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Wang Z, Zeng H, Wang C, Wang J, Zhang J, Qu S, Han Y, Yang L, Ni Y, Peng W, Liu H, Tang H, Zhao Q, Zhang Y. Tim4 deficiency reduces CD301b + macrophage and aggravates periodontitis bone loss. Int J Oral Sci 2024; 16:20. [PMID: 38418808 PMCID: PMC10902347 DOI: 10.1038/s41368-023-00270-z] [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: 10/17/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 03/02/2024] Open
Abstract
Periodontitis is a common chronic inflammatory disease that causes the periodontal bone destruction and may ultimately result in tooth loss. With the progression of periodontitis, the osteoimmunology microenvironment in periodontitis is damaged and leads to the formation of pathological alveolar bone resorption. CD301b+ macrophages are specific to the osteoimmunology microenvironment, and are emerging as vital booster for conducting bone regeneration. However, the key upstream targets of CD301b+ macrophages and their potential mechanism in periodontitis remain elusive. In this study, we concentrated on the role of Tim4, a latent upstream regulator of CD301b+ macrophages. We first demonstrated that the transcription level of Timd4 (gene name of Tim4) in CD301b+ macrophages was significantly upregulated compared to CD301b- macrophages via high-throughput RNA sequencing. Moreover, several Tim4-related functions such as apoptotic cell clearance, phagocytosis and engulfment were positively regulated by CD301b+ macrophages. The single-cell RNA sequencing analysis subsequently discovered that Cd301b and Timd4 were specifically co-expressed in macrophages. The following flow cytometric analysis indicated that Tim4 positive expression rates in total macrophages shared highly synchronized dynamic changes with the proportions of CD301b+ macrophages as periodontitis progressed. Furthermore, the deficiency of Tim4 in mice decreased CD301b+ macrophages and eventually magnified alveolar bone resorption in periodontitis. Additionally, Tim4 controlled the p38 MAPK signaling pathway to ultimately mediate CD301b+ macrophages phenotype. In a word, Tim4 might regulate CD301b+ macrophages through p38 MAPK signaling pathway in periodontitis, which provided new insights into periodontitis immunoregulation as well as help to develop innovative therapeutic targets and treatment strategies for periodontitis.
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Affiliation(s)
- Ziming Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China
| | - Hao Zeng
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China
| | - Can Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China
| | - Jiaolong Wang
- School of Stomatology, Nanchang University, Nanchang, China
| | - Jing Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China
| | - Shuyuan Qu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China
| | - Yue Han
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China
| | - Liu Yang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China
| | - Yueqi Ni
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China
| | - Wenan Peng
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China
| | - Huan Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China
| | - Hua Tang
- Institute of Infection and Immunity, Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Qin Zhao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China.
| | - Yufeng Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan, China.
- Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China.
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2
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Justynski O, Bridges K, Krause W, Forni MF, Phan QM, Sandoval-Schaefer T, Carter K, King DE, Hsia HC, Gazes MI, Vyce SD, Driskell RR, Miller-Jensen K, Horsley V. Apoptosis recognition receptors regulate skin tissue repair in mice. eLife 2023; 12:e86269. [PMID: 38127424 PMCID: PMC10735221 DOI: 10.7554/elife.86269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 11/17/2023] [Indexed: 12/23/2023] Open
Abstract
Apoptosis and clearance of apoptotic cells via efferocytosis are evolutionarily conserved processes that drive tissue repair. However, the mechanisms by which recognition and clearance of apoptotic cells regulate repair are not fully understood. Here, we use single-cell RNA sequencing to provide a map of the cellular dynamics during early inflammation in mouse skin wounds. We find that apoptotic pathways and efferocytosis receptors are elevated in fibroblasts and immune cells, including resident Lyve1+ macrophages, during inflammation. Interestingly, human diabetic foot wounds upregulate mRNAs for efferocytosis pathway genes and display altered efferocytosis signaling via the receptor Axl and its ligand Gas6. During early inflammation in mouse wounds, we detect upregulation of Axl in dendritic cells and fibroblasts via TLR3-independent mechanisms. Inhibition studies in vivo in mice reveal that Axl signaling is required for wound repair but is dispensable for efferocytosis. By contrast, inhibition of another efferocytosis receptor, Timd4, in mouse wounds decreases efferocytosis and abrogates wound repair. These data highlight the distinct mechanisms by which apoptotic cell detection coordinates tissue repair and provides potential therapeutic targets for chronic wounds in diabetic patients.
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Affiliation(s)
- Olivia Justynski
- Dept. of Molecular Cellular and Developmental Biology, Yale University, New Haven, United States
| | - Kate Bridges
- Dept. of Biomedical Engineering, Yale University, New Haven, United States
| | - Will Krause
- Dept. of Molecular Cellular and Developmental Biology, Yale University, New Haven, United States
| | - Maria Fernanda Forni
- Dept. of Molecular Cellular and Developmental Biology, Yale University, New Haven, United States
| | - Quan M Phan
- Washington State University, SMB, Pullman, United States
| | - Teresa Sandoval-Schaefer
- Dept. of Molecular Cellular and Developmental Biology, Yale University, New Haven, United States
| | - Kristyn Carter
- Dept. of Molecular Cellular and Developmental Biology, Yale University, New Haven, United States
| | - Diane E King
- Sunnycrest Bioinformatics, Flemington, United States
| | - Henry C Hsia
- Dept. of Surgery (Plastic), Yale School of Medicine, New Haven, United States
| | - Michael I Gazes
- Dept of Podiatric Surgery, Yale New Haven Hospital, New Haven, United States
| | - Steven D Vyce
- Dept of Podiatric Surgery, Yale New Haven Hospital, New Haven, United States
| | | | - Kathryn Miller-Jensen
- Dept. of Molecular Cellular and Developmental Biology, Yale University, New Haven, United States
- Dept. of Biomedical Engineering, Yale University, New Haven, United States
| | - Valerie Horsley
- Dept. of Molecular Cellular and Developmental Biology, Yale University, New Haven, United States
- Dept. of Dermatology, Yale School of Medicine, New Haven, United States
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3
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Bhattacharya P, Dhawan UK, Hussain MT, Singh P, Bhagat KK, Singhal A, Austin-Williams S, Sengupta S, Subramanian M. Efferocytes release extracellular vesicles to resolve inflammation and tissue injury via prosaposin-GPR37 signaling. Cell Rep 2023; 42:112808. [PMID: 37436891 DOI: 10.1016/j.celrep.2023.112808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/16/2023] [Accepted: 06/27/2023] [Indexed: 07/14/2023] Open
Abstract
Macrophages release soluble mediators following efferocytic clearance of apoptotic cells to facilitate intercellular communication and promote the resolution of inflammation. However, whether inflammation resolution is modulated by extracellular vesicles (EVs) and vesicular mediators released by efferocytes is not known. We report that efferocyte-derived EVs express prosaposin, which binds to macrophage GPR37 to increase expression of the efferocytosis receptor Tim4 via an ERK-AP1-dependent signaling axis, leading to increased macrophage efferocytosis efficiency and accelerated resolution of inflammation. Neutralization and knockdown of prosaposin or blocking GRP37 abrogates the pro-resolution effects of efferocyte-derived EVs in vivo. Administration of efferocyte-derived EVs in a murine model of atherosclerosis is associated with an increase in lesional macrophage efferocytosis efficiency and a decrease in plaque necrosis and lesional inflammation. Thus, we establish a critical role for efferocyte-derived vesicular mediators in increasing macrophage efferocytosis efficiency and accelerating the resolution of inflammation and tissue injury.
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Affiliation(s)
- Purbasha Bhattacharya
- CSIR - Institute of Genomics and Integrative Biology, New Delhi, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Umesh Kumar Dhawan
- William Harvey Research Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Mohammed Tayab Hussain
- William Harvey Research Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Praveen Singh
- CSIR - Institute of Genomics and Integrative Biology, New Delhi, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Karran Kiran Bhagat
- William Harvey Research Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Aarushi Singhal
- William Harvey Research Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Shani Austin-Williams
- William Harvey Research Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Shantanu Sengupta
- CSIR - Institute of Genomics and Integrative Biology, New Delhi, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Manikandan Subramanian
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; William Harvey Research Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK.
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4
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Hirao H, Kageyama S, Nakamura K, Kadono K, Kojima H, Siyuan Y, Farmer DG, Kaldas FM, Dery KJ, Kupiec-Weglinski JW. Recipient TIM4 signaling regulates ischemia reperfusion-induced ER stress and metabolic responses in liver transplantation: from mouse-to-human. FRONTIERS IN TRANSPLANTATION 2023; 2:1176384. [PMID: 38993869 PMCID: PMC11235257 DOI: 10.3389/frtra.2023.1176384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 04/17/2023] [Indexed: 07/13/2024]
Abstract
T-cell immunoglobulin and mucin (Tim)4 is expressed on APCs, including macrophages, as one of the main amplifiers in the mechanism of liver ischemia-reperfusion injury (IRI) following orthotopic liver transplantation (OLT). Though donor Tim4 selectively expressed on Kupffer cells serves as a checkpoint regulator of innate immune-driven IRI cascades, its role on cells outside the OLT remains unclear. To dissect the role of donor vs. recipient-specific Tim4 signaling in IR-induced stress and hepatocellular function, we employed a murine OLT model utilizing Tim4-knockout (KO) mice as either donor or recipient (WT → WT, WT → Tim4-KO, Tim4-KO → WT). In the experimental arm, disruption of donor Tim4 attenuated IRI-OLT damage, while recipient Tim4-null mutation aggravated hepatic IRI concomitant with disturbed lipid metabolism, enhanced endoplasmic reticulum stress, and activated pro-apoptotic signaling in the grafts. In the in vitro study, murine hepatocytes co-cultured with Tim4-null adipose tissue showed enhanced C/EBP homologous protein (CHOP) expression pattern and susceptibility to hepatocellular death accompanied by activated caspase cascade in response to TNF-α stimulation. In the clinical arm, liver grafts from forty-one transplant patients with enhanced TIM4 expression showed higher body mass index, augmented hepatic endoplasmic reticulum stress, enhanced pro-apoptotic markers, upregulated innate/adaptive immune responses, exacerbated hepatocellular damage, and inferior graft survival. In conclusion, although TIM4 is considered a principal villain in peri-transplant early tissue injury, recipient TIM4 signaling may serve as a savior of IR-triggered metabolic stress in mouse and human OLT recipients.
