1
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Zhao Y, Xiang Z, Pan H, Huang X, Chen W, Huang Z. FGL2 improves experimental colitis related to gut microbiota structure and bile acid metabolism by regulating macrophage autophagy and apoptosis. Heliyon 2024; 10:e34349. [PMID: 39104498 PMCID: PMC11298944 DOI: 10.1016/j.heliyon.2024.e34349] [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: 01/10/2024] [Revised: 07/07/2024] [Accepted: 07/08/2024] [Indexed: 08/07/2024] Open
Abstract
Inflammatory bowel disease (IBD) is a refractory disease with immune abnormalities and pathological changes. Intestinal macrophages are considered to be the main factor in establishing and maintaining intestinal homeostasis. The immunoregulatory and anti-inflammatory activity of fibrinogen-like protein 2 (FGL2) can regulate macrophage polarization. However, its function in IBD is unclear. In this study, we explored the effect of FGL2 on macrophage polarization, autophagy, and apoptosis in bone marrow-derived macrophages (BMDMs) treated with lipopolysaccharide (LPS) and further investigated changes in the intestinal barrier, flora, and bile acid in dextran sodium sulfate (DSS)-treated mice. Our results demonstrated that FGL2-/- weakened ERK signaling to promote M1 polarization and upregulate inflammation, autophagy, and apoptosis in LPS-stimulated BMDMs. rFGL2 treatment reversed these effects. FGL2-/- mice exhibited higher sensitivity to DSS exposure, with faster body weight loss, shorter colon lengths, and higher disease activity index (DAI) values. rFGL2 treatment protected against experimental ulcerative colitis (UC), restrained excessive autophagy, apoptosis, and improved gut barrier impairment. Gut microbiota structure and bile acid homeostasis were more unbalanced in FGL2-/- DSS mice than in wild-type (WT) DSS mice. rFGL2 treatment improved gut microbiota structure and bile acid homeostasis. Altogether, our results established that FGL2 is a potential therapeutic target for IBD.
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Affiliation(s)
- Yuan Zhao
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Zheng Xiang
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Haoran Pan
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Xielin Huang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Weizhen Chen
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Zhiming Huang
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
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2
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Chen J, Wu L, Li Y. FGL1 and FGL2: emerging regulators of liver health and disease. Biomark Res 2024; 12:53. [PMID: 38816776 PMCID: PMC11141035 DOI: 10.1186/s40364-024-00601-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 05/21/2024] [Indexed: 06/01/2024] Open
Abstract
Liver disease is a complex group of diseases with high morbidity and mortality rates, emerging as a major global health concern. Recent studies have highlighted the involvement of fibrinogen-like proteins, specifically fibrinogen-like protein 1 (FGL1) and fibrinogen-like protein 2 (FGL2), in the regulation of various liver diseases. FGL1 plays a crucial role in promoting hepatocyte growth, regulating lipid metabolism, and influencing the tumor microenvironment (TME), contributing significantly to liver repair, non-alcoholic fatty liver disease (NAFLD), and liver cancer. On the other hand, FGL2 is a multifunctional protein known for its role in modulating prothrombin activity and inducing immune tolerance, impacting viral hepatitis, liver fibrosis, hepatocellular carcinoma (HCC), and liver transplantation. Understanding the functions and mechanisms of fibrinogen-like proteins is essential for the development of effective therapeutic approaches for liver diseases. Additionally, FGL1 has demonstrated potential as a disease biomarker in radiation and drug-induced liver injury as well as HCC, while FGL2 shows promise as a biomarker in viral hepatitis and liver transplantation. The expression levels of these molecules offer exciting prospects for disease assessment. This review provides an overview of the structure and roles of FGL1 and FGL2 in different liver conditions, emphasizing the intricate molecular regulatory processes and advancements in targeted therapies. Furthermore, it explores the potential benefits and challenges of targeting FGL1 and FGL2 for liver disease treatment and the prospects of fibrinogen-like proteins as biomarkers for liver disease, offering insights for future research in this field.
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Affiliation(s)
- Jiongming Chen
- Chongqing University Cancer Hospital, School of Medicine, Chongqing University, Chongqing, 400030, China
| | - Lei Wu
- Chongqing University Cancer Hospital, School of Medicine, Chongqing University, Chongqing, 400030, China.
- Department of Medical Oncology, Chongqing University Cancer Hospital, Chongqing, 400030, China.
| | - Yongsheng Li
- Chongqing University Cancer Hospital, School of Medicine, Chongqing University, Chongqing, 400030, China.
- Department of Medical Oncology, Chongqing University Cancer Hospital, Chongqing, 400030, China.
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3
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Galpin KJC, Rodriguez GM, Maranda V, Cook DP, Macdonald E, Murshed H, Zhao S, McCloskey CW, Chruscinski A, Levy GA, Ardolino M, Vanderhyden BC. FGL2 promotes tumour growth and attenuates infiltration of activated immune cells in melanoma and ovarian cancer models. Sci Rep 2024; 14:787. [PMID: 38191799 PMCID: PMC10774293 DOI: 10.1038/s41598-024-51217-1] [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: 07/31/2023] [Accepted: 01/02/2024] [Indexed: 01/10/2024] Open
Abstract
The tumour microenvironment is infiltrated by immunosuppressive cells, such as regulatory T cells (Tregs), which contribute to tumour escape and impede immunotherapy outcomes. Soluble fibrinogen-like protein 2 (sFGL2), a Treg effector protein, inhibits immune cell populations, via receptors FcγRIIB and FcγRIII, leading to downregulation of CD86 in antigen presenting cells and limiting T cell activation. Increased FGL2 expression is associated with tumour progression and poor survival in several different cancers, such as glioblastoma multiforme, lung, renal, liver, colorectal, and prostate cancer. Querying scRNA-seq human cancer data shows FGL2 is produced by cells in the tumour microenvironment (TME), particularly monocytes and macrophages as well as T cells and dendritic cells (DCs), while cancer cells have minimal expression of FGL2. We studied the role of FGL2 exclusively produced by cells in the TME, by leveraging Fgl2 knockout mice. We tested two murine models of cancer in which the role of FGL2 has not been previously studied: epithelial ovarian cancer and melanoma. We show that absence of FGL2 leads to a more activated TME, including activated DCs (CD86+, CD40+) and T cells (CD25+, TIGIT+), as well as demonstrating for the first time that the absence of FGL2 leads to more activated natural killer cells (DNAM-1+, NKG2D+) in the TME. Furthermore, the absence of FGL2 leads to prolonged survival in the B16F10 melanoma model, while the absence of FGL2 synergizes with oncolytic virus to prolong survival in the ID8-p53-/-Brca2-/- ovarian cancer model. In conclusion, targeting FGL2 is a promising cancer treatment strategy alone and in combination immunotherapies.
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Affiliation(s)
- Kristianne J C Galpin
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Galaxia M Rodriguez
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Vincent Maranda
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - David P Cook
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Elizabeth Macdonald
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Humaira Murshed
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Shan Zhao
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Curtis W McCloskey
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Andrzej Chruscinski
- Multi-Organ Transplant Program, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Gary A Levy
- Multi-Organ Transplant Program, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Michele Ardolino
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Barbara C Vanderhyden
- Cancer Therapeutics Program, Ottawa Hospital Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada.
