通过mTOR/Stat3信号通路调节铁亡,APOE可以抑制骨髓瘤
Xiangyang Cheng1, Chong Bian1, Yiming Zhang1
1Department of Orthopedics, Minhang Hospital, Fudan University, Minhang District, Shanghai, China.
Archives of medical science : AMS
|February 12, 2026
概括
脂蛋白E (APOE) 的过度表达通过促进铁和自来抑制骨髓瘤 (OS) 的生长. 这一发现为治疗这种侵袭性骨癌提供了有前途的治疗标.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 骨髓瘤 (OS) 是一种具有有限治疗策略的恶性骨瘤.
- 在OS病原体中,阿波利波蛋白E (APOE) 的特定作用尚不清楚.
- 研究新的治疗点对于改善OS治疗结果至关重要.
研究的目的:
- 为了阐明APOE过度表达对骨髓瘤进展的影响.
- 探索APOE影响OS细胞中铁和自的机制.
- 评估APOE作为骨髓瘤治疗点的潜力.
主要方法:
- 基因共同表达网络分析 (WGCNA) 和蛋白质与蛋白质相互作用 (PPI) 网络确定了APOE.
- 在OS细胞系中,APOE过度表达,其对细胞增殖,入侵,迁移和上皮-介质细胞过渡 (EMT) 的影响被评估.
- 使用qRT-PCR,西斑和流细胞计分析了自,铁,亡,活性氧物种 (ROS),细胞内铁含量和mTOR/Stat3信号通路.
- 一个老鼠异种移植模型被用于体内验证.
主要成果:
- 过度表达APOE显著抑制了OS细胞的增殖,入侵,迁移和EMT.
- APOE增强了自和促进了亡,由增加的LC3B和Beclin1表达和升高的ROS和Fe2+水平证明.
- 过度表达APOE抑制了mTOR和Stat3信号通路,改变了与ferroptosis相关的基因表达 (上调的TfR1,下调的FPN,GPX4,SLC7A11) 并减少了体内瘤生长.
- 自抑制部分逆转了APOE过度表达的影响.
结论:
- 通过诱导铁和自,APOE过度表达在骨髓瘤中具有抗瘤作用.
- mTOR/Stat3信号通路参与调解APOE对OS的影响.
- APOE代表了骨髓瘤治疗的潜在治疗标.
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