Mitophagy: A double-edged sword in tumor cell death regulation and therapeutic response

Tong Chu1, Zifeng Huang1, Wenzhe Ma1

  • 1State Key Laboratory of Quality Research in Chinese Medicine & Faculty of Chinese Medicine, Macau University of Science and Technology, Macau SAR, 999078, China; Zhuhai MUST Science and Technology Research Institute, Macau University of Science and Technology, Hengqin Guangdong-Macao In-Depth Cooperation Zone, Guangdong, 519099, China.

Insights

Mitophagy, the process of clearing damaged mitochondria, has complex roles in cancer. Understanding its mechanisms is key to developing new cancer therapies.

Area of Science:

  • Cellular Biology
  • Oncology
  • Molecular Mechanisms

Background:

  • Mitophagy is crucial for cellular homeostasis, involving the selective removal of damaged mitochondria.
  • It plays a dual role in cancer, influencing both tumor development and response to therapy.

Purpose of the Study:

  • To systematically review the molecular mechanisms of mitophagy (ubiquitin-dependent and -independent pathways).
  • To explore the crosstalk between mitophagy and various tumor cell death modalities.
  • To discuss the context-dependent roles of mitophagy in cancer and therapeutic strategies.

Main Methods:

  • Systematic review of scientific literature.
  • Analysis of molecular pathways involved in mitophagy.
  • Exploration of the interplay between mitophagy and cell death processes (apoptosis, ferroptosis, necroptosis, ICD, pyroptosis).

Main Results:

  • Mitophagy regulates mitochondrial quality, impacting cancer cell death pathways.
  • Its role in tumors is context-dependent: moderate activation can suppress growth, while excessive activation may lead to cell death or enhance chemotherapy.
  • Challenges exist in targeting mitophagy for cancer therapy.

Conclusions:

  • Mitophagy's intricate relationship with cancer cell death offers therapeutic potential.
  • Spatiotemporal regulation and combination therapies targeting mitophagy are promising for precision oncology.
  • Further research is needed to fully harness mitophagy for cancer treatment.

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