仅c-Myc就足以将纤维细胞重新编程成功能性巨细胞
Shanshan Li1, Guoyu Chen2, Xia Huang1
1Pediatric Translational Medicine Institute, Department of Hematology & Oncology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China.
Journal of hematology & oncology
|September 12, 2024
概括
使用c-Myc过度表达重新编程纤维细胞成为功能性巨细胞,为癌症免疫治疗提供了一种新的策略. 这种方法产生"现成"的巨细胞,克服了固体瘤细胞治疗方面的挑战.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 癌症研究 癌症研究
- 干细胞生物学 干细胞生物学
背景情况:
- 基于巨细胞的细胞疗法对固体瘤有前途,但在有效的巨细胞获取方面面临挑战.
- 诱导多能干细胞 (iPSC) 衍生的巨细胞是一个潜在的来源,但它们需要大量的时间和成本来产生.
- 将体细胞重新编程成巨细胞为推进基于细胞的癌症疗法提供了一个可行的替代方案.
研究的目的:
- 建立一种用于将纤维细胞重新编程成功能性巨细胞的新方法.
- 研究c-Myc在纤维细胞重编程成巨细胞中的作用.
- 在临床前癌症模型中评估重编程巨细胞的治疗潜力.
主要方法:
- 纤维细胞被重新编程成巨细胞使用c-Myc过度表达在iPSC介质.
- 流细胞计和单细胞RNA测序分析了髓状细胞复合体 (MCC) 和诱导巨细胞 (iMac) 组成.
- 在体外和体内使用各种癌症模型评估iMac的植入能力,表型,细胞和抗瘤功能.
主要成果:
- c-Myc的过度表达将纤维细胞重新编程成具有血液生成植入能力的CD45+MCC中间体.
- 在M-CSF刺激时,MCC中间体不断生成功能性,纯净的iMac,表现出NF-κB激活和促炎性表型.
- iMacs在白血病,乳腺癌和患者衍生异种移植模型中表现出增强的体内持续性和显著抑制瘤进展.
结论:
- 单独c-Myc就足以将纤维细胞重新编程成功能性的细胞巨细胞.
- 这种c-Myc介导的重编程策略提供了一种生成"现成"巨细胞的方法.
- 这些发现支持这种方法在克服抗癌免疫治疗中巨细胞获取障碍方面的潜力.
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