通过激活Src通路调节内皮结节通过激活Src通路启动血管生成的肌衍生FSTL1可以通过硫化进行上调调节
相关实验视频
Updated: Jul 16, 2025

07:48
Assessing Therapeutic Angiogenesis in a Murine Model of Hindlimb Ischemia
Published on: June 8, 2019
8.8K
Meng-Yao Li1, Ru-Pan Gao2, Qi Zhu1
1Shanghai Key Laboratory of Bioactive Small Molecules and Shanghai Key Laboratory of Clinical Geriatric Medicine, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, China.
American journal of physiology. Cell physiology
|September 11, 2023
概括
硫化 (H2S) 通过骨肌肉中的人类抗原R (HuR) 升高调节类1 (FSTL1). 然后,这种FSTL1通过通过Src通路打开内皮细胞结口来促进血管生成.
科学领域:
- 心血管生物学 心血管生物学
- 分子医学是分子医学.
- 再生医学是一种再生医学.
背景情况:
- 已知硫化 (H2S) 能在缺血事件后促进血管生成和重血管化.
- 利他丁类1 (FSTL1) 是一种肌酸蛋白,可以保护心血管系统免受缺血性损伤.
- 了解H2S,FSTL1和血管生成之间的相互作用对于开发新型治疗策略至关重要.
研究的目的:
- 研究FSTL1在H2S诱导的血管生成中的作用.
- 阐明 H2S 介导的 FSTL1 调节的分子机制及其血管生成效应.
主要方法:
- 利用小鼠后肢缺血模型来评估H2S对血液输液的影响.
- 采用西斑分析FSTL1和骨肌肉中的人类抗原R (HuR) 表达.
- 研究了外源性FSTL1对人类静脉内皮细胞 (HUVECs) 迁移和屏障透性的影响.
- 研究了Src和VEGFR2信号通路在FSTL1-介导血管生成中的参与.
主要成果:
- 在缺血后肢中,H2S的使用加速了血液 perfusion.
- H2S在骨肌中增加了FSTL1和HuR水平,而HuR则调节了H2S诱导的FSTL1上调.
- 外源性FSTL1通过破坏细胞间连接,增强了HUVEC迁移,并增加了内皮屏障的透性.
- FSTL1降低了VE-Cadherin,Occludin,Connexin-43和Claudin-5的表达,并激活了Src和VEGFR2的酸化.
- Src 抑制,但不是 VEGFR2 抑制,阻断了 FSTL1 诱导的血管效应.
结论:
- 通过增加HuR水平,H2S通过提高骨肌肉中的FSTL1表达的调节.
- 帕克林FSTL1通过Src信号通路打开细胞间内皮结,启动血管生成.
- 这项研究揭示了连接H2S,FSTL1和血管生成的新型分子机制,为缺血性疾病提供治疗潜力.
相关概念视频
Regulation of Angiogenesis and Blood Supply
2.6K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.6K
Mechanism of Angiogenesis
5.5K
Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...
5.5K
Intracellular Signaling Affects Focal Adhesions
2.7K
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...
2.7K
TGF - β Signaling Pathway
7.4K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
7.4K
PI3K/mTOR/AKT Signaling Pathway
3.6K
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...
3.6K

