ArticleMethods in molecular biology (Clifton, N.J.)2023
Visualization of mtDNA Using FISH.
Article in Methods in molecular biology (Clifton, N.J.), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Proper mitochondrial DNA (mtDNA) levels are critical for many cellular biological functions and are associated with aging and many mitochondria disorders. Defects in core subunits of the mtDNA replication machinery lead to decreased mtDNA levels. Other indirect mitochondrial contexts including ATP concentration, lipid composition, and nucleotide composition also contribute to mtDNA maintenance. Furthermore, mtDNA molecules are distributed evenly throughout the mitochondrial network. This uniform distribution pattern is required for oxidative phosphorylation and ATP production and has been linked to many diseases when perturbed. Thus, it is important to visualize mtDNA in the cellular context. Here we provide detailed protocols for cellular visualization of mtDNA using fluorescence in situ hybridization (FISH). The fluorescent signals are targeted to the mtDNA sequence directly, ensuring both sensitivity and specificity. This mtDNA FISH method can be combined with immunostaining and used for visualizing mtDNA-protein interactions and dynamics.
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