1
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Mendoza M, Ballesteros A, Rendon-Correa E, Tonk R, Warren J, Snow AL, Stowell SR, Blois SM, Dveksler G. Modulation of galectin-9 mediated responses in monocytes and T-cells by pregnancy-specific glycoprotein 1. J Biol Chem 2024:107638. [PMID: 39121996 DOI: 10.1016/j.jbc.2024.107638] [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: 05/20/2024] [Revised: 07/16/2024] [Accepted: 07/18/2024] [Indexed: 08/12/2024] Open
Abstract
Successful pregnancy relies on a coordinated interplay between endocrine, immune, and metabolic processes to sustain fetal growth and development. The orchestration of these processes involves multiple signaling pathways driving cell proliferation, differentiation, angiogenesis, and immune regulation necessary for a healthy pregnancy. Among the molecules supporting placental development and maternal tolerance, the families of pregnancy-specific glycoproteins and galectins are of great interest in reproductive biology. We previously found that PSG1 can bind to galectin-1 (GAL-1). Herein, we characterized the interaction between PSG1 and other members of the galectin family expressed during pregnancy, including galectin-3, -7, -9, and -13 (GAL-3, GAL-7, GAL-9, and GAL-13). We observed that PSG1 binds to GAL-1, -3, and -9, with the highest apparent affinity seen for GAL-9, and that the interaction of PSG1 with GAL-9 is carbohydrate-dependent. We further investigated the ability of PSG1 to regulate GAL-9 responses in human monocytes, a murine macrophage cell line, and T-cells, and determined whether PSG1 binds to both carbohydrate recognition domains of GAL-9. Additionally, we compared the apparent affinity of GAL-9 binding to PSG1 with other known GAL-9 ligands in these cells, Tim-3 and CD44. Lastly, we explored functional conservation between murine and human PSGs by determining that Psg23, a highly expressed member of the murine Psg family, can bind some murine galectins despite differences in amino acid composition and domain structure.
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Affiliation(s)
- Mirian Mendoza
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Angela Ballesteros
- Section on Sensory Physiology and Biophysics, National Institute on Deafness and other Communication Disorders, National Institutes of Health, Bethesda, MD 20892, USA
| | - Elizabeth Rendon-Correa
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Rohan Tonk
- Section on Sensory Physiology and Biophysics, National Institute on Deafness and other Communication Disorders, National Institutes of Health, Bethesda, MD 20892, USA
| | - James Warren
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Andrew L Snow
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Sean R Stowell
- Department of Pathology, Brigham and Women's Hospital, Boston MA 02115, USA
| | - Sandra M Blois
- Department of Obstetrics and Fetal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.; Glyco-HAM, a cooperation of Universität Hamburg, Technology Platform Mass Spectrometry and University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gabriela Dveksler
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA.
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2
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Tian H, Liu Q, Yu X, Cao Y, Huang X. Damage-associated molecular patterns in viral infection: potential therapeutic targets. Crit Rev Microbiol 2024:1-18. [PMID: 39091137 DOI: 10.1080/1040841x.2024.2384885] [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: 12/26/2023] [Revised: 05/25/2024] [Accepted: 07/22/2024] [Indexed: 08/04/2024]
Abstract
Frequent viral infections leading to infectious disease outbreaks have become a significant global health concern. Fully elucidating the molecular mechanisms of the immune response against viral infections is crucial for epidemic prevention and control. The innate immune response, the host's primary defense against viral infection, plays a pivotal role and has become a breakthrough in research mechanisms. A component of the innate immune system, damage-associated molecular patterns (DAMPs) are involved in inducing inflammatory responses to viral infections. Numerous DAMPs are released from virally infected cells, activating downstream signaling pathways via internal and external receptors on immune cells. This activation triggers immune responses and helps regulate viral host invasion. This review examines the immune regulatory mechanisms of various DAMPs, such as the S100 protein family, high mobility group box 1 (HMGB1), and heat shock proteins, in various viral infections to provide a theoretical basis for designing novel antiviral drugs.
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Affiliation(s)
- Huizhen Tian
- School of Basic Medical Sciences, Jiangxi medical College, Nanchang University, Nanchang, China
| | - Qiong Liu
- School of Basic Medical Sciences, Jiangxi medical College, Nanchang University, Nanchang, China
| | - Xiaomin Yu
- School of Basic Medical Sciences, Jiangxi medical College, Nanchang University, Nanchang, China
- Medical Experimental Teaching Center, School of Basic Medical Sciences, School of Pharmacy, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Yanli Cao
- School of Basic Medical Sciences, Jiangxi medical College, Nanchang University, Nanchang, China
| | - Xiaotian Huang
- School of Basic Medical Sciences, Jiangxi medical College, Nanchang University, Nanchang, China
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3
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Nieves-Rosado HM, Jacobs JL, Naqvi A, Mellors JW, Macatangay BJC, Kane LP. TIM-3 signaling contributes to the suppressive capacity of Tregs from people with HIV on antiretroviral therapy. J Leukoc Biol 2023; 114:368-372. [PMID: 37350502 PMCID: PMC10882646 DOI: 10.1093/jleuko/qiad068] [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: 11/12/2022] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 06/24/2023] Open
Abstract
TIM-3 expression is increased on peripheral regulatory T cells (Tregs) of virally suppressed persons with HIV-1 on antiretroviral therapy (PWH-ART). However, the relevance of TIM-3 expression in this setting is unclear. We used flow cytometry to evaluate the suppressive phenotype and signaling pathways in peripheral TIM-3- vs TIM-3+ Tregs in PWH-ART. TIM-3+ Tregs showed increased expression of IL-10 compared with persons without HIV-1. In addition, TIM-3+ Tregs displayed elevated signaling and activation, relative to TIM-3- Tregs from the same PWH-ART. Dramatically, TIM-3 blockade restrained the in vitro suppressive capacity of peripheral Tregs. Therefore, our data demonstrate not only that TIM-3 expression by Tregs is associated with an immunosuppressive response among PWH-ART, but also that TIM-3 contributes directly to the enhanced suppressive activity of Tregs in this setting.
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Affiliation(s)
- Hector M Nieves-Rosado
- Program in Microbiology and Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, United States
| | - Jana L Jacobs
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, United States
| | - Asma Naqvi
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, United States
| | - John W Mellors
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, United States
| | - Bernard J C Macatangay
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, United States
| | - Lawrence P Kane
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, United States
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4
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Lopez-Scarim J, Nambiar SM, Billerbeck E. Studying T Cell Responses to Hepatotropic Viruses in the Liver Microenvironment. Vaccines (Basel) 2023; 11:681. [PMID: 36992265 PMCID: PMC10056334 DOI: 10.3390/vaccines11030681] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 03/19/2023] Open
Abstract
T cells play an important role in the clearance of hepatotropic viruses but may also cause liver injury and contribute to disease progression in chronic hepatitis B and C virus infections which affect millions of people worldwide. The liver provides a unique microenvironment of immunological tolerance and hepatic immune regulation can modulate the functional properties of T cell subsets and influence the outcome of a virus infection. Extensive research over the last years has advanced our understanding of hepatic conventional CD4+ and CD8+ T cells and unconventional T cell subsets and their functions in the liver environment during acute and chronic viral infections. The recent development of new small animal models and technological advances should further increase our knowledge of hepatic immunological mechanisms. Here we provide an overview of the existing models to study hepatic T cells and review the current knowledge about the distinct roles of heterogeneous T cell populations during acute and chronic viral hepatitis.
