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Cao ZR, Zheng WX, Jiang YX, Chai H, Gong JH, Zhao MJ, Yan P, Liu YY, Liu XY, Huang ZT, Yang H, Peng DD, Zong KZ, Wu ZJ. miR-449a ameliorates acute rejection after liver transplantation via targeting procollagen-lysine1,2-oxoglutarate5-dioxygenase 1 in macrophages. Am J Transplant 2023; 23:336-352. [PMID: 36695693 DOI: 10.1016/j.ajt.2022.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 01/13/2023]
Abstract
Acute rejection (AR) is an important factor that leads to poor prognosis after liver transplantation (LT). Macrophage M1-polarization is an important mechanism in AR development. MicroRNAs play vital roles in disease regulation; however, their effects on macrophages and AR remain unclear. In this study, rat models of AR were established following LT, and macrophages and peripheral blood mononuclear cells were isolated from rats and humans, respectively. We found miR-449a expression to be significantly reduced in macrophages and peripheral blood mononuclear cells. Overexpression of miR-449a not only inhibited the M1-polarization of macrophages in vitro but also improved the AR of transplant in vivo. The mechanism involved inhibiting the noncanonical nuclear factor-kappaB (NF-κB) pathway. We identified procollagen-lysine1,2-oxoglutarate5-dioxygenase 1 (PLOD1) as a target gene of miR-449a, which could reverse miR-449a's inhibition of macrophage M1-polarization, amelioration of AR, and inhibition of the NF-κB pathway. Overall, miR-449a inhibited the NF-κB pathway in macrophages through PLOD1 and also inhibited the M1-polarization of macrophages, thus attenuating AR after LT. In conclusion, miR-449a and PLOD1 may be new targets for the prevention and mitigation of AR.
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Affiliation(s)
- Zhen-Rui Cao
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Wei-Xiong Zheng
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Yu-Xin Jiang
- Department of Dermatology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Hao Chai
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Jun-Hua Gong
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Min-Jie Zhao
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Ping Yan
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Yan-Yao Liu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Xiao-Ya Liu
- Department of Oncology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Zuo-Tian Huang
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Hang Yang
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Da-Di Peng
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Ke-Zhen Zong
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Zhong-Jun Wu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
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Liu Y, Qin X, Lei Z, Chai H, Wu Z. Diphenyleneiodonium ameliorates acute liver rejection during transplantation by inhibiting neutrophil extracellular traps formation in vivo. Transpl Immunol 2021; 68:101434. [PMID: 34216758 DOI: 10.1016/j.trim.2021.101434] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 02/06/2023]
Abstract
Neutrophil extracellular traps (NETs) play critical roles in hepatic ischemic reperfusion injury (IRI) induced immune responses to inflammation. Diphenyleneiodonium (DPI) is an NADPH oxidative inhibitor that has been implicated in the regulation of NETs formation. However, the effects of NETs and their underlying mechanisms during DPI treatment of acute rejection (AR) after liver transplantation have not been elucidated. This study tested the hypothesis that blocking NETs formation by DPI treatment could be a potential therapeutic target against AR after liver transplantation. NETs were found to be excessively formed within the livers and serum of transplantation models, which could be an independent risk factor for AR. DPI was shown to alleviate hepatic injury and maintain liver functions by inhibiting NETs formation through the nicotinamide adenine dinucleotide phosphate (NADPH)/ROS/peptidylarginine deiminase 4 (PAD4) signaling pathway. NETs are highly involved in AR after liver transplantation. By inhibiting NETs formation, DPI suppresses activation of the NADPH/ROS/PAD4 signaling pathway which acts against AR after liver transplantation. Therefore, DPI is a potential candidate for the therapeutic management of AR after liver transplantation. Combination treatment containing both DPI and tacrolimus revealed a better antidamage efficacy than adjusting either treatment alone, suggesting that the joint therapy might be a promising solution in AR after liver transplantation.
