Mitochondrial Labeling
Mitochondrial Labeling - Related Videos
10:31
In Situ Labeling of Mitochondrial DNA Replication in Drosophila Adult Ovaries by EdU Staining
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Cited by 16 •
2016
Drosophila oogenesis continues to be exceptionally useful in the study of mitochondrial proliferation and inheritance. This manuscript describes a detailed protocol used to label the replicating mitochondrial DNA (mtDNA) in Drosophila adult ovaries with 5-ethynyl-2´-deoxyuridine (EdU), which facilitates uncovering mechanisms associated with mitochondrial inheritance that were previously debatable.
06:53
Visualization of Mitochondrial Respiratory Function using Cytochrome C Oxidase / Succinate Dehydrogenase (COX/SDH) Double-labeling Histochemistry
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Cited by 82 •
2011
The cytochrome c oxidase/sodium dehydrogenase (COX/SDH) double-labeling method allows for direct visualization of mitochondrial respiratory enzyme deficiencies in fresh-frozen tissue sections. This is a straightforward histochemical technique and is useful in investigating mitochondrial diseases, aging, and aging-related disorders.
02:59
Animal Mitochondrial Genetics
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2020
Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
09:45
Mitochondrial Isolation from Skeletal Muscle
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Cited by 48 •
2011
This protocol describes a procedure to study the respiration of mitochondria isolated from skeletal muscles. This method was adapted from Scorrano et al. (2007). The mitochondrial isolation procedure requires about 2 hours. The mitochondrial respiration can be completed in about 1 hour.
08:40
An Optimized Protocol to Analyze Glycolysis and Mitochondrial Respiration in Lymphocytes
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Cited by 38 •
2016
The study of metabolism is becoming increasingly relevant to immunological research. Here, we present an optimized method for measuring glycolysis and mitochondrial respiration in mouse splenocytes, and T and B lymphocytes.
FAQs
Membrane-potential-dependent dyes accumulate in mitochondria according to the organelle’s membrane potential, making that electrical property part of the labeling mechanism. This matters when interpreting fluorescence because the signal identifies mitochondria through a physiological feature rather than only through a structural component. Such labeling can support tracking of distribution and movement while retaining this mechanistic context.
Genetic labeling directs a fluorescent protein to mitochondria through a targeting sequence. The signal therefore localizes through a genetically specified instruction rather than through membrane-potential-dependent dye accumulation or chemical binding. With microscopy, this strategy can reveal mitochondrial structure and behavior over time, including changes in position or shape within neuronal compartments such as axons and dendrites.
Chemical markers can identify mitochondria by binding mitochondrial components, providing a mechanism distinct from membrane-potential-dependent accumulation. That distinction matters when researchers interpret labeled structures because fluorescence reflects the marker’s interaction with the organelle. Comparing these mechanisms helps align a labeling strategy with measurements of mitochondrial distribution, structural changes, or movement.
Microscopy converts mitochondrial labeling into a time-resolved record by capturing labeled organelles across successive observations. Researchers can then examine where mitochondria occur, whether they move, and how their structures change. In neuroscience, this workflow is especially relevant to transport along axons and dendrites, where position and dynamics relate to neuronal organization.
Quantifying mitochondrial number, morphology, and dynamics turns images into measurements that can be compared across cells or conditions. Number addresses abundance, morphology captures structural state, and dynamics describes behavior such as movement over time. Together, these outcomes help connect organelle changes with neuronal function rather than treating fluorescence as an endpoint alone.
In neuroscience, the technique helps investigate how mitochondria are positioned and transported in axons and dendrites, and how they relate to energy production at synapses. It also supports studies of changes associated with neuronal injury or disease. These observations can contribute to research on neurodegeneration and brain development by linking organelle behavior with neuronal function.