The contribution of pattern recognition receptor signalling in the development of age related macular degeneration: the role of toll-like-receptors and the NLRP3-inflammasome

Abstract Age-related macular degeneration (AMD) is a leading cause of irreversible vision loss, characterised by the dysfunction and death of the photoreceptors and retinal pigment epithelium (RPE). Innate immune cell activation and accompanying para-inflammation have been suggested to contribute to...

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Main Authors: Alice Brandli, Kirstan A. Vessey, Erica L. Fletcher
Format: Article
Language:English
Published: BMC 2024-03-01
Series:Journal of Neuroinflammation
Subjects:
Online Access:https://doi.org/10.1186/s12974-024-03055-1
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author Alice Brandli
Kirstan A. Vessey
Erica L. Fletcher
author_facet Alice Brandli
Kirstan A. Vessey
Erica L. Fletcher
author_sort Alice Brandli
collection DOAJ
description Abstract Age-related macular degeneration (AMD) is a leading cause of irreversible vision loss, characterised by the dysfunction and death of the photoreceptors and retinal pigment epithelium (RPE). Innate immune cell activation and accompanying para-inflammation have been suggested to contribute to the pathogenesis of AMD, although the exact mechanism(s) and signalling pathways remain elusive. Pattern recognition receptors (PRRs) are essential activators of the innate immune system and drivers of para-inflammation. Of these PRRs, the two most prominent are (1) Toll-like receptors (TLR) and (2) NOD-, LRR- and pyrin domain-containing protein 3 (NLRP3)-inflammasome have been found to modulate the progression of AMD. Mutations in TLR2 have been found to be associated with an increased risk of developing AMD. In animal models of AMD, inhibition of TLR and NLRP3 has been shown to reduce RPE cell death, inflammation and angiogenesis signalling, offering potential novel treatments for advanced AMD. Here, we examine the evidence for PRRs, TLRs2/3/4, and NLRP3-inflammasome pathways in macular degeneration pathogenesis.
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spelling doaj.art-d413f7a802f14a9ba28097a5708dbb742024-03-05T19:49:00ZengBMCJournal of Neuroinflammation1742-20942024-03-0121111810.1186/s12974-024-03055-1The contribution of pattern recognition receptor signalling in the development of age related macular degeneration: the role of toll-like-receptors and the NLRP3-inflammasomeAlice Brandli0Kirstan A. Vessey1Erica L. Fletcher2Department of Anatomy and Physiology, The University of MelbourneDepartment of Anatomy and Physiology, The University of MelbourneDepartment of Anatomy and Physiology, The University of MelbourneAbstract Age-related macular degeneration (AMD) is a leading cause of irreversible vision loss, characterised by the dysfunction and death of the photoreceptors and retinal pigment epithelium (RPE). Innate immune cell activation and accompanying para-inflammation have been suggested to contribute to the pathogenesis of AMD, although the exact mechanism(s) and signalling pathways remain elusive. Pattern recognition receptors (PRRs) are essential activators of the innate immune system and drivers of para-inflammation. Of these PRRs, the two most prominent are (1) Toll-like receptors (TLR) and (2) NOD-, LRR- and pyrin domain-containing protein 3 (NLRP3)-inflammasome have been found to modulate the progression of AMD. Mutations in TLR2 have been found to be associated with an increased risk of developing AMD. In animal models of AMD, inhibition of TLR and NLRP3 has been shown to reduce RPE cell death, inflammation and angiogenesis signalling, offering potential novel treatments for advanced AMD. Here, we examine the evidence for PRRs, TLRs2/3/4, and NLRP3-inflammasome pathways in macular degeneration pathogenesis.https://doi.org/10.1186/s12974-024-03055-1MicrogliaRetinal degenerationPattern recognition receptorAge related macular degenerationInnate immunityToll-like receptors
spellingShingle Alice Brandli
Kirstan A. Vessey
Erica L. Fletcher
The contribution of pattern recognition receptor signalling in the development of age related macular degeneration: the role of toll-like-receptors and the NLRP3-inflammasome
Journal of Neuroinflammation
Microglia
Retinal degeneration
Pattern recognition receptor
Age related macular degeneration
Innate immunity
Toll-like receptors
title The contribution of pattern recognition receptor signalling in the development of age related macular degeneration: the role of toll-like-receptors and the NLRP3-inflammasome
title_full The contribution of pattern recognition receptor signalling in the development of age related macular degeneration: the role of toll-like-receptors and the NLRP3-inflammasome
title_fullStr The contribution of pattern recognition receptor signalling in the development of age related macular degeneration: the role of toll-like-receptors and the NLRP3-inflammasome
title_full_unstemmed The contribution of pattern recognition receptor signalling in the development of age related macular degeneration: the role of toll-like-receptors and the NLRP3-inflammasome
title_short The contribution of pattern recognition receptor signalling in the development of age related macular degeneration: the role of toll-like-receptors and the NLRP3-inflammasome
title_sort contribution of pattern recognition receptor signalling in the development of age related macular degeneration the role of toll like receptors and the nlrp3 inflammasome
topic Microglia
Retinal degeneration
Pattern recognition receptor
Age related macular degeneration
Innate immunity
Toll-like receptors
url https://doi.org/10.1186/s12974-024-03055-1
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