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Mitochondrial Oxidative Phosphorylation in Viral Infections
Neeraja Purandare1, Esha Ghosalkar1, Lawrence I Grossman1
1Center for Molecular Medicine and Genetics, School of Medicine, Wayne State University, Detroit, MI 48201, USA.
Abstract:
Mitochondria have been identified as the "powerhouse" of the cell, generating the cellular energy, ATP, for almost seven decades. Research over time has uncovered a multifaceted role of the mitochondrion in processes such as cellular stress signaling, generating precursor molecules, immune response, and apoptosis to name a few. Dysfunctional mitochondria resulting from a departure in homeostasis results in cellular degeneration. Viruses hijack host cell machinery to facilitate their own replication in the absence of a bonafide replication machinery. Replication being an energy intensive process necessitates regulation of the host cell oxidative phosphorylation occurring at the electron transport chain in the mitochondria to generate energy. Mitochondria, therefore, can be an attractive therapeutic target by limiting energy for viral replication. In this review we focus on the physiology of oxidative phosphorylation and on the limited studies highlighting the regulatory effects viruses induce on the electron transport chain.
Insights
Viruses exploit host cell mitochondria for energy, disrupting cellular homeostasis. Targeting mitochondrial oxidative phosphorylation offers a potential antiviral strategy by limiting viral replication energy.
Area of Science:
- Cellular biology
- Virology
- Mitochondrial physiology
Background:
- Mitochondria are crucial for cellular energy (ATP) production via oxidative phosphorylation.
- Mitochondria also play roles in stress signaling, immune response, and apoptosis.
- Mitochondrial dysfunction leads to cellular degeneration.
Purpose of the Study:
- To review the physiology of oxidative phosphorylation.
- To explore how viruses regulate host cell mitochondria for replication.
- To highlight the electron transport chain as a therapeutic target against viral infections.
Main Methods:
- Literature review of studies on mitochondrial physiology.
- Analysis of research on viral interactions with host cell oxidative phosphorylation.
- Examination of the electron transport chain's role in viral replication.
Main Results:
- Viruses require significant energy for replication, necessitating modulation of host mitochondrial ATP production.
- Viruses can manipulate the host cell's electron transport chain to meet energy demands.
- Limited studies exist on the specific regulatory effects viruses exert on the electron transport chain.
Conclusions:
- Mitochondria are essential for viral replication due to their energy-generating capacity.
- Targeting mitochondrial oxidative phosphorylation presents a promising avenue for antiviral therapies.
- Further research is needed to fully understand viral regulation of the electron transport chain.
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