微生物癌症免疫疗法重编程血液形成,以增强骨髓驱动的抗瘤免疫力
Andrew W Daman1, Anthony C Antonelli2, Gil Redelman-Sidi3
1Immunology and Microbial Pathogenesis Program, Graduate School of Medical Sciences, Weill Cornell Medicine, New York, NY, USA; Department of Pathology and Laboratory Medicine, Division of Cell and Cancer Pathobiology, Weill Cornell Medicine, New York, NY, USA.
Cancer cell
|May 30, 2025
概括
菌菌 Bacillus Calmette-Guérin (BCG) 重新编程骨髓干细胞以增强抗瘤免疫力. 这种免疫疗法重塑瘤微环境,促进T细胞反应,并与检查点阻断协同,以改善癌症治疗.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 干细胞生物学 干细胞生物学
背景情况:
- 菌根 Calmette-Guérin (BCG) 是一种结核病疫苗和膀癌免疫疗法.
- 静脉BCG重新编程骨髓的造血干细胞和原生细胞 (HSPCs),从而提供对感染的保护.
- HSPC重编程在BCG通过膀给予的抗瘤作用中的作用尚不清楚.
研究的目的:
- 为了调查BCG是否通过静脉注射重新编程HSPC并促进抗瘤免疫力.
- 探索BCG重编程的HSPC增强抗瘤反应的机制.
主要方法:
- 将BCG注入小鼠膀,分析骨髓殖民的情况.
- 在小鼠和人类中重新编程HSPCs.
- 骨髓形成和免疫细胞种群的评估.
- 评估抗瘤免疫力和与检查点封锁的协同作用.
主要成果:
- 肠道BCG殖民骨髓,并在小鼠和人类中重新编程HSPCs.
- 经BCG重编程的HSPC增强骨髓形成,增加中性粒细胞,单细胞和树突细胞.
- 这些重新编程的HSPC足以通过重塑瘤微环境来增强抗瘤免疫力.
- BCG诱导的HSPC重编程驱动T细胞依赖的抗瘤反应,并与检查点阻塞疗法协同作用.
结论:
- 肠道BCG给药具有通过HSPC重编程和改变的造血作用的系统效应.
- HSPC重编程增强了T细胞依赖性瘤免疫力的先天免疫驱动因素.
- 这项研究强调了HSPC重编程作为癌症免疫治疗中的治疗策略的潜力.
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