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Assessment of mitochondrial respiratory chain enzymatic activities on tissues and cultured cells

Assessment of mitochondrial respiratory chain enzymatic activities on tissues and cultured cells The assessment of mitochondrial respiratory chain (RC) enzymatic activities is essential for investigating mitochondrial function in several situations, including mitochondrial disorders, diabetes, cancer, aging and neurodegeneration, as well as for many toxicological assays. Muscle is the most commonly analyzed tissue because of its high metabolic rates and accessibility, although other tissues and cultured cell lines can be used. We describe a step-by-step protocol for a simple and reliable assessment of the RC enzymatic function (complexes I–IV) for minute quantities of muscle, cultured cells and isolated mitochondria from a variety of species and tissues, by using a single-wavelength spectrophotometer. An efficient tissue disruption and the choice for each assay of specific buffers, substrates, adjuvants and detergents in a narrow concentration range allow maximal sensitivity, specificity and linearity of the kinetics. This protocol can be completed in 3 h. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Protocols Springer Journals

Assessment of mitochondrial respiratory chain enzymatic activities on tissues and cultured cells

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References (37)

Publisher
Springer Journals
Copyright
Copyright © 2012 by Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved.
Subject
Life Sciences; Life Sciences, general; Biological Techniques; Analytical Chemistry; Microarrays; Computational Biology/Bioinformatics; Organic Chemistry
ISSN
1754-2189
eISSN
1750-2799
DOI
10.1038/nprot.2012.058
Publisher site
See Article on Publisher Site

Abstract

The assessment of mitochondrial respiratory chain (RC) enzymatic activities is essential for investigating mitochondrial function in several situations, including mitochondrial disorders, diabetes, cancer, aging and neurodegeneration, as well as for many toxicological assays. Muscle is the most commonly analyzed tissue because of its high metabolic rates and accessibility, although other tissues and cultured cell lines can be used. We describe a step-by-step protocol for a simple and reliable assessment of the RC enzymatic function (complexes I–IV) for minute quantities of muscle, cultured cells and isolated mitochondria from a variety of species and tissues, by using a single-wavelength spectrophotometer. An efficient tissue disruption and the choice for each assay of specific buffers, substrates, adjuvants and detergents in a narrow concentration range allow maximal sensitivity, specificity and linearity of the kinetics. This protocol can be completed in 3 h.

Journal

Nature ProtocolsSpringer Journals

Published: May 31, 2012

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