Mitochondrial Motility
Mitochondrial Motility - Related Videos
08:15
Gastrointestinal Motility Monitor (GIMM)
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Cited by 36 •
2010
Evaluation of colonic motility in the guinea pig distal colon with the Gastrointestinal Motility Monitor (GIMM) is a straightforward and simple to learn approach to quantitatively evaluate propulsive motility in the gastrointestinal tract.
08:52
An Introduction to Cell Motility and Migration
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2023
Cell motility and migration play important roles in both normal biology and in disease. On one hand, migration allows cells to generate complex tissues and organs during development, but on the other hand, the same mechanisms are used by tumor cells to move and spread in a process known as cancer metastasis. One of the primary cellular machineries that make cell movement possible is an intracellular network of myosin and actin molecules, together known as “actomyosin”, which creates a...
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
Kinesin and dynein support movement in opposite directions along microtubules. Their coordinated activity enables anterograde and retrograde transport, allowing mitochondria to shift between cellular regions rather than remaining fixed in one location. Adaptor and tethering complexes connect the organelles to this transport machinery, while ATP use by the motors supplies the energy required for movement.
Adaptor and tethering complexes provide the connection between mitochondria and motor proteins such as kinesin and dynein. This linkage allows motor activity to influence organelle positioning and helps coordinate transport with the microtubule network. Without this coupling, motor proteins could not effectively direct mitochondrial movement toward regions where cellular energy or regulatory functions are needed.
Movement allows mitochondria to be repositioned as local metabolic requirements change. Transport can help place them near regions requiring ATP production, calcium regulation, or responses to cellular stress. This makes motility more than simple organelle displacement: it links mitochondrial location with changing cellular conditions and helps cells adjust function across different cytoplasmic regions.
A useful analysis considers the mitochondria, the microtubule tracks, ATP-dependent motor proteins, and the adaptor and tethering complexes that connect these parts. Directional behavior is also important, because anterograde and retrograde movement reflect transport in different directions. Examining these components together helps relate observed mitochondrial positioning to the underlying transport mechanism.
Neurons must distribute mitochondria through long axons and branching dendrites, where local cellular demands can vary substantially. Motility provides a mechanism for positioning these organelles throughout those extended structures. Studying transport in neurons therefore helps explain how mitochondrial distribution supports neuronal function and why impaired movement may be associated with neurodegenerative effects.
Investigating mitochondrial motility can connect defective organelle transport with broader cellular problems. The topic is relevant to neurodegeneration, metabolic disease, and impaired cellular function because disrupted positioning may interfere with local ATP production, calcium regulation, or stress responses. Tracking these relationships helps researchers interpret how transport abnormalities could contribute to disease-related changes.