924-乳腺癌进展中驱动免疫逃逸的循环调节性T细胞 episode artwork

EPISODE · May 8, 2026 · 16 MIN

924-乳腺癌进展中驱动免疫逃逸的循环调节性T细胞

from 聊聊Sci

这项研究通过对人类和实验大鼠乳腺癌进行单细胞转录组测序及空间成像,揭示了从导管原位癌(DCIS)向浸润性乳腺癌(IBC)转变过程中的免疫逃逸机制。研究人员发现了一种被称为循环调节性T细胞(cycTreg)的关键细胞亚群,它们在癌症进展中显著扩张,并能有效预测患者的复发风险与生存率。实验表明,这些免疫抑制性细胞的产生是由2型树突状细胞(cDC2)的抗原提呈以及由成纤维细胞分泌的白细胞介素-33(IL-33)信号链共同驱动的。通过靶向OX40通路或中和IL-33,可以显著减少这种细胞的数量,进而重塑肿瘤免疫环境并增强杀伤性T细胞的活性。该研究不仅确定了cycTreg作为疾病进展的生物标志物,还为其作为乳腺癌免疫治疗的新靶点提供了理论依据。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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924-乳腺癌进展中驱动免疫逃逸的循环调节性T细胞

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