Sialic Acid-Siglec Axis in Human Immune Regulation, Involvement in Autoimmunity and Cancer and Potential Therapeutic Treatments

Siglecs are sialic acid-binding immunoglobulin-like lectins. Most Siglecs function as transmembrane receptors mainly expressed on blood cells in a cell type-specific manner. They recognize and bind sialic acids in specific linkages on glycoproteins and glycolipids. Since Sia is a self-molecule, Sigl...

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Main Authors: Elena Gianchecchi, Andrea Arena, Alessandra Fierabracci
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:https://www.mdpi.com/1422-0067/22/11/5774
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author Elena Gianchecchi
Andrea Arena
Alessandra Fierabracci
author_facet Elena Gianchecchi
Andrea Arena
Alessandra Fierabracci
author_sort Elena Gianchecchi
collection DOAJ
description Siglecs are sialic acid-binding immunoglobulin-like lectins. Most Siglecs function as transmembrane receptors mainly expressed on blood cells in a cell type-specific manner. They recognize and bind sialic acids in specific linkages on glycoproteins and glycolipids. Since Sia is a self-molecule, Siglecs play a role in innate immune responses by distinguishing molecules as self or non-self. Increasing evidence supports the involvement of Siglecs in immune signaling representing immune checkpoints able to regulate immune responses in inflammatory diseases as well as cancer. Although further studies are necessary to fully understand the involvement of Siglecs in pathological conditions as well as their interactions with other immune regulators, the development of therapeutic approaches that exploit these molecules represents a tremendous opportunity for future treatments of several human diseases, as demonstrated by their application in several clinical trials. In the present review, we discuss the involvement of Siglecs in the regulation of immune responses, with particular focus on autoimmunity and cancer and the chance to target the sialic acid-Siglec axis as novel treatment strategy.
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spelling doaj.art-16183f9706e34820acfdcf7b4c29664f2023-11-21T21:48:08ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672021-05-012211577410.3390/ijms22115774Sialic Acid-Siglec Axis in Human Immune Regulation, Involvement in Autoimmunity and Cancer and Potential Therapeutic TreatmentsElena Gianchecchi0Andrea Arena1Alessandra Fierabracci2VisMederi srl, Strada del Petriccio e Belriguardo, 35, 53100 Siena, ItalyInfectivology and Clinical Trials Research Area, Bambino Gesù Children’s Hospital, IRCCS, Viale San Paolo 15, 00146 Rome, ItalyInfectivology and Clinical Trials Research Area, Bambino Gesù Children’s Hospital, IRCCS, Viale San Paolo 15, 00146 Rome, ItalySiglecs are sialic acid-binding immunoglobulin-like lectins. Most Siglecs function as transmembrane receptors mainly expressed on blood cells in a cell type-specific manner. They recognize and bind sialic acids in specific linkages on glycoproteins and glycolipids. Since Sia is a self-molecule, Siglecs play a role in innate immune responses by distinguishing molecules as self or non-self. Increasing evidence supports the involvement of Siglecs in immune signaling representing immune checkpoints able to regulate immune responses in inflammatory diseases as well as cancer. Although further studies are necessary to fully understand the involvement of Siglecs in pathological conditions as well as their interactions with other immune regulators, the development of therapeutic approaches that exploit these molecules represents a tremendous opportunity for future treatments of several human diseases, as demonstrated by their application in several clinical trials. In the present review, we discuss the involvement of Siglecs in the regulation of immune responses, with particular focus on autoimmunity and cancer and the chance to target the sialic acid-Siglec axis as novel treatment strategy.https://www.mdpi.com/1422-0067/22/11/5774siglecsialic acidautoimmunitycancertreatment
spellingShingle Elena Gianchecchi
Andrea Arena
Alessandra Fierabracci
Sialic Acid-Siglec Axis in Human Immune Regulation, Involvement in Autoimmunity and Cancer and Potential Therapeutic Treatments
International Journal of Molecular Sciences
siglec
sialic acid
autoimmunity
cancer
treatment
title Sialic Acid-Siglec Axis in Human Immune Regulation, Involvement in Autoimmunity and Cancer and Potential Therapeutic Treatments
title_full Sialic Acid-Siglec Axis in Human Immune Regulation, Involvement in Autoimmunity and Cancer and Potential Therapeutic Treatments
title_fullStr Sialic Acid-Siglec Axis in Human Immune Regulation, Involvement in Autoimmunity and Cancer and Potential Therapeutic Treatments
title_full_unstemmed Sialic Acid-Siglec Axis in Human Immune Regulation, Involvement in Autoimmunity and Cancer and Potential Therapeutic Treatments
title_short Sialic Acid-Siglec Axis in Human Immune Regulation, Involvement in Autoimmunity and Cancer and Potential Therapeutic Treatments
title_sort sialic acid siglec axis in human immune regulation involvement in autoimmunity and cancer and potential therapeutic treatments
topic siglec
sialic acid
autoimmunity
cancer
treatment
url https://www.mdpi.com/1422-0067/22/11/5774
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AT andreaarena sialicacidsiglecaxisinhumanimmuneregulationinvolvementinautoimmunityandcancerandpotentialtherapeutictreatments
AT alessandrafierabracci sialicacidsiglecaxisinhumanimmuneregulationinvolvementinautoimmunityandcancerandpotentialtherapeutictreatments