- Department of Cellular and Molecular Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada.
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Zheng W, Yang L, Jiang S, Chen M, Li J, Liu Z, Wu Z, Gong J, Chen Y. Role of Kupffer cells in tolerance induction after liver transplantation. Front Cell Dev Biol 2023; 11:1179077. [PMID: 37601106 PMCID: PMC10435084 DOI: 10.3389/fcell.2023.1179077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 07/24/2023] [Indexed: 08/22/2023] Open
Abstract
Currently, liver transplantation has reached a level of maturity where it is considered an effective treatment for end-stage liver disease and can significantly prolong the survival time of patients. However, acute and chronic rejection remain major obstacles to its efficacy. Although long-term use of immunosuppressants can prevent rejection, it is associated with serious side effects and significant economic burden for patients. Therefore, the investigation of induced immune tolerance holds crucial theoretical significance and socio-economic value. In fact, the establishment of immune tolerance in liver transplantation is intricately linked to the unique innate immune system of the liver. Kupffer cells, as a crucial component of this system, play a pivotal role in maintaining the delicate balance between inflammatory response and immune tolerance following liver transplantation. The important roles of different functions of Kupffer cells, such as phagocytosis, cell polarization, antigen presentation and cell membrane proteins, in the establishment of immune tolerance after transplantation is comprehensively summarized in this paper. Providing theoretical basis for further study and clinical application of Kupffer cells in liver transplantation.
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Affiliation(s)
- Weixiong Zheng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Lingxiang Yang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shiming Jiang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Mingxiang Chen
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jinzheng Li
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zuojing Liu
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhongjun Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jianping Gong
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yong Chen
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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5
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Yang H, Huang Z, Luo Y, Lei D, Yan P, Shen A, Liu W, Li D, Wu Z. TRIM37 exacerbates hepatic ischemia/reperfusion injury by facilitating IKKγ translocation. Mol Med 2023; 29:62. [PMID: 37158850 PMCID: PMC10165779 DOI: 10.1186/s10020-023-00653-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 04/14/2023] [Indexed: 05/10/2023] Open
Abstract
BACKGROUND Hepatic ischemia/reperfusion (I/R) injury is one of the major pathological processes associated with various liver surgeries. However, there is still a lack of strategies to protect against hepatic I/R injury because of the unknown underlying mechanism. The present study aimed to identify a potential strategy and provide a fundamental experimental basis for treating hepatic I/R injury. METHOD A classic 70% ischemia/reperfusion injury was established. Immunoprecipitation was used to identify direct interactions between proteins. The expression of proteins from different subcellular localizations was detected by Western blotting. Cell translocation was directly observed by immunofluorescence. HE, TUNEL and ELISA were performed for function tests. RESULT We report that tripartite motif containing 37 (TRIM37) aggravates hepatic I/R injury through the reinforcement of IKK-induced inflammation following dual patterns. Mechanistically, TRIM37 directly interacts with tumor necrosis factor receptor-associated factor 6 (TRAF6), inducing K63 ubiquitination and eventually leading to the phosphorylation of IKKβ. TRIM37 enhances the translocation of IKKγ, a regulatory subunit of the IKK complex, from the nucleus to the cytoplasm, thereby stabilizing the cytoplasmic IKK complex and prolonging the duration of inflammation. Inhibition of IKK rescued the function of TRIM37 in vivo and in vitro. CONCLUSION Collectively, the present study discloses some potential function of TRIM37 in hepatic I/R injury. Targeting TRIM37 might be potential for treatment against hepatic I/R injury.Targeting TRIM37 might be a potential treatment strategy against hepatic I/R injury.
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Affiliation(s)
- Hang Yang
- The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
| | - Zuotian Huang
- Department of Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing, China
| | - Yunhai Luo
- The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
| | - Dengliang Lei
- The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
| | - Ping Yan
- The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China
- CAS Key Laboratory of Infection and Immunity, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China
| | - Ai Shen
- Department of Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing, China
| | - Wenbin Liu
- Department of Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing, China
| | - Dewei Li
- Department of Hepatobiliary Pancreatic Tumor Center, Chongqing University Cancer Hospital, Chongqing, China.
| | - Zhongjun Wu
- The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuanjiagang, Yuzhong District, Chongqing, 400016, China.
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Wang J, Ma Y, Wang J. miR-27a-5p inhibits acute rejection of liver transplantation in rats by inducing M2 polarization of Kupffer cells through the PI3K/Akt pathway. Cytokine 2023; 165:156085. [PMID: 37003239 DOI: 10.1016/j.cyto.2022.156085] [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: 09/22/2022] [Revised: 10/28/2022] [Accepted: 11/01/2022] [Indexed: 04/03/2023]
Abstract
Liver transplantation (LT), a major therapy for end-stage liver disease, is often associated with acute rejection (AR). MicroRNAs (miRNAs) have been implicated in AR-related gene regulation. In this experiment, the mechanism of miR-27a-5p in AR of LT was studied. Allotransplantation model (LEW-BN) and syngeneic transplantation model (LEW-LEW) of rat orthotopic liver transplantation (OLT) were established. miR-27a-5p was overexpressed in recipient rats 28 days before LT to detect its effects on LT pathology, liver function, and survival time. Kupffer cells (KCs) were isolated and treated with lipopolysaccharide (LPS) and miR-27a-5p overexpression. miR-27a-5p overexpression reduced lymphocyte numbers around portal areas and central veins after LT and mitigated degeneration of epithelial cells of the bile duct. Expression levels of IL-10 and TGF-β1 were increased while IL-12 was decreased. Liver function damage was alleviated and the survival time of rats with LT was prolonged. miR-27a-5p induced M2 polarization of rats with AR after LT and LPS-treated KCs in vitro and promoted activation of the PI3K/Akt pathway in KCs. Inhibition of the PI3K/Akt pathway averted induction of miR-27a-5p on M2 polarization of KCs. Taken together, miR-27a-5p inhibited AR after LT in rats by inducing M2 polarization of KCs through the PI3K/Akt pathway.
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Affiliation(s)
- Jian Wang
- School of Physical Education Shanxi University, 030006 Taiyuan, China
| | - Yuanyuan Ma
- Research Center for Health Promotion of Children and Adolescents, Taiyuan Institute of Technology, No. 31, Xinlan Road, Jiancaoping District, 030008 Taiyuan, China.
