Mitochondrial Trafficking
Mitochondrial Trafficking - Related Videos
11:27
Analysis of SCAP N-glycosylation and Trafficking in Human Cells
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Cited by 17 •
2016
We describe a modified method for membrane fraction isolation from human cells and sample preparation for the detection of SCAP N-glycosylation and total protein by using western blot. We further introduce a GFP-labeling method to monitor SCAP trafficking using confocal microscopy. This protocol can be used in regular biology laboratories.
07:55
Imaging the Intracellular Trafficking of APP with Photoactivatable GFP
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Cited by 6 •
2015
While the transport of cell surface proteins is relatively easily studied, visualizing the trafficking of intracellular proteins is much more difficult. Here, we use constructs incorporating photoactivatable GFP and demonstrate a method to accurately follow the amyloid precursor protein from the Golgi apparatus to down-stream compartments and follow its clearance.
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...
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.
05:53
Mitochondrial Ca2+ Retention Capacity Assay and Ca2+-triggered Mitochondrial Swelling Assay
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Cited by 11 •
2018
This protocol aims to describe a method to examine the Ca2+ retention capacity and Ca2+- triggered mitochondrial swelling of isolated mitochondria of SH-SY5Y cells step-by-step.
FAQs
Kinesins and dynein provide motor-driven transport along microtubules, while Miro functions as an adaptor that connects mitochondria to the cytoskeletal transport machinery. This arrangement allows movement to be regulated rather than purely passive. Miro also helps couple transport to local calcium and energy conditions, so mitochondrial positioning can respond to the changing physiological needs of specific cellular regions.
Local calcium and energy conditions help determine where mitochondrial activity is most useful. Through adaptor-linked regulation involving Miro, transport can be coordinated with changing demands inside the cell. This connection is important because mitochondria contribute not only ATP production but also calcium signaling. Their redistribution therefore supports both metabolic requirements and signaling events during cellular remodeling.
Positioning mitochondria near particular cellular domains can concentrate ATP production and calcium-related signaling where those functions are needed. During polarization or growth, such localized support helps cells organize distinct regions rather than distributing resources uniformly. This principle is especially relevant to migrating cells and developing neurons, whose changing extensions and leading regions require coordinated energy and signaling capacity.
Mitochondrial trafficking is particularly relevant to cell migration, neuronal growth, polarization, and differentiation. Each process changes the location and activity of cellular domains, creating localized demands for ATP and calcium regulation. Examining transport in these contexts helps developmental biologists connect organelle positioning with how cells move, establish specialized shapes, extend neuronal processes, or acquire differentiated identities.
Researchers can examine how motor proteins, Miro-linked transport, and microtubule-associated movement correspond to changes in cell location, polarity, growth, or differentiation. They should also consider local calcium and energy conditions because these factors help coordinate transport with cellular demand. This approach links the trafficking machinery to observable developmental outcomes rather than treating mitochondrial position as an isolated feature.
Transport defects can be interpreted as failures to deliver mitochondrial energy production or signaling capacity to the cellular regions that require them. In developing tissues, that disruption may interfere with migration, polarization, neuronal growth, or differentiation. Studying these consequences connects molecular transport machinery with tissue-level development and can clarify how altered mitochondrial behavior contributes to developmental disorders and mitochondrial disease.