人类和 rhesus macaques 补充介导免疫的性别和物种相关差异
Natasha S Kelkar1, Benjamin S Goldberg2, Jérémy Dufloo3
1Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, New Hampshire, USA.
mBio
|February 22, 2024
概括
性影响人体补充系统,女性经常表现出比男性更高的免疫活性. 然而, rhesus macaques 缺乏这些与性别相关的补充差异,质疑它们作为人类模型的使用.
科学领域:
- 免疫学 免疫学 免疫学
- 补充系统生物学 补充系统生物学
- 比较免疫学比较免疫学
背景情况:
- 补体系统调节先天性,幽默性和适应性免疫.
- 性别是免疫反应中已知的变量,但其对补体的影响在人类和 rhesus macaques 中未得到充分研究.
研究的目的:
- 研究人类和 rhesus macaques 的补充系统丰度和活动的性别相关差异.
- 为了比较物种和性别之间的补充系统功能.
主要方法:
- 分析了来自90名人类和72名 rhesus macaque 的血清样本.
- 测量了补充成分 (C1q,C3b) 的丰度和活性.
- 进行了补充介导的溶解试验.
主要成果:
- 补充蛋白序列被保存,但在人类和之间水平有显著差异.
- 人类雌性表现出比雄性或更高的补充介导的活动.
- 在补体沉积和功能方面观察到特定于物种和特定于性别的差异.
结论:
- 在人类补充系统中发现了与性别相关的显著差异,这种差异在 rhesus macaques 中不存在.
- 这些发现凸显了模型在研究人类补体生物学方面的潜在局限性.
- 了解人类的基于性别的补充差异可以为临床实践和研究提供信息.
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