长非编码RNAPVT1通过miR-30d-5p/CaMKIIδ轴在缺氧缺血性脑损伤中抑制细胞亡
Fengyan Zhao1, Junyan Liu2, Zihong Xiong3
1Department of Pediatrics, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Ministry of Education), NHC Key Laboratory of Chronobiology, West China Second University Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
Molecular neurobiology
|December 8, 2025
概括
长非编码RNAPVT1通过调节神经元亡来防止缺氧缺血性脑损伤 (HIBD). PVT1作为miR-30d-5p的海绵,调节CaMKIIδ表达以减少脑损伤.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 微RNA-30d-5p (miR-30d-5p) 在缺氧-缺血症后的神经元亡中起作用.
- 在缺氧缺血性脑损伤 (HIBD) 中,miR-30d-5p的精确分子机制尚未完全理解.
研究的目的:
- 阐明miR-30d-5p在患有HIBD的新生小鼠和遭受氧气-葡萄糖剥夺 (OGD) 的初级神经元中影响神经元亡的机制.
- 研究长非编码RNA PVT1 (lncRNA PVT1) 在HIBD的背景下及其与miR-30d-5p的相互作用中的作用.
主要方法:
- RNA测序 (RNA-seq) 用于识别差异表达的 lncRNAs.
- 光在位杂交 (FISH) 和免疫光染色以确定lncRNA PVT1的定位和表达.
- 在新生小鼠中进行HIBD的体内研究,以及使用暴露于OGD的初级神经元的体内研究.
- 操纵lncRNA PVT1和miR-30d-5p水平,以评估对神经元亡,脑损伤和相关分子通路的影响.
主要成果:
- RNA-seq确定了lncRNA PVT1作为高度差异表达的,并预测将结合miR-30d-5p.
- 在HIBD或OGD后的神经元中,lncRNA PVT1表达增加.
- 抑制PVT1加剧了OGD诱导的神经细胞亡和脑损伤,而PVT1过度表达显示出神经保护作用.
- PVT1通过海绵化miR-30d-5p对CaMKIIδ进行上调,影响GSK3β酸化和神经元亡.
结论:
- lncRNA PVT1在缺氧-缺血症引起的脑损伤中起到神经保护因素的作用.
- PVT1/miR-30d-5p/CaMKIIδ轴是调节HIBD中神经元亡的关键通路.
- 针对PVT1/miR-30d-5p/CaMKIIδ通路可能为HIBD提供治疗策略.
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