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Affiliation(s)
| | | | - Eva Billerbeck
- Division of Hepatology, Department of Medicine and Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
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5
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Ayechu-Muruzabal V, Poelmann B, Berends AJ, Kettelarij N, Garssen J, van’t Land B, Willemsen LEM. Human Milk Oligosaccharide 2'-Fucosyllactose Modulates Local Viral Immune Defense by Supporting the Regulatory Functions of Intestinal Epithelial and Immune Cells. Int J Mol Sci 2022; 23:ijms231810958. [PMID: 36142892 PMCID: PMC9506168 DOI: 10.3390/ijms231810958] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
Human milk contains bioactive components that provide protection against viral infections in early life. In particular, intestinal epithelial cells (IEC) have key regulatory roles in the prevention of enteric viral infections. Here we established an in vitro model to study the modulation of host responses against enteric viruses mimicked by poly I:C (pIC). The effects of 2′-fucosyllactose (2′FL), abundantly present in human milk, were studied on IEC and/or innate immune cells, and the subsequent functional response of the adaptive immune cells. IEC were pre-incubated with 2′FL and stimulated with naked or Lyovec™-complexed pIC (LV-pIC). Additionally, monocyte-derived dendritic cells (moDC) alone or in co-culture with IEC were stimulated with LV-pIC. Then, conditioned-moDC were co-cultured with naïve CD4+ T helper (Th)-cells. IEC stimulation with naked or LV-pIC promoted pro-inflammatory IL-8, CCL20, GROα and CXCL10 cytokine secretion. However, only exposure to LV-pIC additionally induced IFNβ, IFNλ1 and CCL5 secretion. Pre-incubation with 2′FL further increased pIC induced CCL20 secretion and LV-pIC induced CXCL10 secretion. LV-pIC-exposed IEC/moDC and moDC cultures showed increased secretion of IL-8, GROα, IFNλ1 and CXCL10, and in the presence of 2′FL galectin-4 and -9 were increased. The LV-pIC-exposed moDC showed a more pronounced secretion of CCL20, CXCL10 and CCL5. The moDC from IEC/moDC cultures did not drive T-cell development in moDC/T-cell cultures, while moDC directly exposed to LV-pIC secreted Th1 driving IL-12p70 and promoted IFNγ secretion by Th-cells. Hereby, a novel intestinal model was established to study mucosal host-defense upon a viral trigger. IEC may support intestinal homeostasis, regulating local viral defense which may be modulated by 2′FL. These results provide insights regarding the protective capacity of human milk components in early life.
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Affiliation(s)
- Veronica Ayechu-Muruzabal
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Bente Poelmann
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Alinda J. Berends
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | | | - Johan Garssen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands
| | - Belinda van’t Land
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands
- Center for Translational Immunology, The Wilhelmina Children’s Hospital, University Medical Center Utrecht, 3584 EA Utrecht, The Netherlands
| | - Linette E. M. Willemsen
- Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
- Correspondence:
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6
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Wu X, Xu X, Xiang Y, Fan D, An Q, Yue G, Jin Z, Ding J, Hu Y, Du Q, Xu J, Xie R. Exosome-mediated effects and applications in inflammatory diseases of the digestive system. Eur J Med Res 2022; 27:163. [PMID: 36045437 PMCID: PMC9429695 DOI: 10.1186/s40001-022-00792-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 08/17/2022] [Indexed: 11/24/2022] Open
Abstract
Exosomes are membranous vesicles containing RNA and proteins that are specifically secreted in vivo. Exosomes have many functions, such as material transport and signal transduction between cells. Many studies have proven that exosomes can not only be used as biomarkers for disease diagnosis but also as carriers to transmit information between cells. Exosomes participate in a variety of physiological and pathological processes, including the immune response, antigen presentation, cell migration, cell differentiation, and tumour development. Differences in exosome functions depend on cell type. In recent years, exosome origin, cargo composition, and precise regulatory mechanisms have been the focus of research. Although exosomes have been extensively reported in digestive tumours, few articles have reviewed their roles in inflammatory diseases of the digestive system, especially inflammatory-related diseases (such as reflux oesophagitis, gastritis, inflammatory bowel disease, hepatitis, and pancreatitis). This paper briefly summarizes the roles of exosomes in inflammatory diseases of the digestive system to provide a basis for research on the mechanism of inflammatory diseases of the digestive system targeted by exosomes.
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Affiliation(s)
- Xianli Wu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.,The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Xiaolin Xu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.,The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Yiwei Xiang
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.,The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Dongdong Fan
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.,The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Qiming An
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.,The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Gengyu Yue
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.,The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Zhe Jin
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.,The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Jianhong Ding
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.,The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Yanxia Hu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.,The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Qian Du
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China.,The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China
| | - Jingyu Xu
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China. .,The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China.
| | - Rui Xie
- Department of Gastroenterology, Digestive Disease Hospital, Affiliated Hospital of Zunyi Medical University, Zunyi, China. .,The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, China.
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7
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Loghry HJ, Sondjaja NA, Minkler SJ, Kimber MJ. Secreted filarial nematode galectins modulate host immune cells. Front Immunol 2022; 13:952104. [PMID: 36032131 PMCID: PMC9402972 DOI: 10.3389/fimmu.2022.952104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/21/2022] [Indexed: 11/17/2022] Open
Abstract
Lymphatic filariasis (LF) is a mosquito-borne disease caused by filarial nematodes including Brugia malayi. Over 860 million people worldwide are infected or at risk of infection in 72 endemic countries. The absence of a protective vaccine means that current control strategies rely on mass drug administration programs that utilize inadequate drugs that cannot effectively kill adult parasites, thus established infections are incurable. Progress to address deficiencies in the approach to LF control is hindered by a poor mechanistic understanding of host-parasite interactions, including mechanisms of host immunomodulation by the parasite, a critical adaptation for establishing and maintaining infections. The canonical type 2 host response to helminth infection characterized by anti-inflammatory and regulatory immune phenotypes is modified by filarial nematodes during chronic LF. Current efforts at identifying parasite-derived factors driving this modification focus on parasite excretory-secretory products (ESP), including extracellular vesicles (EVs). We have previously profiled the cargo of B. malayi EVs and identified B. malayi galectin-1 and galectin-2 as among the most abundant EV proteins. In this study we further investigated the function of these proteins. Sequence analysis of the parasite galectins revealed highest homology to mammalian galectin-9 and functional characterization identified similar substrate affinities consistent with this designation. Immunological assays showed that Bma-LEC-2 is a bioactive protein that can polarize macrophages to an alternatively activated phenotype and selectively induce apoptosis in Th1 cells. Our data shows that an abundantly secreted parasite galectin is immunomodulatory and induces phenotypes consistent with the modified type 2 response characteristic of chronic LF infection.
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8
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Lv B, Wang Y, Ma D, Cheng W, Liu J, Yong T, Chen H, Wang C. Immunotherapy: Reshape the Tumor Immune Microenvironment. Front Immunol 2022; 13:844142. [PMID: 35874717 PMCID: PMC9299092 DOI: 10.3389/fimmu.2022.844142] [Citation(s) in RCA: 99] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 06/13/2022] [Indexed: 12/12/2022] Open
Abstract
Tumor immune microenvironment (TIME) include tumor cells, immune cells, cytokines, etc. The interactions between these components, which are divided into anti-tumor and pro-tumor, determine the trend of anti-tumor immunity. Although the immune system can eliminate tumor through the cancer-immune cycle, tumors appear to eventually evade from immune surveillance by shaping an immunosuppressive microenvironment. Immunotherapy reshapes the TIME and restores the tumor killing ability of anti-tumor immune cells. Herein, we review the function of immune cells within the TIME and discuss the contribution of current mainstream immunotherapeutic approaches to remolding the TIME. Changes in the immune microenvironment in different forms under the intervention of immunotherapy can shed light on better combination treatment strategies.
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Affiliation(s)
- Bingzhe Lv
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Yunpeng Wang
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Dongjiang Ma
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Wei Cheng
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Jie Liu
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Tao Yong
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou, China.,The Second Clinical Medical College, Lanzhou University, Lanzhou, China
| | - Hao Chen
- Key Laboratory of Digestive System Tumors of Gansu Province, Lanzhou University Second Hospital, Lanzhou, China.,Department of Surgical Oncology, Lanzhou University Second Hospital, Lanzhou, China
| | - Chen Wang
- Department of General Surgery, Lanzhou University Second Hospital, Lanzhou, China.,Key Laboratory of Digestive System Tumors of Gansu Province, Lanzhou University Second Hospital, Lanzhou, China
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9
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Aslanian-Kalkhoran L, Esparvarinha M, Nickho H, Aghebati-Maleki L, Heris JA, Danaii S, Yousefi M. Understanding main pregnancy complications through animal models. J Reprod Immunol 2022; 153:103676. [PMID: 35914401 DOI: 10.1016/j.jri.2022.103676] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 06/27/2022] [Accepted: 07/21/2022] [Indexed: 10/16/2022]
Abstract
Since human pregnancy is an inefficient process, achieving desired and pleasant outcome of pregnancy - the birth of a healthy and fit baby - is the main goal in any pregnancy. Spontaneous pregnancy failure is actually the most common complication of pregnancy and Most of these pregnancy losses are not known. Animal models have been utilized widely to investigate the system of natural biological adaptation to pregnancy along with increasing our comprehension of the most important hereditary and non-hereditary factors that contribute to pregnancy disorders. We use model organisms because their complexity better reproduces the human condition. A useful animal model for the disease should be pathologically similar to the disease conditions in humans. Animal models deserve a place in research because of the ethical limitations that apply to pregnant women's experiments. The present review provides insights into the overall risk factors involved in recurrent miscarriage, recurrent implant failure and preeclampsia and animal models developed to help researchers identify the source of miscarriage and the best research and treatment strategy for women with Repeated miscarriage and implant failure.
