C9orf72抑制了肠道细菌引起的全身和神经炎症
Aaron Burberry1,2, Michael F Wells1,2, Francesco Limone1,2,3
1Harvard Stem Cell Institute, Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA.
减少肠道细菌可以保护C9ORF72基因突变的小鼠免受神经退行性疾病 (如肌缩侧面硬化症和前性痴呆症) 的影响,这表明微生物组对大脑健康的干预.
科学领域:
- 神经科学
- 遗传学
- 免疫学
背景情况:
- C9ORF72重复扩张是ALS和FTD的常见原因.
- 这种突变通过RNA和蛋白质毒性导致神经退行.
- 降低C9ORF72功能会影响炎症控制.
研究的目的:
- 确定改变C9ORF72疾病风险的遗传或环境因素.
- 研究肠道微生物在C9ORF72相关的神经退行症中的作用.
主要方法:
- 在微生物丰富度改变的环境中研究C9orf72突变小鼠.
- 用广泛的抗生素来减少微生物负担.
- 从保护环境中进行肠道微生物移植.
主要成果:
- 减少免疫刺激的细菌保护突变小鼠免于过早死亡.
- 系统性炎症和自身免疫显著改善.
- 抗生素和微生物移植减弱了炎症表型.
结论:
- 肠道微生物组组成会影响C9ORF72相关的神经炎症.
- 微生物群调节可以防止神经退行和炎症.
- 这突显了肠-大脑轴在神经退行性疾病发病过程中的作用.
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