1000-乳腺癌演进中的循环调节T细胞与免疫逃逸研究 episode artwork

EPISODE · May 19, 2026 · 20 MIN

1000-乳腺癌演进中的循环调节T细胞与免疫逃逸研究

from 聊聊Sci

这份研究通过对人类和大鼠乳腺癌的大规模单细胞转录组测序,揭示了从导管原位癌(DCIS)向浸润性乳腺癌(IBC)过渡过程中的免疫逃逸机制。作者鉴定出一类关键的增殖型调节性T细胞(cycTreg),它们在癌症进展中起到了核心的免疫抑制作用,且其数量能有效预测患者的复发风险和生存率。研究发现,2型树突状细胞(cDC2)通过抗原呈递直接驱动了这些细胞的扩张,而肿瘤相关成纤维细胞(CAFs)分泌的IL-33信号则进一步维持了这一抑制性环境。通过在动物模型中使用OX40激动剂联合PD-L1抑制剂,或者通过中和IL-33,可以显著削减cycTreg并重新激活全身的抗肿瘤免疫监视。这些发现为乳腺癌的早期干预和精准免疫治疗提供了全新的生物标志物与治疗靶点。References:Bui T M, Jimenez E R, Li Z, et al. Identification of cycling regulatory T cell precursors as conductors of immune escape during breast carcinoma progression[J]. Cancer Cell, 2026.前往小宇宙评论区与主播互动

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1000-乳腺癌演进中的循环调节T细胞与免疫逃逸研究

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