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Affiliation(s)
- Lida Aslanian-Kalkhoran
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran; Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran
| | - Mojgan Esparvarinha
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran; Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran
| | - Hamid Nickho
- Department of Immuunology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran; Immunology Research Center, Institute of Immunology and Infectious Diseases, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Leili Aghebati-Maleki
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran
| | - Javad Ahmadian Heris
- Department of Allergy and Clinical Immunology, Pediatric Hospital, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran
| | - Shahla Danaii
- Gynecology Department, Eastern Azerbaijan ACECR ART Centre, Eastern Azerbaijan Branch of ACECR, Tabriz, Islamic Republic of Iran
| | - Mehdi Yousefi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran.
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10
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Wang C, Liu J, Yan Y, Tan Y. Role of Exosomes in Chronic Liver Disease Development and Their Potential Clinical Applications. J Immunol Res 2022; 2022:1695802. [PMID: 35571570 PMCID: PMC9106457 DOI: 10.1155/2022/1695802] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/02/2022] [Accepted: 04/18/2022] [Indexed: 12/11/2022] Open
Abstract
Extracellular vesicles (EVs) are vesicular bodies (40-1000 nm) with double-layer membrane structures released by different cell types into extracellular environments, including apoptosis bodies, microvesicles, and exosomes. Exosomes (30-100 nm) are vesicles enclosed by extracellular membrane and contain effective molecules of secretory cells. They are derived from intracellular multivesicular bodies (MVBs) that fuse with the plasma membrane and release their intracellular vesicles by exocytosis. Research has shown that almost all human cells could secrete exosomes, which have a certain relationship with corresponding diseases. In chronic liver diseases, exosomes release a variety of bioactive components into extracellular spaces, mediating intercellular signal transduction and materials transport. Moreover, exosomes play a role in the diagnosis, treatment, and prognosis of various chronic liver diseases as potential biomarkers and therapeutic targets. Previous studies have found that mesenchymal stem cell-derived exosomes (MSC-ex) could alleviate acute and chronic liver injury and have the advantages of high biocompatibility and low immunogenicity. In this paper, we briefly summarize the role of exosomes in the pathogenesis of different chronic liver diseases and the latest research progresses of MSC-ex as the clinical therapeutic targets.
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Affiliation(s)
- Chen Wang
- The Third Hospital of Zhenjiang Affiliated Jiangsu University, Jiangsu University, Zhenjiang, 212005 Jiangsu, China
- School of Medicine, Jiangsu University, Zhenjiang, 212013 Jiangsu, China
| | - Jinwen Liu
- School of Medicine, Jiangsu University, Zhenjiang, 212013 Jiangsu, China
| | - Yongmin Yan
- School of Medicine, Jiangsu University, Zhenjiang, 212013 Jiangsu, China
| | - Youwen Tan
- The Third Hospital of Zhenjiang Affiliated Jiangsu University, Jiangsu University, Zhenjiang, 212005 Jiangsu, China
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11
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Zhou H, Yan ZH, Yuan Y, Xing C, Jiang N. The Role of Exosomes in Viral Hepatitis and Its Associated Liver Diseases. Front Med (Lausanne) 2021; 8:782485. [PMID: 34881274 PMCID: PMC8645545 DOI: 10.3389/fmed.2021.782485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 10/29/2021] [Indexed: 12/13/2022] Open
Abstract
Exosomes, the important carriers between cells, can carry proteins, micro ribonucleic acids (miRNAs), long non-coding RNAs (lncRNAs) and other molecules to mediate cellular information transduction. They also play an important role in the pathogenesis, prognosis and treatment of viral hepatitis and its associated liver diseases. Several studies have reported that viral hepatitis and its associated liver diseases, including hepatitis A, B, C and E; hepatic fibrosis and hepatocellular carcinoma, were closely associated with exosomes. Exploring the role of exosomes in viral hepatitis and associated liver diseases will enhance our understanding of these diseases. Therefore, this review mainly summarised the role of exosomes in viral hepatitis and its associated liver diseases to identify new strategies for liver diseases in clinical practise.
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Affiliation(s)
- Hao Zhou
- Affiliated Hangzhou Chest Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhi-Han Yan
- Department of Hepatology, Wuxi Fifth People's Hospital, Wuxi, China
| | - Yuan Yuan
- Affiliated Hangzhou Chest Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chen Xing
- Department of Oncology, The Second People's Hospital of Yancheng City, Yancheng, China
| | - Nan Jiang
- Department of Urology, People's Hospital of Dongtai City, Dongtai, China
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12
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Wang H, Zhao Y, Ren B, Qin Y, Li G, Kong D, Qin H, Hao J, Sun D, Wang H. Endometrial regenerative cells with galectin-9 high-expression attenuate experimental autoimmune hepatitis. Stem Cell Res Ther 2021; 12:541. [PMID: 34654474 PMCID: PMC8518235 DOI: 10.1186/s13287-021-02604-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 09/23/2021] [Indexed: 12/15/2022] Open
Abstract
Background Autoimmune hepatitis (AIH) is a T cell-mediated immune disease that activates abnormally against hepatic antigens. We have previously reported that endometrial regenerative cells (ERCs) were a novel source of adult stem cells, which exhibiting with powerful immunomodulatory effects. Galectin-9 (Gal-9) is expressed in ERCs and plays an important role in regulating T cell response. This study aims to explore the role of ERCs in attenuation of AIH and to determine the potential mechanism of Gal-9 in ERC-mediated immune regulation. Methods ERCs were obtained from menstrual blood of healthy female volunteers. In vitro, ERCs were transfected with lentivirus vectors carrying LGALS9 gene and encoding green fluoresce protein (GFP-Gal-9-LVs) at a MOI 50, Gal-9 expression in ERCs was detected by ELISA and Q-PCR. CD4+ T cells isolated from C57BL/6 mouse spleen were co-cultured with ERCs. The proliferation of CD4+ T cells was detected by CCK-8 kit and the level of Lck/zap-70/LAT protein was measured by western blot. Furthermore, AIH was induced by ConA in C57BL/6 mice which were randomly assigned to untreated, unmodified ERC-treated and Gal-9 high-expressing ERC-treated groups. Histopathological score, liver function, CD4+/CD8+ cell infiltration in liver tissues, the proportion of immune cells in the spleen and liver, and ERC tracking were performed accordingly to assess the progression degree of AIH. Results After transfecting with GFP-Gal-9-LVs, Gal-9 expression in ERCs was significantly increased. Additionally, Gal-9 high-expressing ERCs effectively inhibited CD4+ T cell proliferation and downregulated CD4+ T cell active related proteins p-Lck/p-ZAP70/p-LAT in vitro. Furthermore, treatment with Gal-9 high-expressing ERCs restored liver function, ameliorated liver pathological damage, inhibit CD4+ and CD8+ T cell proliferation and suppress Th1 and Th17 cell response in the hepatitis mice. In addition, Gal-9 high-expressing ERCs further markedly enhanced the level of IL-10 but reduced the levels of IFN-γ, TNF-α, and IL-4 in mouse sera and liver. Cell tracking also showed that ERCs could migrate to the damaged liver organs. Conclusions The results suggested that Gal-9 was an essential modulator, which was required by ERCs in regulating T cell response and attenuating ConA-induced experimental hepatitis. And also, it provides a novel idea for the clinical treatment of AIH.
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Affiliation(s)
- Hongda Wang
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, China
| | - Yiming Zhao
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, China.,Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bingbing Ren
- Department of Pediatric Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Yafei Qin
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, China
| | - Guangming Li
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, China
| | - Dejun Kong
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, China
| | - Hong Qin
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China.,Tianjin General Surgery Institute, Tianjin, China
| | - Jingpeng Hao
- Tianjin General Surgery Institute, Tianjin, China.,Department of Anorectal Surgery, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Daqing Sun
- Department of Pediatric Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China.
| | - Hao Wang
- Department of General Surgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China. .,Tianjin General Surgery Institute, Tianjin, China.
