What question did this study set out to answer?

To survey mitochondrial DNA (mtDNA) copy number alterations across diverse cancer types and assess their associations with somatic mutations, gene expression, and cellular metabolism.

February 21, 2016eLifeOpen Access

Mitochondrial DNA copy number variation across human cancers

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Authors

EREd ReznikBoston University MMMartin L. MillerAstraZeneca (United Kingdom)YŞYasin ŞenbabaoğluChan Zuckerberg Initiative (United States)

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Implication

Pan-cancer genomic analysis reveals widespread mitochondrial DNA depletion across multiple tumor types, highlighting metabolic adaptations and potential therapeutic opportunities.

Key Points

To survey mitochondrial DNA (mtDNA) copy number alterations across diverse cancer types and assess their associations with somatic mutations, gene expression, and cellular metabolism.
Analyzed mtDNA copy number variation across 22 tumor types using genomic data from The Cancer Genome Atlas (TCGA) compared with matched normal tissues.
Integrated nuclear somatic mutation profiles, transcriptomic signatures of respiratory, cell-cycle, and immune pathways, and immunohistochemical analyses of respiratory proteins.
Tumors exhibited widespread depletion of mtDNA copy number relative to matched normal tissues, particularly in bladder, breast, and kidney cancers.
Identified significant associations between mtDNA content and nuclear alterations, including IDH1 mutations in gliomas, as well as expression of respiratory and immune-related genes.
Observed compensatory cellular mechanisms in specific tumors that maintain respiratory protein levels despite substantial mtDNA depletion.

Cite This Study

Reznik et al. (2016) studied this question.

synapsesocial.com/papers/6a00a67cb124fe581985fb7c https://doi.org/10.7554/elife.10769

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Implication

Pan-cancer genomic analysis reveals widespread mitochondrial DNA depletion across multiple tumor types, highlighting metabolic adaptations and potential therapeutic opportunities.

Mitochondrial DNA copy number variation across human cancers

Discussion

Member takes

Implication

Key Points

Cite This Study

Mitochondrial DNA copy number variation across human cancers

Discussion

Member takes

Implication

Key Points

Cite This Study

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