Chapter title |
Isolating Mitochondria, Mitoplasts, and mtDNA from Cultured Mammalian Cells.
|
---|---|
Chapter number | 2 |
Book title |
Mitochondrial DNA
|
Published in |
Methods in molecular biology, January 2023
|
DOI | 10.1007/978-1-0716-2922-2_2 |
Pubmed ID | |
Book ISBNs |
978-1-07-162921-5, 978-1-07-162922-2
|
Authors |
Menger, Katja E, Nicholls, Thomas J, Menger, Katja E., Nicholls, Thomas J. |
Abstract |
Mitochondria are double membrane-bound eukaryotic organelles with roles in a range of cellular activities including energy conversion, apoptosis, cell signalling, and the biosynthesis of enzyme cofactors. Mitochondria contain their own genome, called mtDNA, which encodes subunits of the oxidative phosphorylation machinery as well as the rRNA and tRNA molecules required for their translation within mitochondria. The ability to isolate highly purified mitochondria from cells has been instrumental in a number of studies of mitochondrial function. Differential centrifugation is a long-established method for the isolation of mitochondria. Cells are subjected to osmotic swelling and disruption, followed by centrifugation in isotonic sucrose solutions to separate mitochondria from other cellular components. We present a method using this principle for the isolation of mitochondria from cultured mammalian cell lines. Mitochondria purified by this method can be further fractionated to investigate protein localization, or act as a starting point to purify mtDNA. |
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