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Chen Z, Dong D, Zhu Y, Pang N, Ding J. The role of Tim-3/Galectin-9 pathway in T-cell function and prognosis of patients with human papilloma virus-associated cervical carcinoma. FASEB J 2021; 35:e21401. [PMID: 33559190 DOI: 10.1096/fj.202000528rr] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 12/29/2020] [Accepted: 01/14/2021] [Indexed: 12/26/2022]
Abstract
The interaction between Tim-3 on T cell and its ligand, Galectin-9, negatively regulates cellular immune responses. However, the role of Tim-3/Galectin-9 pathway in the immune evasion of cervical cancer remains unknown. This study is to investigate the expression, function, and regulation of Tim-3/Galectin-9 signaling pathway in human papilloma virus (HPV) positive cervical cancer. Flow cytometry showed that Tim-3 expression on T cell and Galectin-9 expression on monocytes in HPV positive cervical cancer patients were significantly higher compared to cervical intraepithelial neoplasia and benign uterine fibroids Tim-3 + CD4+ Th1 cells and Tim-3 + CD8+ T cells in HPV positive cervical cancer patients were significantly reduced after surgery. Serum TGF-β and IL-10 levels were positively correlated with Tim-3 + Treg cells, while IFN-γ and IL-2 were negatively correlated with Tim-3 + Th1 cells. Additionally, Tim-3 + CD4+ T cells were positively correlated with Galectin-9 + monocytes. Survival curve analysis showed that Tim-3 + CD4+ T cells were negatively correlated with patient survival, and closely related to FIGO stage, degree of differentiation, and lymph node metastasis of HPV positive cervical cancer. In vitro experiments showed that by blocking the Tim-3/Galectin-9 pathway, the proliferation of T cells and their ability to express IFN-γ, IL-2, perforin, and granzyme B was significantly restored. In conclusion, high levels of Tim-3 and Galectin-9 in HPV positive cervical cancer patients play roles in the progression of disease by promoting Treg cells to inhibit the cytotoxic function of Th1 and CD8+ T cells. Tim-3/Galectin-9 may serve as a new immunotherapy target for patients with HPV positive cervical cancer.
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Affiliation(s)
- Zhifang Chen
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, PR China.,Department of Gynecology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Di Dong
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, PR China
| | - Yuejie Zhu
- Department of Gynecology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Nannan Pang
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, PR China
| | - Jianbing Ding
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, PR China.,Department of Immunology, College of Basic Medicine of Xinjiang Medical University, Urumqi, PR China
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14
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Zhao L, Cheng S, Fan L, Zhang B, Xu S. TIM-3: An update on immunotherapy. Int Immunopharmacol 2021; 99:107933. [PMID: 34224993 DOI: 10.1016/j.intimp.2021.107933] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/12/2021] [Accepted: 06/27/2021] [Indexed: 12/12/2022]
Abstract
T cell immunoglobulin and mucin domain 3 (TIM-3) was originally found to be expressed on the surface of Th1 cells, acting as a negative regulator and binding to the ligand galectin-9 to mediate Th1 cell the apoptosis. Recent studies have shown that TIM-3 is also expressed on other immune cells, such as macrophages, dendritic cells, and monocytes. In addition, TIM-3 ligands also include Psdter, High Mobility Group Box 1 (HMGB1) and Carcinoembryonic antigen associated cell adhesion molecules (Ceacam-1), which have different effects upon biding to different ligands on immune cells. Studies have shown that TIM-3 plays an important role in autoimmune diseases, chronic viral infections and tumors. A large amount of experimental data supports TIM-3 as an immune checkpoint, and targeting TIM-3 is a promising treatment method in current immunotherapy, especially the new combination of other immune checkpoint blockers. In this review, we summarize the role of TIM-3 in different diseases and its possible signaling pathway mechanisms, providing new insights for better breakthrough immunotherapy.
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Affiliation(s)
- Lizhen Zhao
- Department of Laboratory Medicine, The Third People's Hospital of Qingdao, Qingdao, Shandong 266071, China
| | - Shaoyun Cheng
- Department of Laboratory Medicine, The Third People's Hospital of Qingdao, Qingdao, Shandong 266071, China
| | - Lin Fan
- Department of Laboratory Medicine, The Third People's Hospital of Qingdao, Qingdao, Shandong 266071, China
| | - Bei Zhang
- Department of Immunology, Medical College of Qingdao University, Qingdao, Shandong 266071, China.
| | - Shengwei Xu
- Department of Laboratory Medicine, The Third People's Hospital of Qingdao, Qingdao, Shandong 266071, China.
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15
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Hu X, Zhu Q, Wang Y, Wang L, Li Z, Mor G, Liao A. Newly characterized decidual Tim-3+ Treg cells are abundant during early pregnancy and driven by IL-27 coordinately with Gal-9 from trophoblasts. Hum Reprod 2021; 35:2454-2466. [PMID: 33107565 DOI: 10.1093/humrep/deaa223] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 07/15/2020] [Indexed: 12/11/2022] Open
Abstract
STUDY QUESTION What is the mechanism of Tim-3+ regulatory T (Treg)-cell accumulation in the decidua during early pregnancy and is its disruption associated with recurrent pregnancy loss (RPL)? SUMMARY ANSWER IL-27 and Gal-9 secreted by trophoblasts activate the Tim-3 signaling pathway in CD4+ T cells and Treg cells and so promote accumulation of Tim-3+ Treg cells, the abnormal expression of IL-27 and Gal-9 is associated with impaired immunologic tolerance in RPL patients. WHAT IS KNOWN ALREADY Tim-3+ Treg cells are better suppressors of Teff cell proliferation, and display higher proliferative activity than Tim-3- Treg cells. Tim-3+ Treg cells are tissue-specific promoters of T-cell dysfunction in many tumors. These cells express a unique factor that influences and shapes the tumor microenvironment. STUDY DESIGN, SIZE, DURATION The animal study included 80 normal pregnant mice. In human study, decidua tissues in the first trimester for flow cytometry analysis were collected from 32 normal pregnant women and 23 RPL patients. Placenta tissues for immunohistochemistry analysis were collected from 15 normal pregnant women. Placenta tissues for western blot analysis were collected from 5 normal pregnant women, 5 RPL patients and 5 women who have experienced one miscarriage. Blood samples for in vitro experiments were collected from 30 normal pregnant women. This study was performed between January 2017 and March 2019. PARTICIPANTS/MATERIALS, SETTING, METHODS In this study, we investigated the kinetics of Tim-3+ CD4+ T-cell accumulation, and the proportions of Tim-3+ Treg cells throughout murine pregnancies using flow cytometry. We compared Tim-3 expression on decidual CD4+ T cells and Treg cells during normal pregnancies with expression on the same cell populations in women suffering from RPL. IL-27 and Gal-9 transcription and protein expression in the placenta were determined by RT-PCR and western blot, respectively. An in vitro co-culture model consisting of peripheral CD4+ T cells and primary trophoblasts from early pregnancy was used to mimic the maternal-fetal environment. MAIN RESULTS AND THE ROLE OF CHANCE The percentage of Tim-3+ Treg cells present in mouse uteri fluctuates as gestation proceeds but does not change in the spleen. Levels of Tim3+ Treg cells in uteri peaked at pregnancy Day 6.5 (E 6.5), then progressively diminished, and fell to non-pregnant levels by E18.5. In pregnant mice, Tim-3+ Treg cells constituted 40-70% of Treg cells in uteri but were present at much lower abundance in spleens. About 60% of decidual Treg cells were Tim-3 positive at E6.5. Of these decidual Tim3+ Treg cells, nearly 90% were PD-1 positive. However, only about 16% of Tim3- Treg cells expressed PD-1. Blocking the Tim-3 signaling pathway decreased the proportion of Treg cells and led to embryo resorption. Moreover, much lower Tim-3 expression was observed on CD4+ T cells and Treg cells in women who had suffered from RPL at 6-9 gestational weeks compared with those who had normal pregnancies at matched gestations. In a normal pregnancy, Tim-3 expression on decidual CD4+ T cells is induced initially by IL-27. Then Gal-9-Tim-3 interaction promotes differentiation of decidual Tim-3+ CD4+ T cells into Treg cells. IL-27 and Gal-9 cooperatively induced Tim-3+ Treg cells in vitro. LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION We did not investigate the kinetics of human decidual Tim-3+ CD4+ T and Tim-3+ Treg cell populations throughout pregnancy due to limited availability of second and third trimester decidua. In addition, functional suppressive data on the decidual Tim-3+ Treg cells are lacking due to limited and low quantities of these cells in decidua. WIDER IMPLICATIONS OF THE FINDINGS These findings might have therapeutic clinical implications in RPL. STUDY FUNDING/COMPETING INTEREST(S) This study was supported by research grants from the National Natural Science Foundation of China (No. 81871186) and National Key Research & Developmental Program of China (2018YFC1003900, 2018YFC1003904). The authors declare no conflict of interest.