| | - Jinxian Wang
- Research Center for Health Promotion of Children and Adolescents, Taiyuan Institute of Technology, No. 31, Xinlan Road, Jiancaoping District, 030008 Taiyuan, China
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7
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Bidirectional Regulation of Sodium Acetate on Macrophage Activity and Its Role in Lipid Metabolism of Hepatocytes. Int J Mol Sci 2023; 24:ijms24065536. [PMID: 36982619 PMCID: PMC10051801 DOI: 10.3390/ijms24065536] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/03/2023] [Accepted: 03/09/2023] [Indexed: 03/15/2023] Open
Abstract
Short-chain fatty acids (SCFAs) are important metabolites of the intestinal flora that are closely related to the development of non-alcoholic fatty liver disease (NAFLD). Moreover, studies have shown that macrophages have an important role in the progression of NAFLD and that a dose effect of sodium acetate (NaA) on the regulation of macrophage activity alleviates NAFLD; however, the exact mechanism of action remains unclear. This study aimed to assess the effect and mechanism of NaA on regulating the activity of macrophages. RAW264.7 and Kupffer cells cell lines were treated with LPS and different concentrations of NaA (0.01, 0.05, 0.1, 0.5, 1, 1.5, 2, and 5 mM). Low doses of NaA (0.1 mM, NaA-L) significantly increased the expression of inflammatory factors tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin 1 beta (IL-1β); it also increased the phosphorylation of inflammatory proteins nuclear factor-κB p65 (NF-κB p65) and c-Jun (p < 0.05), and the M1 polarization ratio of RAW264.7 or Kupffer cells. Contrary, a high concentration of NaA (2 mM, NaA-H) reduced the inflammatory responses of macrophages. Mechanistically, high doses of NaA increased intracellular acetate concentration in macrophages, while a low dose had the opposite effect, consisting of the trend of changes in regulated macrophage activity. Besides, GPR43 and/or HDACs were not involved in the regulation of macrophage activity by NaA. NaA significantly increased total intracellular cholesterol (TC), triglycerides (TG), and lipid synthesis gene expression levels in macrophages and hepatocytes at either high or low concentrations. Furthermore, NaA regulated the intracellular AMP/ATP ratio and AMPK activity, achieving a bidirectional regulation of macrophage activity, in which the PPARγ/UCP2/AMPK/iNOS/IκBα/NF-κB signaling pathway has an important role. In addition, NaA can regulate lipid accumulation in hepatocytes by NaA-driven macrophage factors through the above-mentioned mechanism. The results revealed that the mode of NaA bi-directionally regulating the macrophages further affects hepatocyte lipid accumulation.
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8
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Cao ZR, Zheng WX, Jiang YX, Chai H, Gong JH, Zhao MJ, Yan P, Liu YY, Liu XY, Huang ZT, Yang H, Peng DD, Zong KZ, Wu ZJ. miR-449a ameliorates acute rejection after liver transplantation via targeting procollagen-lysine1,2-oxoglutarate5-dioxygenase 1 in macrophages. Am J Transplant 2023; 23:336-352. [PMID: 36695693 DOI: 10.1016/j.ajt.2022.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 01/13/2023]
Abstract
Acute rejection (AR) is an important factor that leads to poor prognosis after liver transplantation (LT). Macrophage M1-polarization is an important mechanism in AR development. MicroRNAs play vital roles in disease regulation; however, their effects on macrophages and AR remain unclear. In this study, rat models of AR were established following LT, and macrophages and peripheral blood mononuclear cells were isolated from rats and humans, respectively. We found miR-449a expression to be significantly reduced in macrophages and peripheral blood mononuclear cells. Overexpression of miR-449a not only inhibited the M1-polarization of macrophages in vitro but also improved the AR of transplant in vivo. The mechanism involved inhibiting the noncanonical nuclear factor-kappaB (NF-κB) pathway. We identified procollagen-lysine1,2-oxoglutarate5-dioxygenase 1 (PLOD1) as a target gene of miR-449a, which could reverse miR-449a's inhibition of macrophage M1-polarization, amelioration of AR, and inhibition of the NF-κB pathway. Overall, miR-449a inhibited the NF-κB pathway in macrophages through PLOD1 and also inhibited the M1-polarization of macrophages, thus attenuating AR after LT. In conclusion, miR-449a and PLOD1 may be new targets for the prevention and mitigation of AR.
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Affiliation(s)
- Zhen-Rui Cao
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Wei-Xiong Zheng
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Yu-Xin Jiang
- Department of Dermatology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Hao Chai
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Jun-Hua Gong
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Min-Jie Zhao
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Ping Yan
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Yan-Yao Liu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Xiao-Ya Liu
- Department of Oncology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Zuo-Tian Huang
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Hang Yang
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Da-Di Peng
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Ke-Zhen Zong
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
| | - Zhong-Jun Wu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.
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9
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Fu L, Liu Z, Liu Y. Fibrinogen-like protein 2 in inflammatory diseases: A future therapeutic target. Int Immunopharmacol 2023; 116:109799. [PMID: 36764282 DOI: 10.1016/j.intimp.2023.109799] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 12/09/2022] [Accepted: 01/25/2023] [Indexed: 02/10/2023]
Abstract
Fibrinogen-like protein 2 (FGL2), a member of the fibrinogen family, exists as a membrane-bound protein with immune-associated coagulation activity and a soluble form possessing immunosuppressive functions. The immunomodulatory role of FGL2 is evident in fibrin deposition-associated inflammatory diseases and cancer, suggesting that FGL2 expression could be exploited as a disease biomarker and a therapeutic target. Recently, in vitro studies and knockout and transgenic animal FGL2 models have been used by us and others to reveal the involvement of FGL2 in the pathogenesis of various inflammatory diseases. This review summarizes our current knowledge of the immunomodulatory role of FGL2 in inflammatory diseases and examines the role of FGL2 as a potential therapeutic target.
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Affiliation(s)
- Li Fu
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Allergy and Clinical Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Clinical Research Center for Nasal Inflammatory Diseases, Wuhan, China
| | - Zheng Liu
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Allergy and Clinical Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Clinical Research Center for Nasal Inflammatory Diseases, Wuhan, China.
| | - Yang Liu
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Allergy and Clinical Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Hubei Clinical Research Center for Nasal Inflammatory Diseases, Wuhan, China.
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10
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Casey LM, Hughes KR, Saunders MN, Miller SD, Pearson RM, Shea LD. Mechanistic contributions of Kupffer cells and liver sinusoidal endothelial cells in nanoparticle-induced antigen-specific immune tolerance. Biomaterials 2022; 283:121457. [PMID: 35286851 PMCID: PMC11225973 DOI: 10.1016/j.biomaterials.2022.121457] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/10/2022] [Accepted: 03/03/2022] [Indexed: 02/06/2023]
Abstract
The intravenous delivery of disease-relevant antigens (Ag) by polymeric nanoparticles (NP-Ags) has demonstrated Ag-specific immune tolerance in autoimmune and allergic disorders as well as allogeneic transplant rejection. NP-Ags are observed to distribute to the spleen, which has an established role in the induction of immune tolerance. However, studies have shown that the spleen is dispensable for NP-Ag-induced tolerance, suggesting significant contributions from other immunological sites. Here, we investigated the tolerogenic contributions of Kupffer cells (KCs) and liver sinusoidal endothelial cells (LSECs) to NP-Ag-induced tolerance in a mouse model of multiple sclerosis, experimental autoimmune encephalomyelitis (EAE). Intravenously delivered Ag-conjugated poly(lactide-co-glycolide) NPs (PLG-Ag) distributed largely to the liver, where they associated with both KCs and LSECs. This distribution was accompanied by CD4 T cell accumulation, clonal deletion, and PD-L1 expression by KCs and LSECs. Ex vivo co-cultures of PLG-Ag-treated KCs or LSECs with Ag-specific CD4 T cells resulted in PGE2 and IL-10 or PGE2 secretion, respectively. KC depletion and adoptive transfer experiments demonstrated that KCs were sufficient, but not necessary, to mediate PLG-Ag-induced tolerance in EAE. The durability of PLG-Ag-induced tolerance in the absence of KCs may be attributed to the distribution of PLG-Ags to LSECs, which demonstrated similar levels of PD-L1, PGE2, and T cell stimulatory ability. Collectively, these studies provide mechanistic support for the role of liver KCs and LSECs in Ag-specific tolerance for a biomaterial platform that is currently being evaluated in clinical trials.
