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Trends Cell Biol. 2017 Jun;27(6):453-463. doi: 10.1016/j.tcb.2017.02.004. Epub 2017 Mar 6.

Mitochondria and Epigenetics - Crosstalk in Homeostasis and Stress.

Author information

1
Laboratory for Integrative and Systems Physiology, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
2
Laboratory for Integrative and Systems Physiology, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland. Electronic address: admin.auwerx@epfl.ch.

Abstract

Through epigenetic mechanisms cells integrate environmental stimuli to fine-tune gene expression levels. Mitochondrial function is essential to provide the intermediate metabolites necessary to generate and modify epigenetic marks in the nucleus, which in turn can regulate the expression of mitochondrial proteins. In this review we summarize the function of mitochondria in the regulation of epigenetic mechanisms as a new aspect of mitonuclear communication. We focus in particular on the most common epigenetic modifications - histone acetylation and histone and DNA methylation. We also discuss the emerging field of mitochondrial DNA (mtDNA) methylation, whose physiological role remains unknown. Finally, we describe the essential role of some histone modifications in regulating the mitochondrial unfolded protein response (UPRmt) and the mitochondrial stress-dependent lifespan extension.

PMID:
28274652
DOI:
10.1016/j.tcb.2017.02.004
[Indexed for MEDLINE]

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