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© Research
Publication : Methods in molecular biology (Clifton, N.J.)

mTRIP: an imaging tool to investigate mitochondrial DNA dynamics in physiology and disease at the single-cell resolution

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Methods in molecular biology (Clifton, N.J.) - 01 Jan 2015

Chatre L, Ricchetti M

Link to Pubmed [PMID] – 25631010

Methods Mol. Biol. 2015;1264:133-47

Mitochondrial physiology and metabolism are closely linked to replication and transcription of the genome of the organelle, the mitochondrial DNA (mtDNA). However, the characterization of mtDNA processing is poorly defined at the single-cell level. Here, we describe mTRIP (mitochondrial transcription and replication imaging protocol), an imaging approach based on modified fluorescence in situ hybridization (FISH), which simultaneously reveals mitochondrial structures engaged in mtDNA initiation of replication and global mitochondrial RNA (mtRNA) content at the single-cell level in human cells. In addition, mTRIP can be coupled to immunofluorescence for in situ protein tracking, or to MitoTracker, thereby allowing simultaneous labelling of mtDNA, mtRNA, and proteins or mitochondria, respectively. Altogether, qualitative and quantitative alterations of the dynamics of mtDNA processing are detected by mTRIP in human cells undergoing physiological changes, as well as stress and dysfunction, with a potential for diagnostic of mitochondrial diseases.

http://www.ncbi.nlm.nih.gov/pubmed/25631010