在精神疾病中,大脑微血管内皮细胞和血脑屏障功能障碍在精神疾病中
Paulo Lizano1,2,3,4, Sovannarath Pong5,6,7, Stephanie Santarriaga7,8,9
1Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA, USA. lizanopl@gmail.com.
Molecular psychiatry
|September 21, 2023
概括
精神分裂症和双相情感障碍的血脑屏障缺陷可能源于内在的大脑微血管内皮细胞 (BMEC) 问题,而不仅仅是外周炎症. 准TNFα和MMP1可能会改善BBB缺陷亚型的屏障功能.
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
- 遗传学 遗传学 是一个
背景情况:
- 汇聚的证据表明血脑屏障 (BBB) 功能障碍和精神分裂症 (SZ) 和双相情感障碍 (BD) 中的外周炎症.
- 目前尚不清楚BBB缺陷是否与大脑微血管内皮细胞 (BMEC) 固有,还是受到外周炎性细胞因子的影响.
研究的目的:
- 通过基于干细胞的模型,研究与SZ和BD中BBB功能障碍相关的BMECs的内在细胞和分子缺陷.
- 确定潜在的治疗目标,以改善精神疾病中的BBB缺陷.
主要方法:
- 从SZ,BD和健康的对照 (HC) 实验对象中诱导的多能干细胞 (iPSC) 被分化为类似BMEC的细胞.
- 评估了紧结蛋白的基因/蛋白质表达,超内皮电阻 (TEER) 和透性.
- 测量了细胞因子水平和矩阵金属酶1 (MMP1) 活性.
主要成果:
- 来自SZ和BD的BMEC在屏障完整性方面与HC的BMEC并没有固有的差异.
- 一个SZ和BD线的子集表现出BBB-赤字亚型,具有降低的屏障功能和降低的Claudin-5 (CLDN5) 水平.
- 在BBB缺陷组中,增加的MMP1活性与降低的CLDN5和受损的BBB功能相关,而TNFα和MMP1抑制有所改善.
结论:
- 潜在的内在BMEC缺陷有助于精神疾病中的BBB干扰.
- TNFα和MMP1被确定为缓解特定患者亚型BBB缺陷的有希望的治疗标.
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