Complementing the sugar code: role of GAGs and sialic acid in complement regulation

Sugar molecules play a vital role on both microbial and mammalian cells, where they are involved in cellular communication, govern microbial virulence and modulate host immunity and inflammatory responses. The complement cascade, as part of a host’s innate immune system, is a potent weapon against i...

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Main Authors: Alex eLangford-Smith, Anthony John Day, Paul Nicholas Bishop, Simon John Clark
Format: Article
Language:English
Published: Frontiers Media S.A. 2015-02-01
Series:Frontiers in Immunology
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fimmu.2015.00025/full
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author Alex eLangford-Smith
Anthony John Day
Paul Nicholas Bishop
Paul Nicholas Bishop
Paul Nicholas Bishop
Simon John Clark
Simon John Clark
author_facet Alex eLangford-Smith
Anthony John Day
Paul Nicholas Bishop
Paul Nicholas Bishop
Paul Nicholas Bishop
Simon John Clark
Simon John Clark
author_sort Alex eLangford-Smith
collection DOAJ
description Sugar molecules play a vital role on both microbial and mammalian cells, where they are involved in cellular communication, govern microbial virulence and modulate host immunity and inflammatory responses. The complement cascade, as part of a host’s innate immune system, is a potent weapon against invading bacteria but has to be tightly regulated to prevent inappropriate attack and damage to host tissues. A number of complement regulators, such as factor H and properdin, interact with sugar molecules, such as glycosaminoglycans and sialic acid, on host and pathogen membranes and direct the appropriate complement response by either promoting the binding of complement activators or inhibitors. The binding of these complement regulators to sugar molecules can vary from location to location, due to their different specificities and because distinct structural and functional subpopulations of sugars are found in different human organs, such as the brain, kidney and eye. This review will cover recent studies that have provided important new insights into the role of glycosaminoglycans and sialic acid in complement regulation and how sugar recognition may be compromised in disease
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spelling doaj.art-1e9cc700c89f46fcb3578dbb734dd99d2022-12-22T02:25:55ZengFrontiers Media S.A.Frontiers in Immunology1664-32242015-02-01610.3389/fimmu.2015.00025129222Complementing the sugar code: role of GAGs and sialic acid in complement regulationAlex eLangford-Smith0Anthony John Day1Paul Nicholas Bishop2Paul Nicholas Bishop3Paul Nicholas Bishop4Simon John Clark5Simon John Clark6University of ManchesterUniversity of ManchesterFaculty of Medicine and Human Sciences, University of ManchesterCentre for Advanced Discovery and Experimental TherapeuticsCentral Manchester University Hospitals NHS Foundation TrustFaculty of Medicine and Human Sciences, University of ManchesterCentre for Advanced Discovery and Experimental TherapeuticsSugar molecules play a vital role on both microbial and mammalian cells, where they are involved in cellular communication, govern microbial virulence and modulate host immunity and inflammatory responses. The complement cascade, as part of a host’s innate immune system, is a potent weapon against invading bacteria but has to be tightly regulated to prevent inappropriate attack and damage to host tissues. A number of complement regulators, such as factor H and properdin, interact with sugar molecules, such as glycosaminoglycans and sialic acid, on host and pathogen membranes and direct the appropriate complement response by either promoting the binding of complement activators or inhibitors. The binding of these complement regulators to sugar molecules can vary from location to location, due to their different specificities and because distinct structural and functional subpopulations of sugars are found in different human organs, such as the brain, kidney and eye. This review will cover recent studies that have provided important new insights into the role of glycosaminoglycans and sialic acid in complement regulation and how sugar recognition may be compromised in diseasehttp://journal.frontiersin.org/Journal/10.3389/fimmu.2015.00025/fullComplement Factor HProperdininnate immunityHeparan sulfatecomplement regulationsialic acid
spellingShingle Alex eLangford-Smith
Anthony John Day
Paul Nicholas Bishop
Paul Nicholas Bishop
Paul Nicholas Bishop
Simon John Clark
Simon John Clark
Complementing the sugar code: role of GAGs and sialic acid in complement regulation
Frontiers in Immunology
Complement Factor H
Properdin
innate immunity
Heparan sulfate
complement regulation
sialic acid
title Complementing the sugar code: role of GAGs and sialic acid in complement regulation
title_full Complementing the sugar code: role of GAGs and sialic acid in complement regulation
title_fullStr Complementing the sugar code: role of GAGs and sialic acid in complement regulation
title_full_unstemmed Complementing the sugar code: role of GAGs and sialic acid in complement regulation
title_short Complementing the sugar code: role of GAGs and sialic acid in complement regulation
title_sort complementing the sugar code role of gags and sialic acid in complement regulation
topic Complement Factor H
Properdin
innate immunity
Heparan sulfate
complement regulation
sialic acid
url http://journal.frontiersin.org/Journal/10.3389/fimmu.2015.00025/full
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