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Biochem J. 2016 Oct 15;473(20):3421-3449.

Mitochondrial form, function and signalling in aging.

Author information

1
Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.
2
Departamento de Bioquímica, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil.

Abstract

Aging is often accompanied by a decline in mitochondrial mass and function in different tissues. Additionally, cell resistance to stress is frequently found to be prevented by higher mitochondrial respiratory capacity. These correlations strongly suggest mitochondria are key players in aging and senescence, acting by regulating energy homeostasis, redox balance and signalling pathways central in these processes. However, mitochondria display a wide array of functions and signalling properties, and the roles of these different characteristics are still widely unexplored. Furthermore, differences in mitochondrial properties and responses between tissues and cell types, and how these affect whole body metabolism are also still poorly understood. This review uncovers aspects of mitochondrial biology that have an impact upon aging in model organisms and selected mammalian cells and tissues.

PMID:
27729586
DOI:
10.1042/BCJ20160451
[Indexed for MEDLINE]

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