1626-Kmt2c/d缺失驱动尿路上皮肿瘤转化及其机制研究 episode artwork

EPISODE · Sep 28, 2026 · 17 MIN

1626-Kmt2c/d缺失驱动尿路上皮肿瘤转化及其机制研究

from 聊聊Sci

这项研究通过基因工程小鼠模型深入探讨了Kmt2c和Kmt2d基因缺失对尿路上皮的影响,发现这些表观遗传修饰因子的功能丧失是诱发膀胱癌的早期关键事件。虽然仅有基因缺失不足以直接形成肿瘤,但它会导致细胞分化受阻并显著增强干细胞特性,使组织进入一种预癌变状态。这种分子层面的重编程改变了H3K4甲基化在基因组上的分布,进而激活了炎症及生长相关的早期基因反应。此外,研究证实Kmt2c/d双敲除会增强上皮-间质转化能力,并增加组织对表皮生长因子受体(EGFR)抑制剂的治疗敏感性。这一发现揭示了场效应(field effect)在癌症起源中的作用,为早期干预和精准治疗提供了科学依据。References:Wang N, Pachai M R, Li D, et al. Loss of Kmt2c or Kmt2d primes urothelium for tumorigenesis and redistributes KMT2A–menin to bivalent promoters[J]. Nature Genetics, 2025, 57(1): 165-179.前往小宇宙评论区与主播互动

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1626-Kmt2c/d缺失驱动尿路上皮肿瘤转化及其机制研究

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