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Published on: May 4, 2013
Mechanisms of MAVS regulation at the mitochondrial membrane
Jana L Jacobs1, Carolyn B Coyne
1Department of Infectious Diseases and Microbiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA 15219, USA.
Abstract:
Mitochondria have emerged as critical platforms for antiviral innate immune signaling. This is due in large part to the mitochondrial localization of the innate immune signaling adaptor MAVS (mitochondrial antiviral signaling protein), which coordinates signals received from two independent cytosolic pathogen recognition receptors (PRRs) to induce antiviral genes. The existence of a shared adaptor for two central PRRs presents an ideal target by which the host cell can prevent cellular damage induced by uncontrolled inflammation through alteration of MAVS expression and/or signaling. In this review, we focus on the MAVS regulome and review the cellular factors that regulate MAVS by (1) protein-protein interactions, (2) alterations in mitochondrial dynamics, and/or (3) post-translational modifications.
Insights
Mitochondria are key to antiviral immunity, housing the MAVS protein that activates immune genes. This review explores how cells regulate MAVS to control inflammation and prevent damage.
Area of Science:
- Mitochondrial biology
- Innate immunity
- Virology
Background:
- Mitochondria are central to innate immune signaling against viruses.
- The mitochondrial antiviral signaling protein (MAVS) is a key adaptor coordinating signals from pathogen recognition receptors (PRRs).
- MAVS regulates the induction of antiviral genes.
Purpose of the Study:
- To review the MAVS regulome.
- To explore cellular factors that regulate MAVS.
- To understand how MAVS controls inflammation and prevents cellular damage.
Main Methods:
- Literature review focusing on MAVS regulation.
- Analysis of protein-protein interactions affecting MAVS.
- Examination of mitochondrial dynamics' role in MAVS signaling.
- Review of post-translational modifications impacting MAVS.
Main Results:
- MAVS integrates signals from cytosolic PRRs on the mitochondria.
- Regulation of MAVS expression and signaling is crucial for controlling inflammation.
- Cellular factors modulate MAVS through protein interactions, mitochondrial dynamics, and PTMs.
Conclusions:
- MAVS is a critical regulator of the antiviral innate immune response.
- Understanding MAVS regulation is key to controlling inflammatory diseases.
- Targeting MAVS pathways offers therapeutic potential for viral infections.
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