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带有脂质的内皮细胞表现出与血脑屏障功能障碍,代谢重编程和老化大脑炎症增加相关的转录学特征
Sarah Otu-Boakye1,2,3, Duraipandy Natarajan1,2,3, Bhuvana Plakkot4
1Vascular Cognitive Impairment, Neurodegeneration and Healthy Brain Aging Program, Department of Neurosurgery, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd, BMSB 842, Oklahoma City, OK, 73104, USA.
GeroScience
|January 16, 2026
概括
老化的大脑显示内皮细胞 (ECs) 中的脂质液滴增加,损害了血脑屏障的功能,并导致脑血管衰老. 这表明了与年龄相关的认知衰退的新治疗点.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 代谢研究研究 代谢研究
背景情况:
- 脂质代谢失调与与年龄相关的疾病有关.
- 人们对大脑内皮细胞 (EC) 的衰老及其在脑血管功能障碍中的作用知之甚少.
- 以前的研究集中在质细胞上,忽视了EC.
研究的目的:
- 研究衰老对大脑内皮细胞 (ECs) 脂质代谢的影响.
- 确定脂肪积累在老年大脑中的功能后果ECs.
- 探索针对EC脂质代谢的潜在治疗策略,以应对与年龄相关的认知衰退.
主要方法:
- 来自年轻和老老鼠大脑的单细胞转录组数据的二次分析.
- 专注于内皮细胞 (ECs) 来识别与年龄相关的转录组变化.
- 在体内验证老年ECs中的脂质积累.
主要成果:
- 衰老显著增加了脑ECs中的脂质滴积累.
- 带有脂质的ECs显示出血脑屏障功能受损,衰老增加和炎症.
- 改变的EC新陈代谢包括脂肪酸氧化增加,糖分分解减少和线粒体功能受损.
结论:
- 大脑EC中的脂质积累导致结构,功能和代谢障碍.
- 这种脂质诱导的内皮功能障碍有助于大脑血管衰老.
- 向EC中的脂质积累机制可能为与衰老相关的认知衰退提供治疗效益.
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