Measurement of mitochondrial turnover and life cycle using mitotimer

Kyle M. Trudeau, Roberta A. Gottlieb, Orian S. Shirihai

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

11 Scopus citations

Abstract

Current methodologies available to quantify changes in mitochondrial turnover are limited to pulse-chase assays or specific assays that quantify mitophagy. Accordingly, new tools that can assess mitochondrial turnover are needed for the study of cellular, subcellular, and spatial parameters of mitochondrial turnover and quality control. Recently, a group of studies described the use of the MitoTimer fluorescent probe to investigate various aspects of mitochondrial turnover, including changes to protein import, interorganelle protein sharing, and autophagy-mediated turnover. MitoTimer provides a fluorescent readout which directly relates to the mitochondrial turnover rate and allows quantification of relative changes to turnover. Importantly, MitoTimer can be used to investigate mitochondrial turnover on the subcellular level. Due to the fact that MitoTimer is a dual-emission probe and a number of factors can affect MitoTimer readout, certain considerations must be taken into account when using this tool both in experimental design and data interpretation. When used and interpreted appropriately, MitoTimer serves as a unique tool to understand pivotal aspects of mitochondrial turnover.

Original languageEnglish
Title of host publicationMethods in Enzymology
PublisherAcademic Press Inc.
Pages21-38
Number of pages18
EditionC
DOIs
StatePublished - 1 Jan 2014

Publication series

NameMethods in Enzymology
NumberC
Volume547
ISSN (Print)0076-6879
ISSN (Electronic)1557-7988

Keywords

  • Autophagy
  • Mitochondrial dynamics
  • Mitochondrial fusion
  • Mitochondrial trafficking
  • Mitochondrial turnover

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