帕斯泰雷拉多达菌感染诱导血脑屏障的破坏,通过减少紧密的结节和粘附邻近的大脑微血管内皮细胞之间的结节
Lin Lin1,2,3, Haixin Bi1,2,3, Jie Yang1,2,3
1National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China.
Veterinary research
|August 29, 2024
概括
帕斯托雷拉多性脑膜炎通过破坏紧密的接口,增加了血脑屏障的透性. 这种病原体可能通过半细胞迁移穿越屏障,为动物传播疾病机制提供了新的见解.
科学领域:
- 神经科学是一个神经科学.
- 传染性疾病 传染性疾病
- 微生物学 微生物学
背景情况:
- 由Pasteurella multocida引起的脑膜炎在人类和动物中临床上得到了认可.
- 通过P. multocida入侵中枢神经系统的机制在很大程度上仍未被阐明.
研究的目的:
- 调查P. multocida感染对血脑屏障 (BBB) 透性的影响.
- 为了阐明P. multocida的BBB穿越背后的分子机制.
主要方法:
- 在体内小鼠模型和体内人类大脑微血管内皮细胞 (hBMEC) 模型被利用.
- 分析包括评估BBB透性,紧结和粘附结蛋白表达 (ZO1,克劳丁-5,奥克卢丁,E-cadherin).
- 研究信号通路 (HIF-1α/VEGFA,NF-κB) 并使用传输电子显微镜.
主要成果:
- 在小鼠和hBMEC模型中,P. multocida感染显著增加了BBB透性.
- 紧结蛋白 (ZO1,克劳丁-5,奥克卢丁) 和E-cadherin的表达减少.
- 观察到HIF-1α/VEGFA和NF-κB信号通路的激活,NF-κB有助于化学激素的产生.
结论:
- P. multocida感染通过降低节点蛋白的调节,损害了BBB的完整性.
- 该研究确定了HIF-1α/VEGFA和NF-κB信号作为P. multocida的BBB破坏中的关键调解者.
- 类似细胞的迁移被认为是P. multocida穿越哺乳动物BBB的主要机制,进步了对这种动物传染病原体的病原体的理解.
更多相关视频
09:58A Choroid Plexus Epithelial Cell-based Model of the Human Blood-Cerebrospinal Fluid Barrier to Study Bacterial Infection from the Basolateral Side
Published on: May 6, 2016
14.2K
10:12Neisseria meningitidis Infection of Induced Pluripotent Stem-Cell Derived Brain Endothelial Cells
Published on: July 14, 2020
2.3K
相关概念视频
The Blood-brain Barrier
47.0K
Overview
47.0K
Adherens Junctions
4.7K
Strong contact points between adjacent cells anchor them to each other, forming tissues. Such anchoring junctions are of two types – adherens junctions and desmosomes. Adherens junctions are abundant in tissues such as epithelium and endothelium, forming a continuous zone of adhesion called the adhesion belt. In other tissues, such as heart muscle, they appear as clusters, linking the cells to produce coordinated heart muscle contraction.
Adherens Junctions are Dynamic
Adherens Junctions are Dynamic
4.7K
