在光滑肌肉细胞表型转换中的lncRNA-miRNA-mRNA相互作用的整合性分析
Aatish Mahajan1, Junyoung Hong1, Irene Krukovets1
1Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States.
Frontiers in genetics
|April 25, 2024
概括
在光滑肌细胞 (SMC) 中的多能性因子OCT4调节长非编码RNA (lncRNA) 和microRNA (miRNA),影响动脉样硬化中的细胞迁移和细胞化. 这项研究揭示了SMC表型转变中的新型OCT4依赖机制.
科学领域:
- 心血管生物学 心血管生物学
- 分子生物学分子生物学
- 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:
- 转录因子OCT4在动脉样硬化斑块中被重新激活,并在光滑肌细胞 (SMC) 中发挥动脉样保护作用.
- 在SMC中OCT4缺乏会降低细胞迁移,但潜在的分子机制尚不清楚.
- 已知OCT4可以调节胚胎干细胞中的长非编码RNA (lncRNA) 和microRNA (miRNA).
研究的目的:
- 研究OCT4调节的lncRNAs,mRNAs和miRNAs在SMC中的作用.
- 阐明OCT4通过哪些分子机制影响动脉样硬化中的SMC行为.
- 通过了解OCT4依赖性途径来确定动脉样硬化的潜在治疗点.
主要方法:
- 使用过的OCT4缺乏的老鼠大动脉SMC (MASMC) 用氧化脂POVPC治疗.
- 执行lncRNA/mRNA表达阵列和小RNA微阵列以识别差异表达分子.
- 基于基因组近距离和血管疾病相关性的 lncRNA-mRNA协会预测.
- 研究了lncRNA-miRNA相互作用及其目标.
主要成果:
- POVPC治疗在轴突引导和焦点粘附通路中的基因进行了上调.
- OCT4的淘汰改变了与细胞化相关的途径,与减少的SMC迁移和增加的细胞化一致.
- 确定了与OCT4缺乏相关的特定的lncRNAs (例如,ENSMUST00000140952,ENSMUST00000155531).
- 发现与细胞迁移相关的下调 miRNAs (例如,miR-196a-1,miR-10a) 和与抗迁移和益细胞形成相关的上调 miRNAs (例如,miR-10a/b,miR-15a/b).
结论:
- 综合性分析揭示了SMC中的新型OCT4依赖的lncRNA-miRNA-mRNA相互作用.
- 这些相互作用可能会调解SMC的表型转变,从而影响动脉保护.
- 这些发现为潜在的治疗策略提供了洞察力,这些策略针对动脉样硬化中OCT4调节的途径.
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