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由肠表皮衍生的IL-34重编程巨细胞以减轻胃肠道移植对宿主疾病

Aditya Rayasam¹, Alison Moe¹, Matthew Kudek²

¹Department of Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, USA.

Science translational medicine

|February 12, 2025

概括

介质素-34 (IL-34),一种肠道细胞因子,减轻胃肠移植对宿主疾病 (GVHD) 的严重程度. 缺少它会使GVHD恶化,而IL-34的使用会降低死亡率和炎症.

科学领域:

免疫学免疫学免疫学
胃肠病学胃肠病学
血液学血液学血液学

背景情况:

胃肠道 (GI) 移植与宿主疾病 (GVHD) 是全源造血干细胞移植的严重并发症.
效应细胞和调节细胞之间的免疫失调驱动GVHD,需要新的耐受性促进途径.

研究的目的:

识别和描述在GVHD期间调节肠道免疫耐受性的新途径.
调查介素-34 (IL-34) 在减轻GI GVHD中的作用.

主要方法:

利用GVHD的小鼠模型,并分析了人类患者的结肠活检.
研究了IL-34在接受者小鼠中的功能,包括它对免疫细胞表型和屏障完整性的影响.
管理重组IL-34以评估其治疗潜力.

主要成果:

接受者IL-34缺乏症加剧了GVHD致死性,肠道屏障功能障碍,并促进了致病性T细胞.
给予IL-34显著降低了GVHD死亡率和炎症,这取决于捐赠者巨细胞中阿波利波蛋白E的表达.
肠上皮细胞被确定为IL-34的主要来源,在人类GVHD患者中观察到类似的表达模式.

结论:

IL-34是一种关键的组织内在细胞因子,通过调节巨细胞和T细胞反应来改善GI GVHD.
IL-34 代表了一种有前途的治疗点,用于在肠道中管理GVHD.

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