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Affiliation(s)
- Xiaohui Hu
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Qian Zhu
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Yan Wang
- Department of Obstetrics and Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan, PR China
| | - Liling Wang
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Zhihui Li
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Gil Mor
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China.,Department of Obstetrics and Gynecology, C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
| | - Aihua Liao
- Institute of Reproductive Health, Center for Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
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16
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Aydin Y, Koksal AR, Reddy V, Lin D, Osman H, Heidari Z, Rhadhi SM, Wimley WC, Parsi MA, Dash S. Extracellular Vesicle Release Promotes Viral Replication during Persistent HCV Infection. Cells 2021; 10:cells10050984. [PMID: 33922397 PMCID: PMC8146326 DOI: 10.3390/cells10050984] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 12/15/2022] Open
Abstract
Hepatitis C virus (HCV) infection promotes autophagic degradation of viral replicative intermediates for sustaining replication and spread. The excessive activation of autophagy can induce cell death and terminate infection without proper regulation. A prior publication from this laboratory showed that an adaptive cellular response to HCV microbial stress inhibits autophagy through beclin 1 degradation. The mechanisms of how secretory and degradative autophagy are regulated during persistent HCV infection is unknown. This study was performed to understand the mechanisms of viral persistence in the absence of degradative autophagy, which is essential for virus survival. Using HCV infection of a CD63-green fluorescence protein (CD63-GFP), labeled stable transfected Huh-7.5 cell, we found that autophagy induction at the early stage of HCV infection increased the degradation of CD63-GFP that favored virus replication. However, the late-stage of persistent HCV infection showed impaired autophagic degradation, leading to the accumulation of CD63-GFP. We found that impaired autophagic degradation promoted the release of extracellular vesicles and exosomes. The impact of blocking the release of extracellular vesicles (EVs) on virus survival was investigated in persistently infected cells and sub-genomic replicon cells. Our study illustrates that blocking EV and exosome release severely suppresses virus replication without effecting host cell viability. Furthermore, we found that blocking EV release triggers interferon lambda 1 secretion. These findings suggest that the release of EVs is an innate immune escape mechanism that promotes persistent HCV infection. We propose that inhibition of extracellular vesicle release can be explored as a potential antiviral strategy for the treatment of HCV and other emerging RNA viruses.
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Affiliation(s)
- Yucel Aydin
- Department of Pathology and Laboratory Medicine, Tulane University Health Sciences Center, New Orleans, LA 70112, USA; (Y.A.); (V.R.); (D.L.); (H.O.); (S.M.R.)
| | - Ali Riza Koksal
- Department of Medicine, Division of Gastroenterology and Hepatology, Tulane University Health Sciences Center, New Orleans, LA 70112, USA; (A.R.K.); (M.A.P.)
| | - Venu Reddy
- Department of Pathology and Laboratory Medicine, Tulane University Health Sciences Center, New Orleans, LA 70112, USA; (Y.A.); (V.R.); (D.L.); (H.O.); (S.M.R.)
| | - Dong Lin
- Department of Pathology and Laboratory Medicine, Tulane University Health Sciences Center, New Orleans, LA 70112, USA; (Y.A.); (V.R.); (D.L.); (H.O.); (S.M.R.)
| | - Hanadi Osman
- Department of Pathology and Laboratory Medicine, Tulane University Health Sciences Center, New Orleans, LA 70112, USA; (Y.A.); (V.R.); (D.L.); (H.O.); (S.M.R.)
| | - Zahra Heidari
- Department of Chemical and Biomedical Engineering, Tulane University, New Orleans, LA 70112, USA;
| | - Sadeq Mutlab Rhadhi
- Department of Pathology and Laboratory Medicine, Tulane University Health Sciences Center, New Orleans, LA 70112, USA; (Y.A.); (V.R.); (D.L.); (H.O.); (S.M.R.)
| | - William C Wimley
- Department of Biochemistry and Molecular Biology, Tulane University Health Sciences Center, New Orleans, LA 70112, USA;
| | - Mansour A Parsi
- Department of Medicine, Division of Gastroenterology and Hepatology, Tulane University Health Sciences Center, New Orleans, LA 70112, USA; (A.R.K.); (M.A.P.)
| | - Srikanta Dash
- Department of Pathology and Laboratory Medicine, Tulane University Health Sciences Center, New Orleans, LA 70112, USA; (Y.A.); (V.R.); (D.L.); (H.O.); (S.M.R.)
- Department of Medicine, Division of Gastroenterology and Hepatology, Tulane University Health Sciences Center, New Orleans, LA 70112, USA; (A.R.K.); (M.A.P.)
- Southeast Louisiana Veterans Health Care System, 2400 Canal Street, New Orleans, LA 70119, USA
- Correspondence: ; Tel.: +1-504-988-2519; Fax: +1-504-988-7389
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Shi Y, Du L, Lv D, Li Y, Zhang Z, Huang X, Tang H. Emerging role and therapeutic application of exosome in hepatitis virus infection and associated diseases. J Gastroenterol 2021; 56:336-349. [PMID: 33665710 PMCID: PMC8005397 DOI: 10.1007/s00535-021-01765-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/23/2021] [Indexed: 02/05/2023]
Abstract
Hepatitis viruses are chief pathogens of hepatitis and end-stage liver diseases. Their replication and related pathogenic process highly rely on the host micro-environment and multiple cellular elements, including exosomes. Representing with a sort of cell-derived vesicle structure, exosomes were considered to be dispensable cellular components, even wastes. Along with advancing investigation, a specific profile of exosome in driving hepatitis viruses' infection and hepatic disease progression is revealed. Exosomes greatly affect the pathogenesis of hepatitis viruses by mediating their replication and modulating the host immune responses. The characteristics of host exosomes are markedly changed after infection with hepatitis viruses. Exosomes released from hepatitis virus-infected cells can carry viral nucleic or protein components, thereby acting as an effective subterfuge for hepatitis viruses by participating in viral transportation and immune escape. On the contrary, immune cell-derived exosomes contribute toward the innate antiviral immune defense and virus eradication. There is growing evidence supporting the application of exosomal biomarkers for predicting disease progress or therapeutic outcome, while exosomal nanoshuttles are regarded as promising therapeutic options based on their delivery properties and immune compatibility. In this review, we summarize the biogenesis and secretion mechanism of exosomes, review the recent findings pertaining to the role of exosomes in the interplay between hepatitis viruses and innate immune responses, and conclude their potential in further therapeutic application.
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Affiliation(s)
- Ying Shi
- Center of Infectious Diseases, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China
- School of Medicine, University of Electronic Science and Technology of China, No. 4 Section 2, North Jianshe Road, Chengdu, 610054, Sichuan, China
- Department of Hepatobiliary Surgery and Cell Transplantation Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, No. 32 Western Section 2, 1st Ring Rd., Chengdu, 610072, Sichuan, China
| | - Lingyao Du
- Center of Infectious Diseases, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, No. 17 People's South Road, Chengdu, 610041, Sichuan, China
| | - Duoduo Lv
- Center of Infectious Diseases, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, No. 17 People's South Road, Chengdu, 610041, Sichuan, China
| | - Yan Li
- School of Medicine, University of Electronic Science and Technology of China, No. 4 Section 2, North Jianshe Road, Chengdu, 610054, Sichuan, China
- Department of Hepatobiliary Surgery and Cell Transplantation Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, No. 32 Western Section 2, 1st Ring Rd., Chengdu, 610072, Sichuan, China
| | - Zilong Zhang
- School of Medicine, University of Electronic Science and Technology of China, No. 4 Section 2, North Jianshe Road, Chengdu, 610054, Sichuan, China
- Department of Hepatobiliary Surgery and Cell Transplantation Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, No. 32 Western Section 2, 1st Ring Rd., Chengdu, 610072, Sichuan, China
| | - Xiaolun Huang
- School of Medicine, University of Electronic Science and Technology of China, No. 4 Section 2, North Jianshe Road, Chengdu, 610054, Sichuan, China
- Department of Hepatobiliary Surgery and Cell Transplantation Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, No. 32 Western Section 2, 1st Ring Rd., Chengdu, 610072, Sichuan, China
| | - Hong Tang
- Center of Infectious Diseases, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Wuhou District, Chengdu, 610041, Sichuan, China.