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Affiliation(s)
- Hirofumi Hirao
- Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation, University of California, Los Angeles, Los Angeles, CA, United States
| | - Shoichi Kageyama
- Department of Surgery, Hepato-Biliary-Pancreatic Surgery and Transplantation, Kyoto University, Kyoto, Japan
| | - Kojiro Nakamura
- Department of Surgery, Hepato-Biliary-Pancreatic Surgery and Transplantation, Kyoto University, Kyoto, Japan
| | - Kentaro Kadono
- Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation, University of California, Los Angeles, Los Angeles, CA, United States
| | - Hidenobu Kojima
- Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation, University of California, Los Angeles, Los Angeles, CA, United States
| | - Yao Siyuan
- Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation, University of California, Los Angeles, Los Angeles, CA, United States
| | - Douglas G. Farmer
- Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation, University of California, Los Angeles, Los Angeles, CA, United States
| | - Fady M. Kaldas
- Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation, University of California, Los Angeles, Los Angeles, CA, United States
| | - Kenneth J. Dery
- Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation, University of California, Los Angeles, Los Angeles, CA, United States
| | - Jerzy W. Kupiec-Weglinski
- Dumont-UCLA Transplantation Center, Department of Surgery, Division of Liver and Pancreas Transplantation, University of California, Los Angeles, Los Angeles, CA, United States
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5
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Justynski O, Bridges K, Krause W, Forni MF, Phan Q, Sandoval-Schaefer T, Driskell R, Miller-Jensen K, Horsley V. Apoptosis recognition receptors regulate skin tissue repair in mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.17.523241. [PMID: 36711968 PMCID: PMC9882102 DOI: 10.1101/2023.01.17.523241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Apoptosis and clearance of apoptotic cells via efferocytosis are evolutionarily conserved processes that drive tissue repair. However, the mechanisms by which recognition and clearance of apoptotic cells regulate repair are not fully understood. Here, we use single-cell RNA sequencing to provide a map of the cellular dynamics during early inflammation in mouse skin wounds. We find that apoptotic pathways and efferocytosis receptors are elevated in fibroblasts and immune cells, including resident Lyve1 + macrophages, during inflammation. Interestingly, human diabetic foot wounds upregulate mRNAs for apoptotic genes and display increased and altered efferocytosis signaling via the receptor Axl. During early inflammation in mouse wounds, we detect upregulation of Axl in dendritic cells and fibroblasts via TLR3-independent mechanisms. Inhibition studies in vivo in mice reveal that Axl signaling is required for wound repair but is dispensable for efferocytosis. By contrast, inhibition of another efferocytosis receptor, Timd4, in mouse wounds decreases efferocytosis and abrogates wound repair. These data highlight the distinct mechanisms by which apoptotic cell detection coordinates tissue repair and provides potential therapeutic targets for chronic wounds in diabetic patients.
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6
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Wang Z, Chen C, Su Y, Ke N. Function and characteristics of TIM‑4 in immune regulation and disease (Review). Int J Mol Med 2022; 51:10. [PMID: 36524355 PMCID: PMC9848438 DOI: 10.3892/ijmm.2022.5213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 11/23/2022] [Indexed: 12/14/2022] Open
Abstract
T‑cell/transmembrane immunoglobulin and mucin domain containing 4 (TIM‑4) is a phosphatidylserine receptor that is mainly expressed on antigen‑presenting cells and is involved in the recognition and efferocytosis of apoptotic cells. TIM‑4 has been found to be expressed in immune cells such as natural killer T, B and mast cells and to participate in multiple aspects of immune regulation, suggesting that TIM‑4 may be involved in a variety of immune‑related diseases. Recent studies have confirmed that TIM‑4 is also abnormally expressed in a variety of malignant tumor cells and is closely associated with the occurrence and development of tumors and the tumor immune microenvironment. The present study aimed to describe the expression and functional characteristics of TIM‑4 in detail and to comprehensively discuss its role in pathophysiological processes such as infection, allergy, metabolism, autoimmunity and tumor immunity. The current review provided a comprehensive understanding of the functions and characteristics of TIM‑4, as well as novel ideas for the diagnosis and treatment of diseases.
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Affiliation(s)
- Ziyao Wang
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Chen Chen
- Department of Radiology, The First People's Hospital of Chengdu, Chengdu, Sichuan 610095, P.R. China
| | - Yingzhen Su
- Kunming University School of Medicine, Kunming University School, Kunming, Yunnan 650124, P.R. China
| | - Nengwen Ke
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China,Correspondence to: Professor Nengwen Ke, Department of Pancreatic Surgery, West China Hospital, Sichuan University, 37 Guoxue Lane, Chengdu, Sichuan 610041, P.R. China, E-mail:
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7
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Ni M, Zhang J, Sosa R, Zhang H, Wang H, Jin D, Crowley K, Naini B, Elaine RF, Busuttil RW, Kupiec-Weglinski JW, Wang X, Zhai Y. T-Cell Immunoglobulin and Mucin Domain-Containing Protein-4 Is Critical for Kupffer Cell Homeostatic Function in the Activation and Resolution of Liver Ischemia Reperfusion Injury. Hepatology 2021; 74:2118-2132. [PMID: 33999437 PMCID: PMC9060306 DOI: 10.1002/hep.31906] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/26/2021] [Accepted: 04/29/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS Liver ischemia reperfusion injury (IRI) remains an unresolved clinical problem. This study dissected roles of liver-resident macrophage Kupffer cells (KCs), with a functional focus on efferocytosis receptor T-cell immunoglobulin and mucin domain-containing protein-4 (TIM-4), in both the activation and resolution of IRI in a murine liver partial warm ischemia model. APPROACH AND RESULTS Fluorescence-activated cell sorting results showed that TIM-4 was expressed exclusively by KCs, but not infiltrating macrophages (iMФs), in IR livers. Anti-TIM-4 antibody depleted TIM-4+ macrophages in vivo, resulting in either alleviation or deterioration of liver IRI, which was determined by the repopulation kinetics of the KC niche with CD11b+ macrophages. To determine the KC-specific function of TIM-4, we reconstituted clodronate-liposome-treated mice with exogenous wild-type or TIM-4-deficient KCs at either 0 hour or 24 hours postreperfusion. TIM-4 deficiency in KCs resulted in not only increases in the severity of liver IRI (at 6 hours postreperfusion), but also impairment of the inflammation resolution (at 7 days postreperfusion). In vitro analysis revealed that TIM-4 promoted KC efferocytosis to regulate their Toll-like receptor response by up-regulating IL-10 and down-regulating TNF-α productions. CONCLUSIONS TIM-4 is critical for KC homeostatic function in both the activation and resolution of liver IRI by efferocytosis.
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Affiliation(s)
- Ming Ni
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery,Hepatobiliary Center, Key Laboratory of Liver Transplantation of Chinese Academy of Medical Sciences, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Jing Zhang
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery
| | - Rebecca Sosa
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California-Los Angeles, Los Angeles, CA
| | - Hanwen Zhang
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery
| | - Han Wang
- Hepatobiliary Center, Key Laboratory of Liver Transplantation of Chinese Academy of Medical Sciences, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Dan Jin
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery,Department of Obstetrics and Gynecology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Kaitlyn Crowley
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery
| | - Bita Naini
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery
| | - Reed, F. Elaine
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California-Los Angeles, Los Angeles, CA
| | - Ronald W. Busuttil
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery
| | - Jerzy W. Kupiec-Weglinski
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery
| | - Xuehao Wang
- Hepatobiliary Center, Key Laboratory of Liver Transplantation of Chinese Academy of Medical Sciences, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China,Address for correspondence: Yuan Zhai, MD, PhD. Dumont-UCLA Transplant Center 77-120 CHS, 10833 Le Conte Ave, Los Angeles, CA 90095. Phone: (310) 825-9426; Fax: (310) 267-2367, , Xuehao Wang, MD, Department of Liver Surgery, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, P.R.China 210029, Phone: 86-25-68136053; Fax:86-25-84630769,
| | - Yuan Zhai
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery,Address for correspondence: Yuan Zhai, MD, PhD. Dumont-UCLA Transplant Center 77-120 CHS, 10833 Le Conte Ave, Los Angeles, CA 90095. Phone: (310) 825-9426; Fax: (310) 267-2367, , Xuehao Wang, MD, Department of Liver Surgery, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, P.R.China 210029, Phone: 86-25-68136053; Fax:86-25-84630769,
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8
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Caronni N, Piperno GM, Simoncello F, Romano O, Vodret S, Yanagihashi Y, Dress R, Dutertre CA, Bugatti M, Bourdeley P, Del Prete A, Schioppa T, Mazza EMC, Collavin L, Zacchigna S, Ostuni R, Guermonprez P, Vermi W, Ginhoux F, Bicciato S, Nagata S, Benvenuti F. TIM4 expression by dendritic cells mediates uptake of tumor-associated antigens and anti-tumor responses. Nat Commun 2021; 12:2237. [PMID: 33854047 PMCID: PMC8046802 DOI: 10.1038/s41467-021-22535-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 03/15/2021] [Indexed: 11/30/2022] Open
Abstract
Acquisition of cell-associated tumor antigens by type 1 dendritic cells (cDC1) is essential to induce and sustain tumor specific CD8+ T cells via cross-presentation. Here we show that capture and engulfment of cell associated antigens by tissue resident lung cDC1 is inhibited during progression of mouse lung tumors. Mechanistically, loss of phagocytosis is linked to tumor-mediated downregulation of the phosphatidylserine receptor TIM4, that is highly expressed in normal lung resident cDC1. TIM4 receptor blockade and conditional cDC1 deletion impair activation of tumor specific CD8+ T cells and promote tumor progression. In human lung adenocarcinomas, TIM4 transcripts increase the prognostic value of a cDC1 signature and predict responses to PD-1 treatment. Thus, TIM4 on lung resident cDC1 contributes to immune surveillance and its expression is suppressed in advanced tumors.