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Affiliation(s)
- Liam M Casey
- Department of Chemical Engineering, University of Michigan, 2300 Hayward Avenue, Ann Arbor, MI, 48105, USA
| | - Kevin R Hughes
- Department of Biomedical Engineering, University of Michigan, 1119 Carl A. Gerstacker Building, 2200 Bonisteel Boulevard, Ann Arbor, MI, 48109, USA
| | - Michael N Saunders
- Department of Biomedical Engineering, University of Michigan, 1119 Carl A. Gerstacker Building, 2200 Bonisteel Boulevard, Ann Arbor, MI, 48109, USA; Medical Scientist Training Program, University of Michigan, 1135 Catherine St., 2965 Taubman Health Sciences Library, Ann Arbor, MI, 48109, USA
| | - Stephen D Miller
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, 6-713 Tarry Building, 303 E. Chicago Avenue, Chicago, IL, 60611, USA; Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, 60208, USA; The Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, 60611, USA
| | - Ryan M Pearson
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 20 N. Pine Street, Baltimore, MD, 21201, USA; Department of Microbiology and Immunology, University of Maryland School of Medicine, 685 W. Baltimore Street, Baltimore, MD, 21201, USA; Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, 22 S. Greene Street, Baltimore, MD, 21201, USA.
| | - Lonnie D Shea
- Department of Chemical Engineering, University of Michigan, 2300 Hayward Avenue, Ann Arbor, MI, 48105, USA; Department of Biomedical Engineering, University of Michigan, 1119 Carl A. Gerstacker Building, 2200 Bonisteel Boulevard, Ann Arbor, MI, 48109, USA.
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11
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Liu ZN, Wu X, Fang Q, Li ZX, Xia GQ, Cai JN, Lv XW. CD73 Attenuates Alcohol-Induced Liver Injury and Inflammation via Blocking TLR4/MyD88/NF-κB Signaling Pathway. J Inflamm Res 2022; 15:53-70. [PMID: 35023943 PMCID: PMC8743621 DOI: 10.2147/jir.s341680] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 12/20/2021] [Indexed: 11/26/2022] Open
Abstract
Background Alcoholic liver disease (ALD) is liver damage caused by long-term drinking. Inflammation plays a central role in the progression of ALD. CD73 is a ubiquitously expressed glycosylphosphatidylinositol-anchored glycoprotein that is a key enzyme that converts ATP into adenosine. Evidence has shown that CD73 plays an important role in many diseases, but the role and mechanism of CD73 in alcohol-induced liver injury and inflammation is still unclear. Methods The alcohol-induced liver injury and inflammation mouse model was established. The rAAV9-CD73 was used to overexpress CD73. Isolation of primary macrophages (MΦ) from the liver was conducted. The effects of CD73 on alcohol-induced liver injury and inflammation were evaluated by quantitative real‑time PCR, Western blotting, ELISA, and immunohistochemical assay. Flow cytometry was used to detect the cell cycle and apoptosis. Results Our results showed that overexpression of CD73 can reduce alcohol-induced liver damage, lipid accumulation, and the secretion of inflammatory cytokines. pEX3-CD73 can promote RAW264.7 cells proliferation and inhibit apoptosis via suppressing the activation of TLR4/MyD88/NF-κB signaling pathway. Inhibition of TLR4 further enhanced the anti-inflammatory effect of overexpression of CD73. Conclusion Overexpression of CD73 can reduce alcohol-induced liver injury and inflammation. CD73 may serve as a potential therapeutic target for ALD.
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Affiliation(s)
- Zhen-Ni Liu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, People's Republic of China.,The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, Hefei, People's Republic of China.,Institute for Liver Diseases of Anhui Medical University, Hefei, People's Republic of China
| | - Xue Wu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, People's Republic of China.,The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, Hefei, People's Republic of China.,Institute for Liver Diseases of Anhui Medical University, Hefei, People's Republic of China
| | - Qian Fang
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, People's Republic of China.,The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, Hefei, People's Republic of China.,Institute for Liver Diseases of Anhui Medical University, Hefei, People's Republic of China
| | - Zi-Xuan Li
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, People's Republic of China.,The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, Hefei, People's Republic of China.,Institute for Liver Diseases of Anhui Medical University, Hefei, People's Republic of China
| | - Guo-Qing Xia
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, People's Republic of China.,The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, Hefei, People's Republic of China.,Institute for Liver Diseases of Anhui Medical University, Hefei, People's Republic of China
| | - Jun-Nan Cai
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, People's Republic of China.,The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, Hefei, People's Republic of China.,Institute for Liver Diseases of Anhui Medical University, Hefei, People's Republic of China
| | - Xiong-Wen Lv
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, People's Republic of China.,The Key Laboratory of Anti-Inflammatory and Immune Medicines, Ministry of Education, Hefei, People's Republic of China.,Institute for Liver Diseases of Anhui Medical University, Hefei, People's Republic of China
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12
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Yu S, Lu J. Macrophages in transplant rejection. Transpl Immunol 2022; 71:101536. [PMID: 35017096 DOI: 10.1016/j.trim.2022.101536] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 01/04/2022] [Accepted: 01/06/2022] [Indexed: 11/17/2022]
Abstract
Transplant rejection is one of the primary factors leading to loss of allograft function, and macrophages are involved in allograft rejection. Macrophages polarize into different phenotypes according to stimulation by different external factors. Different types of macrophages play distinct roles in inflammation, tumors, and autoimmune diseases and are involved in transplant rejection. In this review, we introduce the origin and migration of macrophages, outline the classification of macrophages and their polarization mechanisms, and review the currently understood mechanisms of their involvement in transplant rejection. Finally, we discuss the regulation of macrophage polarization and miRNA expression with respect to transplant rejection, which is important for the development of new anti-rejection therapies.
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Affiliation(s)
- Shaochen Yu
- Department of Emergency and Critical Care Medicine, Guangdong Second Provincial General Hospital, No. 466, Xingang Middle Road, Haizhu District, Guangzhou, Guangdong 510317, China.
| | - Jian Lu
- Department of Gastroenterology, The First Affiliated Hospital of Anhui Medical University, No. 218, Jixi Road, Shushan District, Hefei, Anhui 230022, China.
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13
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Preconditioned Mesenchymal Stromal Cells to Improve Allotransplantation Outcome. Cells 2021; 10:cells10092325. [PMID: 34571974 PMCID: PMC8469056 DOI: 10.3390/cells10092325] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 12/12/2022] Open
Abstract
Mesenchymal stromal cells (MSCs) are tissue-derived progenitor cells with immunomodulatory as well as multilineage differentiation capacities, and have been widely applied as cellular therapeutics in different disease systems in both preclinical models and clinical studies. Although many studies have applied MSCs in different types of allotransplantation, the efficacy varies. It has been demonstrated that preconditioning MSCs prior to in vivo administration may enhance their efficacy. In the field of organ/tissue allotransplantation, many recent studies have shown that preconditioning of MSCs with (1) pretreatment with bioactive factors or reagents such as cytokines, or (2) specific gene transfection, could prolong allotransplant survival and improve allotransplant function. Herein, we review these preconditioning strategies and discuss potential directions for further improvement.