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, No. 17 People's South Road, Chengdu, 610041, Sichuan, China.
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Du Y, Rong L, Cong Y, Shen L, Zhang N, Wang B. Macrophage polarization: an effective approach to targeted therapy of inflammatory bowel disease. Expert Opin Ther Targets 2021; 25:191-209. [PMID: 33682588 DOI: 10.1080/14728222.2021.1901079] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Introduction: Inflammatory bowel disease (IBD) is a systemic disease with immune abnormalities that can affect the entire digestive tract. A high percentage of patients with IBD are unresponsive to current pharmacological agents, hence the need exists for novel therapeutic approaches. There is compelling evidence that macrophage polarization plays a key role in the remission of IBD patients and that it could open up future treatment options for patients.Areas covered: This paper highlights the crucial role of macrophage polarization in IBD. The authors shed light on the phenotype and function of macrophages and potential drug targets for polarization regulation. Existing approaches for regulating macrophage polarization are discussed and potential solutions for safety concerns are considered. We performed a literature search on the IBD and macrophage polarization mainly published in PubMed January 2010-July 2020.Expert opinion: Evidence indicates that there are fewer M2 macrophages and a high proportion of M1 macrophages in the intestinal tissues of individuals who are non- responsive to treatment. Regulating macrophage polarization is a potential novel targeted option for IBD treatment. Improved mechanistic insights are required to uncover more precise and effective targets for skewing macrophages into a proper phenotype.
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Affiliation(s)
- Yaoyao Du
- Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lan Rong
- Department of Digestive Diseases, Huashan Hospital Affiliated to Fudan University, Shanghai, China
| | - Yuanhua Cong
- Center for Pharmaceutics Research, Shanghai Institute of Materia Medica Chinese Academy of Sciences, Shanghai, China
| | - Lan Shen
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ning Zhang
- Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Bing Wang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Center for Pharmaceutics Research, Shanghai Institute of Materia Medica Chinese Academy of Sciences, Shanghai, China
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19
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Moar P, Tandon R. Galectin-9 as a biomarker of disease severity. Cell Immunol 2021; 361:104287. [PMID: 33494007 DOI: 10.1016/j.cellimm.2021.104287] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/26/2020] [Accepted: 01/09/2021] [Indexed: 12/16/2022]
Abstract
Galectin-9 (Gal-9) is a β-galactoside binding lectin known for its immunomodulatory role in various microbial infections. Gal-9 is expressed in all organ systems and localized in the nucleus, cell surface, cytoplasm and the extracellular matrix. It mediates host-pathogen interactions and regulates cell signalling via binding to its receptors. Gal-9 is involved in many physiological functions such as cell growth, differentiation, adhesion, communication and death. However, recent studies have emphasized on the elevated levels of Gal-9 in autoimmune disorders, viral infections, parasitic invasion, cancer, acute liver failure, atopic dermatitis, chronic kidney disease, type-2 diabetes, coronary artery disease, atherosclerosis and benign infertility-related gynecological disorders. In this paper we have reviewed the potential of Gal-9 as a reliable, sensitive and non-invasive biomarker of disease severity. Tracking changes in Gal-9 levels and its implementation as a biomarker in clinical practice will be an important tool to monitor disease activity and facilitate personalized treatment decisions.
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Affiliation(s)
- Preeti Moar
- Laboratory of AIDS Research and Immunology, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India.
| | - Ravi Tandon
- Laboratory of AIDS Research and Immunology, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India.
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20
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Galectin-9 is required for endometrial regenerative cells to induce long-term cardiac allograft survival in mice. Stem Cell Res Ther 2020; 11:471. [PMID: 33153471 PMCID: PMC7643467 DOI: 10.1186/s13287-020-01985-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 10/20/2020] [Indexed: 12/25/2022] Open
Abstract
Background Endometrial regenerative cells (ERCs), a novel type of mesenchymal-like stem cells, were identified as an attractive candidate for immunoregulation and induction of cardiac allograft tolerance. However, the underlying mechanisms of ERCs in immune regulation still remain largely unclear. The present study is designed to determine whether the expression of Galectin-9 (Gal-9), a soluble tandem-repeat member of the galectin family, is crucial for ERC-based immunomodulation. Methods In this study, we measured Gal-9 expression on ERCs and then co-cultured Gal-9-ERCs, ERCs, and ERCs+lactose (Gal-9 blocker) with activated C57BL/6-derived splenocytes. Furthermore, we performed mouse heart transplantation between BALB/c (H-2d) donor and C57BL/6 (H-2b) recipient. ERCs were administrated 24 h after the surgery, either alone or in combination with rapamycin. Results Our data demonstrate that ERCs express Gal-9, and this expression is increased by IFN-γ stimulation in a dose-dependent manner. Moreover, both in vitro and in vivo results show that Gal-9-ERC-mediated therapy significantly suppressed Th1 and Th17 cell response, inhibited CD8+ T cell proliferation, abrogated B cell activation, decreased donor-specific antibody production, and enhanced the Treg population. The therapeutic effect of ERCs was further verified by their roles in prolonging cardiac allograft survival and alleviating graft pathological changes. Conclusions Taken together, these data indicate that Gal-9 is required for ERC-mediated immunomodulation and prevention of allograft rejection.
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Immune Checkpoints in Viral Infections. Viruses 2020; 12:v12091051. [PMID: 32967229 PMCID: PMC7551039 DOI: 10.3390/v12091051] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/16/2020] [Accepted: 09/17/2020] [Indexed: 12/13/2022] Open
Abstract
As evidence has mounted that virus-infected cells, such as cancer cells, negatively regulate the function of T-cells via immune checkpoints, it has become increasingly clear that viral infections similarly exploit immune checkpoints as an immune system escape mechanism. Although immune checkpoint therapy has been successfully used in cancer treatment, numerous studies have suggested that such therapy may also be highly relevant for treating viral infection, especially chronic viral infections. However, it has not yet been applied in this manner. Here, we reviewed recent findings regarding immune checkpoints in viral infections, including COVID-19, and discussed the role of immune checkpoints in different viral infections, as well as the potential for applying immune checkpoint blockades as antiviral therapy.
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Liu S, Liu F, Zhou Y, Jin B, Sun Q, Guo S. Immunosuppressive Property of MSCs Mediated by Cell Surface Receptors. Front Immunol 2020; 11:1076. [PMID: 32849489 PMCID: PMC7399134 DOI: 10.3389/fimmu.2020.01076] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 05/04/2020] [Indexed: 12/16/2022] Open
Abstract
In the past decade, mesenchymal stem cells (MSCs) tend to exhibit inherent tropism for refractory inflammatory diseases and engineered MSCs have appeared on the market as therapeutic agents. Recently, engineered MSCs target to cell surface molecules on immune cells has been a new strategy to improve MSC applications. In this review, we discuss the roles of multiple receptors (ICAM-1, Gal-9, PD-L1, TIGIT, CD200, and CXCR4) in the process of MSCs' immunosuppressive properties. Furthermore, we discuss the principles and strategies for developing receptor-regulated MSCs and their mechanisms of action and the challenges of using MSCs as immunosuppressive therapies.
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Affiliation(s)
- Siyu Liu
- Department of Plastic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Fei Liu
- Department of Breast Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - You Zhou
- Department of Plastic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Baeku Jin
- Department of Plastic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Qiang Sun
- Department of Plastic Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Shu Guo
- Department of Plastic Surgery, The First Hospital of China Medical University, Shenyang, China
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Szereday L, Meggyes M, Berki T, Miseta A, Farkas N, Gervain J, Par A, Par G. Direct-acting antiviral treatment downregulates immune checkpoint inhibitor expression in patients with chronic hepatitis C. Clin Exp Med 2020; 20:219-230. [PMID: 32108916 PMCID: PMC7181552 DOI: 10.1007/s10238-020-00618-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 02/18/2020] [Indexed: 12/13/2022]
Abstract
Chronic hepatitis C (CHC) infection is associated with increased TIM-3, PD-1 immune checkpoint receptors expression that inhibits adaptive T cells and increases NK cell cytotoxicity against T helper cells, both resulting T cell exhaustion. Elimination of the virus with direct-acting antivirals (DAAs) may modify host immune response via altering these immune checkpoint receptors’ expression. We conducted a prospective study to analyze changes in TIM-3, PD-1 and their ligands galectin-9, PD-L1 expression by peripheral blood T cell subpopulations, NK cell subpopulations, and monocytes by multicolor flow cytometry in 14 CHC patients successfully treated with 12 weeks of dasabuvir, ombitasvir, and paritaprevir/ritonavir plus ribavirin. Blood samples were collected before, at the end of treatment, and 12 and 24 weeks later. Sustained virological response (SVR) was associated with increased percentage of peripheral blood CD3+ T and CD8+ cytotoxic T lymphocytes and decreased percentage of NKbright cells. After DAA treatment, decreased TIM-3 expression by CD4+ T cells, by NKbright, and by NKT cells was found. Expression of immune checkpoint molecules’ ligand PD-L1 by NK cells and by regulatory T cells and galectin-9 by NK cells and monocytes also decreased significantly at SVR. Our data suggest that DAA treatment not only inhibits viral replication but may alter host adaptive and innate immune responses. A decrease in immune checkpoint molecules and their ligands expression both on adaptive and on innate immune cells may contribute to the recovery of exhausted adaptive immune responses and to sustained virological response.