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Affiliation(s)
- Nicoletta Caronni
- Department of Cellular Immunology, International Centre for Genetic Engineering and Biotechnology, ICGEB, Trieste, Italy.
- San Raffaele Telethon Institute for Gene Therapy (SR-TIGET), IRCCS San Raffaele Scientific Institute, Milan, Italy.
| | - Giulia Maria Piperno
- Department of Cellular Immunology, International Centre for Genetic Engineering and Biotechnology, ICGEB, Trieste, Italy
| | - Francesca Simoncello
- Department of Cellular Immunology, International Centre for Genetic Engineering and Biotechnology, ICGEB, Trieste, Italy
| | - Oriana Romano
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Simone Vodret
- Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
| | - Yuichi Yanagihashi
- Laboratory of Biochemistry & Immunology, World Premier International Research Center, Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
| | - Regine Dress
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Charles-Antoine Dutertre
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Mattia Bugatti
- Department of Molecular and Translational Medicine, School of Medicine, University of Brescia, Brescia, Italy
| | - Pierre Bourdeley
- Centre for Inflammation Biology and Cancer Immunology, School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Annalisa Del Prete
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
- Humanitas Clinical and Research Center-IRCCS, Rozzano-Milano, Italy
| | - Tiziana Schioppa
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
- Humanitas Clinical and Research Center-IRCCS, Rozzano-Milano, Italy
| | - Emilia Maria Cristina Mazza
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
- Laboratory of Translational Immunology, Humanitas Clinical and Research Center-IRCCS, Rozzano-Milano, Italy
| | - Licio Collavin
- Department of Life Sciences (DSV), University of Trieste, Trieste, Italy
| | - Serena Zacchigna
- Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, Italy
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Renato Ostuni
- San Raffaele Telethon Institute for Gene Therapy (SR-TIGET), IRCCS San Raffaele Scientific Institute, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
| | - Pierre Guermonprez
- Centre for Inflammation Biology and Cancer Immunology, School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - William Vermi
- Department of Molecular and Translational Medicine, School of Medicine, University of Brescia, Brescia, Italy
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, St. Louis, MO, USA
| | - Florent Ginhoux
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
- Shanghai Institute of Immunology, Shanghai JiaoTong University School of Medicine, Shanghai, China
- Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre, Singapore, Singapore
| | - Silvio Bicciato
- Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Shigekatzu Nagata
- Laboratory of Biochemistry & Immunology, World Premier International Research Center, Immunology Frontier Research Center, Osaka University, Suita, Osaka, Japan
| | - Federica Benvenuti
- Department of Cellular Immunology, International Centre for Genetic Engineering and Biotechnology, ICGEB, Trieste, Italy.
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9
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Tim-4 expressing monocytes as a novel indicator to assess disease activity and severity of ulcerative colitis. Life Sci 2021; 269:119077. [PMID: 33465392 DOI: 10.1016/j.lfs.2021.119077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 01/11/2021] [Accepted: 01/11/2021] [Indexed: 01/25/2023]
Abstract
AIMS The dysregulation of the immune response has been shown to be involved in ulcerative colitis (UC) pathogenesis. Tim-4 is a potential regulator of the immune system which plays key roles in multiple autoimmune diseases. However, whether it is involved in UC remains unclear. The aim of this research was to determine the expression of Tim-4 on circulating monocytes and its clinical significance in UC patients. MAIN METHODS In total, 36 UC patients and 34 healthy controls (HCs) were enrolled in this study. The frequencies of CD14+Tim-4+ cells, regulatory T cells (Treg) and CD14+HLA-DR-/low myeloid-derived suppressor cells (MDSCs) in the peripheral blood were determined by flow cytometry. Serum IL-6 levels were determined by chemiluminescence immunoassay. KEY FINDINGS The percentage of CD14+Tim-4+ cells was higher in UC patients than in HCs. The frequency of Treg cells was significantly decreased, while that of MDSCs was significantly increased in UC patients. The frequency of CD14+Tim-4+ cells was significantly elevated in subjects with high severity, high number of defecations per day, high UC disease activity index Mayo score, high IgG, and high levels of inflammatory markers. And the percentages of Tim-4-expressing monocytes were significantly decreased in UC patients that received a 3-week treatment with mesalazine. Furthermore, the frequency of CD14+Tim-4+ cells was also positively correlated with MDSCs and negatively correlated with Treg cells. SIGNIFICANCE CD14+Tim-4+ cells was elevated in UC patients and could be a novel indicator to assess disease severity and activity of UC.
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10
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Liu W, Xu L, Liang X, Liu X, Zhao Y, Ma C, Gao L. Tim-4 in Health and Disease: Friend or Foe? Front Immunol 2020; 11:537. [PMID: 32300343 PMCID: PMC7142236 DOI: 10.3389/fimmu.2020.00537] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 03/09/2020] [Indexed: 12/14/2022] Open
Abstract
T-cell immunoglobulin and mucin domain containing 4 (Tim-4) is a phosphatidylserine receptor and is selectively expressed on antigen presenting cells. Recently, Tim-4 was reported to be expressed on iNKT cells, B1 cells, and tumor cells, suggesting it has multiple biological functions. In this review, we mainly summarize the expression and regulation of Tim-4 in immune cells including T cells, macrophages, dendritic cells, NKT cells, B cells, and mast cells. The expression of Tim-4 in these cells implies that Tim-4 might participate in immune related diseases. Emerging evidence emphasizes a substantial role for Tim-4 in maintaining homeostasis by regulating various immune responses, including viral infection, allergy, autoimmunity, and tumor immunity. Here, we collectively evaluated the role of Tim-4 in health and diseases. This summary will be extremely useful to fully understand the function of Tim-4 in the pathogenesis of immune related diseases, which would provide novel clues for the diagnosis and treatment of diseases.
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Affiliation(s)
- Wen Liu
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection and Immunology, Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Liyun Xu
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection and Immunology, Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, China.,Cell and Molecular Biology Laboratory, Zhoushan Hospital, Zhoushan, China
| | - Xiaohong Liang
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection and Immunology, Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Xiaojun Liu
- Center for Cellular Immunotherapies, University of Pennsylvania Cancer Center, Philadelphia, PA, United States
| | - Yangbing Zhao
- Center for Cellular Immunotherapies, University of Pennsylvania Cancer Center, Philadelphia, PA, United States.,Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Chunhong Ma
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection and Immunology, Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, China
| | - Lifen Gao
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection and Immunology, Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, China
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11
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Ye Z, Jin Y, Li H, Xu H, He Y, Chen Y. Association of Tim-4 expression in monocyte subtypes with clinical course and prognosis in acute ischemic stroke patients. Int J Neurosci 2020; 130:906-916. [PMID: 31877070 DOI: 10.1080/00207454.2019.1709842] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Background: It has been proven that T cell immunoglobin and mucin domain (Tim)-4 and monocytes (Mo) are involved in regulation of immunity, which is important for the recovery of acute ischemic stroke (AIS).Methods: In this study, the expression of Tim-4 in both circulating Mo subtypes and plasma in 32 consecutive AIS patients and 32 control patients was assessed to determine their correlation with the clinical course and prognosis of AIS.Results: It was found that, compared to the control patients, the percentage of Tim-4 expression in overall Mo, classical Mo and non-classical Mo was significantly elevated after 2 and 5 days of stroke (p < 0.05), while it was promoted from 0 to 10 days of stoke in intermediate Mo (p < 0.05). Furthermore, Tim-4 expressions in non-classical Mo and intermediate Mo were obviously correlated with National Institutes of Health Stroke Scale (NIHSS) scores at 2 days of stroke (r = 0.351, p = 0.048; r = 0.358, p = 0.044, respectively). In poor outcome (PO) patients, the expression of Tim-4 in non-classical Mo was remarkably promoted at 2 days of stroke in comparison with non-PO patients (p < 0.05). More importantly, our results revealed a positive correlation between Tim-4 expression in non-classical Mo and interleukin (IL)-6 plasma levels in AIS patients without infection.Conclusion: In summary, our findings proved that Tim-4 expression in non-classical Mo could be an appropriate target for the prediction of the clinical course and prognosis in AIS patients.
