慢性轻度压力失调自,膜动力学和前皮层和大鼠海马的溶酶体状态
Cristina Ulecia-Morón1, Álvaro G Bris1, Karina S MacDowell1
1Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad Complutense de Madrid (UCM), Centro de Investigación Biomédica en Red de Salud Mental, Instituto de Salud Carlos III (CIBERSAM, ISCIII), Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Instituto Universitario de Investigación Neuroquímica (IUIN, UCM), Madrid, Spain.
概括
慢性压力会改变大脑特定区域的自和内体分类蛋白,影响 lysosomal 功能. 这些变化凸显了抑郁症等与压力相关的疾病的潜在治疗点.
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
- 细胞生物学 细胞生物学
背景情况:
- 大型抑郁症 (MDD) 的病理生理学与炎症有关.
- 自,细胞降解过程,调节炎症和免疫力,表明其在MDD中的作用.
- 了解压力引起的分子变化对于开发新型抑郁症疗法至关重要.
研究的目的:
- 研究慢性轻度压力对自,运输所需的内体分类复合体 (ESCRT) 和雄性大鼠前皮层 (FC) 和海马体 (Hp) 中 lysosomal 蛋白质表达的影响.
- 确定这些细胞通路的区域特异性变化在老鼠抑郁症模型中.
- 探索星体细胞在压力期间调节自的潜在作用.
主要方法:
- 对自标记物 (例如mTOR,ATG7,ATG16L1,ULK1,BECLIN1),ESCRT组件 (例如HRS,VPS37A,CHMP6,STAM2,TSG101) 和溶酶体蛋白质 (例如LAMP1,LAMP2A,CATHEPSIN D) 的蛋白质组分析,这些蛋白质在经历慢性轻度压力的雄性大鼠的FC和Hp中被发现.
- 压力和对照大鼠之间的蛋白质表达水平的比较.
- 对天体细胞参与自适配器SQSTM1/p62.2调节的评估.
主要成果:
- 慢性压力显著改变了自和ESCRT标记物的蛋白质表达,在FC和Hp中以特定区域的方式显著改变.
- 在压力过度的老鼠中,溶解体的存在增加,在FC和Hp中观察到溶解体蛋白的对立调节.
- 星球细胞似乎在调节自适配器SQSTM1/p62.2.中发挥着重要作用.
结论:
- 在自和ESCRT通路中,压力引起的干扰表明了不同脑区的差异调制.
- 改变了 lysosomal 蛋白质表达表明一种复杂的区域对慢性压力的反应.
- 这些发现强调了针对自,ESCRT和溶酶体通路在与压力相关的病理和抑郁症的治疗干预的潜力.
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