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14
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Wang X, MacParland SA, Perciani CT. Immunological Determinants of Liver Transplant Outcomes Uncovered by the Rat Model. Transplantation 2021; 105:1944-1956. [PMID: 33417410 PMCID: PMC8376267 DOI: 10.1097/tp.0000000000003598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/12/2020] [Accepted: 11/14/2020] [Indexed: 02/07/2023]
Abstract
For many individuals with end-stage liver disease, the only treatment option is liver transplantation. However, liver transplant rejection is observed in 24%-80% of transplant patients and lifelong drug regimens that follow the transplant procedure lead to serious side effects. Furthermore, the pool of donor livers available for transplantation is far less than the demand. Well-characterized and physiologically relevant models of liver transplantation are crucial to a deeper understanding of the cellular processes governing the outcomes of liver transplantation and serve as a platform for testing new therapeutic strategies to enhance graft acceptance. Such a model has been found in the rat transplant model, which has an advantageous size for surgical procedures, similar postoperative immunological progression, and high genome match to the human liver. From rat liver transplant studies published in the last 5 years, it is clear that the rat model serves as a strong platform to elucidate transplant immunological mechanisms. Using the model, we have begun to uncover potential players and possible therapeutic targets to restore liver tolerance and preserve host immunocompetence. Here, we present an overview of recent literature for rat liver transplant models, with an aim to highlight the value of the models and to provide future perspectives on how these models could be further characterized to enhance the overall value of rat models to the field of liver transplantation.
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Affiliation(s)
- Xinle Wang
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Sonya A MacParland
- Department of Immunology, University of Toronto, Toronto, ON, Canada
- Ajmera Family Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Catia T Perciani
- Ajmera Family Transplant Centre, Toronto General Hospital Research Institute, Toronto, ON, Canada
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15
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Yu J, Li J, Shen J, Du F, Wu X, Li M, Chen Y, Cho CH, Li X, Xiao Z, Zhao Y. The role of Fibrinogen-like proteins in Cancer. Int J Biol Sci 2021; 17:1079-1087. [PMID: 33867830 PMCID: PMC8040309 DOI: 10.7150/ijbs.56748] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/23/2021] [Indexed: 12/13/2022] Open
Abstract
Fibrinogen-associated protein (FREP) family is a family of proteins with a fibrin domain at the carboxyl terminus. Recent investigations illustrated that two members of FREP family, fibrinogen-like protein-1 (FGL1) and fibrinogen-like protein-2 (FGL2), play crucial roles in cancer by regulating the proliferation, invasion, and migration of tumor cells, or regulating the functions of immune cells in tumor microenvironment. Meanwhile, they are potential targets for medical intervention of tumor development. In this review, we discussed the structure, and the roles of FGL1 and FGL2 in tumors, especially the roles in regulating immune cell functions.
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Affiliation(s)
- Jing Yu
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Jing Li
- Department of Oncology and Hematology, Hospital (T.C.M) Affiliated to Southwest Medical University, Luzhou, Sichuan, China
| | - Jing Shen
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Fukuan Du
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Xu Wu
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Mingxing Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Yu Chen
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Chi Hin Cho
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Xiaobing Li
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Zhangang Xiao
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China
| | - Yueshui Zhao
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China.,South Sichuan Institute of Translational Medicine, Luzhou, Sichuan, China.,Department of Pharmacy, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China
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16
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Zhang X, Ma J, Li H, Zhou L, Liu Z, Lyu S, He Q, Li X. Overexpression of fibrinogen-like protein 2 alleviates acute rejection in rat models of liver transplantation. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:408. [PMID: 33842629 PMCID: PMC8033335 DOI: 10.21037/atm-20-7881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Background The role of cluster of differentiation (CD)8+ regulatory T cells (Tregs) has previously been elucidated in tolerance models. Fibrinogen-like protein 2 (FGL2), that is secreted by Treg cells, which exhibited immunosuppressive functions, may alleviate acute rejection (AR). However, the precise role of CD8+ Tregs and FGL2 in the AR of rat liver transplantation remains unknown. Our previous study found that CD8+CD45RClow Tregs played crucial roles in maintaining immune tolerance. Here, we elucidated the role of CD8+ CD45RClowTreg and FGL2 in AR of rat liver transplantation. Methods A rat non-materialized AR of liver transplantation model was established using donors infected with no-load adeno-associated virus and adeno‐associated virus expressing FGL2. Results There was an accumulation of tolerogenic CD8+CD45RClow in allografts compared with blank groups. Moreover, the proportion of CD8+CD45RClow Tregs was increased with longer survival time. Furthermore, we detected higher levels of FGL2 in the allografts infected with AAV-FGL2 in rats with AR of liver transplantation. We found that FGL2 could alleviate AR, and the survival time was prolonged in the recipients of donors infected with AAV-FGL2. Conclusions Our data suggest that CD8+CD45RClow Tregs was accumulated in allografts. The presence of FGL2 alleviated AR and prolonged survival time in the AR of liver transplantation rat model, suggesting that FGL2 and CD8+CD45RClow Tregs may serves as novel therapeutic targets for AR in liver transplantation.
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Affiliation(s)
- Xinxue Zhang
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Jun Ma
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Han Li
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Lin Zhou
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Zhe Liu
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Shaocheng Lyu
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Qiang He
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Xianliang Li
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
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17
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Liu BQ, Bao ZY, Zhu JY, Liu H. Fibrinogen-like protein 2 promotes the accumulation of myeloid-derived suppressor cells in the hepatocellular carcinoma tumor microenvironment. Oncol Lett 2020; 21:47. [PMID: 33281958 PMCID: PMC7709556 DOI: 10.3892/ol.2020.12308] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/19/2020] [Indexed: 12/19/2022] Open
Abstract
The tumor microenvironment in hepatocellular carcinoma can be classified into cellular and non-cellular components. Myeloid-derived suppressor cells (MDSCs) are cellular components of this microenvironment that serve an important role in the progression of hepatocellular carcinoma. Fibrinogen-like protein 2 (FGL2) has been demonstrated to promote tumor progression by regulating cellular components of the tumor microenvironment in various types of malignant tumor. The present study aimed to determine the expression of FGL2 in hepatocellular carcinoma and its effect on the tumor microenvironment in order to determine novel targets for liver cancer treatment. Immunohistochemistry and reverse transcription quantitative PCR were performed to determine the expression level of FGL2 and the correlation with surface markers of human MDSCs in hepatocellular carcinoma. Furthermore, a mouse hepatocellular carcinoma cell line overexpressing FGL2 was established by stable transfection of a lentivirus expressing FGL2. In addition, fresh bone marrow cells extracted from mouse femurs were in vitro cultured using conditioned medium derived from the cell line overexpressing FGL2. An orthotopic hepatocellular carcinoma mouse model was also established. The results demonstrated that FGL2 expression level in hepatocellular carcinoma tissues was closely associated with tumor size. FGL2 level was positively correlated with the expression level of the MDSC surface markers CD11b and CD33 in hepatocellular carcinoma. The in vitro results demonstrated that FGL2 could maintain the undifferentiated state of bone marrow cells, therefore promoting MDSC accumulation. Furthermore, in the orthotopic hepatocellular carcinoma mouse model, we observed that overexpression of FGL2 could promote tumor growth and significantly increase the number of MDSCs in the tumors and spleen. Taken together, these findings suggested that FGL2 may promote hepatocellular carcinoma tumor growth by promoting the accumulation of MDSCs in the tumor microenvironment.