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Affiliation(s)
- Zhinan Ye
- Department of Neurology, Taizhou Municipal Hospital, Taizhou, Zhejiang, China
| | - Yingying Jin
- Intensive Care Unit, Taizhou Hospital, Taizhou, Zhejiang, China
| | - Haijun Li
- Department of Neurology, Taizhou Municipal Hospital, Taizhou, Zhejiang, China
| | - Hao Xu
- Department of Neurology, Taizhou Municipal Hospital, Taizhou, Zhejiang, China
| | - Yingye He
- Department of Neurology, Taizhou Municipal Hospital, Taizhou, Zhejiang, China
| | - Ying Chen
- Department of Neurology, Taizhou Municipal Hospital, Taizhou, Zhejiang, China
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12
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Gastrodin Ameliorates Acute Rejection via IRE1 α/TRAF2/NF- κB in Rats Receiving Liver Allografts. BIOMED RESEARCH INTERNATIONAL 2019; 2019:9276831. [PMID: 31828147 PMCID: PMC6886336 DOI: 10.1155/2019/9276831] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 09/05/2019] [Accepted: 09/16/2019] [Indexed: 12/16/2022]
Abstract
Background Liver transplantation (LT) is currently an effective treatment for end-stage liver disease, but the occurrence of acute rejection (AR) is still the main problem to be solved. The present study aimed to evaluate the effect of gastrodin (GAS) on LT. Methods Rat transplant models were established and divided into SHAM, LT, GAS-L (50 mg/kg GAS), and GAS-H (100 mg/kg GAS) groups. The liver function, inflammatory factors, liver histopathology, survival of rats, number of M2-type macrophages, liver cell apoptosis, and pathway proteins were assayed at 7 days and 14 days after the operations. Results With increasing GAS concentrations, liver function, expression of proinflammatory factors in the liver, and expression of M2-type molecules in macrophages were significantly improved, and the survival time of rats was significantly prolonged (P < 0.05). All rats treated with low or high doses of GAS were judged to have nondeterministic acute rejection. Flow cytometry showed that liver cell apoptosis was decreased significantly in the GAS-L and GAS-H groups after GAS administration compared with apoptosis and differentiation in the LT group (P < 0.05). Expression levels of Caspase-3, Bad, and Bax proteins were decreased, and the expression of the antiapoptotic protein Bcl-2 was increased in the GAS-L and GAS-H groups (P < 0.05). Mechanistically, the ERS-related IRE1α/TRAF2/NF-κB pathway was suppressed by GAS, and GAS acted mainly on intrahepatic macrophages to affect AR and reduce ROS production (P < 0.05). Conclusion GAS ameliorated AR by inhibiting the IRE1α/TRAF2/NF-κB pathway in LT.
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13
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Yeung MY, Grimmig T, Sayegh MH. Costimulation Blockade in Transplantation. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1189:267-312. [PMID: 31758538 DOI: 10.1007/978-981-32-9717-3_10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
T cells play a pivotal role in orchestrating immune responses directed against a foreign (allogeneic) graft. For T cells to become fully activated, the T-cell receptor (TCR) must interact with the major histocompatibility complex (MHC) plus peptide complex on antigen-presenting cells (APCs), followed by a second "positive" costimulatory signal. In the absence of this second signal, T cells become anergic or undergo deletion. By blocking positive costimulatory signaling, T-cell allo-responses can be aborted, thus preventing graft rejection and promoting long-term allograft survival and possibly tolerance (Alegre ML, Najafian N, Curr Mol Med 6:843-857, 2006; Li XC, Rothstein DM, Sayegh MH, Immunol Rev 229:271-293, 2009). In addition, costimulatory molecules can provide negative "coinhibitory" signals that inhibit T-cell activation and terminate immune responses; strategies to promote these pathways can also lead to graft tolerance (Boenisch O, Sayegh MH, Najafian N, Curr Opin Organ Transplant 13:373-378, 2008). However, T-cell costimulation involves an incredibly complex array of interactions that may act simultaneously or at different times in the immune response and whose relative importance varies depending on the different T-cell subsets and activation status. In transplantation, the presence of foreign alloantigen incites not only destructive T effector cells but also protective regulatory T cells, the balance of which ultimately determines the fate of the allograft (Lechler RI, Garden OA, Turka LA, Nat Rev Immunol 3:147-158, 2003). Since the processes of alloantigen-specific rejection and regulation both require activation of T cells, costimulatory interactions may have opposing or synergistic roles depending on the cell being targeted. Such complexities present both challenges and opportunities in targeting T-cell costimulatory pathways for therapeutic purposes. In this chapter, we summarize our current knowledge of the various costimulatory pathways in transplantation and review the current state and challenges of harnessing these pathways to promote graft tolerance (summarized in Table 10.1).
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Affiliation(s)
- Melissa Y Yeung
- Department of Medicine, Renal Division, Brigham and Women's Hospital, Boston, MA, USA. .,Harvard Medical School, Boston, MA, USA.
| | - Tanja Grimmig
- Department of Surgery, Molecular Oncology and Immunology, University of Wuerzburg, Wuerzburg, Germany
| | - Mohamed H Sayegh
- Department of Medicine, Renal Division, Brigham and Women's Hospital, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA.,Department of Medicine and Immunology, American University of Beirut, Beirut, Lebanon
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14
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Wu H, Chen G, Wang J, Deng M, Yuan F, Gong J. TIM-4 interference in Kupffer cells against CCL4-induced liver fibrosis by mediating Akt1/Mitophagy signalling pathway. Cell Prolif 2019; 53:e12731. [PMID: 31755616 PMCID: PMC6985653 DOI: 10.1111/cpr.12731] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 10/13/2019] [Accepted: 10/31/2019] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES T-cell immunoglobulin domain and mucin domain-4 (TIM-4) is selectively expressed on antigen-presenting cells (APCs) and modulates various immune responses. However, the role of TIM-4 expressed by Kupffer cells (KCs) in liver fibrosis remains unclear. The present study aimed to explore whether and how TIM-4 expressed by KCs is involved in liver fibrosis. MATERIALS AND METHODS Mice chronic liver fibrosis models were established and divided into the olive-induced control group, CCL4-induced control group, olive-induced TIM-4 interference group and CCL4-induced TIM-4 interference group. Different techniques were used to monitor the fibrotic effects of TIM-4, including histopathological assays, Western blotting, ELISA and transmission electron microscopy. Additionally, mice liver transplant models were established to determine the fibrotic effects of TIM-4 on fibrosis after liver transplantation (LT). RESULTS We found that the induction of liver fibrosis by CCL4 was associated with TIM-4 expression in KCs. TIM-4 interference essentially contributed to liver fibrosis resolution. KCs from the TIM-4 interference group had decreased levels of pro-fibrotic markers, reduced TGF-β1 secretion and inhibited hepatic stellate cell (HSC) differentiation into myofibroblast-like cells. In addition, we used GdCl3 to verify that KCs are the primary source of TGF-β1 during fibrosis progression. Moreover, KCs from CCL4-induced mice showed increased ROS production, mitophagy activation and TGF-β1 secretion. However, TIM-4 interference in the KCs inhibited Akt1-mediated ROS production, resulting in the suppression of PINK1, Parkin and LC3-II/I activation and the reduction of TGF-β1 secretion during liver fibrosis. Additionally, TIM-4 interference potentially attenuated development of fibrosis after LT. CONCLUSIONS Our findings revealed the underlying mechanisms of TIM-4 interference in KCs to mitigate liver fibrosis.
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Affiliation(s)
- Hao Wu
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Guoyong Chen
- Department of Hepatobiliary and pancreatic surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, China
| | - Jingyuan Wang
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Minghua Deng
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Fangchao Yuan
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jianping Gong
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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15
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Malchesky PS. Dr. Takuya Ueno to Serve as a Co-Editor of Transplantation for Artificial Organs. Artif Organs 2018; 41:885-887. [PMID: 28990710 DOI: 10.1111/aor.13049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Pezoldt J, Pasztoi M, Zou M, Wiechers C, Beckstette M, Thierry GR, Vafadarnejad E, Floess S, Arampatzi P, Buettner M, Schweer J, Fleissner D, Vital M, Pieper DH, Basic M, Dersch P, Strowig T, Hornef M, Bleich A, Bode U, Pabst O, Bajénoff M, Saliba AE, Huehn J. Neonatally imprinted stromal cell subsets induce tolerogenic dendritic cells in mesenteric lymph nodes. Nat Commun 2018; 9:3903. [PMID: 30254319 PMCID: PMC6156403 DOI: 10.1038/s41467-018-06423-7] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 09/02/2018] [Indexed: 01/10/2023] Open
Abstract
Gut-draining mesenteric lymph nodes (mLNs) are important for inducing peripheral tolerance towards food and commensal antigens by providing an optimal microenvironment for de novo generation of Foxp3+ regulatory T cells (Tregs). We previously identified microbiota-imprinted mLN stromal cells as a critical component in tolerance induction. Here we show that this imprinting process already takes place in the neonatal phase, and renders the mLN stromal cell compartment resistant to inflammatory perturbations later in life. LN transplantation and single-cell RNA-seq uncover stably imprinted expression signatures in mLN fibroblastic stromal cells. Subsetting common stromal cells across gut-draining mLNs and skin-draining LNs further refine their location-specific immunomodulatory functions, such as subset-specific expression of Aldh1a2/3. Finally, we demonstrate that mLN stromal cells shape resident dendritic cells to attain high Treg-inducing capacity in a Bmp2-dependent manner. Thus, crosstalk between mLN stromal and resident dendritic cells provides a robust regulatory mechanism for the maintenance of intestinal tolerance.
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Affiliation(s)
- Joern Pezoldt
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Maria Pasztoi
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Mangge Zou
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Carolin Wiechers
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Michael Beckstette
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Guilhem R Thierry
- CNRS, INSERM, CIML, Aix Marseille University, 13284, Marseille, France
| | - Ehsan Vafadarnejad
- Helmholtz Institute for RNA-based Infection Research, 97080, Wuerzburg, Germany
| | - Stefan Floess
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Panagiota Arampatzi
- Core Unit Systems Medicine, University of Wuerzburg, 97080, Wuerzburg, Germany
| | - Manuela Buettner
- Institute of Functional and Applied Anatomy, Hannover Medical School, 30625, Hannover, Germany.,Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, 30625, Hannover, Germany
| | - Janina Schweer
- Department Molecular Infection Biology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Diana Fleissner
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Marius Vital
- Research Group Microbial Interactions and Processes, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Dietmar H Pieper
- Research Group Microbial Interactions and Processes, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Marijana Basic
- Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, 30625, Hannover, Germany
| | - Petra Dersch
- Department Molecular Infection Biology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Till Strowig
- Research Group Microbial Immune Regulation, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Mathias Hornef
- Institute of Medical Microbiology, RWTH Aachen, 52074, Aachen, Germany
| | - André Bleich
- Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, 30625, Hannover, Germany
| | - Ulrike Bode
- Institute of Functional and Applied Anatomy, Hannover Medical School, 30625, Hannover, Germany
| | - Oliver Pabst
- Institute of Molecular Medicine, RWTH Aachen, 52074, Aachen, Germany
| | - Marc Bajénoff
- CNRS, INSERM, CIML, Aix Marseille University, 13284, Marseille, France
| | | | - Jochen Huehn
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany.