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Affiliation(s)
- Laszlo Szereday
- Department of Medical Microbiology and Immunology, University of Pecs, Medical School, 12 Szigeti Street, Pecs, 7624, Hungary. .,Janos Szentagothai Research Centre, Pecs, Hungary.
| | - Matyas Meggyes
- Department of Medical Microbiology and Immunology, University of Pecs, Medical School, 12 Szigeti Street, Pecs, 7624, Hungary.,Janos Szentagothai Research Centre, Pecs, Hungary
| | - Timea Berki
- Department of Biotechnology and Immunology, University of Pecs, Medical School, Pecs, Hungary
| | - Attila Miseta
- Department of Laboratory Medicine, University of Pecs, Medical School, Pecs, Hungary
| | - Nelli Farkas
- Institute for Translational Medicine, University of Pecs, Medical School, Pecs, Hungary
| | - Judit Gervain
- County Hospital Fejér, Szent György Hospital, Szekesfehervar, Hungary
| | - Alajos Par
- Division of Gastroenterology, First Department of Medicine, University of Pecs, Medical School, Pecs, Hungary
| | - Gabriella Par
- Institute for Translational Medicine, University of Pecs, Medical School, Pecs, Hungary.,Division of Gastroenterology, First Department of Medicine, University of Pecs, Medical School, Pecs, Hungary
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Chen M, Wang L, Wang Y, Zhou X, Liu X, Chen H, Huang B, Hu Z. Soluble Tim3 detection by time-resolved fluorescence immunoassay and its application in membranous nephropathy. J Clin Lab Anal 2020; 34:e23248. [PMID: 32077157 PMCID: PMC7307342 DOI: 10.1002/jcla.23248] [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: 08/14/2019] [Revised: 01/25/2020] [Accepted: 01/27/2020] [Indexed: 12/14/2022] Open
Abstract
Background We aimed to develop a time‐resolved fluorescence immunoassay (TRFIA) for detecting soluble T‐cell immunoglobulin and mucin domain 3 (sTim3) in serum samples and to demonstrate a preliminary application of this method in membranous nephropathy (MN). Methods sTim3 TRFIA was developed, and the sTim3 concentration in the serum of patients with MN and healthy individuals was detected using a sandwich method. Results The sensitivity of the developed sTim3 TRFIA was 0.66 ng/mL, higher than that of an enzyme‐linked immunosorbent assay (ELISA) (1.11 ng/mL). The detection range was 0.66‐40 ng/mL. The intra‐assay coefficient of variation (CV) for sTim3 was 1.64%‐4.68%, and the inter‐assay CV was 5.72%‐9.32%. The cross‐reactivity to interleukin 6 (IL‐6) and kidney injury molecule 1 (KIM‐1) was 0.25% and 0.04%, respectively. The average recovery was 105.26%. The sTim3 concentration in patients with MN was considerably higher than that in healthy individuals (P < .001). The sTim3 concentration in the serum of patients with MN was significantly increased from G1 to G4 based on the Jonckheere‐Terpstra test (P < .001). Thus, we used sTim3 as a diagnostic indicator for distinguishing between healthy individuals and patients with MN as well as between different stages of MN. Conclusion We successfully established TRFIA to detect sTim3 in serum. We then applied this method to patients with MN, demonstrating for the first time that TRFIA is a valid diagnostic tool to detect sTim3 in serum.
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Affiliation(s)
- Ming Chen
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Liang Wang
- Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi, China
| | - Yigang Wang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xiumei Zhou
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xinyuan Liu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Hao Chen
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Biao Huang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, China
| | - Zhigang Hu
- Wuxi Children's Hospital, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi, China
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Zhao L, Yu G, Han Q, Cui C, Zhang B. TIM-3: An emerging target in the liver diseases. Scand J Immunol 2020; 91:e12825. [PMID: 31486085 DOI: 10.1111/sji.12825] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/27/2019] [Accepted: 08/31/2019] [Indexed: 12/17/2022]
Abstract
T cell immunoglobulin domain and mucin domain-containing molecule 3 (TIM-3) is found expression in the surface of terminally differentiated T cells and belongs to the TIM family of type Ⅰ transmembrane proteins. It binds to the ligand Galectin-9 and mediates T cell apoptosis. As the research progresses, TIM-3 is also expressed in Th17, NK, monocyte, which binds to ligand and induce immune peripheral tolerance in both mice and man. Numerous researches have demonstrated that TIM-3 influences liver diseases, including liver-associated chronic viral infection, liver fibrosis, liver cancer et al and suggest new approaches to intervention. Currently, targeted therapy of TIM-3 is a new treatment in the field of immunization. Although many studies have proven that TIM-3 has an inhibitory effect in vivo, the specific mechanism is not clear. Herein, we summarize the important role of TIM-3 in the regulation of liver disease and prospects for future clinical research. TIM-3 will provide new targets for improving clinical liver disease.
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Affiliation(s)
- Lizhen Zhao
- Department of Immunology, Medical College of Qingdao University, Qingdao, China
| | - Guoyi Yu
- Editorial Office of Journal of Qingdao University (Medical Science), Qingdao, China
| | - Qi Han
- Department of Immunology, Medical College of Qingdao University, Qingdao, China
| | - Congxian Cui
- Affiliated Hospital of Qingdao University Medical College, Qingdao, China
| | - Bei Zhang
- Department of Immunology, Medical College of Qingdao University, Qingdao, China
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Ghazal K, Morales O, Barjon C, Dahlqvist G, Aoudjehane L, Ouaguia L, Delhem N, Conti F. Early high levels of regulatory T cells and T helper 1 may predict the progression of recurrent hepatitis C after liver transplantation. Clin Res Hepatol Gastroenterol 2019; 43:273-281. [PMID: 30713032 DOI: 10.1016/j.clinre.2018.10.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 09/25/2018] [Accepted: 10/02/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Immune response failure against hepatitis C virus (HCV) has been associated with an increased regulatory T cell (Treg) activity. After liver transplantation (LT), 80% of patients experience an accelerated progression of hepatitis C recurrence. The aim of this work was to assess the involvement of Tregs, T helper (Th) 1, 2 and 17 cells in recurrent hepatitis C. METHODS Peripheral blood cells obtained before and one month after LT from 22 recipients were analysed. Forty-four key molecules related to Treg, Th1, 2 and 17 responses, were evaluated using qRT-PCR. Liver recipients were classified in two groups according to graft fibrosis evaluated by the METAVIR score on the biopsy performed one year after LT (mild: F ≤ 1, n = 13; severe: F > 1, n = 9). Patients developing a severe recurrence were compared with patients with a mild recurrence. RESULTS mRNA levels of Treg markers obtained one month after LT were significantly increased in patients with a severe disease course when compared to patients with a mild recurrence. Markers of the Th1 response were elevated in the same group. No differences in the markers determined before LT were observed. CONCLUSION These findings suggest that Treg, induced by a multifactorial process, which could include a strong Th1 response itself, may play a role in suppressing the early antiviral response, leading to a severe recurrence of hepatitis C.
