544-淋巴结转移引发的组织重塑与免疫耐受机制 episode artwork

EPISODE · Feb 23, 2026 · 18 MIN

544-淋巴结转移引发的组织重塑与免疫耐受机制

from 聊聊Sci

这项研究利用高参数空间蛋白质组学和空间转录组学技术,深入探讨了头颈鳞癌中淋巴结定植对全身免疫系统的影响。研究发现,肿瘤细胞进入淋巴结并非被动的扩散,而是一个主动诱导免疫抑制的过程,其标志是髓系细胞-癌症相关成纤维细胞(CAF)形成的特殊空间生态位。这种特定的空间结构通过激活调节性T细胞(Treg)和导致T细胞功能障碍,重塑了淋巴结的原始构造。令人关注的是,这种抑制效应不仅存在于肿瘤浸润区域,还会波及邻近及远端未受累的淋巴结。通过人类样本与小鼠模型的对比验证,研究揭示了TGF-β等分子在驱动这种系统性耐受中的关键作用。这些发现不仅阐明了肿瘤发生远端转移的机制,也为开发针对淋巴结微环境的新型免疫疗法提供了科学依据。References: Haist M, Baertsch M A, Reticker-Flynn N E, et al. Lymph node colonization induces tissue remodeling via immunosuppressive fibroblast-myeloid cell niches supporting metastatic tolerance[J]. Cancer Cell, 2026.前往小宇宙评论区与主播互动

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544-淋巴结转移引发的组织重塑与免疫耐受机制

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