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瘤DDR1促进原纤维对齐以诱导免疫排斥

Xiujie Sun¹, Bogang Wu¹, Huai-Chin Chiang¹

¹Department of Biochemistry and Molecular Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, DC, USA.

|November 4, 2021

概括

通过对准原纤维,驱动三阴性乳腺癌的免疫排除. 抑制DDR1促进T细胞透,并阻止瘤生长,提供新的免疫治疗点.

科学领域:

癌症学
免疫学
生物化学

背景情况:

免疫排除与三阴性乳腺癌 (TNBC) 的不良结果有关.
细胞外基质 (ECM) 有助于免疫排斥,但目前修改它的策略往往是无效的.
迪斯科伊丁域受体1 (DDR1) 是一个与癌症进展有关的原受体.

研究的目的:

研究DDR1在TNBC免疫排除中的作用.
确定DDR1影响瘤微环境和免疫细胞透的机制.
评估DDR1作为增强抗瘤免疫力的潜在治疗点.

主要方法:

利用TNBC的小鼠模型研究Ddr1切除对瘤生长和免疫细胞透的影响.
分析了人类TNBC样本,以与T细胞丰度相关联DDR1表达.
使用基因操纵和基于抗体的抑制研究了DDR1细胞外域 (DDR1-ECD) 的功能.

主要成果:

在小鼠模型中,Ddr1的切除导致T细胞透率增加和瘤生长抑制.
人类TNBC中的DDR1表达与内抗瘤T细胞有负相关性.
DDR1-ECD,而不是激酶域,对于免疫排除至关重要,调解原纤维对齐并阻碍免疫细胞透.

结论:

DDR1通过对准原纤维,从而阻碍T细胞透,促进TNBC的免疫排斥.
针对DDR1,特别是它的细胞外域,可以重新配置瘤ECM,增强抗瘤免疫力,并抑制瘤生长.
在TNBC和潜在的其他恶性瘤中,DDR1是一个有前途的免疫治疗点.

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