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TIM-4 blockade of KCs combined with exogenous TGF-β injection helps to reverse acute rejection and prolong the survival rate of mice receiving liver allografts

An acute reaction response (AR) following liver transplantation (LT) is caused by immune responses that are primarily mediated by T lymphocytes. Kupffer cells (KCs) are the largest antigen presenting cell (APC) group in vivo and are the primary modulators of the inflammatory or tolerogenic immune re...

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Autores principales: Wu, Hao, Xu, Xuesong, Li, Jinzheng, Gong, Jianping, Li, Min
Formato: Online Artículo Texto
Lenguaje:English
Publicado: D.A. Spandidos 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5979939/
https://www.ncbi.nlm.nih.gov/pubmed/29620252
http://dx.doi.org/10.3892/ijmm.2018.3606
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author Wu, Hao
Xu, Xuesong
Li, Jinzheng
Gong, Jianping
Li, Min
author_facet Wu, Hao
Xu, Xuesong
Li, Jinzheng
Gong, Jianping
Li, Min
author_sort Wu, Hao
collection PubMed
description An acute reaction response (AR) following liver transplantation (LT) is caused by immune responses that are primarily mediated by T lymphocytes. Kupffer cells (KCs) are the largest antigen presenting cell (APC) group in vivo and are the primary modulators of the inflammatory or tolerogenic immune response in liver tissues. T cell immunoglobulin-domain and mucin-domain-4 (TIM-4), the only TIM protein not expressed on T cells, is expressed on APCs; suggesting that it mediates the various immune responses. However, to the best of our knowledge, the role of TIM-4 expressed by KCs in LT injury remains unknown. The present study aimed to explore whether and how TIM-4 expressed by KCs is involved in the AR of liver allografts. Orthotopic liver transplantation (OLT) was performed in mice to establish a model of AR and results demonstrated that LT may lead to the augmented expression of TIM-4 in activated KCs. It was also revealed that TIM-4 blockade markedly attenuated AR injury in vivo via the nuclear factor-κB (NF-κB) and p38 mitogen-activated protein kinase (p38 MAPK) signaling pathways. In addition, levels of transforming growth factor-β (TGF-β) were increased following TIM-4 blockade. Furthermore, in a KC/cluster of differentiation (CD)4(+) T cell co-culture system, blocking TIM-4 inhibited T helper 2 (Th2) differentiation, stimulated the conversion of naive (CD)4(+) T cells into CD4(+)CD25(+)Forkhead box protein p3(+) T regulatory cells and suppressed interleukin-4/signal transducer and activator of transcription 6/transcription factor gata3 signaling. These effects were enhanced following the addition of TGF-β. It was also demonstrated that LT mouse models treated with TIM-4 blockade in combination with exogenous TGF-β injections, increased the survival times of mice and enhanced the amelioration of AR in LT. These results indicate that blocking the expression of TIM-4 by KCs via exogenous TGF-β injection may be an effective therapeutic strategy to inhibit the AR of liver allografts.
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spelling pubmed-59799392018-06-01 TIM-4 blockade of KCs combined with exogenous TGF-β injection helps to reverse acute rejection and prolong the survival rate of mice receiving liver allografts Wu, Hao Xu, Xuesong Li, Jinzheng Gong, Jianping Li, Min Int J Mol Med Articles An acute reaction response (AR) following liver transplantation (LT) is caused by immune responses that are primarily mediated by T lymphocytes. Kupffer cells (KCs) are the largest antigen presenting cell (APC) group in vivo and are the primary modulators of the inflammatory or tolerogenic immune response in liver tissues. T cell immunoglobulin-domain and mucin-domain-4 (TIM-4), the only TIM protein not expressed on T cells, is expressed on APCs; suggesting that it mediates the various immune responses. However, to the best of our knowledge, the role of TIM-4 expressed by KCs in LT injury remains unknown. The present study aimed to explore whether and how TIM-4 expressed by KCs is involved in the AR of liver allografts. Orthotopic liver transplantation (OLT) was performed in mice to establish a model of AR and results demonstrated that LT may lead to the augmented expression of TIM-4 in activated KCs. It was also revealed that TIM-4 blockade markedly attenuated AR injury in vivo via the nuclear factor-κB (NF-κB) and p38 mitogen-activated protein kinase (p38 MAPK) signaling pathways. In addition, levels of transforming growth factor-β (TGF-β) were increased following TIM-4 blockade. Furthermore, in a KC/cluster of differentiation (CD)4(+) T cell co-culture system, blocking TIM-4 inhibited T helper 2 (Th2) differentiation, stimulated the conversion of naive (CD)4(+) T cells into CD4(+)CD25(+)Forkhead box protein p3(+) T regulatory cells and suppressed interleukin-4/signal transducer and activator of transcription 6/transcription factor gata3 signaling. These effects were enhanced following the addition of TGF-β. It was also demonstrated that LT mouse models treated with TIM-4 blockade in combination with exogenous TGF-β injections, increased the survival times of mice and enhanced the amelioration of AR in LT. These results indicate that blocking the expression of TIM-4 by KCs via exogenous TGF-β injection may be an effective therapeutic strategy to inhibit the AR of liver allografts. D.A. Spandidos 2018-07 2018-03-30 /pmc/articles/PMC5979939/ /pubmed/29620252 http://dx.doi.org/10.3892/ijmm.2018.3606 Text en Copyright: © Wu et al. This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License (https://creativecommons.org/licenses/by-nc-nd/4.0/) , which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
spellingShingle Articles
Wu, Hao
Xu, Xuesong
Li, Jinzheng
Gong, Jianping
Li, Min
TIM-4 blockade of KCs combined with exogenous TGF-β injection helps to reverse acute rejection and prolong the survival rate of mice receiving liver allografts
title TIM-4 blockade of KCs combined with exogenous TGF-β injection helps to reverse acute rejection and prolong the survival rate of mice receiving liver allografts
title_full TIM-4 blockade of KCs combined with exogenous TGF-β injection helps to reverse acute rejection and prolong the survival rate of mice receiving liver allografts
title_fullStr TIM-4 blockade of KCs combined with exogenous TGF-β injection helps to reverse acute rejection and prolong the survival rate of mice receiving liver allografts
title_full_unstemmed TIM-4 blockade of KCs combined with exogenous TGF-β injection helps to reverse acute rejection and prolong the survival rate of mice receiving liver allografts
title_short TIM-4 blockade of KCs combined with exogenous TGF-β injection helps to reverse acute rejection and prolong the survival rate of mice receiving liver allografts
title_sort tim-4 blockade of kcs combined with exogenous tgf-β injection helps to reverse acute rejection and prolong the survival rate of mice receiving liver allografts
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5979939/
https://www.ncbi.nlm.nih.gov/pubmed/29620252
http://dx.doi.org/10.3892/ijmm.2018.3606
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