Aldosterone inhibits endothelial morphogenesis and angiogenesis through the downregulation of vascular endothelial growth factor receptor-2 expression subsequent to peroxisome proliferator-activated receptor gamma

被引：21

作者：

Fujii, Miki ^{[1
]}

Inoki, Isao ^{[1
]}

Saga, Makoto ^{[1
]}

Morikawa, Norihiro ^{[1
]}

Arakawa, Ken-ichiro ^{[1
]}

Inaba, Satoru ^{[1
]}

Yoshioka, Kazuaki ^{[2
]}

Konoshita, Tadashi ^{[1
]}

Miyamori, Isamu ^{[1
]}

机构：

[1] Univ Fukui, Fac Med Sci, Dept Internal Med 3, Eiheiji, Fukui 9101193, Japan

[2] Kanazawa Univ, Grad Sch Med, Dept Physiol, Kanazawa, Ishikawa 9208640, Japan

来源：

JOURNAL OF STEROID BIOCHEMISTRY AND MOLECULAR BIOLOGY | 2012年 / 129卷 / 3-5期

关键词：

Angiogenesis; Aldosterone; Eplerenone; VEGFR-2; PPAR gamma; MINERALOCORTICOID RECEPTOR; VEGF RECEPTORS; CELL GROWTH; EPLERENONE; BLOCKADE;

D O I：

10.1016/j.jsbmb.2011.12.014

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

070307 [化学生物学]; 071010 [生物化学与分子生物学];

摘要：

Angiogenesis plays a pivotal role in cardiovascular diseases such as ischemic heart disease, limb ischemia and heart failure, and has recently been shown to mediate various biological activities related to the pathogenesis of these diseases. In the present study, we evaluated the role of aldosterone in angiogenesis. Tube formation assay on Matrigel using human umbilical vein endothelial cells (HUVEC) revealed that aldosterone inhibited endothelial morphogenesis in a manner sensitive to eplerenone, a selective mineralocorticoid receptor antagonist. The anti-angiogenic effect of aldosterone was further confirmed by an in vivo angiogenesis assay using a Matrigel plug model in mice. Reverse transcription-mediated polymerase chain reaction and immunoblotting demonstrated that aldosterone downregulated the expression levels of vascular endothelial growth factor receptor-2 (VEGFR-2) and peroxisome proliferators-activated receptor gamma (PPAR gamma). VEGFR-2 expression was found to be enhanced in response to PPAR gamma activation by troglitazone, and attenuated by GW9662, a specific antagonist of PPAR gamma. In the tube formation assay, endothelial morphogenesis was stimulated by troglitazone, and inhibited by GW9662, indicating that PPAR gamma activation mediates positive regulation of angiogenesis through enhancement of VEGFR-2 expression. These data suggest that aldosterone inhibits angiogenesis through VEGFR-2 downregulation, subsequent to, at least in part, attenuation of PPAR gamma expression. The present findings provide a new insight into the possible therapeutic application of mineralocorticoid receptor blockade to various cardiovascular diseases. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：145 / 152

页数：8

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