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Affiliation(s)
- Yanyao Liu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaoyan Qin
- Department of General Surgery of Yuzhong District, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Children Health and Disorders, China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, PR China
| | - Zilun Lei
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hao Chai
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Lin ZB, Yang PJ, Zhang X, Wang JL, Liu K, Dou KF. Translationally controlled tumor protein exerts a proinflammatory role in acute rejection after liver transplantation. Hepatobiliary Pancreat Dis Int 2020; 19:235-243. [PMID: 32224126 DOI: 10.1016/j.hbpd.2020.03.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 03/04/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Translationally controlled tumor protein (TCTP), which has been verified to have a proinflammatory activity, plays an important role in allergy. However, it remains unclear whether TCTP has an impact on the acute rejection (AR) after liver transplantation. METHODS Three protocols were used to delineate the role of TCTP in AR after liver transplantation. First, in rat orthotopic liver transplantation (OLT), the expression of TCTP was measured by enzyme-linked immunosorbent assay (ELISA), real-time PCR, Western blot and immunofluorescence assays. Second, in mixed lymphocyte reaction (MLR), the role of TCTP in lymphocyte proliferation was measured by carboxyfluorescein succinimidyl ester (CFSE) labeling and the impact of TCTP on inflammatory factor release was detected by cytokine arrays. Third, in human OLT, the level of serum TCTP was detected by ELISA, and the relationship between TCTP and model for early allograft function (MEAF) score was assessed by Spearman's correlation. RESULTS In rat OLT, AR resulted in great harm to allografts, manifesting as deterioration of liver function, increasing inflammatory factors and infiltrating lymphocytes. Meanwhile, TCTP was overexpressed in serum and allografts. Higher level of TCTP was associated with higher rejection activity index (RAI). In an MLR protocol, TCTP knockdown inhibited the proliferation of mixed inflammatory cells and significantly suppressed the release of 15 cytokines and chemokines. In human OLT, the serum TCTP was up-regulated within a week after operation. Additionally, the increasing speed of serum TCTP positively correlated with MEAF scores (r = 0.449; P = 0.0088). CONCLUSIONS Up-regulated TCTP positively affects AR after liver transplantation.
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Affiliation(s)
- Zhi-Bin Lin
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Pei-Jun Yang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Xuan Zhang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Jian-Lin Wang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Kun Liu
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Ke-Feng Dou
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China.
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Pereira RHA, Prado AR, Caro LFCD, Zanardo TÉC, Alencar AP, Nogueira BV. A non-linear mathematical model using optical sensor to predict heart decellularization efficacy. Sci Rep 2019; 9:12211. [PMID: 31434981 PMCID: PMC6704168 DOI: 10.1038/s41598-019-48659-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 08/07/2019] [Indexed: 12/14/2022] Open
Abstract
One of the main problems of the decellularization technique is the subjectivity of the final evaluation of its efficacy in individual organs. This problem can result in restricted cell repopulation reproducibility and worse responses to transplant tissues. Our proposal is to analyze the optical profiles produced by hearts during perfusion decellularization, as an additional method for evaluating the decellularization process of each individual organ. An apparatus comprised of a structured LED source and photo detector on an adjustable base was developed to capture the relationship between transmitted light during the perfusion of murine hearts, and residual DNA content. Voltage-time graphic records were used to identify a nonlinear mathematical model to discriminate between decellularizations with remaining DNA above (Incomplete Decellularization) and below (Complete Decellularization) the standardized limits. The results indicate that temporal optical evaluation of the process enables inefficient cell removal to be predicted in the initial stages, regardless of the apparent transparency of the organ. Our open system also creates new possibilities to add distinct photo detectors, such as for specific wavelengths, image acquisition, and physical-chemical evaluation of the scaffold, in order to collect different kinds of information, from dozens of studies. These data, when compiled and submitted to machine learning techniques, have the potential to initiate an exponential advance in tissue bioengineering research.