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17
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The Costimulatory Pathways and T Regulatory Cells in Ischemia-Reperfusion Injury: A Strong Arm in the Inflammatory Response? Int J Mol Sci 2018; 19:ijms19051283. [PMID: 29693595 PMCID: PMC5983665 DOI: 10.3390/ijms19051283] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 04/14/2018] [Accepted: 04/19/2018] [Indexed: 02/08/2023] Open
Abstract
Costimulatory molecules have been identified as crucial regulators in the inflammatory response in various immunologic disease models. These molecules are classified into four different families depending on their structure. Here, we will focus on various ischemia studies that use costimulatory molecules as a target to reduce the inherent inflammatory status. Furthermore, we will discuss the relevant role of T regulatory cells in these inflammatory mechanisms and the costimulatory pathways in which they are involved.
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18
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Wu H, Xu X, Li J, Gong J, Li M. 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. Int J Mol Med 2018; 42:346-358. [PMID: 29620252 PMCID: PMC5979939 DOI: 10.3892/ijmm.2018.3606] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 03/23/2018] [Indexed: 01/01/2023] Open
Abstract
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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Affiliation(s)
- Hao Wu
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Xuesong Xu
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Jinzheng Li
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Jianping Gong
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Min Li
- Department of Hepatobiliary Surgery, Suining Central Hospital, Suining, Sichuan 629099, P.R. China
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19
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Zhang X, Gu J, Zhou L, Mi QS. TIM-4 is expressed on invariant NKT cells but dispensable for their development and function. Oncotarget 2018; 7:71099-71111. [PMID: 27662666 PMCID: PMC5340118 DOI: 10.18632/oncotarget.12153] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 09/12/2016] [Indexed: 11/25/2022] Open
Abstract
T cell immunoglobulin and mucin-4 (TIM-4), mainly expressed on antigen presenting cells, plays a versatile role in immunoregulation. CD1d-restricted invariant natural killer T (iNKT) cells are potent cells involved in the diverse immune responses. It was recently reported that recombinant TIM-4 (rTIM-4) alone enhanced cytokine production in NKT hybridoma, DN32.D3 cells. Hence, we hypothesized that TIM-4 might regulate iNKT cell biology, especially their function of cytokine secretion. For the first time, we identified that TIM-4 was expressed in thymus iNKT cells, and its expression increased upon iNKT cell migration to the secondary lymphoid organs, especially in lymph nodes. Using TIM-4-deficient mice, we found that lack of TIM-4 did not disturb iNKT cell development, maturation, peripheral homeostasis and cytokine secretion. Moreover, TIM-4 deficiency did not alter the polarization of iNKT sublineages, including NKT1, NKT2 and NKT17. Finally, the mixed bone marrow transfer experiments further confirmed normal iNKT cell development and function from TIM-4-deficient bone marrow. In conclusion, our data suggest that TIM-4 is expressed on iNKT cells but dispensable for their development and function.
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Affiliation(s)
- Xilin Zhang
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, United States of America.,Department of Dermatology, Henry Ford Health System, Detroit, MI, United States of America.,Department of Dermatology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jun Gu
- Department of Dermatology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Li Zhou
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, United States of America.,Department of Dermatology, Henry Ford Health System, Detroit, MI, United States of America.,Department of Internal Medicine, Henry Ford Health System, Detroit, MI, United States of America.,Department of Immunology and Microbiology, Wayne State University School of Medicine, MI, United States of America
| | - Qing-Sheng Mi
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, United States of America.,Department of Dermatology, Henry Ford Health System, Detroit, MI, United States of America.,Department of Internal Medicine, Henry Ford Health System, Detroit, MI, United States of America.,Department of Immunology and Microbiology, Wayne State University School of Medicine, MI, United States of America
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20
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Zhang X, Liu Q, Wang J, Li G, Weiland M, Yu FS, Mi QS, Gu J, Zhou L. TIM-4 is differentially expressed in the distinct subsets of dendritic cells in skin and skin-draining lymph nodes and controls skin Langerhans cell homeostasis. Oncotarget 2018; 7:37498-37512. [PMID: 27224924 PMCID: PMC5122327 DOI: 10.18632/oncotarget.9546] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 05/09/2016] [Indexed: 12/28/2022] Open
Abstract
T cell immunoglobulin and mucin-4 (TIM-4), mainly expressed on dendritic cells (DC) and macrophages, plays an essential role in regulating immune responses. Langerhans cells (LC), which are the sole DC subpopulation residing at the epidermis, are potent mediators of immune surveillance and tolerance. However, the significance of TIM-4 on epidermal LCs, along with other cutaneous DCs, remains totally unexplored. For the first time, we discovered that epidermal LCs expressed TIM-4 and displayed an increased level of TIM-4 expression upon migration. We also found that dermal CD207+ DCs and lymph node (LN) resident CD207−CD4+ DCs highly expressed TIM-4, while dermal CD207− DCs and LN CD207−CD4− DCs had limited TIM-4 expressions. Using TIM-4-deficient mice, we further demonstrated that loss of TIM-4 significantly upregulated the frequencies of epidermal LCs and LN resident CD207−CD4+ DCs. In spite of this, the epidermal LCs of TIM-4-deficient mice displayed normal phagocytic and migratory abilities, comparable maturation status upon the stimulation as well as normal repopulation under the inflamed state. Moreover, lack of TIM-4 did not affect dinitrofluorobenzene-induced contact hypersensitivity response. In conclusion, our results indicated that TIM-4 was differentially expressed in the distinct subsets of DCs in skin and skin-draining LNs, and specifically regulated epidermal LC and LN CD207−CD4+ DC homeostasis.
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Affiliation(s)
- Xilin Zhang
- Department of Dermatology, Second Military Medical University Changhai Hospital, Shanghai, China.,Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, United States of America.,Department of Dermatology, Henry Ford Health System, Detroit, MI, United States of America
| | - Queping Liu
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, United States of America.,Department of Dermatology, Henry Ford Health System, Detroit, MI, United States of America
| | - Jie Wang
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, United States of America.,Department of Dermatology, Henry Ford Health System, Detroit, MI, United States of America
| | - Guihua Li
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, United States of America.,Department of Dermatology, Henry Ford Health System, Detroit, MI, United States of America
| | - Matthew Weiland
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, United States of America.,Department of Dermatology, Henry Ford Health System, Detroit, MI, United States of America
| | - Fu-Shin Yu
- Department of Anatomy and Cell Biology, Wayne State University School of Medicine, Detroit, MI, United States of America
| | - Qing-Sheng Mi
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, United States of America.,Department of Dermatology, Henry Ford Health System, Detroit, MI, United States of America.,Department of Internal Medicine, Henry Ford Health System, Detroit, MI, United States of America
| | - Jun Gu
- Department of Dermatology, Second Military Medical University Changhai Hospital, Shanghai, China
| | - Li Zhou
- Henry Ford Immunology Program, Henry Ford Health System, Detroit, MI, United States of America.,Department of Dermatology, Henry Ford Health System, Detroit, MI, United States of America.,Department of Internal Medicine, Henry Ford Health System, Detroit, MI, United States of America
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21
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Abstract
PURPOSE OF REVIEW T-cell immunoglobulin and mucin domain-containing molecule (TIM)4 is a costimulatory molecule and phosphatidylserine receptor. Its dominant function varies according to the expressing cell and site of activation. In recent years, studies have identified its role in diverse disease processes and increasingly in alloimmunity. Herein, we will comprehensively review the literature on TIM4 and outline its function in shaping the alloimmune response. RECENT FINDINGS TIM4 expression on dendritic cells increases following transplantation. Blockade of TIM4 in vivo leads to increased differentiation of regulatory T cells and improved allograft survival. TIM4 binds phosphatidylserine-expressing apoptotic cells. Previously thought of as a tethering molecule, recent studies have demonstrated that TIM4 interacts with integrins to mediate uptake of apoptotic cells. TIM4 B cells have recently been identified, which produce high levels of IFNγ and promote allograft rejection. Targeting these B cells improved allograft survival and promoted the development of TIM1 regulatory B cells. SUMMARY TIM4 is expressed in niche compartments and has many immunological effects. However, inhibition of TIM4 has been demonstrated to prolong allograft survival, through varied mechanisms. A unifying explanation for the role of TIM4 in alloimmunity remains to be found, but this pathway appears to hold considerable promise in transplantation.
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22
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Pilat N, Granofszky N, Wekerle T. Combining Adoptive Treg Transfer with Bone Marrow Transplantation for Transplantation Tolerance. CURRENT TRANSPLANTATION REPORTS 2017; 4:253-261. [PMID: 29201599 PMCID: PMC5691126 DOI: 10.1007/s40472-017-0164-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW The mixed chimerism approach is an exceptionally potent strategy for the induction of donor-specific tolerance in organ transplantation and so far the only one that was demonstrated to work in the clinical setting. Regulatory T cells (Tregs) have been shown to improve chimerism induction in experimental animal models. This review summarizes the development of innovative BMT protocols using therapeutic Treg transfer for tolerance induction. RECENT FINDINGS Treg cell therapy promotes BM engraftment in reduced conditioning protocols in both, mice and non-human primates. In mice, transfer of polyclonal recipient Tregs was sufficient to substitute cytotoxic recipient conditioning. Treg therapy prevented chronic rejection of skin and heart allografts related to tissue-specific antigen disparities, in part by promoting intragraft Treg accumulation. SUMMARY Adoptive Treg transfer is remarkably effective in facilitating BM engraftment in reduced-intensity protocols in mice and non-human primates. Furthermore, it promotes regulatory mechanisms that prevent chronic rejection.
