HDAC3调解了视网膜内皮细胞的新陈代谢重编程和血管生成
Christian D Mitchell1, Carol A Morris1, Melissa Wild1
1Department of Pharmacology and Toxicology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
Acta pharmacologica Sinica
|September 30, 2025
概括
基斯脱乙酶3 (HDAC3) 通过促进细胞代谢向糖解转化,驱动病态视网膜新血管化. 抑制HDAC3或其下游途径可能为糖尿病视网膜病变中的视力丧失提供新的治疗方法.
科学领域:
- 眼科医生 眼科 眼科
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 病理性视网膜新血管化 (NV) 在糖尿病视网膜病变 (DR) 和早产视网膜病变中导致视力丧失.
- 视网膜缺氧是NV的关键驱动因素,导致失控和漏血的血管生长.
- 目前的疗法有效性有限,突出显示需要新的治疗点.
研究的目的:
- 确定3 (HDAC3) 基因素脱乙酶在实验性NV病变发生中的作用.
- 研究HDAC3影响视网膜内皮细胞代谢和血管生成的分子机制.
主要方法:
- 氧气诱导视网膜病变 (OIR) 模型在小鼠中诱导病态NV.
- 在实验室中使用培养的牛视网膜内皮细胞 (REC) 进行氧气-葡萄糖剥夺/再输液 (OGD/R) 的研究.
- 分析HDAC3表达,细胞迁移,蛋白质组定型,糖解和线粒体形态;用HDAC3抑制剂RGFP966和线粒体裂变抑制剂Mdivi-1进行治疗.
主要成果:
- 在OIR小鼠和人类DR样本的视网膜血管中增加了HDAC3表达,在OGD/R.之后的REC中增加了REC.
- HDAC3抑制 (RGFP966) 或敲击减弱的OGD/R诱导的REC迁移和血管生成.
- 抑制HDAC3抑制了OGD/R诱导的2hexokinase (HK2),糖解和线粒体分裂的上调.
结论:
- 在病理性NV中,HDAC3发挥着至关重要的作用,通过线粒体裂变和HK2信号传递,促进内皮细胞对糖解的代谢重编程.
- 准HDAC3或其下游代谢途径为病理性NV提供了一个有希望的治疗策略.
- 抑制HDAC3可以防止OGD/R诱导的代谢变化和视网膜内皮细胞的病态血管生成.
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