β-基托桑减轻了肝脏巨细胞驱动的炎症,并逆转了与衰老相关的认知障碍
Chenming Zou1,2, Ruihua Cai1,2, Yunbing Li1,2
1The Engineering Technological Center of Mushroom Industry, Minnan Normal University, Zhangzhou 363000, China.
iScience
|September 16, 2024
概括
贝塔-基托桑抗击肝炎和神经炎症,改善老化和LPS刺激模型中的认知功能. 它通过阻断TLR4-MD-2复合体起作用,为认知障碍提供治疗潜力.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
背景情况:
- 新出现的证据将肝炎与认知障碍联系在一起,但与年龄相关的机制尚不清楚.
- 肝脏巨细胞激活与神经炎症和认知衰退的进展有关.
研究的目的:
- 阐明肝脏巨细胞激活和老化中的神经炎症之间的机械联系.
- 调查β-基托桑在逆转与年龄相关和LPS诱导的认知障碍方面的治疗潜力.
主要方法:
- 使用了老化和注射LPS的C57BL/6J小鼠,斑马鱼和Caenorhabditis elegans模型.
- 系统地给予β-基托桑,并评估其对肝炎,细胞因子水平,VCAM1表达和神经炎症的影响.
- 进行细胞培养和分子对接,以确定β-基托对TLR4-MD-2复合体和NF-κB通路的作用机制.
主要成果:
- 贝塔-基托桑的使用改善了肝炎,减少了外围的促炎细胞因子 (TNF-α,IL-1β),并降低了VCAM1的表达.
- 在老年/LPS刺激小鼠中,治疗导致海马神经炎症减少和认知能力显著改善.
- 贝塔基托桑对斑马鱼和C. elegans模型的行为恢复有有益影响.
- 分子研究显示,β-基托通过屏蔽MD-2口袋来阻止TLR4-MD-2激活,抑制NF-κB通路.
结论:
- 通过准肝-大脑轴,β-基托桑有效地逆转与年龄相关的和LPS诱导的认知障碍.
- 该化合物通过抑制肝脏巨细胞激活和下游信号通路来减轻神经炎症.
- 贝塔基托桑为与衰老和炎症相关的认知功能障碍提供了一个有前途的治疗策略.
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