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Affiliation(s)
- Nina Pilat
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Nicolas Granofszky
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Thomas Wekerle
- Section of Transplantation Immunology, Department of Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
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23
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Ding Q, Mohib K, Kuchroo VK, Rothstein DM. TIM-4 Identifies IFN-γ-Expressing Proinflammatory B Effector 1 Cells That Promote Tumor and Allograft Rejection. THE JOURNAL OF IMMUNOLOGY 2017; 199:2585-2595. [PMID: 28848066 DOI: 10.4049/jimmunol.1602107] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 07/24/2017] [Indexed: 11/19/2022]
Abstract
B cells give rise to polarized subsets, including B effector 1 (Be1) cells and regulatory B cells, which can promote or inhibit immune responses through expression of IFN-γ and IL-10, respectively. Such subsets likely explain why B cell depletion can either ameliorate or exacerbate inflammatory diseases; however, these cells remain poorly understood because of the absence of specific markers. Although T cell Ig and mucin domain-containing molecule (TIM)-1 broadly identifies IL-10+ regulatory B cells, no similar markers for Be1 cells have been described. We now show that TIM-4 is expressed by a subset of B cells distinct from those expressing TIM-1. Although TIM-1+ B cells are enriched for IL-10, TIM-4+ B cells are enriched for IFN-γ. TIM-1+ B cells enhanced the growth of B16-F10 melanoma. In contrast, TIM-4+ B cells decreased B16-F10 metastasis and s.c. tumor growth, and this was IFN-γ dependent. TIM-1+ B cells prolonged islet allograft survival in B-deficient mice, whereas TIM-4+ B cells accelerated rejection in an IFN-γ-dependent manner. Moreover, TIM-4+ B cells promoted proinflammatory Th differentiation in vivo, increasing IFN-γ while decreasing IL-4, IL-10, and Foxp3 expression by CD4+ T cells-effects that are opposite from those of TIM-1+ B cells. Importantly, a monoclonal anti-TIM-4 Ab promoted allograft tolerance, and this was dependent on B cell expression of TIM-4. Anti-TIM-4 downregulated T-bet and IFN-γ expression by TIM-4+ B cells and indirectly increased IL-10 expression by TIM-1+ B cells. Thus, TIM-4+ B cells are enriched for IFN-γ-producing proinflammatory Be1 cells that enhance immune responsiveness and can be specifically targeted with anti-TIM-4.
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Affiliation(s)
- Qing Ding
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Kanishka Mohib
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Vijay K Kuchroo
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115; and.,Ann Romney Center for Neurologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115
| | - David M Rothstein
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261;
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24
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Liu XY, Xu LZ, Luo XQ, Geng XR, Liu ZQ, Yang LT, Yang G, Chen S, Liu ZG, Li HB, Yang LT, Luan TG, Yang PC. Forkhead box protein-3 (Foxp3)-producing dendritic cells suppress allergic response. Allergy 2017; 72:908-917. [PMID: 27861999 DOI: 10.1111/all.13088] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/10/2016] [Indexed: 12/28/2022]
Abstract
BACKGROUND The generation of the tolerogenic dendritic cells (DC) is not fully understood yet. Forkhead box protein-3 (Foxp3) is an important molecule in the immune tolerance. This study tests a hypothesis that DCs express Foxp3, which can be upregulated by Staphylococcal enterotoxin B (SEB). METHODS The expression of Foxp3 by DCs was evaluated by real-time RT-PCR, Western blotting, flow cytometry, and chromatin immunoprecipitation assay. RESULTS We observed that mice treated with SEB at 0.25-0.5 μg/mouse showed high frequencies of transforming growth factor (TGF)-β-producing CD4+ T cells and TGF-β-producing DCs in the intestine, while the IL-4+ CD4+ T cells and TIM4+ DCs were dominated in the intestine in mice treated with SEB at 1-10 μg/mouse. Treating DCs with SEB in the culture induced high levels of Foxp3 at the TGF-β promoter locus. The function of Foxp3 was blocked by STAT6 (signal transducer and activator transcription-6); the latter was induced by exposing DCs to SEB in the culture at doses of 100-400 ng/ml. Treating allergic mice with specific immunotherapy (SIT) together with SEB significantly promoted the therapeutic effects on the allergic responses than treating with SIT alone. CONCLUSION Dendritic cells have the capacity to express Foxp3, which can be upregulated by exposure to SEB.
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Affiliation(s)
- X.-Y. Liu
- MOE Key Laboratory of Aquatic Product Safety; School of Life Sciences; School of Marine Sciences; Sun Yat-Sen University; Guangzhou 510275 China
| | - L.-Z. Xu
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
| | - X.-Q. Luo
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
| | - X.-R. Geng
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
- Shenzhen ENT Institute; Longgang ENT Hospital; Shenzhen China
| | - Z.-Q. Liu
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
- Shenzhen ENT Institute; Longgang ENT Hospital; Shenzhen China
| | - L.-T. Yang
- Department of Allergy; Affiliated Luohu Hospital of Shenzhen University; Shenzhen China
| | - G. Yang
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
- Shenzhen ENT Institute; Longgang ENT Hospital; Shenzhen China
| | - S. Chen
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
| | - Z.-G. Liu
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
| | - H.-B. Li
- Department of Otolaryngology; Head and Neck Surgery; Affiliated Eye, Ear; Nose and Throat Hospital; Fudan University; Shanghai China
| | - L.-T. Yang
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
- Shenzhen ENT Institute; Longgang ENT Hospital; Shenzhen China
- Brain Body Institute; McMaster University; Hamilton ON Canada
| | - T.-G. Luan
- MOE Key Laboratory of Aquatic Product Safety; School of Life Sciences; School of Marine Sciences; Sun Yat-Sen University; Guangzhou 510275 China
| | - P.-C. Yang
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
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25
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Ansari AW, Khan MA, Schmidt RE, Broering DC. Harnessing the immunotherapeutic potential of T-lymphocyte co-signaling molecules in transplantation. Immunol Lett 2017; 183:8-16. [PMID: 28119073 DOI: 10.1016/j.imlet.2017.01.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 01/10/2017] [Accepted: 01/12/2017] [Indexed: 12/12/2022]
Abstract
Alloantigen-specific T-cell triggered immunopathological events are responsible for rapid allograft rejection. The co-signaling pathways orchestrated by co-stimulatory and co-inhibitory molecules are critical for optimal T-cell effector function. Therefore, selective blockade of pathways that control T-cell immunity may offer an attractive therapeutic strategy to manipulate cell mediated allogenic responses. For example, CD28, CTLA-4 and CD154 receptor blockade have proven beneficial in maintaining T-cell tolerance against transplanted organs in experimental animal models as well as in clinical trials. Conversely, induction of co-inhibitory molecules may result in suppressed effector function. There are several other potential molecules that are known to induce immune tolerance are currently under consideration for clinical studies. In this review, we provide a comprehensive and updated analysis of co-stimulatory and co-inhibitory molecules, their therapeutic potential to prevent graft rejection, and to further improve their long-term survival.
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Affiliation(s)
- Abdul W Ansari
- Organ Transplant Research Section, Department of Comparative Medicine, MBC03, King Faisal Specialist Hospital & Research Centre, Riyadh 11211, Saudi Arabia.
| | - Mohammad A Khan
- Organ Transplant Research Section, Department of Comparative Medicine, MBC03, King Faisal Specialist Hospital & Research Centre, Riyadh 11211, Saudi Arabia
| | - Reinhold E Schmidt
- Department of Clinical Immunology and Rheumatology, Hannover Medical School, Carl-Neuberg Str.1, D-30625 Hannover, Germany
| | - Dieter C Broering
- Organ Transplant Research Section, Department of Comparative Medicine, MBC03, King Faisal Specialist Hospital & Research Centre, Riyadh 11211, Saudi Arabia.
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26
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Mo LH, Yang LT, Zeng L, Xu LZ, Zhang HP, Li LJ, Liu JQ, Xiao XJ, Zheng PY, Liu ZG, Yang PC. Dust mite allergen, glutathione S-transferase, induces T cell immunoglobulin mucin domain-4 in dendritic cells to facilitate initiation of airway allergy. Clin Exp Allergy 2016; 47:264-270. [PMID: 27532130 DOI: 10.1111/cea.12800] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 07/03/2016] [Accepted: 07/17/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND Allergens from dust mites play a critical role in the pathogenesis of airway allergy. The mechanism by which dust mite allergens induce allergic diseases is not fully understood yet. OBJECTIVE This study tests a hypothesis that the eighth subtypes of Dermatophagoides farina allergen (Derf8) play an important role in the induction of airway allergy. METHODS The protein of Derf8 was synthesized via molecular cloning approach. Dendritic cells (DC) were stimulated with Derf8 in the culture, and then, the expression of T cell immunoglobulin mucin domain 4 (TIM4) in dendritic cells (DC) was analysed. The role of Derf8 in the induction of airway allergy was evaluated with a mouse model. RESULTS Exposure to Derf8 markedly induced the TIM4 expression in DCs by modulating the chromatin at the TIM4 promoter locus. Derf8 played a critical role in the expansion of the T helper 2 response in the mouse airway via inducing DCs to produce TIM4. Administration with Derf8-depleted dust mite extracts (DME) inhibited the allergic inflammation and induced regulatory T cells in mice with airway allergy. CONCLUSION Derf8 plays an important role in the initiation of dust mite allergy. Vaccination with Derf8-deficient DME is more efficient to inhibit the dust mite allergic inflammation than using wild DME.
