Treg Therapy for the Induction of Immune Tolerance in Transplantation—Not Lost in Translation?

The clinical success of solid organ transplantation is still limited by the insufficiency of immunosuppressive regimens to control chronic rejection and late graft loss. Moreover, serious side effects caused by chronic immunosuppressive treatment increase morbidity and mortality in transplant patien...

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Main Authors: Nina Pilat, Romy Steiner, Jonathan Sprent
Format: Article
Language:English
Published: MDPI AG 2023-01-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:https://www.mdpi.com/1422-0067/24/2/1752
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author Nina Pilat
Romy Steiner
Jonathan Sprent
author_facet Nina Pilat
Romy Steiner
Jonathan Sprent
author_sort Nina Pilat
collection DOAJ
description The clinical success of solid organ transplantation is still limited by the insufficiency of immunosuppressive regimens to control chronic rejection and late graft loss. Moreover, serious side effects caused by chronic immunosuppressive treatment increase morbidity and mortality in transplant patients. Regulatory T cells (Tregs) have proven to be efficient in the induction of allograft tolerance and prolongation of graft survival in numerous preclinical models, and treatment has now moved to the clinics. The results of the first Treg-based clinical trials seem promising, proving the feasibility and safety of Treg therapy in clinical organ transplantation. However, many questions regarding Treg phenotype, optimum dosage, antigen-specificity, adjunct immunosuppressants and efficacy remain open. This review summarizes the results of the first Treg-based clinical trials for tolerance induction in solid organ transplantation and recapitulates what we have learnt so far and which questions need to be resolved before Treg therapy can become part of daily clinical practice. In addition, we discuss new strategies being developed for induction of donor-specific tolerance in solid organ transplantation with the clinical aims of prolonged graft survival and minimization of immunosuppression.
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spelling doaj.art-06f85a1b894a46b9925e01db0993d0f62023-11-30T22:45:07ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672023-01-01242175210.3390/ijms24021752Treg Therapy for the Induction of Immune Tolerance in Transplantation—Not Lost in Translation?Nina Pilat0Romy Steiner1Jonathan Sprent2Department of Cardiac Surgery, Medical University of Vienna, 1090 Vienna, AustriaDepartment of Cardiac Surgery, Medical University of Vienna, 1090 Vienna, AustriaImmunology Division, Garvan Institute of Medical Research, Darlinghurst, NSW 2010, AustraliaThe clinical success of solid organ transplantation is still limited by the insufficiency of immunosuppressive regimens to control chronic rejection and late graft loss. Moreover, serious side effects caused by chronic immunosuppressive treatment increase morbidity and mortality in transplant patients. Regulatory T cells (Tregs) have proven to be efficient in the induction of allograft tolerance and prolongation of graft survival in numerous preclinical models, and treatment has now moved to the clinics. The results of the first Treg-based clinical trials seem promising, proving the feasibility and safety of Treg therapy in clinical organ transplantation. However, many questions regarding Treg phenotype, optimum dosage, antigen-specificity, adjunct immunosuppressants and efficacy remain open. This review summarizes the results of the first Treg-based clinical trials for tolerance induction in solid organ transplantation and recapitulates what we have learnt so far and which questions need to be resolved before Treg therapy can become part of daily clinical practice. In addition, we discuss new strategies being developed for induction of donor-specific tolerance in solid organ transplantation with the clinical aims of prolonged graft survival and minimization of immunosuppression.https://www.mdpi.com/1422-0067/24/2/1752transplantationregulatory T cellstolerance
spellingShingle Nina Pilat
Romy Steiner
Jonathan Sprent
Treg Therapy for the Induction of Immune Tolerance in Transplantation—Not Lost in Translation?
International Journal of Molecular Sciences
transplantation
regulatory T cells
tolerance
title Treg Therapy for the Induction of Immune Tolerance in Transplantation—Not Lost in Translation?
title_full Treg Therapy for the Induction of Immune Tolerance in Transplantation—Not Lost in Translation?
title_fullStr Treg Therapy for the Induction of Immune Tolerance in Transplantation—Not Lost in Translation?
title_full_unstemmed Treg Therapy for the Induction of Immune Tolerance in Transplantation—Not Lost in Translation?
title_short Treg Therapy for the Induction of Immune Tolerance in Transplantation—Not Lost in Translation?
title_sort treg therapy for the induction of immune tolerance in transplantation not lost in translation
topic transplantation
regulatory T cells
tolerance
url https://www.mdpi.com/1422-0067/24/2/1752
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