相关实验视频
Updated: Jul 14, 2025

07:48
Assessing Therapeutic Angiogenesis in a Murine Model of Hindlimb Ischemia
Published on: June 8, 2019
8.8K
SUV39H1 抑制了小鼠肢体缺血中的血管生成
Wenhao Niu1, Wenyue Cao2, Feng Wu3
1Department of Cardiology, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, China.
Cell transplantation
|October 9, 2023
概括
SUV39H1是一种组分离子甲基转移酶,在肢体缺血中表达高. 抑制SUV39H1可以改善血液流动和血管形成,为周围动脉疾病提供新的治疗点.
科学领域:
- 分子生物学分子生物学
- 血管生物学 血管生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 周围动脉疾病 (PAD) 构成严重的健康威胁,但其潜在机制,特别是关节缺血,仍然不清楚.
- SUV39H1,一个组分离子甲基转移酶,通过甲基化组分离子H3氨酸调节转录活性 9.
- 了解SUV39H1的作用对于开发PAD新型治疗策略至关重要.
研究的目的:
- 调查SUV39H1在肢体缺血病变的产生中的作用.
- 探索针对SUV39H1在PAD治疗干预的潜力.
- 阐明SUV39H1影响血管生成和内皮功能的分子机制.
主要方法:
- 建立了一种用于肢体缺血的小鼠模型.
- 使用激光光斑对比成像 (LSCI) 评估输血.
- 组织学分析 (CD31和HE染色) 检测毛细血管密度和肌肉胀.
- 对SUV39H1和Catalase表达的西部斑分析.
- 人类静脉内皮细胞 (HUVECs) 的转录组测序使用SUV39H1 Knockdown.
- 在体外检测内皮细胞迁移,管形成和线粒体膜潜力.
主要成果:
- 在缺血性肌肉组织中,SUV39H1的表达显著升高.
- 药物抑制或遗传删除SUV39H1显著增强血 perfusion,毛细血管密度和血管生成在缺血四肢.
- 在氧化应激下,SUV39H1 Knockdown促进了内皮细胞迁移,管形成和线粒体膜潜力.
- 转录组测序揭示了SUV39H1在血管生成中的调节作用.
- 萨尔维阿诺酸B和阿斯特拉加索酸IV被确定为潜在的SUV39H1抑制剂.
结论:
- SUV39H1在促进肢体缺血方面发挥着至关重要的作用.
- 向SUV39H1代表了一种有前途的治疗策略,以改善内皮功能障碍和预防PAD.
- 抑制SUV39H1在缺血性疾病中增强了血管生成和血管修复机制.
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

