molecular mechanisms of (R,R)ZX-5 on NO synthesis and its anti-angiogenic effect.

Molecular mechanisms of (R,R)ZX-5 on NO synthesis and its anti-angiogenic effect.
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DOI:
10.3390/ijms13032717
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发表时间:
2012
影响因子:
5.6
通讯作者:
Xu HM
Xu HM
中科院分区:
生物学2区
文献类型:
--
作者:
Pan L;Hu JL;Wang WJ;Zhang XJ;Wei J;Liu ZD;Zhang YH;Xu HM

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(R,R)ZX-5是一种NO调节化合物,能显著增加新西兰兔脉络膜血流量。本文旨在探讨(R,R)ZX-5促进NO生成的分子机制。此外,我们还研究了(R,R)ZX-5的抗血管生成活性。Western blot分析显示,(R,R)ZX-5可上调人视网膜内皮细胞Akt、p-Akt(Thr 473)、eNOS和p-eNOS(Ser 1177)的表达,下调Cyclin D1的表达,升高细胞内游离钙浓度。此外,(R,R)ZX-5抑制鸡胚绒毛尿囊膜模型中的血管生长。结论:(R,R)ZX-5通过PI 3 K/Akt-eNOS和Akt-Ca ~(2+)-eNOS途径促进脉络膜血流。此外,(R,R)ZX-5可以抑制血管生成。
(R,R)ZX-5 is a NO regulatory compound, which could significantly increase choroidal blood flow in New Zealand rabbit. The aim of this paper is to investigate the molecular mechanism of (R,R)ZX-5 promoting NO production. Besides this, we also investigated the antiangiogenic activity of (R,R)ZX-5. Analysis of Western blot showed that (R,R)ZX-5 up-regulated the expression of Akt, p-Akt (Thr473), eNOS and p-eNOS (Ser1177), down-regulated the expression of Cyclin D1 in human retinal endothelial cells and escalated the intracellular free Ca2+ concentration. Additionally, (R,R)ZX-5 inhibited the growth of blood vessels in the chick chorioallantoic membrane model. It is concluded that (R,R)ZX-5 promotes choroidal blood flow through PI3K/Akt-eNOS and Akt-Ca2+-eNOS pathways. Additionally, (R,R)ZX-5 can inhibit angiogenesis.
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