PDK4驱动的代谢重编程增强了结肠直肠癌中介质细胞的入侵,以及腹转移
Lingyu Han1,2, Qinyuan Zhang1,2, Yuchen Wu1,2
1Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China.
Acta biochimica et biophysica Sinica
|January 29, 2026
概括
酸盐脱酶激酶4 (PDK4) 驱动着结直肠癌的腹转移,通过促进中细胞的入侵. PDK4增强脂肪酸氧化和β-catenin乙化,这是瘤扩散的关键步骤.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 代谢过程中的代谢.
背景情况:
- 中皮细胞在结直肠癌腹转移 (CRC-PM) 中至关重要,支持瘤生长和入侵.
- 了解中细胞参与CRC-PM的分子机制对于开发向疗法至关重要.
研究的目的:
- 研究介质细胞对结直肠癌转移的分子机制.
- 为了确定关键的基因和途径,在腹膜转移期间涉及中细胞重编程.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 来自患有腹膜转移的CRC患者的中细胞.
- 在体外共同培养实验中,对中和结直肠癌细胞进行了实验.
- 对PDK4.4的基因淘汰和过度表达研究.
- 脂肪酸氧化 (FAO) 测定和代谢分析.
- 对β-catenin乙化进行西部斑点分析.
主要成果:
- 在转移期间经历中细胞到中细胞转换 (MMT) 的中细胞中,PDK4的表达显著上调.
- 与CRC细胞共同培养会增加PDK4的表达,增强中细胞的迁移和入侵.
- 通过增加脂肪酸氧化 (FAO) 和增强β-catenin乙化,PDK4促进中细胞的侵入.
结论:
- PDK4是结肠直肠癌周转移中介质细胞入侵的关键驱动因素.
- PDK4通过代谢重编程 (增加FAO) 和随后的β-catenin乙化来调节中细胞入侵.
- PDK4代表了抑制CRC-PM的潜在治疗标.
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