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Affiliation(s)
- Rayssa Helena Arruda Pereira
- Carlos Alberto Redins Cell Ultrastructure Laboratory (LUCCAR) and Tissue Engineering Core, Department of Morphology - Health Sciences Center, Federal University of Espírito Santo (UFES), Vitória, ES, Brazil
- Biotechnology Graduate Program - Rede Nordeste de Biotecnologia (RENORBIO), Vitória, ES, Brazil
| | - Adilson Ribeiro Prado
- Department of Control Engineering and Automation, Federal Institute of Espírito Santo, Serra, ES, Brazil
| | | | - Tadeu Ériton Caliman Zanardo
- Carlos Alberto Redins Cell Ultrastructure Laboratory (LUCCAR) and Tissue Engineering Core, Department of Morphology - Health Sciences Center, Federal University of Espírito Santo (UFES), Vitória, ES, Brazil
- Biotechnology Graduate Program - Rede Nordeste de Biotecnologia (RENORBIO), Vitória, ES, Brazil
| | - Airlane Pereira Alencar
- Department of Statistic, Institute of Mathematics and Statics, São Paulo University, São Paulo, SP, Brazil
| | - Breno Valentim Nogueira
- Carlos Alberto Redins Cell Ultrastructure Laboratory (LUCCAR) and Tissue Engineering Core, Department of Morphology - Health Sciences Center, Federal University of Espírito Santo (UFES), Vitória, ES, Brazil.
- Biotechnology Graduate Program - Rede Nordeste de Biotecnologia (RENORBIO), Vitória, ES, Brazil.
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5
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Abstract
De novo donor-specific antibody (DSA) formation is a major problem in transplantation, and associated with long-term graft decline and loss as well as sensitization, limiting future transplant options. Forming high-affinity, long-lived antibody responses involves a process called the germinal center (GC) reaction, and requires interaction between several cell types, including GC B cells, T follicular helper (Tfh) and T follicular regulatory (Tfr) cells. T follicular regulatory cells are an essential component of the GC reaction, limiting its size and reducing nonspecific or self-reactive responses.An imbalance between helper function and regulatory function can lead to excessive antibody production. High proportions of Tfh cells have been associated with DSA formation in transplantation; therefore, Tfr cells are likely to play an important role in limiting DSA production. Understanding the signals that govern Tfr cell development and the balance between helper and regulatory function within the GC is key to understanding how these cells might be manipulated to reduce the risk of DSA development.This review discusses the development and function of Tfr cells and their relevance to transplantation. In particular how current and future immunosuppressive strategies might allow us to skew the ratio between Tfr and Tfh cells to increase or decrease the risk of de novo DSA formation.
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IL-34 Inhibits Acute Rejection of Rat Liver Transplantation by Inducing Kupffer Cell M2 Polarization. Transplantation 2019; 102:e265-e274. [PMID: 29570162 DOI: 10.1097/tp.0000000000002194] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Recent studies have demonstrated that IL-34 is implicated in the regulation of macrophage functions. However, the effect of IL-34 on Kupffer cells (KCs) in acute rejection (AR) of liver transplantation remains unclear. METHODS IL-34 expression was detected in graft and serum from allotransplantation and syngeneic transplantation groups. The adeno-associated virus-expressing IL-34 was used to assess the effect of IL-34 on AR of rat liver transplantation. The effect of IL-34 on KC polarization was evaluated by in vitro and in vivo assays. Kupffer cells in donors were depleted by clodronate treatment before transplantation, and the nontreated KCs or lipopolysaccharide-treated KCs were transferred into recipients during liver transplantation. RESULTS IL-34 expression levels in grafts and serum were decreased in the allotransplantation group compared with the syngeneic transplantation group. Adeno-associated virus-expressing IL-34 treatment induced KC M2 polarization in vivo and inhibited the AR of rat liver transplantation. Moreover, we found that IL-34 switched the phenotype of KCs from M1 to M2 by activating the PI3K/Akt pathway in vitro. In addition, the results of KC deletion and adaptive transfer experiments showed that the AR inhibition induced by IL-34 was M2 KC-dependent. CONCLUSIONS IL-34 plays an important role in KC M2 polarization-dependent AR inhibition of rat liver transplantation.
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Abstract
Developments in organ preservation techniques, novel immunosuppressants and improved diagnostics have made organ transplantation the success it is today. That does not mean that we are not still striving to perfect techniques, or that there are no more problems to solve. New strategies to address the donor organ shortage, prevent and manage antibody-mediated rejection, lower long-term allograft failure rates and reduce the toxicity of lifelong immunosuppressive medication are urgently needed, and are being widely researched. Both fundamental research and preclinical studies aim to solve these problems, and ultimately, benefit organ transplant recipients. This article highlights the latest technical developments and trends in xenotransplantation, tissue injury and regeneration, immunosuppression, and transplantation immunology described in the most viewed and cited articles published in the Basic Sciences section of the Transplantation journal during the year 2017.
