Advancing immunosuppression in liver transplantation: the role of regulatory T cells in immune modulation and graft tolerance

Prolonged immunosuppressive therapy in liver transplantation (LT) is associated with significant adverse effects, such as nephrotoxicity, metabolic complications, and heightened risk of infection or malignancy. Regulatory T cells (Tregs) represent a promising target for inducing immune tolerance in...

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Main Authors: Ji Won Han, Su-Hyung Park
Format: Article
Language:English
Published: The Korean Society for Transplantation 2024-12-01
Series:Clinical Transplantation and Research
Subjects:
Online Access:https://www.ctrjournal.org/journal/view.html?doi=10.4285/ctr.24.0059
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author Ji Won Han
Su-Hyung Park
author_facet Ji Won Han
Su-Hyung Park
author_sort Ji Won Han
collection DOAJ
description Prolonged immunosuppressive therapy in liver transplantation (LT) is associated with significant adverse effects, such as nephrotoxicity, metabolic complications, and heightened risk of infection or malignancy. Regulatory T cells (Tregs) represent a promising target for inducing immune tolerance in LT, with the potential to reduce or eliminate the need for life-long immunosuppression. This review summarizes current knowledge on the roles of Tregs in LT, highlighting their mechanisms and the impact of various immunosuppressive agents on Treg stability and function. The liver’s distinct immunological microenvironment, characterized by tolerogenic antigen-presenting cells and high levels of interleukin (IL)-10 and transforming growth factor-β, positions this organ as an ideal setting for Treg-mediated tolerance. We discuss Treg dynamics in LT, their association with rejection risk, and their utility as biomarkers of transplant outcomes. Emerging strategies, including the use of low-dose calcineurin inhibitors with mammalian target of rapamycin inhibitors, adoptive Treg therapy, and low-dose IL-2, aim to enhance Treg function while providing sufficient immunosuppression. Thus, the future of LT involves precision medicine approaches that integrate Treg monitoring with tailored immunosuppressive protocols to optimize long-term outcomes for LT recipients.
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spelling doaj-art-25b7da970654427da83dafe8a5c1cae82025-01-15T02:51:59ZengThe Korean Society for TransplantationClinical Transplantation and Research3022-67832024-12-0138425727210.4285/ctr.24.0059ctr.24.0059Advancing immunosuppression in liver transplantation: the role of regulatory T cells in immune modulation and graft toleranceJi Won Han0Su-Hyung Park1The Catholic University Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul, KoreaGraduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, KoreaProlonged immunosuppressive therapy in liver transplantation (LT) is associated with significant adverse effects, such as nephrotoxicity, metabolic complications, and heightened risk of infection or malignancy. Regulatory T cells (Tregs) represent a promising target for inducing immune tolerance in LT, with the potential to reduce or eliminate the need for life-long immunosuppression. This review summarizes current knowledge on the roles of Tregs in LT, highlighting their mechanisms and the impact of various immunosuppressive agents on Treg stability and function. The liver’s distinct immunological microenvironment, characterized by tolerogenic antigen-presenting cells and high levels of interleukin (IL)-10 and transforming growth factor-β, positions this organ as an ideal setting for Treg-mediated tolerance. We discuss Treg dynamics in LT, their association with rejection risk, and their utility as biomarkers of transplant outcomes. Emerging strategies, including the use of low-dose calcineurin inhibitors with mammalian target of rapamycin inhibitors, adoptive Treg therapy, and low-dose IL-2, aim to enhance Treg function while providing sufficient immunosuppression. Thus, the future of LT involves precision medicine approaches that integrate Treg monitoring with tailored immunosuppressive protocols to optimize long-term outcomes for LT recipients.https://www.ctrjournal.org/journal/view.html?doi=10.4285/ctr.24.0059liver transplantation; regulatory t cell; transplant rejection
spellingShingle Ji Won Han
Su-Hyung Park
Advancing immunosuppression in liver transplantation: the role of regulatory T cells in immune modulation and graft tolerance
Clinical Transplantation and Research
liver transplantation; regulatory t cell; transplant rejection
title Advancing immunosuppression in liver transplantation: the role of regulatory T cells in immune modulation and graft tolerance
title_full Advancing immunosuppression in liver transplantation: the role of regulatory T cells in immune modulation and graft tolerance
title_fullStr Advancing immunosuppression in liver transplantation: the role of regulatory T cells in immune modulation and graft tolerance
title_full_unstemmed Advancing immunosuppression in liver transplantation: the role of regulatory T cells in immune modulation and graft tolerance
title_short Advancing immunosuppression in liver transplantation: the role of regulatory T cells in immune modulation and graft tolerance
title_sort advancing immunosuppression in liver transplantation the role of regulatory t cells in immune modulation and graft tolerance
topic liver transplantation; regulatory t cell; transplant rejection
url https://www.ctrjournal.org/journal/view.html?doi=10.4285/ctr.24.0059
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