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Affiliation(s)
- L-H Mo
- The Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China.,Longgang ENT Hospital, Shenzhen, China
| | - L-T Yang
- The Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China.,Longgang ENT Hospital, Shenzhen, China.,Brain Body Institute, McMaster University, Hamilton, ON, Canada
| | - L Zeng
- The Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - L-Z Xu
- The Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - H-P Zhang
- Brain Body Institute, McMaster University, Hamilton, ON, Canada
| | - L-J Li
- Brain Body Institute, McMaster University, Hamilton, ON, Canada
| | - J-Q Liu
- The Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China.,Longgang ENT Hospital, Shenzhen, China.,Brain Body Institute, McMaster University, Hamilton, ON, Canada
| | - X-J Xiao
- The Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - P-Y Zheng
- Department of Gastroenterology, The Fifth Hospital, Zhengzhou University, Zhengzhou, China
| | - Z-G Liu
- The Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - P-C Yang
- The Research Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
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27
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He WT, Zhang LM, Li C, Li SY, Ding ZC, Fang ZM, Meng FY, Chen ZK, Zhou P. Short-term MyD88 inhibition ameliorates cardiac graft rejection and promotes donor-specific hyporesponsiveness of skin grafts in mice. Transpl Int 2016; 29:941-52. [PMID: 27125343 DOI: 10.1111/tri.12789] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 06/05/2015] [Accepted: 04/25/2016] [Indexed: 01/25/2023]
Abstract
Recognition of evolutionarily conserved ligands by Toll-like receptors (TLRs) triggers signaling cascades in innate immune cells to amplify adaptive immune responses. Nearly all TLRs require MyD88 to transduce downstream signaling. MyD88 deficiency has been shown to promote the allograft acceptance in mice. However, direct evidence for therapeutic potential of MyD88 inhibitors remains lacking. Herein, we used a MyD88 inhibitor, namely ST2825, to explore its therapeutic potential and mechanisms in fully allogeneic skin and heart transplant models. Phenotypic maturation of dendritic cells stimulated by TLR ligands was alleviated by ST2825 in parallel with reduced T-cell proliferation in vitro. A short-course treatment with ST2825 significantly prolonged cardiac graft survival (mean survival time = 18.5 ± 0.92 days vs. 7.25 ± 0.46 days). ST2825-treated group had significantly reduced proinflammatory cytokines in allografts compared with control group. ST2825 combined with anti-CD154 induced long-term skin allograft acceptance in about one-third of recipients (>100 days). 'Skin-tolerant' recipients showed attenuated donor-specific IFN-γ responses, intact IL-4 responses, and compromised alloantibody responses. We conclude that MyD88 inhibitor ST2825 attenuates acute cardiac rejection and promotes donor-specific hyporesponsiveness in stringent skin transplant models. The direct evidence suggests that pharmacological inhibition of MyD88 hold promising potential for transplant rejection.
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Affiliation(s)
- Wen-Tao He
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Key Laboratory of Organ Transplantation, Ministry of Education and Key Laboratory of Organ Transplantation, Ministry of Health, Wuhan, China.,Department of Endocrinology and Metabolism, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Li-Min Zhang
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Key Laboratory of Organ Transplantation, Ministry of Education and Key Laboratory of Organ Transplantation, Ministry of Health, Wuhan, China
| | - Chao Li
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Key Laboratory of Organ Transplantation, Ministry of Education and Key Laboratory of Organ Transplantation, Ministry of Health, Wuhan, China.,Department of General Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Shu-Yuan Li
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Key Laboratory of Organ Transplantation, Ministry of Education and Key Laboratory of Organ Transplantation, Ministry of Health, Wuhan, China.,Department of General Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Zuo-Chuan Ding
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Key Laboratory of Organ Transplantation, Ministry of Education and Key Laboratory of Organ Transplantation, Ministry of Health, Wuhan, China
| | - Ze-Min Fang
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Key Laboratory of Organ Transplantation, Ministry of Education and Key Laboratory of Organ Transplantation, Ministry of Health, Wuhan, China
| | - Fan-Ying Meng
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Key Laboratory of Organ Transplantation, Ministry of Education and Key Laboratory of Organ Transplantation, Ministry of Health, Wuhan, China
| | - Zhonghua Klaus Chen
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Key Laboratory of Organ Transplantation, Ministry of Education and Key Laboratory of Organ Transplantation, Ministry of Health, Wuhan, China
| | - Ping Zhou
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Key Laboratory of Organ Transplantation, Ministry of Education and Key Laboratory of Organ Transplantation, Ministry of Health, Wuhan, China
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28
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Abstract
The ultimate outcome of alloreactivity versus tolerance following transplantation is potently influenced by the constellation of cosignaling molecules expressed by immune cells during priming with alloantigen, and the net sum of costimulatory and coinhibitory signals transmitted via ligation of these molecules. Intense investigation over the last two decades has yielded a detailed understanding of the kinetics, cellular distribution, and intracellular signaling networks of cosignaling molecules such as the CD28, TNF, and TIM families of receptors in alloimmunity. More recent work has better defined the cellular and molecular mechanisms by which engagement of cosignaling networks serve to either dampen or augment alloimmunity. These findings will likely aid in the rational development of novel immunomodulatory strategies to prolong graft survival and improve outcomes following transplantation.
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Affiliation(s)
- Mandy L Ford
- Emory Transplant Center and Department of Surgery, Emory University, Atlanta, GA 30322, USA.
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29
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李 学, 李 旭, 段 世, 徐 雪, 刘 一, 李 金, 龚 建, 吴 皓. [Effect of inhibiting TIM-4 function in Kupffer cells on liver graft rejection in mice]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2016; 37:451-459. [PMID: 28446395 PMCID: PMC6744090 DOI: 10.3969/j.issn.1673-4254.2017.04.05] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To investigate the effects of inhibiting TIM-4 function in Kupffer cells (KCs) on liver graft rejection in mice and explore the underlying mechanism. METHODS Mouse models of orthotopic liver transplantation were treated with a control mAb group and TIM-4 mAb. The activated KCs were assayed with immunohistochemistry after operation. The expression of TIM-4 in KCs were assayed with Western blotting and RT-PCR and the levels of AST, ALT, TBIL, TNF-α, IFN-γ and CCL2 were assayed detected. The expression of TIM-4 in KCs was observed with laser confocal microscopy. HE staining was used to observe the microstructure of the liver tissues, and the number of CD25+Foxp3+T cells was determined using with flow cytometry; the proteins levels of p-P65and p-P38 were assayed with Western blotting. The donor mice were treated with clodronate liposomes to destroy the KCs in the liver before transplantation, and the liver grafts were examined for graft rejection. RESULTS The number of activated KCs in the liver graft increased progressively over time. Compared with the sham-operated group, the liver graft showed significantly increased TIM-4 protein and mRNA levels at 1, 3, and 7 days after transplantation (P<0.05) and increased levels of AST, ALT, TBIL, TNF-α, IFN-γ and CCL2 at 7 days (P<0.05). The graft in TIM-4 mAb group showed mild pathological changes with a mean RAI score of 2.67∓0.75, which was significantly lower than that in control mAb group (P<0.05). The mean survival time of the recipient mice was 53.8∓6.4 days in TIM-4 mAb group, significantly longer than that in the control mAB group (14.5∓2.9 days, P<0.05). Donor treatment with clodronate liposomes resulted in comparable RAI scores in TIM-4 mAb and control mAb groups (8.01∓0.64 vs 7.93∓0.56, P>0.05). The protein levels of p-P65 and p-P38 in TIM-4 mAb group were significantly lower than those in control mAb group (P<0.05), and CD25+Foxp3+T cells in the liver graft increased significantly in TIM-4 mAb group. CONCLUSION Inhibition of TIM-4 function in KCs reduces the production of inflammatory factors after liver transplantation possibly by inhibiting the NF-κB and MAPK signaling pathways and promoting the proliferation of Foxp3+Treg cells to induce allograft tolerance.
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Affiliation(s)
- 学强 李
- 重庆市九龙坡区人民医院西城院区普外科,重庆 401329Department of General Surgery, West People's Hospital of Jiulongpo District, Chongqing 401329, China
| | - 旭宏 李
- 重庆三峡中心医院百安分院普外科,重庆 404000Department of General Surgery, Bai'an Branch of Chongqing Three Gorges Central Hospital, Chongqing 404000, China
| | - 世刚 段
- 重庆重庆市第九人民医院普外科,重庆 400799Department of General Surgery, Ninth People's Hospital of Chongqing, Chongqing 400799, China
| | - 雪松 徐
- 重庆医科大学附属第二医院肝胆外科,重庆 400010Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - 一鸣 刘
- 重庆医科大学附属第二医院肝胆外科,重庆 400010Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - 金政 李
- 重庆医科大学附属第二医院肝胆外科,重庆 400010Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - 建平 龚
- 重庆医科大学附属第二医院肝胆外科,重庆 400010Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - 皓 吴
- 重庆医科大学附属第二医院肝胆外科,重庆 400010Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
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Zhao P, Wang H, Li T, Lei C, Xu X, Wang W, Liang X, Ma C, Gao L. Increased T cell immunoglobulin and mucin domain containing 4 (TIM-4) is negatively correlated with serum concentrations of interleukin-1β in type 2 diabetes. J Diabetes 2016; 8:199-205. [PMID: 25676395 DOI: 10.1111/1753-0407.12276] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 12/21/2014] [Accepted: 01/20/2015] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND T cell immunoglobulin and mucin domain containing 4 (TIM-4), a novel immune regulator, is selectively expressed on antigen-presenting cells, especially macrophages and mature dendritic cells. Although TIM-4 plays key roles in mutiple immune diseases, whether it is involved in type 2 diabetes mellitus (T2D) remains unknown. The aim of the present study was to investigate the expression of TIM-4 in T2D and determine its significance in disease progression. METHODS Peripheral blood mononuclear cells (PBMC) were isolated from T2D patients and healthy controls to measure TIM-4 mRNA expression by real-time polymerase chain reaction (PCR), and sera were collected to determine interleukin (IL)-1β concentrations and other clinical indicators (high-sensitivity C-reactive protein [hsCRP], total cholesterol, low-density lipoprotein cholesterol [LDL-C], high-density lipoprotein cholesterol, triglyceride, fasting glucose, HbA1c, aspartate aminotransferase, and alanine aminotransferase). RESULTS Expression of TIM-4 mRNA was increased significantly in PBMCs from T2D patients compared with healthy controls. There was a positive correlation between TIM-4 mRNA expression and serum concentrations of hsCRP. However, there was a negative correlation between TIM-4 mRNA expression and IL-1β concentrations, indicating the potential role for TIM-4 to negatively regulate IL-1β production. In addition, TIM-4 mRNA expression was negatively correlated with lowLDL-C, and there was a tendency for a negative relationship between TIM-4 mRNA expression and HbA1c. CONCLUSIONS The results of the present study indicate that TIM-4 contributes, at least in part, to the pathogenesis of T2D, possibly by regulating IL-1β.