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Affiliation(s)
- Bo-Qian Liu
- Department of Transplant and Hepatobilliary Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110000, P.R. China.,Department of Anorectal Surgery, The People's Hospital of Liaoning Province, Shenyang, Liaoning 110000, P.R. China
| | - Zhi-Ye Bao
- Department of Transplant and Hepatobilliary Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110000, P.R. China
| | - Jia-Yi Zhu
- Department of Transplant and Hepatobilliary Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110000, P.R. China
| | - Hao Liu
- Department of Transplant and Hepatobilliary Surgery, The First Hospital of China Medical University, Shenyang, Liaoning 110000, P.R. China
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18
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Robineau-Charette P, Grynspan D, Benton SJ, Gaudet J, Cox BJ, Vanderhyden BC, Bainbridge SA. Fibrinogen-Like Protein 2-Associated Transcriptional and Histopathological Features of Immunological Preeclampsia. Hypertension 2020; 76:910-921. [PMID: 32713274 PMCID: PMC7418930 DOI: 10.1161/hypertensionaha.120.14807] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Preeclampsia is a multifactorial hypertensive disorder of pregnancy, with variable presentation in both maternal and fetal factors, such that no treatment or marker is currently universal to all cases. Here, we demonstrate that the prothrombinase and immunomodulatory secreted factor FGL-2 (fibrinogen-like protein 2) is differentially expressed across previously characterized gene expression clusters containing clinically relevant disease subtypes. FGL2 is low in a cluster consistent with the traditional paradigm of the pathology of preeclampsia (canonical preeclampsia) and high in a cluster exhibiting evidence of immune activation (immunological preeclampsia). We show that it is part of an immunoregulatory gene module integral to the transcriptional profile and placental pathology specific to immunological preeclampsia. We determine that FGL2 associates positively with chronic inflammation lesions of the placenta while associating negatively with maternal vascular malperfusion lesions. The transcriptional profiles of maternal vascular malperfusion lesions show downregulation of FGL2 and upregulation of previously investigated preeclampsia biomarkers, such as FLT1 (Fms Related Receptor Tyrosine Kinase 1) and ENG (endoglin). Conversely, the profiles of chronic inflammation lesions show an interesting downregulation of these genes, but an upregulation of FGL2 and of FGL2-correlated immunoregulatory genes, suggesting it is upregulated downstream of major inflammatory mediators such as TNF (tumor necrosis factor)-α and IFN (interferon)-γ, hallmarks of the immunological preeclampsia subtype. This work, overall, demonstrates that FGL-2 expression levels in the term placenta reflect the unique pathophysiology that leads to immunological preeclampsia, leading to its potential as a subtype-specific biomarker.
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Affiliation(s)
- Pascale Robineau-Charette
- From the Department of Cellular and Molecular Medicine (P.R.-C., S.J.B, B.C.V., S.A.B.), University of Ottawa, ON, Canada.,Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada (P.R.-C., B.C.V.)
| | - David Grynspan
- Department of Pathology and Laboratory Medicine (D.G.), University of Ottawa, ON, Canada
| | - Samantha J Benton
- From the Department of Cellular and Molecular Medicine (P.R.-C., S.J.B, B.C.V., S.A.B.), University of Ottawa, ON, Canada
| | - Jeremiah Gaudet
- Faculty of Medicine and Interdisciplinary School of Health Sciences, Faculty of Health Sciences (J.G., S.A.B.), University of Ottawa, ON, Canada
| | - Brian J Cox
- Department of Physiology (B.J.C.), Faculty of Medicine, University of Toronto, ON, Canada.,Department of Obstetrics and Gynecology (B.J.C.), Faculty of Medicine, University of Toronto, ON, Canada
| | - Barbara C Vanderhyden
- From the Department of Cellular and Molecular Medicine (P.R.-C., S.J.B, B.C.V., S.A.B.), University of Ottawa, ON, Canada.,Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada (P.R.-C., B.C.V.)
| | - Shannon A Bainbridge
- From the Department of Cellular and Molecular Medicine (P.R.-C., S.J.B, B.C.V., S.A.B.), University of Ottawa, ON, Canada.,Faculty of Medicine and Interdisciplinary School of Health Sciences, Faculty of Health Sciences (J.G., S.A.B.), University of Ottawa, ON, Canada
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19
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Ye L, He S, Mao X, Zhang Y, Cai Y, Li S. Effect of Hepatic Macrophage Polarization and Apoptosis on Liver Ischemia and Reperfusion Injury During Liver Transplantation. Front Immunol 2020; 11:1193. [PMID: 32676077 PMCID: PMC7333353 DOI: 10.3389/fimmu.2020.01193] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 05/13/2020] [Indexed: 12/21/2022] Open
Abstract
Ischemia-reperfusion (I/R) injury is injury caused by a limited blood supply and subsequent blood supply recovery during liver transplantation. Serious ischemia-reperfusion injury is the main cause of transplant failure. Hepatic I/R is characterized by tissue hypoxia due to a limited blood supply and reperfusion inducing oxidative stress and an immune response. Studies have confirmed that Kupffer cells (KCs), resident macrophages in the liver, play a key role in aseptic inflammation induced by I/R. In liver macrophage polarization, M1 macrophages activated by interferon-γ (IFN-γ) and lipopolysaccharide (LPS) exert a pro-inflammatory effect and release a variety of inflammatory cytokines. M2 macrophages activated by IL-4 have an anti-inflammatory response. M1-type KCs are the dominant players in I/R as they secrete various pro-inflammatory cytokines that exacerbate the injury and recruit other types of immune cells via the circulation. In contrast, M2-type KCs can ameliorate I/R through unregulated anti-inflammatory factors. A new notion has been proposed that KC apoptosis may influence I/R in yet another manner as well. Management of KCs is expected to help improve I/R. This review summarizes the effects of hepatic macrophage polarization and apoptosis on liver I/R.
