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第二种类型的先天性淋巴细胞可塑性有助于在异性造血干细胞移植后的复制受损
Sonia J Laurie1, Joseph P Foster1,2, Danny W Bruce1
1Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC, USA.
Nature communications
|July 17, 2024
概括
移植后的II型先天性淋巴细胞 (ILC2s) 转化为ILC1类细胞,从而损害了它们的复合. 这种可塑性导致免疫恢复不良,并可能加剧移植对宿主疾病.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 移植科学 移植科学
背景情况:
- 第二种类型的先天性淋巴细胞 (ILC2s) 对于粘膜平衡至关重要.
- 在异性造血干细胞移植 (allo-HSCT) 后,受损的ILC2复制是一种临床挑战.
- 了解移植后的ILC2恢复机制对于改善结果至关重要.
研究的目的:
- 为了研究 allo-HSCT 后不良 ILC2 溶解背后的机制.
- 为了确定移植后的ILC2s细胞和分子变化.
- 探索IGVHD中的ILC2变化的功能后果.
主要方法:
- 在小鼠中整合单细胞色素和转录组分析.
- 在实验室中,ILC2s暴露于促炎性细胞因子.
- 在急性移植与宿主疾病 (aGVHD) 模型中评估ILC2功能.
- 来自接受allo-HSCT的人类患者的周围血液细胞的分析.
主要成果:
- 在小鼠移植后发现了一种来自ILC2s的ILC1-样细胞的新型群体.
- 促炎性细胞因子诱导了混合ILC1-ILC2表型和ILC2-ILC1转化.
- ILC2s保护了aGVHD死亡率,而转换的ILC2s加速了它.
- 鼠ILC2复制剂被所有活性T细胞减少.
- 人类aGVHD患者样本显示了改变的ILC2染色体景观.
结论:
- 移植后,ILC2s表现出可塑性,转化为类似ILC1的亲病原体状态.
- 这种转化有助于在 allo-HSCT 后的 ILC2 溶解受损.
- ILC可塑性是影响免疫恢复和aGVHD严重性的关键因素.
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