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14-3-3-η与BCL-2相互作用,以保护人类内皮原生细胞免受ox-LDL触发的损伤

Hui Zhou¹, Xiaopei Sun¹, Yi Dai¹

¹Department of Cardiovascular Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.

Cell biology international

|December 15, 2023

概括

14-3-3-η蛋白保护内皮原生细胞 (EPC) 免受氧化低密度脂蛋白 (ox-LDL) 的损伤. 这种保护通过与BCL-2的相互作用发生,BCL-2是参与细胞存活的关键蛋白质.

科学领域:

心血管生物学心血管生物学
细胞机制细胞机制
分子生物学分子生物学

背景情况:

氧化低密度脂蛋白 (ox-LDL) 损害了内皮原生细胞 (EPC) 的功能.
14-3-3-η已被确定为一种保护因子,可以在EPC中防止ox-LDL引起的损伤.
14-3-3-η的保护作用背后的精确分子通路仍然不清楚.

研究的目的:

阐明14-3-3-η保护EPCs免受ox-LDL引起的损伤的分子机制.
为了研究14-3-3-η和BCL-2在ox-LDL暴露的背景下之间的关系.
确定BCL-2是否是14-3-3-η对EPCs的保护作用的调解者.

主要方法:

评估用ox-LDL处理的EPC中14-3-3-η和BCL-2的表达水平.
使用过度表达和淘汰技术调节14-3-3-η和BCL-2的表达.
评估这些调制对EPCs的功能影响.
在EPC中研究14-3-3-η和BCL-2的物理相互作用和同定位.

主要成果:

发现14-3-3-η和BCL-2的表达在牛LDL处理的EPC中被降低.
在用牛LDL处理的EPC中,14-3-3-η的过度表达导致BCL-2水平显著增加.
抑制BCL-2降低了14-3-3-η的表达,并减弱了14-3-3-η对EPCs的保护作用.
观察到14-3-3-η在EPC中与BCL-2进行局部化并与BCL-2直接相互作用.

结论:

14-3-3-η可以保护EPC免受ox-LDL引起的损伤.
这种保护机制是通过14-3-3-η与BCL-2的相互作用来实现的.
14-3-3-η/BCL-2相互作用在氧化应激下维持EPC功能方面发挥着至关重要的作用.

关键词:

14-3-3-η 的时间.在BCL-2中.灭症 (apoptosis) 是一种死亡的过程.体前代细胞是内皮前代细胞.氧化低密度脂蛋白 (ox-LDL) 是一种氧化低密度脂蛋白.

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