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Affiliation(s)
- Liping Ye
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Saiqin He
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China.,Endoscopy Center, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Xinli Mao
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Yu Zhang
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Yue Cai
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Shaowei Li
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
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Gao C, Wang X, Lu J, Li Z, Jia H, Chen M, Chang Y, Liu Y, Li P, Zhang B, Du X, Qi F. Mesenchymal stem cells transfected with sFgl2 inhibit the acute rejection of heart transplantation in mice by regulating macrophage activation. Stem Cell Res Ther 2020; 11:241. [PMID: 32552823 PMCID: PMC7301524 DOI: 10.1186/s13287-020-01752-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/19/2020] [Accepted: 06/01/2020] [Indexed: 12/12/2022] Open
Abstract
Background Mesenchymal stem cells (MSCs) have become a promising candidate for cell-based immune therapy for acute rejection (AR) after heart transplantation due to possessing immunomodulatory properties. In this study, we evaluated the efficacy of soluble fibronectin-like protein 2 (sFgl2) overexpressing mesenchymal stem cells (sFgl2-MSCs) in inhibiting AR of heart transplantation in mice by regulating immune tolerance through inducing M2 phenotype macrophage polarization. Methods and results The sFgl2, a novel immunomodulatory factor secreted by regulatory T cells, was transfected into MSCs to enhance their immunosuppressive functions. After being co-cultured for 72 h, the sFgl2-MSCs inhibited M1 polarization whereas promoted M2 of polarization macrophages through STAT1 and NF-κB pathways in vitro. Besides, the sFgl2-MSCs significantly enhanced the migration and phagocytosis ability of macrophages stimulated with interferon-γ (IFN-γ) and lipopolysaccharide (LPS). Further, the application potential of sFgl2-MSCs in AR treatment was demonstrated by heterotopic cardiac transplantation in mice. The tissue damage and macrophage infiltration were evaluated by H&E and immunohistochemistry staining, and the secretion of inflammatory cytokines was analyzed by ELISA. The results showed that sFgl2-MSCs injected intravenously were able to locate in the graft, promote the M2 polarization of macrophages in vivo, regulate the local and systemic immune response, significantly protect tissues from damaging, and finally prolonged the survival time of mice heart grafts. Conclusion sFgl2-MSCs ameliorate AR of heart transplantation by regulating macrophages, which provides a new idea for the development of anti-AR treatment methods after heart transplantation.
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Affiliation(s)
- Chao Gao
- Department of General Surgery, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, 300052, China
| | - Xiaodong Wang
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Medical School of Zhejiang University, Hangzhou, 310003, Zhejiang province, China
| | - Jian Lu
- Department of General Surgery, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, 300052, China
| | - Zhilin Li
- Department of General Surgery, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, 300052, China
| | - Haowen Jia
- Department of General Surgery, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, 300052, China
| | - Minghao Chen
- Department of General Surgery, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, 300052, China
| | - Yuchen Chang
- Department of General Surgery, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, 300052, China
| | - Yanhong Liu
- Department of General Surgery, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, 300052, China
| | - Peiyuan Li
- Department of General Surgery, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, 300052, China
| | - Baotong Zhang
- Department of General Surgery, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, 300052, China
| | - Xuezhi Du
- Department of General Surgery, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Feng Qi
- Department of General Surgery, Tianjin Medical University General Hospital, No. 154 Anshan Road, Heping District, Tianjin, 300052, China. .,Tianjin General Surgery Institute, Tianjin, 300052, China.
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21
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Yang P, Zhang X, Lin Z, Wang Q, Guo D, Zhang P, Yang L, Zhang H, Ding R, Tao K, Li X, Dou K. Adoptive transfer of polarized M2c macrophages ameliorates acute rejection in rat liver transplantation. Am J Transl Res 2020; 12:2614-2626. [PMID: 32655794 PMCID: PMC7344085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 05/24/2020] [Indexed: 06/11/2023]
Abstract
Hepatic macrophages play pivotal roles in tolerance induction after liver transplantation (LT). However, macrophages possess functional heterogeneities, and the protective role of M2c macrophages, a macrophage subtype characterized by the surface marker CD163 that secretes interleukin-10 (IL-10) and transforming growth factor-β1 (TGF-β1), in acute rejection following LT, has not been addressed. The aim of this study was to determine whether polarized macrophages of the M2c subtype could improve outcomes after LT for rats, including survival rate, liver function, and inflammatory infiltration. In our study, the numbers of CD163-positive cells were found to be increased in tolerant liver grafts. Immediately following the surgery, M2c macrophages induced from rat bone marrow-derived cells were infused into recipients; this significantly improved survival rate and liver function. The expression levels of IL-10 and TGF-β1 were markedly increased in these rats compared to those in the control group. Furthermore, CD8+ T-cell infiltration was reduced, whereas the numbers of apoptotic cells increased, in rats treated with M2c. To explore the mechanisms of the protective role of M2c, the numbers of major histocompatibility complex (MHC) class II positive cells were found to be decreased and the expression of N-acetylglucosaminyltransferase V (MGAT5) was up-regulated in M2c infusion groups. Together, these findings demonstrate that polarization of macrophages towards the M2c phenotype ameliorated acute rejection in a rat LT model and may provide a novel and effective therapeutic approach for AR after transplantation.
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Affiliation(s)
- Peijun Yang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Xuan Zhang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Zhibin Lin
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Quancheng Wang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Dongnan Guo
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Pengcheng Zhang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Long Yang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Hong Zhang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Rui Ding
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Kaishan Tao
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Xiao Li
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University Xi'an, China
| | - Kefeng Dou
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University Xi'an, China
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22
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Wang J, Deng M, Wu H, Wang M, Gong J, Bai H, Wu Y, Pan J, Chen Y, Li S. Suberoylanilide hydroxamic acid alleviates orthotopic liver transplantation‑induced hepatic ischemia‑reperfusion injury by regulating the AKT/GSK3β/NF‑κB and AKT/mTOR pathways in rat Kupffer cells. Int J Mol Med 2020; 45:1875-1887. [PMID: 32236599 PMCID: PMC7169828 DOI: 10.3892/ijmm.2020.4551] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 03/06/2020] [Indexed: 12/26/2022] Open
Abstract
Multiple mechanisms are involved in regulating hepatic ischemia-reperfusion injury (IRI), in which Kupffer cells (KCs), which are liver-resident macrophages, play critical roles by regulating inflammation and the immune response. Suberoylanilide hydroxamic acid (SAHA), a pan-histone deacetylase inhibitor, has anti-inflammatory effects and induces autophagy. To investigate whether SAHA ameliorates IRI and the mechanisms by which SAHA exerts its effects, an orthotopic liver transplantation (OLT) rat model was established after treatment with SAHA. The results showed that SAHA effectively ameliorated OLT-induced IRI by reducing M1 polarization of KCs through inhibition of the AKT/glycogen synthase kinase (GSK)3β/NF-κB signaling pathway. Furthermore, the present study found that SAHA upregulates autophagy 5 protein (ATG5)/LC3B in KCs through the AKT/mTOR signaling pathway and inhibition of autophagy by knockdown of ATG5 in KCs partly impaired the protective effect of SAHA on IR-injured liver. Therefore, the current study demonstrated that SAHA reduces M1 polarization of KCs by inhibiting the AKT/GSK3β/NF-κB pathway and upregulates autophagy in KCs through the AKT/mTOR signaling pathway, which both alleviate OLT-induced IRI. The present study revealed that SAHA may be a novel treatment for the amelioration of OLT-induced IRI.
