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Analyzing Mitochondrial Transport and Morphology in Human Induced Pluripotent Stem Cell-Derived Neurons in Hereditary Spastic Paraplegia
Published on: February 9, 2020
Miro (Mitochondrial Rho GTPase), a key player of mitochondrial axonal transport and mitochondrial dynamics in
Komal Panchal1, Anand Krishna Tiwari1
1Genetics & Developmental Biology Laboratory, Department of Biological Sciences & Biotechnology, Institute of Advanced Research (IAR), Koba, Gandhinagar, Gujarat 382426, India.
Abstract:
Miro (mitochondrial Rho GTPases) a mitochondrial outer membrane protein, plays a vital role in the microtubule-based mitochondrial axonal transport, mitochondrial dynamics (fusion and fission) and Mito-Ca2+ homeostasis. It forms a major protein complex with Milton (an adaptor protein), kinesin and dynein (motor proteins), and facilitates bidirectional mitochondrial axonal transport such as anterograde and retrograde transport. By forming this protein complex, Miro facilitates the mitochondrial axonal transport and fulfills the neuronal energy demand, maintain the mitochondrial homeostasis and neuronal survival. It has been demonstrated that altered mitochondrial biogenesis, improper mitochondrial axonal transport, and mitochondrial dynamics are the early pathologies associated with most of the neurodegenerative diseases (NDs). Being the sole mitochondrial outer membrane protein associated with mitochondrial axonal transport-related processes, Miro proteins can be one of the key players in various NDs such as Alzheimer's disease (AD), Parkinson's disease (PD), Amyotrophic lateral sclerosis (ALS) and Huntington's disease (HD). Thus, in the current review, we have discussed the evolutionarily conserved Miro proteins and its role in the pathogenesis of the various NDs. From this, we indicated that Miro proteins may act as a potential target for a novel therapeutic intervention for the treatment of various NDs.
Insights
Miro proteins are crucial for mitochondrial transport and neuronal health. Dysfunctional Miro is linked to neurodegenerative diseases, suggesting Miro as a potential therapeutic target.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Miro (mitochondrial Rho GTPases) is a mitochondrial outer membrane protein essential for mitochondrial transport, dynamics, and calcium homeostasis.
- Miro forms complexes with Milton, kinesin, and dynein to facilitate bidirectional axonal transport, crucial for neuronal energy supply and survival.
Purpose of the Study:
- To review the role of evolutionarily conserved Miro proteins in the pathogenesis of neurodegenerative diseases (NDs).
- To explore Miro proteins as potential therapeutic targets for NDs.
Main Methods:
- Literature review of studies on Miro proteins and neurodegenerative diseases.
- Analysis of Miro's function in mitochondrial axonal transport, dynamics, and homeostasis.
Main Results:
- Altered mitochondrial biogenesis, axonal transport, and dynamics are early indicators of neurodegenerative diseases.
- Miro proteins are implicated in the pathogenesis of Alzheimer's, Parkinson's, ALS, and Huntington's diseases.
Conclusions:
- Miro proteins are key players in neurodegenerative disease pathogenesis due to their role in mitochondrial transport and homeostasis.
- Targeting Miro proteins may offer a novel therapeutic strategy for treating various neurodegenerative diseases.
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