雄激素受体的激活抑制了体内内皮细胞的迁移 in vitro和体内血管生成 in vivo
Yen-Nien Huo1, Hsiang-Yu Yang1, Hung-Yen Ke1
1Division of Cardiovascular Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan.
European journal of cell biology
|September 17, 2024
概括
雄激素受体 (AR) 激活通过影响RhoA活性和VEGF分泌来抑制内皮细胞迁移和血管生成. 这项研究澄清了ARAR.
科学领域:
- 内分泌学和细胞生物学
- 血管生成的分子机制
背景情况:
- 以前已经证明,雄激素受体 (AR) 激活可以通过非基因组途径减少内皮细胞的增殖.
- 内皮细胞迁移是血管生成的关键过程,使其成为AR调节的潜在目标.
研究的目的:
- 研究AR激活对内皮细胞迁移的影响.
- 阐明AR介导的内皮细胞迁移和血管生成的调节背后的分子机制.
主要方法:
- 人类静脉内皮细胞 (HUVECs) 用AR激动剂 (美特利博龙,二) 和对抗剂治疗.
- 抗激素抗击,RhoA活性测定和RhoA降解研究 (无化,p27复合体形成).
- 细胞内和分泌的VEGF和CTGF水平分析,体内斑马鱼和小鼠母体塞测试.
主要成果:
- 根据剂量,AR激活减少了HUVEC迁移,这种效应被AR抗剂或敲击逆转.
- 抗逆转基因激动剂通过cSrc/FAK/paxillin通路抑制了RhoA活性,并促进了RhoA降解,从而减少了HUVEC迁移.
- AR激活增加了细胞内VEGF和CTGF,但由于VEGF-CTGF复合体的形成,减少了VEGF分泌,从而抑制了体内血管生成.
结论:
- AR激活通过涉及RhoA调节和改变VEGF/CTGF动态的机制抑制内皮细胞迁移和血管生成.
- 这些发现揭示了新的分子通路,通过AR信号影响血管发育.
- 准AR信号可能为血管生成相关疾病提供治疗策略.
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