TLRs in COVID-19: How they drive immunopathology and the rationale for modulation

COVID-19 is both a viral illness and a disease of immunopathology. Proximal events within the innate immune system drive the balance between deleterious inflammation and viral clearance. We hypothesize that a divergence between the generation of excessive inflammation through over activation of the...

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Main Authors: F. Linzee Mabrey, Eric D Morrell, Mark M Wurfel
Format: Article
Language:English
Published: SAGE Publishing 2021-10-01
Series:Innate Immunity
Online Access:https://doi.org/10.1177/17534259211051364
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author F. Linzee Mabrey
Eric D Morrell
Mark M Wurfel
author_facet F. Linzee Mabrey
Eric D Morrell
Mark M Wurfel
author_sort F. Linzee Mabrey
collection DOAJ
description COVID-19 is both a viral illness and a disease of immunopathology. Proximal events within the innate immune system drive the balance between deleterious inflammation and viral clearance. We hypothesize that a divergence between the generation of excessive inflammation through over activation of the TLR associated myeloid differentiation primary response (MyD88) pathway relative to the TIR-domain-containing adaptor-inducing IFN-β (TRIF) pathway plays a key role in COVID-19 severity. Both viral elements and damage associated host molecules act as TLR ligands in this process. In this review, we detail the mechanism for this imbalance in COVID-19 based on available evidence, and we discuss how modulation of critical elements may be important in reducing severity of disease.
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spelling doaj.art-974427168b5e4e37bfe9dcaa25899ffa2023-02-02T06:03:24ZengSAGE PublishingInnate Immunity1753-42591753-42672021-10-012710.1177/17534259211051364TLRs in COVID-19: How they drive immunopathology and the rationale for modulationF. Linzee MabreyEric D MorrellMark M WurfelCOVID-19 is both a viral illness and a disease of immunopathology. Proximal events within the innate immune system drive the balance between deleterious inflammation and viral clearance. We hypothesize that a divergence between the generation of excessive inflammation through over activation of the TLR associated myeloid differentiation primary response (MyD88) pathway relative to the TIR-domain-containing adaptor-inducing IFN-β (TRIF) pathway plays a key role in COVID-19 severity. Both viral elements and damage associated host molecules act as TLR ligands in this process. In this review, we detail the mechanism for this imbalance in COVID-19 based on available evidence, and we discuss how modulation of critical elements may be important in reducing severity of disease.https://doi.org/10.1177/17534259211051364
spellingShingle F. Linzee Mabrey
Eric D Morrell
Mark M Wurfel
TLRs in COVID-19: How they drive immunopathology and the rationale for modulation
Innate Immunity
title TLRs in COVID-19: How they drive immunopathology and the rationale for modulation
title_full TLRs in COVID-19: How they drive immunopathology and the rationale for modulation
title_fullStr TLRs in COVID-19: How they drive immunopathology and the rationale for modulation
title_full_unstemmed TLRs in COVID-19: How they drive immunopathology and the rationale for modulation
title_short TLRs in COVID-19: How they drive immunopathology and the rationale for modulation
title_sort tlrs in covid 19 how they drive immunopathology and the rationale for modulation
url https://doi.org/10.1177/17534259211051364
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