1409-E2F6调控胶质母细胞瘤替莫唑胺耐药与免疫抑制机制 episode artwork

EPISODE · Aug 9, 2026 · 23 MIN

1409-E2F6调控胶质母细胞瘤替莫唑胺耐药与免疫抑制机制

from 聊聊Sci

这份研究报告揭示了E2F6转录因子在胶质母细胞瘤中导致替莫唑胺(TMZ)化疗耐药的新型生物学机制。研究指出,E2F6在胶质瘤组织中高度表达,并通过直接抑制下游靶点SH3GL2的转录,阻碍了细胞内HMGB1蛋白的外排分泌。当这一路径被激活时,受抑制的SH3GL2无法协同转运蛋白将HMGB1运出胞外,导致胞内保留的HMGB1持续修复药物诱导的DNA损伤,从而产生耐药性。此外,胞外HMGB1的减少削弱了肿瘤相关巨噬细胞向促炎性M1型的极化,导致肿瘤微环境呈现免疫抑制状态。实验证明,靶向干扰E2F6/SH3GL2/HMGB1轴不仅能增强胶质瘤细胞对化疗的敏感性,还能重塑抗肿瘤免疫反应。综上所述,该路径是克服胶质瘤耐药并提升免疫治疗疗效的潜在科研与临床靶点。References:Gong C, Chen M, Zeng Y, et al. E2F6 mediates temozolomide resistance and immunosuppression in glioblastoma by repressing SH3GL2-dependent HMGB1 secretion[J]. Cell Death & Disease, 2026.前往小宇宙评论区与主播互动

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1409-E2F6调控胶质母细胞瘤替莫唑胺耐药与免疫抑制机制

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