Mitochondrial Diseases Part I: mouse models of OXPHOS deficiencies caused by defects in respiratory complex subunits
Alessandra Torraco1, Susana Peralta2, Luisa Iommarini3
1Unit for Neuromuscular and Neurodegenerative Disorders, Laboratory of Molecular Medicine, Bambino Gesù Children's Hospital, IRCCS, Viale di San Paolo, 15-00146 Rome, Italy.
Abstract:
Mitochondrial disorders are the most common inborn errors of metabolism affecting the oxidative phosphorylation system (OXPHOS). Because of the poor knowledge of the pathogenic mechanisms, a cure for these disorders is still unavailable and all the treatments currently in use are supportive more than curative. Therefore, in the past decade a great variety of mouse models have been developed to assess the in vivo function of several mitochondrial proteins involved in human diseases. Due to the genetic and physiological similarity to humans, mice represent reliable models to study the pathogenic mechanisms of mitochondrial disorders and are precious to test new therapeutic approaches. Here we summarize the features of several mouse models of mitochondrial diseases directly related to defects in subunits of the OXPHOS complexes or in assembly factors. We discuss how these models recapitulate many human conditions and how they have contributed to the understanding of mitochondrial function in health and disease.
Insights
Mouse models are crucial for understanding mitochondrial disorders, which affect the oxidative phosphorylation system (OXPHOS). These models help elucidate disease mechanisms and test new therapies for these complex metabolic conditions.
Area of Science:
- Biochemistry
- Genetics
- Metabolic Disorders
Background:
- Mitochondrial disorders are common inborn errors of metabolism affecting the oxidative phosphorylation system (OXPHOS).
- Current treatments are primarily supportive due to limited understanding of pathogenic mechanisms.
- Developing effective cures remains a significant challenge.
Purpose of the Study:
- To summarize features of mouse models for mitochondrial diseases.
- To highlight the utility of these models in studying OXPHOS defects.
- To discuss their contribution to understanding mitochondrial function and disease.
Main Methods:
- Development of various mouse models targeting OXPHOS complex subunits or assembly factors.
- In vivo assessment of mitochondrial protein function.
- Comparative analysis of human conditions and mouse model phenotypes.
Main Results:
- Mouse models recapitulate key aspects of human mitochondrial diseases.
- These models provide insights into inborn errors of metabolism affecting OXPHOS.
- They have advanced the understanding of mitochondrial function in health and disease.
Conclusions:
- Mouse models are invaluable tools for studying mitochondrial disorders.
- They facilitate research into pathogenic mechanisms and the testing of novel therapeutic strategies.
- Continued development and utilization of these models are essential for advancing the field.
More Related Videos
Related Concept Videos
The Supercomplexes in the Crista Membrane
The Electron Transport Chain
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
Electron Transport Chain: Complex III and IV
ATP Synthase: Mechanism
Electron Transport Chain: Complex I and II
ROS generation is regulated and maintained at moderate levels necessary...
Protein Import into the Peroxisomes
Peroxisomal Protein Import:
Peroxisomes lack the genetic machinery required to code for their own proteins. Hence, most peroxisomal membrane, lumenal and transmembrane proteins are synthesized in the cytoplasm or ER and transported to the peroxisome...