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Kannegieter NM, Hesselink DA, Dieterich M, de Graav GN, Kraaijeveld R, Baan CC. Analysis of NFATc1 amplification in T cells for pharmacodynamic monitoring of tacrolimus in kidney transplant recipients. PLoS One 2018; 13:e0201113. [PMID: 30036394 PMCID: PMC6056039 DOI: 10.1371/journal.pone.0201113] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 07/09/2018] [Indexed: 02/07/2023] Open
Abstract
Background Therapeutic drug monitoring (TDM) of tacrolimus, based on blood concentrations, shows an imperfect correlation with the occurrence of rejection. Here, we tested whether measuring NFATc1 amplification, a member of the calcineurin pathway, is suitable for TDM of tacrolimus. Materials and methods NFATc1 amplification was monitored in T cells of kidney transplant recipients who received either tacrolimus- (n = 11) or belatacept-based (n = 10) therapy. Individual drug effects on NFATc1 amplification were studied in vitro, after spiking blood samples of healthy volunteers with either tacrolimus, belatacept or mycophenolate mofetil. Results At day 30 after transplantation, in tacrolimus-treated patients, NFATc1 amplification was inhibited in CD4+ T cells expressing the co-stimulation receptor CD28 (mean inhibition 37%; p = 0.01) and in CD8+CD28+ T cells (29% inhibition; p = 0.02), while this was not observed in CD8+CD28- T cells or belatacept-treated patients. Tacrolimus pre-dose concentrations of these patients correlated inversely with NFATc1 amplification in CD28+ T cells (rs = -0.46; p < 0.01). In vitro experiments revealed that 50 ng/ml tacrolimus affected NFATc1 amplification by 58% (mean; p = 0.02). Conclusion In conclusion, measuring NFATc1 amplification is a direct tool for monitoring biological effects of tacrolimus on T cells in whole blood samples of kidney transplant recipients. This technique has potential that requires further development before it can be applied in daily practice.
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Affiliation(s)
- Nynke M. Kannegieter
- Department of Internal Medicine, Section of Transplantation and Nephrology, Rotterdam Transplant Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
- * E-mail:
| | - Dennis A. Hesselink
- Department of Internal Medicine, Section of Transplantation and Nephrology, Rotterdam Transplant Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Marjolein Dieterich
- Department of Internal Medicine, Section of Transplantation and Nephrology, Rotterdam Transplant Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Gretchen N. de Graav
- Department of Internal Medicine, Section of Transplantation and Nephrology, Rotterdam Transplant Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Rens Kraaijeveld
- Department of Internal Medicine, Section of Transplantation and Nephrology, Rotterdam Transplant Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Carla C. Baan
- Department of Internal Medicine, Section of Transplantation and Nephrology, Rotterdam Transplant Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
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9
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Baan CC, de Graav GN, Weimar W, Hesselink DA. Response: Commentary: Belatacept Does Not Inhibit Follicular T Cell-Dependent B-Cell Differentiation in Kidney Transplantation. Front Immunol 2018; 9:466. [PMID: 29569634 PMCID: PMC5852332 DOI: 10.3389/fimmu.2018.00466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 02/21/2018] [Indexed: 11/23/2022] Open
Affiliation(s)
- Carla C Baan
- Section Nephrology and Transplantation, Department Internal Medicine, The Rotterdam Transplant Group, Erasmus MC, University Medical Center, Rotterdam, Netherlands
| | - Gretchen N de Graav
- Section Nephrology and Transplantation, Department Internal Medicine, The Rotterdam Transplant Group, Erasmus MC, University Medical Center, Rotterdam, Netherlands
| | - Willem Weimar
- Section Nephrology and Transplantation, Department Internal Medicine, The Rotterdam Transplant Group, Erasmus MC, University Medical Center, Rotterdam, Netherlands
| | - Dennis A Hesselink
- Section Nephrology and Transplantation, Department Internal Medicine, The Rotterdam Transplant Group, Erasmus MC, University Medical Center, Rotterdam, Netherlands
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