CircSTRBP通过通过招募IGF2BP1的IGF2BP1通过增加NOX4mRNA稳定性来促进H2O诱导的镜片表皮细胞功能障碍
Di Li1, Xuanyi Che1, Ningning Gao1
1Department of Ophthalmology, Shaanxi Provincial People's Hospital, Xi'an, China.
Experimental eye research
|February 10, 2024
概括
循环RNA circSTRBP通过增加镜片上皮细胞中的氧化应激和亡来促进与年龄相关的白内障. 它通过类似胰岛素的生长因子2mRNA结合蛋白1 (IGF2BP1) 增强尼古丁胺氨酸二核酸氧化酶亚单元4 (NOX4) 的稳定性.
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:
- 与年龄相关的白内障 (ARC) 发展与透镜上皮功能障碍和改变的循环RNA (circRNA) 表达相关.
- 循环RNA在各种细胞过程和疾病发病过程中发挥着关键作用.
研究的目的:
- 调查circSTRBP (hsa_circ_0088,427) 在过氧化 (H2O2) 诱导的人类透镜上皮细胞 (SRA01/04) 中的作用及其与年龄相关的白内障的参与.
主要方法:
- 对circSTRBP,STRBP和NOX4.4进行定量逆转录聚合酶链反应 (qRT-PCR).
- 细胞增殖,循环和细胞亡测定 (EdU,CCK-8,流细胞计).
- 对Caspase 3,ROS,MDA和GSH-PX的生物化学测定;对NOX4的西部斑;对circSTRBP-IGF2BP1相互作用的RNA免疫沉 (RIP).
主要成果:
- 在ARC患者的透镜表皮和H2O2处理的细胞中,CircSTRBP和NOX4水平升高.
- 循环STRBP敲击逆转了H2O2诱导的细胞增殖抑制,细胞亡和氧化应激.
- CircSTRBP与IGF2BP1结合,增强NOX4mRNA的稳定性和表达,从而促进H2O2诱导的亡和氧化应激.
结论:
- 循环STRBP通过IGF2BP1招募稳定NOX4mRNA,加剧H2O2诱导的透镜上皮细胞亡和氧化应激.
- CircSTRBP成为与年龄相关的白内障的潜在治疗.
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