1096-生酮作用与铁死亡轴维持白血病干细胞存活 episode artwork

EPISODE · Jun 8, 2026 · 20 MIN

1096-生酮作用与铁死亡轴维持白血病干细胞存活

from 聊聊Sci

这篇研究揭示了酮体代谢在维持急性髓系白血病(AML)进展中的核心作用。研究发现,白血病干细胞(LSCs)通过脂肪酸氧化自主产生酮体BHB,而非仅仅依赖肝脏产生。这种代谢程序依赖于限速酶HMGCS2,它通过表观遗传方式抑制脱氢酶FADS2的表达,从而重塑细胞内的磷脂成分。这种重塑有效地阻止了铁死亡(一种由脂质过氧化引发的细胞死亡),从而维持了白血病细胞的存活与自我更新。重要的是,阻断这一代谢轴能显著削弱癌症进展,且不影响正常的造血功能,为临床治疗提供了精准的新靶点。References:Han X, Wang K, Ma W, et al. A ketogenesis-ferroptosis axis maintains leukemic stem cell survival and leukemia progression[J]. Cell Stem Cell, 2026.前往小宇宙评论区与主播互动

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1096-生酮作用与铁死亡轴维持白血病干细胞存活

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