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Background <p>Apoptosis undergoes dynamic changes during tumor progression and treatment and has complex effects on tumor development. Apoptotic cell-derived extracellular vesicles (Apo-EVs) have recently been recognized as key mediators of intercellular communication, but their role in hepatocellular carcinoma (HCC) remains unclear.</p> Methods <p>We performed a series of in vitro and in vivo experiments to investigate the effects of tumor-derived Apo-EVs on HCC cell proliferation, apoptosis, and metabolic remodeling. Additional mechanistic studies were conducted to identify the functional cargo molecules carried by Apo-EVs and to determine their roles in ATP synthesis and metabolic regulation.</p> Results <p>Tumor-derived Apo-EVs suppressed HCC cell proliferation and increased apoptosis. Mechanistically, Apo-EVs promoted apoptotic cell death by shifting cellular metabolism from aerobic glycolysis to oxidative phosphorylation. Notably, transmembrane protein 70 (TMEM70), which is transported by Apo-EVs, was identified as a key mediator of this process. TMEM70 participated in ATP synthesis and contributed to metabolic reprogramming in HCC cells.</p> Conclusions <p>Our study reveals a potential mechanism by which tumor-derived Apo-EVs promote apoptosis and metabolic remodeling in HCC. Apo-EV-associated TMEM70 may contribute to this process through its involvement in mitochondrial metabolism. These findings suggest that Apo-EVs and selected cargo molecules may represent promising therapeutic targets for HCC.</p> Graphical Abstract <p></p>

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Tumor-derived apoptotic extracellular vesicles impede hepatocarcinoma progression by disrupting mitochondrial metabolism

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月8日

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  • Yi Chen,
  • Xihui Wang,
  • Tianjie Yuan,
  • Chenchen Ma,
  • KangJie Xie,
  • Feixiang Wu,
  • Weifeng Yu

摘要

Background

Apoptosis undergoes dynamic changes during tumor progression and treatment and has complex effects on tumor development. Apoptotic cell-derived extracellular vesicles (Apo-EVs) have recently been recognized as key mediators of intercellular communication, but their role in hepatocellular carcinoma (HCC) remains unclear.

Methods

We performed a series of in vitro and in vivo experiments to investigate the effects of tumor-derived Apo-EVs on HCC cell proliferation, apoptosis, and metabolic remodeling. Additional mechanistic studies were conducted to identify the functional cargo molecules carried by Apo-EVs and to determine their roles in ATP synthesis and metabolic regulation.

Results

Tumor-derived Apo-EVs suppressed HCC cell proliferation and increased apoptosis. Mechanistically, Apo-EVs promoted apoptotic cell death by shifting cellular metabolism from aerobic glycolysis to oxidative phosphorylation. Notably, transmembrane protein 70 (TMEM70), which is transported by Apo-EVs, was identified as a key mediator of this process. TMEM70 participated in ATP synthesis and contributed to metabolic reprogramming in HCC cells.

Conclusions

Our study reveals a potential mechanism by which tumor-derived Apo-EVs promote apoptosis and metabolic remodeling in HCC. Apo-EV-associated TMEM70 may contribute to this process through its involvement in mitochondrial metabolism. These findings suggest that Apo-EVs and selected cargo molecules may represent promising therapeutic targets for HCC.

Graphical Abstract