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Updated: Jun 24, 2026
07:49
Transmitochondrial Cybrid Generation Using Cancer Cell Lines
Published on: March 17, 2023
Mitochondrial DNA instability and metabolic shift in human cancers
1Institute of Pharmacology, National Yang-Ming University, Taipei, 112, Taiwan.
International Journal of Molecular Sciences
|April 1, 2009
Summary
Cancer cells exhibit altered glucose metabolism, shifting from oxidative phosphorylation to glycolysis. This study reviews mitochondrial DNA alterations in human cancers and their role in tumor development and spread.
Area of Science:
- Biochemistry
- Oncology
- Molecular Biology
Background:
- Tumor cells exhibit a metabolic shift from oxidative phosphorylation to glycolysis.
- Mitochondrial defects are implicated in cancer initiation and progression.
- Somatic mutations and depletion of mitochondrial DNA (mtDNA) are increasingly identified in human cancers.
Purpose of the Study:
- To review somatic mtDNA alterations and their clinicopathological correlations in human cancers.
- To explore the role of mtDNA alterations in tumorigenesis, cancer progression, and metastasis.
- To discuss signaling pathways driving the metabolic shift to glycolysis in cancer.
Main Methods:
- Literature review of studies on mtDNA alterations in human cancers.
- Analysis of clinicopathological correlations of somatic mtDNA mutations.
- Discussion of oncogene/tumor suppressor gene effects on metabolic enzymes and mitochondrial biogenesis.
Main Results:
- A wide spectrum of mtDNA mutations and depletion is observed in human cancers.
- Activation of oncogenes or p53 mutations can upregulate glycolytic enzymes or inhibit respiratory complexes.
- These alterations contribute to elevated glucose uptake and mitochondrial dysfunction in cancer cells.
Conclusions:
- Somatic mtDNA alterations are significant in human cancers, correlating with clinicopathological features.
- These alterations play a role in cancer initiation, progression, and metastasis.
- Understanding these metabolic shifts and signaling pathways is crucial for cancer research.
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