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Affiliation(s)
- Jingyuan Wang
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Minghua Deng
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Hao Wu
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Menghao Wang
- 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
| | - He Bai
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
| | - Yakun Wu
- Department of Hepatobiliary Surgery, Suining Central Hospital, Suining, Sichuan 629000, P.R. China
| | - Junjiang Pan
- Department of General Surgery, Second People's Hospital of Yibin City, Yibin, Sichuan 644000, P.R. China
| | - Yong Chen
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, P.R. China
| | - Shengwei Li
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
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Wang Z, Zhang X, Zhu L, Yang X, He F, Wang T, Bao T, Lu H, Wang H, Yang S. Inulin alleviates inflammation of alcoholic liver disease via SCFAs-inducing suppression of M1 and facilitation of M2 macrophages in mice. Int Immunopharmacol 2019; 78:106062. [PMID: 31830621 DOI: 10.1016/j.intimp.2019.106062] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/14/2019] [Accepted: 11/14/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND Alcoholic liver disease (ALD) presents one of the leading causes of cirrhosis worldwide. We have demonstrated that inulin alleviates ALD in mice. However, the exact role of hepatic macrophages in effects of inulin on ALD remains largely unclear. METHODS In vivo, mice were divided into 4 groups: pair-fed (PF) group (PF/CON), alcohol-fed (AF) group (AF/CON), PF with inulin (INU) group (PF/INU) and AF with INU group (AF/INU). Each group was fed modified Lieber-DeCarli liquid diet with or without alcohol. In vitro, RAW264.7 cell lines were polarized to M1 macrophage (Mψ) or M2 Mψ subsets with lipopolysaccharide (LPS) or interleukin-4 (IL-4) stimulation, respectively. The effects of propionate, butyrate and valeric on macrophage M1/M2 were investigated. RESULTS The contents of propionate, butyrate and valeric were significantly increased in AF/INU group compared with that in the AF/CON group. M1 Mψ, inducible nitric oxide synthase (iNOS) and tumor necrosis factor-α (TNF-α) in AF/INU group were significantly lower than those in AF/CON group. In contrast, M2 Mψ, arginase-1 (Arg-1), and interleukin-10 (IL-10) were notably increased in AF/INU group. In vitro, sodium propionate, sodium butyrate and sodium valerate can suppress M1 Mψ and increase M2 Mψ polarization. CONCLUSION In ALD, inulin ameliorates the inflammation via SCFAs-inducing suppression of M1 and facilitation of M2 Mψ, which may potentially contribute to the control of the disease.
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Affiliation(s)
- Zhen Wang
- Clinical Medical College, Ningxia Medical University, Yinchuan 750004, Ningxia, China; Department of Gastroenterology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Xiaoxia Zhang
- College of Traditional Chinese Medicine, Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Lili Zhu
- Department of Pathogenic Biology and Medical Immunology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Xiaoli Yang
- Clinical Medical College, Ningxia Medical University, Yinchuan 750004, Ningxia, China
| | - Fang He
- Department of Gastroenterology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Ting Wang
- Department of Pathogenic Biology and Medical Immunology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, Ningxia 750004, China
| | - Ting Bao
- Clinical Medical College, Ningxia Medical University, Yinchuan 750004, Ningxia, China
| | - Haixia Lu
- Clinical Medical College, Ningxia Medical University, Yinchuan 750004, Ningxia, China
| | - Hao Wang
- Department of Pathogenic Biology and Medical Immunology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, Ningxia 750004, China.
| | - Shaoqi Yang
- Department of Gastroenterology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China.
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Zhangdi HJ, Su SB, Wang F, Liang ZY, Yan YD, Qin SY, Jiang HX. Crosstalk network among multiple inflammatory mediators in liver fibrosis. World J Gastroenterol 2019; 25:4835-4849. [PMID: 31543677 PMCID: PMC6737310 DOI: 10.3748/wjg.v25.i33.4835] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 07/24/2019] [Accepted: 08/07/2019] [Indexed: 02/06/2023] Open
Abstract
Liver fibrosis is the common pathological basis of all chronic liver diseases, and is the necessary stage for the progression of chronic liver disease to cirrhosis. As one of pathogenic factors, inflammation plays a predominant role in liver fibrosis via communication and interaction between inflammatory cells, cytokines, and the related signaling pathways. Damaged hepatocytes induce an increase in pro-inflammatory factors, thereby inducing the development of inflammation. In addition, it has been reported that inflammatory response related signaling pathway is the main signal transduction pathway for the development of liver fibrosis. The crosstalk regulatory network leads to hepatic stellate cell activation and proinflammatory cytokine production, which in turn initiate the fibrotic response. Compared with the past, the research on the pathogenesis of liver fibrosis has been greatly developed. However, the liver fibrosis mechanism is complex and many pathways involved need to be further studied. This review mainly focuses on the crosstalk regulatory network among inflammatory cells, cytokines, and the related signaling pathways in the pathogenesis of chronic inflammatory liver diseases. Moreover, we also summarize the recent studies on the mechanisms underlying liver fibrosis and clinical efforts on the targeted therapies against the fibrotic response.
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Affiliation(s)
- Han-Jing Zhangdi
- Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Si-Biao Su
- Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Fei Wang
- Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Zi-Yu Liang
- Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Yu-Dong Yan
- Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Shan-Yu Qin
- Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Hai-Xing Jiang
- Department of Gastroenterology, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
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25
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Pan G, Zhao Z, Tang C, Ding L, Li Z, Zheng D, Zong L, Wu Z. Soluble fibrinogen-like protein 2 ameliorates acute rejection of liver transplantation in rat via inducing Kupffer cells M2 polarization. Cancer Med 2018; 7:3168-3177. [PMID: 29749104 PMCID: PMC6051168 DOI: 10.1002/cam4.1528] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 04/05/2018] [Accepted: 04/05/2018] [Indexed: 02/06/2023] Open
Abstract
Soluble fibrinogen-like protein 2 (sFGL2) could ameliorate acute rejection (AR) in rat cardiac transplantation. However, the role of sFGL2 in AR of liver transplantation has not been addressed. In this study, we found that FGL2 was upregulated in rat orthotropic liver transplantation (OLT) models of tolerance and positive correlation with the frequency of M2 Kupffer cells (KCs). Gain-of-function experiments in vitro showed that sFGL2 promoted the secretion of anti-inflammatory cytokines (IL-10, TGF-β) and the expression of CD206, and inhibited the activities of STAT1 and NF-κB signaling pathway. Consistently, in vivo assays showed that adeno-associated virus-mediated FGL2 (AAV-FGL2) transfer to recipients could ameliorate AR of rat OLT and induce KCs M2 polarization in allografts. Notably, we found that the recipients receiving transferred KCs from AAV-FGL2-treated allograft showed alleviated AR. Taken together, we revealed that sFGL2 ameliorated AR by inducing KCs M2 polarization.
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Affiliation(s)
- Guangrui Pan
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Zhengfei Zhao
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Chengyong Tang
- Department of Clinical PharmacologyThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Liuyue Ding
- Medical Research CenterSu Bei People's Hospital of Jiangsu ProvinceYangzhou UniversityYangzhouChina
- Department of SurgerySu Bei People's Hospital of Jiangsu ProvinceYangzhou UniversityYangzhouChina
| | - Zhongtang Li
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Daofeng Zheng
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Liang Zong
- Medical Research CenterSu Bei People's Hospital of Jiangsu ProvinceYangzhou UniversityYangzhouChina
- Department of SurgerySu Bei People's Hospital of Jiangsu ProvinceYangzhou UniversityYangzhouChina
| | - Zhongjun Wu
- Department of Hepatobiliary SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
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