杜基因酶USP9X控制中枢神经系统血管形成和屏障维护的Wnt信号
Yi Lei1, Jiandong Hu1, Jiyun Zhao1
1Department of Pharmacology, Tianjin Key Laboratory of Inflammation Biology, State Key Laboratory of Experimental Hematology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China; Laboratory of Molecular Ophthalmology and Tianjin Key Laboratory of Ocular Trauma, Ministry of Education International Joint Laboratory of Ocular Diseases, Department of Ophthalmology, Tianjin Medical University General Hospital, Tianjin 300052, China.
乌比基特异性酶9X结合 (USP9X) 对大脑内皮细胞至关重要,通过Wnt信号调节中枢神经系统血管化和屏障功能. 失去USP9X会损害这些过程,恶化中枢神经系统疾病模型.
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:
- 脱化酶在中枢神经系统血管化和屏障功能中的作用在很大程度上是未知的.
- 规范性Wnt信号传输对于维持中枢神经系统的血管完整性和发育至关重要.
研究的目的:
- 为了研究在中枢神经系统血管化和屏障功能中的基特异性酶9X结合 (USP9X) 的作用.
- 阐明USP9X影响这些过程的分子机制.
主要方法:
- 在大脑内皮细胞 (BECs) 中检测Wnt信号活动的功能丧失查.
- 产生和分析内皮特异性的Usp9x淘汰小鼠.
- 研究USP9X对β-catenin稳定性和无处不在性的影响.
- 在病态小鼠模型中评估中枢神经系统屏障功能.
主要成果:
- USP9X被确定为BEC的关键调节器,对于Wnt信号传输至关重要.
- 特定于内皮的 Usp9x 淘汰赛小鼠显示中枢神经系统血管化和屏障功能受损.
- USP9X通过催化K48多比基因链,直接稳定β-catenin.
- 在脑内出血和视网膜病变模型中,USP9x的丧失加剧了中枢神经系统屏障破坏.
结论:
- USP9X是中枢神经系统血管化和屏障功能的关键调节者,主要通过其调节Wnt信号.
- 稳定β-catenin的USP9X是其功能的一个关键机制.
- USP9X在维持中枢神经系统血管健康方面发挥着重要作用,对中枢神经系统疾病有影响.
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