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Dissecting Innate Immune Signaling in Viral Evasion of Cytokine Production
Published on: March 2, 2014
Macrophage makeover extreme viral edition: mechanisms of immune subversion and therapeutic perspectives
Zoé Fremont-Debaene1, Suzanne Faure-Dupuy1
1Institut Cochin, INSERM, CNRS, Université Paris Cité, F-75014 Paris, France.
Abstract:
Macrophages are versatile innate immune cells that play a crucial role in immune responses and tissue repair. However, their plasticity and central role in immunity also make them prime targets for viral manipulation. Viruses have evolved sophisticated mechanisms to modulate macrophage functions, disrupting cytokine secretion and phagocytosis to evade immune clearance, establish infection and promote persistence. For instance, some viruses drive excessive cytokine secretion, resulting in hyperinflammation and tissue damage, while other viruses suppress cytokine production and impair phagocytic activity to evade detection. These disruptions often result in systemic immunopathology, chronic inflammation or the establishment of viral reservoirs. Emerging therapeutic strategies aiming to restore macrophage functionality through direct-acting antivirals or macrophage-specific interventions represent a growing interest. These novel approaches offer promising perspectives for combating viral-induced macrophage dysfunction. By summarizing the interplay between viruses and macrophages, this review highlights critical pathways of immune modulation and underscores innovative therapeutic strategies to restore immune balance, offering hope for combating viral infections and their associated pathologies.
Insights
Viruses manipulate macrophages, key immune cells, by altering cytokine secretion and phagocytosis. This review explores viral strategies and new therapies to restore macrophage function and combat viral diseases.
Area of Science:
- Immunology
- Virology
- Cell Biology
Background:
- Macrophages are crucial innate immune cells involved in immune responses and tissue repair.
- Their plasticity makes them susceptible to viral manipulation, impacting immune evasion and infection establishment.
- Viruses exploit macrophages to disrupt immune homeostasis, leading to pathology or persistent infections.
Purpose of the Study:
- To summarize the complex interplay between viruses and macrophages.
- To highlight viral mechanisms for modulating macrophage functions.
- To review emerging therapeutic strategies for restoring macrophage functionality.
Main Methods:
- Literature review of viral-macrophage interactions.
- Analysis of viral strategies targeting cytokine secretion and phagocytosis.
- Synthesis of current and emerging therapeutic interventions.
Main Results:
- Viruses disrupt macrophage cytokine secretion, causing hyperinflammation or suppression.
- Viral manipulation impairs macrophage phagocytic activity, aiding immune evasion.
- Disrupted macrophage function contributes to immunopathology, chronic inflammation, and viral reservoirs.
Conclusions:
- Understanding viral manipulation of macrophages is critical for developing effective treatments.
- Therapeutic strategies targeting macrophage restoration show promise for combating viral infections.
- Restoring macrophage immune balance offers new hope for managing viral diseases and associated pathologies.
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