系统转移S.S. 的系统转移. 黄金色驱动治疗HIV感染者抗CD4自身免疫力
bioRxiv : the preprint server for biology
|August 13, 2025
概括
黄金葡萄球菌 (Staphylococcus aureus peptidoglycan) 可能会在接受抗逆转录病毒疗法 (ART) 的艾滋病毒 (PWH) 患者中驱动抗CD4自身免疫力,从而阻碍免疫恢复. 这表明一种潜在的治疗点,用于改善PWH中的CD4+T细胞计数.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 病毒学 病毒学
背景情况:
- 抗CD4自身抗体阻碍了抗逆转录病毒疗法 (ART) 接受HIV (PWH) 患者的CD4+T细胞恢复.
- 在PWH中驱动抗CD4自身抗体的产生机制尚未完全理解.
- 新兴研究表明,黄金葡萄球菌,其糖素 (PGN) 和自身免疫的发展之间存在联系.
研究的目的:
- 研究黄金葡萄球菌 (PGN) 在艾滋病毒感染者 (PWH) 抗CD4自身抗体发育中的作用.
- 确定S. aureus转位,抗CD4自身抗体和在ART上的PWH中CD4+T细胞计数之间的关联.
- 在小鼠模型中探索S. aureus PGN和抗CD4自身免疫之间的因果关系.
主要方法:
- 来自没有ART的PWH,接受ART治疗的PWH和HIV阴性对照的血样本被分析为IgG自身抗体和S. aureus转位标志物.
- 给感染EcoHIV的小鼠注射了S. aureus或Bacillus subtilis PGN,以评估因果关系.
- 使用质谱测量来鉴定酸甘的结构.
主要成果:
- 在ART治疗中,抗CD4IgG在PWH中仍然升高,与CD4+T细胞计数相反相关,与S. aureus转位呈阳性.
- 在小鼠中,S. aureus的PGN给药诱导了抗CD4IgG,减少了肠道CD4+T细胞,并促进了CD4+T细胞亡.
- 虽然许多自身抗体通过ART正常化,但抗CD4IgG在接受治疗的PWH中仍然存在.
结论:
- 黄金葡萄球菌转位及其糖素可能会在ART的PWH中驱动抗CD4自身免疫.
- 这种自身免疫力可能会阻碍免疫复原和CD4+T细胞恢复.
- 向S. aureus及其PGN代表了一种潜在的治疗策略,用于改善PWH的免疫功能.
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