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单细胞查发现ADAM12是阻碍抗瘤免疫力的纤维细胞检查点
Jianan Li1, Huilan Liu2, Qile Guo3
1Changping Laboratory, Beijing 102206, China; Biomedical Pioneering Innovation Center (BIOPIC), School of Life Sciences, Academy for Advanced Interdisciplinary Studies, National Key Laboratory of Metabolic Disorders and Esophageal Cancer Prevention and Treatment, Peking University, Beijing 100871, China; Peking University Beijing-Tianjin-Hebei Biomedical Pioneering Innovation Center, Tianjin 300405, China.
向与癌症相关的纤维细胞 (CAFs) 由于其可塑性而失败. 这项研究确定了ADAM12作为一个关键目标,它可以通过增强免疫反应和诱导瘤排斥来重新编程CAF来对抗癌症.
科学领域:
- 癌症生物学 癌症生物学
- 免疫学 免疫学 免疫学
- 遗传学 遗传学 是一个
背景情况:
- 癌症相关纤维细胞 (CAF) 对瘤生长至关重要,但由于其功能性可塑性和复杂的调节网络,它们是具有挑战性的治疗点.
- 以往针对CAF的临床试验在很大程度上失败了,这凸显了需要更深入地了解CAF异质性和瘤微环境中的调节.
研究的目的:
- 系统查患者衍生的纤维细胞,以确定新的调节回路和潜在的治疗点.
- 研究CAF的功能性可塑性,并发现可以用于抗癌疗法的机制.
主要方法:
- 在患者衍生纤维细胞上开发和应用一种使用互补CRISPR干扰 (CRISPRi) 和CRISPR激活 (CRISPRa) 的基于Perturb-seq的系统查方法.
- 分析分子检查点和监管程序,包括干扰素 (IFN) -I反应和TGF-β信号通路.
- 在小鼠癌症模型中的验证和与人类基因组学数据的整合.
主要成果:
- 确定一种抗瘤干扰素 (IFN) -I反应程序,以抵消CAF中瘤前的TGF-β信号传递.
- 发现ADAM12作为一个关键的分子检查点,调节纤维细胞中前瘤和抗瘤程序之间的平衡.
- 证明ADAM12的切除会重编程CAF,增强T细胞介导免疫力,并在临床前模型中导致瘤排斥.
结论:
- ADAM12在调节CAF表型和功能方面发挥着关键作用,作为潜在的治疗点.
- 向ADAM12可以重编程与癌症相关的纤维细胞以促进抗瘤免疫力并诱导瘤排斥,提供了一个有前途的新疗法策略.
- 这些发现为开发用于癌症治疗的新型纤维细胞向疗法提供了基础.
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