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Affiliation(s)
- Peiqing Zhao
- Department of Immunology, Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection & Immunology, Shandong University School of Medicine, Jinan, China
- Department of Central Laboratory, Zibo Central Hospital, Zibo, China
| | - Hongxing Wang
- Department of Immunology, Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection & Immunology, Shandong University School of Medicine, Jinan, China
| | - Tao Li
- Department of Central Laboratory, Zibo Central Hospital, Zibo, China
| | - Chengbin Lei
- Department of Central Laboratory, Zibo Central Hospital, Zibo, China
| | - Xiaoyan Xu
- Department of Immunology, Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection & Immunology, Shandong University School of Medicine, Jinan, China
| | - Wei Wang
- Department of Immunology, Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection & Immunology, Shandong University School of Medicine, Jinan, China
| | - Xiaohong Liang
- Department of Immunology, Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection & Immunology, Shandong University School of Medicine, Jinan, China
| | - Chunhong Ma
- Department of Immunology, Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection & Immunology, Shandong University School of Medicine, Jinan, China
| | - Lifen Gao
- Department of Immunology, Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection & Immunology, Shandong University School of Medicine, Jinan, China
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Li J, Zhao X, Liu X, Liu H. Disruption of TIM-4 in dendritic cell ameliorates hepatic warm IR injury through the induction of regulatory T cells. Mol Immunol 2015; 66:117-25. [DOI: 10.1016/j.molimm.2015.02.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 02/02/2015] [Accepted: 02/05/2015] [Indexed: 12/30/2022]
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Abstract
PURPOSE OF REVIEW Stimulatory and inhibitory receptor signaling (cosignaling) on T cells is a critical component of T-cell responses that mediate graft rejection. The blockade of cosignaling pathways is an attractive strategy for preventing allogeneic T-cell responses. Here, we review the new studies that provide critical insight into the well studied CD28-CTLA-4 and CD40-CD40L cosignaling pathways, as well as the identification of novel cosignaling receptors that play a role in allogeneic T-cell responses. RECENT FINDINGS Recently, it has been appreciated that the CD28-CTLA-4 pathway has unique roles on specific T-cell subsets, particularly on forkhead box P3 (FoxP3)+ regulatory T cell (Treg) and T helper 17 (Th17) cells. New insight has been provided into the mechanism by which CD40-CD154 blockade elicits FoxP3+ Treg conversion and memory T cells elicit CD40-independent alloantibody responses. Finally, several novel cosignaling pathways have been demonstrated to be important to graft-specific T cells, including CD160, signaling lymphocytic activation molecule family member 2B4, T-cell Ig mucin 4, and the Notch receptor. SUMMARY Recent work has provided more granular understanding of the CD28-CTLA-4 and CD40-CD154 pathways on T-cell subsets, and provided important insight into the generation and maintenance of FoxP3+ Treg. This information, as well as the characterization of novel transplantation-relevant cosignaling pathways, has implications for the modulation of alloreactive T-cell responses.
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Ji H, Liu Y, Zhang Y, Shen XD, Gao F, Busuttil RW, Kuchroo VK, Kupiec-Weglinski JW. T-cell immunoglobulin and mucin domain 4 (TIM-4) signaling in innate immune-mediated liver ischemia-reperfusion injury. Hepatology 2014; 60:2052-2064. [PMID: 25066922 PMCID: PMC4396987 DOI: 10.1002/hep.27334] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 07/24/2014] [Indexed: 12/11/2022]
Abstract
UNLABELLED Hepatic ischemia-reperfusion injury (IRI), an innate immunity-driven inflammation response, occurs in multiple clinical settings including liver resection, transplantation, trauma, and shock. T-cell immunoglobulin and mucin (TIM)-4, the only TIM protein not expressed on T cells, is found on macrophages and dendritic cells. The regulatory function of macrophage TIM-4 in the engulfment of apoptotic/necrotic bodies in innate immunity-mediated disease states remains unknown. This study focuses on the putative role of TIM-4 signaling in a model of liver warm ischemia (90 minutes) and reperfusion. The ischemia insult triggered TIM-4 expression by stressed hepatocellular phosphatidylserine (PS) presentation, peaking at 6 hours of reperfusion, and coinciding with the maximal hepatocellular damage. TIM-4-deficient or wild-type WT mice treated with antagonistic TIM-4 monoclonal antibody (mAb) were resistant against liver IRI, evidenced by diminished serum alanine aminotransferase (sALT) levels and well-preserved hepatic architecture. Liver hepatoprotection rendered by TIM-4 deficiency was accompanied by diminished macrophage infiltration/chemoattraction, phagocytosis, and activation of Toll-like receptor (TLR)2/4/9-dependent signaling. Correlating with in vivo kinetics, the peak of TIM-4 induction in lipopolysaccharide (LPS)-activated bone marrow derived-macrophages (BMM) was detected in 6-hour cultures. To mimic liver IRI, we employed hydrogen peroxide-necrotic hepatocytes, which readily present PS. Indeed, necrotic hepatocytes were efficiently captured/engulfed by WT (TIM-4+) but not by TIM-4-deficient BMM. Finally, in a newly established model of liver IRI, adoptive transfer of WT but not TIM-4-deficient BMM readily recreated local inflammation response/hepatocellular damage in the CD11b-DTR mouse system. CONCLUSION These findings document the importance of macrophage-specific TIM-4 activation in the mechanism of hepatic IRI. Macrophage TIM-4 may represent a therapeutic target to minimize innate inflammatory responses in IR-stressed organs.
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Affiliation(s)
- Haofeng Ji
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at University of California-Los Angeles, Los Angeles, CA, USA
| | - Yuanxing Liu
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at University of California-Los Angeles, Los Angeles, CA, USA., Department of Surgery, Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yu Zhang
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at University of California-Los Angeles, Los Angeles, CA, USA., Department of Surgery, Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xiu-da Shen
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at University of California-Los Angeles, Los Angeles, CA, USA
| | - Feng Gao
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at University of California-Los Angeles, Los Angeles, CA, USA
| | - Ronald W. Busuttil
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at University of California-Los Angeles, Los Angeles, CA, USA
| | - Vijay K. Kuchroo
- Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jerzy W. Kupiec-Weglinski
- Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at University of California-Los Angeles, Los Angeles, CA, USA
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Fang XY, Xu WD, Pan HF, Leng RX, Ye DQ. Novel insights into Tim-4 function in autoimmune diseases. Autoimmunity 2014; 48:189-95. [DOI: 10.3109/08916934.2014.983266] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Thornley TB, Fang Z, Balasubramanian S, Larocca RA, Gong W, Gupta S, Csizmadia E, Degauque N, Kim BS, Koulmanda M, Kuchroo VK, Strom TB. Fragile TIM-4-expressing tissue resident macrophages are migratory and immunoregulatory. J Clin Invest 2014; 124:3443-54. [PMID: 24983317 DOI: 10.1172/jci73527] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 05/22/2014] [Indexed: 01/03/2023] Open
Abstract
Macrophages characterized as M2 and M2-like regulate immune responses associated with immune suppression and healing; however, the relationship of this macrophage subset to CD169+ tissue-resident macrophages and their contribution to shaping alloimmune responses is unknown. Here we identified a population of M2-like tissue-resident macrophages that express high levels of the phosphatidylserine receptor TIM-4 and CD169 (TIM-4hiCD169+). Labeling and tracking of TIM-4hiCD169+ macrophages in mice revealed that this population is a major subset of tissue-resident macrophages, homes to draining LNs following oxidative stress, exhibits an immunoregulatory and hypostimulatory phenotype that is maintained after migration to secondary lymphoid organs, favors preferential induction of antigen-stimulated Tregs, and is highly susceptible to apoptosis. Moreover, CD169+ tissue-resident macrophages were resistant to oxidative stress-induced apoptosis in mice lacking TIM-4. Compared with heart allografts from WT mice, Tim4-/- heart allografts survived much longer and were more easily tolerized by non-immunosuppressed recipients. Furthermore, Tim4-/- allograft survival was associated with the infiltration of Tregs into the graft. Together, our data provide evidence that M2-like TIM-4hiCD169+ tissue-resident macrophages are immunoregulatory and promote engraftment of cardiac allografts, but their influence is diminished by TIM-4-dependent programmed cell death.
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