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人类诱导的多能干细胞衍生中性粒细胞显示强大的抗微生物功效
Xing Hu1,2,3,4, Baoqiang Kang1,5,3,4, Mingquan Wang5,4
1National Key Laboratory of Immune Response and Immunotherapy, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China.
Cell regeneration (London, England)
|March 21, 2025
概括
人类诱导的多能干细胞 (hiPSCs) 可以产生具有强大的抗菌能力的中性粒细胞 (iNEUs). 这些iNEU显示出在中性粒细胞功能障碍条件下治疗致命感染的前景.
科学领域:
- 免疫学 免疫学 免疫学
- 干细胞生物学 干细胞生物学
- 传染性疾病 传染性疾病
背景情况:
- 中性粒细胞是对抗感染的关键先天性免疫细胞.
- 中性粒细胞功能障碍会导致严重的健康问题,包括危及生命的感染.
- 人类诱导的多能干细胞 (hiPSCs) 为产生治疗用途的中性粒细胞提供了潜在的来源.
研究的目的:
- 开发一种可扩展的方法,在定义的化学条件下从hiPSCs (iNEUs) 生成中性粒细胞.
- 评估hiPSC衍生的中性粒细胞 (iNEUs) 的抗菌作用和功能特征.
- 在细菌感染的临床前模型中评估iNEUs的治疗疗效.
主要方法:
- 在化学定义的介质中从hiPSCs生成iNEU的可扩展协议的开发.
- 描述iNEU的功能,包括细胞化,迁移和中性粒细胞外细胞陷 (NET) 的形成.
- 在体外评估iNEU对关键细菌病原体 (K. pneumoniae,P. aeruginosa,E. coli,S. aureus) 的杀死活性.
- 在鼠标模型中对iNEU输血疗效的体内评估,该模型是具有诱导性中性粒细胞功能障碍的致命细菌感染.
主要成果:
- 一种可扩展的方法在定义条件下成功地从hiPSCs生成 iNEU.
- iNEUs表现出特有的中性粒细胞功能,如细胞分裂,迁移和NET形成.
- iNEUs对一系列格拉姆阴性和格拉姆阳性细菌表现出显著的杀伤力.
- 在患有中性粒细胞功能障碍和致命细菌感染的小鼠中,输血iNEU提高了生存率.
结论:
- 由hiPSC衍生的中性粒细胞 (iNEUs) 具有强大的抗菌能力.
- iNEUs代表了与中性粒细胞功能障碍相关的严重感染的有前途的基于细胞的治疗方法.
- 这种可扩展的生成方法有助于iNEUs在输血治疗中的潜在临床应用.
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