一个circRNA ceRNA网络参与慢性大脑低流后的认知功能障碍
Wan-Rong Jiang1,2, Yong-Ming Zhou1, Wei Wu3
1Department of Geriatrics, Renmin Hospital of Wuhan University, Wuhan, China.
Aging
|January 17, 2024
概括
慢性脑性低流 (CCH) 通过破坏神经纤维和增加神经炎症导致认知功能障碍. 循环RNAs (circRNAs) 起着关键作用,为CCH提供潜在的治疗点.
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
- 病理学 病理学 病理学
背景情况:
- 慢性大脑低血流 (CCH) 与认知能力下降有关,但其机制尚未完全理解.
- 现有的知识差距阻碍了对CCH引起的认知功能障碍的有效治疗方法的开发.
研究的目的:
- 调查CCH背后的神经病理机制.
- 探索信使RNAs (mRNAs) 和循环RNAs (circRNAs) 在CCH中的作用.
- 为了确定CCH的潜在治疗点.
主要方法:
- 利用已确立的慢性大脑低 perfusion (CCH) 的动物模型.
- 评估神经病理变化,包括神经纤维完整性 (MAP2,MBP染色),神经炎症 (星细胞/微细胞标记物) 和突触损失.
- 进行RNA测序以分析mRNA和circRNA的差异表达,随后进行GO和KEGG通路分析.
- 构建了一个circRNA-miRNA-mRNA竞争的内源RNA (ceRNA) 网络.
主要成果:
- CCH导致神经元纤维减少和脱髓化,而不会改变神经元数量.
- 在CCH中观察到神经炎症增加,质细胞激活和突触损失.
- RNA测序揭示了mRNA和circRNA表达的显著变化,丰富了免疫和炎症途径.
- 该ceRNA网络突出了神经炎症的作用,并突出了DE circRNAs与DE mRNAs共同表达.
结论:
- CCH诱导显著的神经病理变化,包括神经纤维损伤和神经炎症.
- circRNAs参与了CCH的发病过程,并可能作为神经炎症反应的关键调节者.
- circRNAs代表了缓解CCH相关认知功能障碍的有希望的治疗标.
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