1425-非依赖mTORC1的TSC1-GYS2轴调控TSC糖原累积研究 episode artwork

EPISODE · Aug 12, 2026 · 22 MIN

1425-非依赖mTORC1的TSC1-GYS2轴调控TSC糖原累积研究

from 聊聊Sci

这项研究揭示了结节性硬化症(TSC)中肝脏糖原异常积累的新机制。研究发现,由TSC1或TSC2基因突变引起的疾病不仅通过经典的mTORC1通路发挥作用,还涉及一条此前未知的非依赖性路径。当TSC2缺失时,过剩的游离TSC1蛋白会抑制组蛋白去甲基化酶KDM5A,进而促进甲基转移酶METTL3的表达。这种代谢重编程通过m6A修饰稳定了GYS2信使RNA,导致肝脏糖原过度堆积并加速肿瘤发生。实验证明,联合使用mTORC1抑制剂与针对METTL3的靶向药物能显著改善肝脏病变。该成果解释了为何TSC2突变患者通常临床症状更重,并为治疗耐药性患者提供了精准医学的新策略。References:Yue X, Zhang Y, Zhao N, et al. Uncomplexed-TSC1 deploys novel mTORC1-independent pathway to exacerbate the liver glycogen storage in TSC[J]. Cell Death & Disease, 2025, 16(1): 829.前往小宇宙评论区与主播互动

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1425-非依赖mTORC1的TSC1-GYS2轴调控TSC糖原累积研究

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