造血原生细胞的来源决定了它们产生先天性淋巴细胞的能力
Said Z Omar1, Vera van Hoeven1, Nienke J E Haverkate1
1Department of Experimental Immunology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands; Amsterdam Infection and Immunity Institute, Amsterdam, The Netherlands.
Cytotherapy
|February 16, 2024
概括
在全基造血细胞移植 (HCT) 后,先天性淋巴细胞 (ILCs) 的缓慢恢复可能源于成年造血原生细胞 (HPCs) 区分为ILCs的能力有限. 这影响了移植与宿主疾病 (GVHD) 的风险.
科学领域:
- 免疫学 免疫学 免疫学
- 移植生物学 移植生物学
- 细胞分化 细胞分化
背景情况:
- 全基性造血细胞移植 (HCT) 对于治疗血液疾病至关重要,但受移植与宿主疾病 (GVHD) 的阻碍.
- 化学疗法和放射治疗等治疗造成的组织损伤加剧了GVHD.
- 先天性淋巴细胞 (ILC) 对于组织修复和平衡至关重要,并且它们在HCT后的存在/重建与减少GVHD和粘膜炎相关.
研究的目的:
- 调查造血原生细胞 (HPC) 分化为成熟的辅助 ILC 子集的能力.
- 从不同的HPC来源探索影响ILC发展的因素.
主要方法:
- 开发一种含有ex vivo树皮细胞的培养系统.
- 从各种来源 (带血液,胎儿肝脏,成人HCT移植,成人骨髓) 培养HPC,以评估ILC差异化.
主要成果:
- 根据HPC来源,ILC的发展有很大的差异.
- 高频率的ILCs是由带血液和胎儿肝脏HPCs产生的.
- 低频率的ILCs,特别是组织保护ILC2和NKp44+ILC3子集,来自成年HPC来源.
结论:
- 成人HPCs在分化为ILCs方面表现出一种内在的限制.
- 这种内在的无能性可能解释了在异构HCT后观察到的慢慢和不完全的ILC恢复.
- 加强ILC复制后HCT的策略可能需要解决成人HPC的差异化潜力.
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