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In Vitro and In Vivo Detection of Mitophagy in Human Cells, C. Elegans, and Mice
Published on: November 22, 2017
Targeting cellular mitophagy as a strategy for human cancers
1School of Stomatology, China Medical University, Shenyang, China.
Abstract:
Mitophagy is the cellular process to selectively eliminate dysfunctional mitochondria, governing the number and quality of mitochondria. Dysregulation of mitophagy may lead to the accumulation of damaged mitochondria, which plays an important role in the initiation and development of tumors. Mitophagy includes ubiquitin-dependent pathways mediated by PINK1/Parkin and non-ubiquitin dependent pathways mediated by mitochondrial autophagic receptors including NIX, BNIP3, and FUNDC1. Cellular mitophagy widely participates in multiple cellular process including metabolic reprogramming, anti-tumor immunity, ferroptosis, as well as the interaction between tumor cells and tumor-microenvironment. And cellular mitophagy also regulates tumor proliferation and metastasis, stemness, chemoresistance, resistance to targeted therapy and radiotherapy. In this review, we summarized the underlying molecular mechanisms of mitophagy and discussed the complex role of mitophagy in diverse contexts of tumors, indicating it as a promising target in the mitophagy-related anti-tumor therapy.
Insights
Mitophagy, the process of clearing damaged mitochondria, is crucial for preventing tumor initiation and development. Understanding mitophagy mechanisms offers new avenues for anti-tumor therapies.
Area of Science:
- Cellular Biology
- Cancer Research
- Mitochondrial Dynamics
Background:
- Mitophagy selectively removes dysfunctional mitochondria, maintaining cellular health.
- Dysregulated mitophagy contributes to tumor initiation and progression.
- Mitophagy involves both ubiquitin-dependent (PINK1/Parkin) and independent pathways.
Purpose of the Study:
- To review the molecular mechanisms of mitophagy.
- To discuss the multifaceted role of mitophagy in various cancer contexts.
- To highlight mitophagy as a potential anti-tumor therapeutic target.
Main Methods:
- Literature review of mitophagy pathways.
- Analysis of mitophagy's involvement in cellular processes relevant to cancer.
- Synthesis of current understanding of mitophagy in tumor biology.
Main Results:
- Mitophagy regulates key cellular processes including metabolism, immunity, ferroptosis, and tumor-microenvironment interactions.
- Mitophagy influences tumor proliferation, metastasis, stemness, and resistance to therapies.
- Both ubiquitin-dependent and independent mitophagy pathways are implicated in cancer.
Conclusions:
- Mitophagy plays a complex, context-dependent role in tumorigenesis.
- Targeting mitophagy presents a promising strategy for novel anti-tumor therapies.
- Further research into mitophagy mechanisms can unlock new therapeutic potentials.
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