Atg16l1通过调节巨细胞中的糖解来促进肺移植耐受性
bioRxiv : the preprint server for biology
|November 19, 2025
概括
与自相关的16样1 (ATG16L1) 中一种常见的遗传变异会损害巨细胞功能,增加肺移植后慢性肺异位功能障碍 (CLAD) 的风险. 准这种途径可能会阻止CLAD.
科学领域:
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
- 细胞生物学 细胞生物学
背景情况:
- 慢性肺异位移植功能障碍 (CLAD) 限制了肺移植存活率,缺乏有效的治疗方法.
- 自对于细胞平衡至关重要,并在免疫反应中发挥作用.
- 一种特定的ATG16L1基因变异 (rs2241880) 与CLAD风险增加有关.
研究的目的:
- 调查自基因ATG16L1在CLAD发展中的作用.
- 阐明ATG16L1缺乏影响肺移植结果的分子机制.
主要方法:
- 鼠标正型肺移植模型.
- 骨髓细胞特异性Atg16l1删除和工程突变的分析.
- 转录概况,线粒体跟踪和巨细胞的代谢分析.
- 研究了缺氧诱导因素1α (Hif1α) 和糖解的作用.
主要成果:
- 在髓状细胞中的Atg16l1缺乏增加了小鼠对CLAD的敏感性.
- 缺乏导致线粒体损伤,损害了线粒体和增强了Hif1α通路激活.
- 巨细胞显示氧化酸化减少,糖解增加,IL-1β表达升高.
- 删除Hif1α或抑制糖解可以防止在Agg16l1缺乏的接受者中发生CLAD.
结论:
- 一种常见的ATG16L1遗传变异破坏了巨细胞代谢,并降低了肺移植耐受性.
- 这种干扰涉及线粒体功能障碍和改变的糖溶性活性.
- 准Hif1α或糖溶解为预防CLAD提供了潜在的治疗策略.
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