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Affiliation(s)
- K Ghazal
- Sorbonne Universités, UPMC Université Paris 06, INSERM, UMR_S 938, Saint-Antoine Research Center, 75012 Paris, France; AP-HP, Bicêtre Hospital, Biochemistry Laboratory, 94275 Le Kremlin-Bicêtre cedex, France.
| | - O Morales
- CNRS, UMR8161, Institut de Biologie de Lille, Université de Lille, Institut Pasteur de Lille, IFR 142, 59021 Lille cedex, France
| | - C Barjon
- Sorbonne Universités, UPMC Université Paris 06, INSERM, UMR_S 938, Saint-Antoine Research Center, 75012 Paris, France; De Duve Institute, Université catholique de Louvain, 1200 Brussels, Belgium
| | - G Dahlqvist
- Sorbonne Universités, UPMC Université Paris 06, INSERM, UMR_S 938, Saint-Antoine Research Center, 75012 Paris, France; Cliniques Universitaires Saint-Luc, 1200 Woluwe-Saint-Lambert, Belgium
| | - L Aoudjehane
- Sorbonne Universités, UPMC Université Paris 06, INSERM, UMR_S 938, Saint-Antoine Research Center, 75012 Paris, France; Institute of Cardiometabolism and Nutrition (ICAN), 75013 Paris, France
| | - L Ouaguia
- CNRS, UMR8161, Institut de Biologie de Lille, Université de Lille, Institut Pasteur de Lille, IFR 142, 59021 Lille cedex, France
| | - N Delhem
- CNRS, UMR8161, Institut de Biologie de Lille, Université de Lille, Institut Pasteur de Lille, IFR 142, 59021 Lille cedex, France
| | - F Conti
- Sorbonne Universités, UPMC Université Paris 06, INSERM, UMR_S 938, Saint-Antoine Research Center, 75012 Paris, France; AP-HP, Pitié-Salpêtrière hospital, Unité Médicale de Transplantation Hépatique, 75013 Paris, France
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Machala EA, McSharry BP, Rouse BT, Abendroth A, Slobedman B. Gal power: the diverse roles of galectins in regulating viral infections. J Gen Virol 2019; 100:333-349. [PMID: 30648945 DOI: 10.1099/jgv.0.001208] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Viruses, as a class of pathogenic microbe, remain a significant health burden globally. Viral infections result in significant morbidity and mortality annually and many remain in need of novel vaccine and anti-viral strategies. The development of effective novel anti-viral therapeutics, in particular, requires detailed understanding of the mechanism of viral infection, and the host response, including the innate and adaptive arms of the immune system. In recent years, the role of glycans and lectins in pathogen-host interactions has become an increasingly relevant issue. This review focuses on the interactions between a specific lectin family, galectins, and the broad range of viral infections in which they play a role. Discussed are the diverse activities that galectins play in interacting directly with virions or the cells they infect, to promote or inhibit viral infection. In addition we describe how galectin expression is regulated both transcriptionally and post-transcriptionally by viral infections. We also compare the contribution of known galectin-mediated immune modulation, across a range of innate and adaptive immune anti-viral responses, to the outcome of viral infections.
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Affiliation(s)
- Emily A Machala
- 1Discipline of Infectious Diseases and Immunology, University of Sydney, Camperdown, New South Wales, Australia
| | - Brian P McSharry
- 1Discipline of Infectious Diseases and Immunology, University of Sydney, Camperdown, New South Wales, Australia
| | - Barry T Rouse
- 2Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee, USA
| | - Allison Abendroth
- 1Discipline of Infectious Diseases and Immunology, University of Sydney, Camperdown, New South Wales, Australia
| | - Barry Slobedman
- 1Discipline of Infectious Diseases and Immunology, University of Sydney, Camperdown, New South Wales, Australia
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Viral hepatitis, inflammation, and cancer: A lesson for autoimmunity. J Autoimmun 2018; 95:58-68. [PMID: 30509387 DOI: 10.1016/j.jaut.2018.10.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 10/22/2018] [Indexed: 12/23/2022]
Abstract
In the present review, we analyzed the various overlapping and non-mutually exclusive mechanisms that intersect and form complex and highly flexible immunological networks allowing the defense against liver infections and tumors. Liver immunity results from the combination of the skills of systemic and local immune system(s) to sense and recognize pathogen or tumor antigens, to sensitize a wide range of innate and adaptive immune cells, and to clear the "invaders", through the establishment of a transient liver immunopathology state undergoing resolution/control of infections or tumors, and memory development. Then, a special emphasis is placed on discussing about the capacity of the immune system(s) to develop a state of chronic low-level immunopathology adapting through the intervention of simultaneous immunoregulatory mechanisms, when the liver is infected by highly mutable viruses (e.g., hepatitis B or C viruses [HBV or HCV]) capable to escape from the immune recognition. The establishment of chronic inflammation represents an advantage for the species survival, because it guarantees the long-term survival of human hosts despite the virus persistence. However, chronic inflammation, in the long run, can evolve towards severe consequences (decompensated cirrhosis and hepatocellular carcinoma) in some individuals, finding requiring the impelling need of discovering new therapeutic anti-viral and immunostimulatory agents addressed, in combination, to fight especially HBV that, in contrast to HCV, lacks antivirals capable to eradicate the virus. Finally, we discussed the concept proposing that the divergent immunoregulatory mechanisms that develop in persisting infections or tumors, on the one hand, and autoimmunity, on the other hand, are the mirror image of each other, whose understanding is also relevant for preparing novel immunotherapeutic approaches in autoimmune diseases.
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Zhao MG, Liang GB, Zhang HF, Zhao GF, Luo YH. Soluble galectin 9 potently enhanced regulatory T-cell formation, a pathway impaired in patients with intracranial aneurysm. Clin Exp Pharmacol Physiol 2018; 45:1206-1212. [PMID: 29978574 DOI: 10.1111/1440-1681.13007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 06/30/2018] [Accepted: 07/03/2018] [Indexed: 01/15/2023]
Affiliation(s)
- Ming-Guang Zhao
- Department of Neurosurgery; General Hospital of Shenyang Military Area Command; Shenhe District Shenyang China
| | - Guo-Biao Liang
- Department of Neurosurgery; General Hospital of Shenyang Military Area Command; Shenhe District Shenyang China
| | - Hai-Feng Zhang
- Department of Neurosurgery; General Hospital of Shenyang Military Area Command; Shenhe District Shenyang China
| | - Guo-Feng Zhao
- Department of Neurosurgery; General Hospital of Shenyang Military Area Command; Shenhe District Shenyang China
| | - Yun-He Luo
- Department of Neurosurgery; General Hospital of Shenyang Military Area Command; Shenhe District Shenyang China
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Cobb DA, Golden-Mason L, Rosen HR, Hahn YS, Hahn YS. Hepatocyte-derived exosomes promote T follicular regulatory cell expansion during hepatitis C virus infection. Hepatology 2018; 67:71-85. [PMID: 28749570 PMCID: PMC5739980 DOI: 10.1002/hep.29409] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 07/17/2017] [Accepted: 07/25/2017] [Indexed: 12/11/2022]
Abstract
UNLABELLED Hepatitis C virus (HCV) is a global health concern that can cause severe liver disease, such as cirrhosis and hepatocellular carcinoma. Control of HCV requires vigorous T-cell responses, yet CD4+ T cells in chronic HCV patients are dysfunctional. T follicular regulatory (Tfr) cells are a subset of regulatory T cells that suppress T follicular helper (Tfh) cells and the generation of high affinity antibody-producing B cells. In this study, we examined the accumulation of Tfr cells in the liver compartment during chronic HCV infection and defined the cellular and molecular mechanisms underlying their expansion. Our analysis revealed a substantial population of Tfr cells in livers of chronic HCV patients that is absent in liver tissues from nonviral hepatitis or healthy subjects. Coculture of PBMCs from healthy subjects with HCV-infected hepatoma cells resulted in preferential expansion of circulating Tfr cells, leading to suppression of Tfh cells. Additionally, coculture of tonsillar cells with infected hepatoma cells lead to an expansion of germinal center Tfr. Notably, expansion was mediated by transforming growth factor beta (TGF-β)-containing exosomes released from HCV-infected hepatocytes given that blockade of exosome-associated TGF-β or inhibition of exosome release abrogated Tfr expansion. CONCLUSION These results show that liver-derived exosomes play a pivotal role in the accumulation of Tfr cells, likely leading to suppression of Tfh responses in HCV-infected patients. Our study identifies a novel pathway in which HCV infection in hepatocytes exacerbates Tfr cell responses to subvert antiviral immunity. (Hepatology 2018;67:71-85).
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Affiliation(s)
- Dustin A. Cobb
- Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville
| | - Lucy Golden-Mason
- Department of Gastroenterology, University of Colorado Health Sciences Center, Aurora, CO
| | - Hugo R. Rosen
- Department of Gastroenterology, University of Colorado Health Sciences Center, Aurora, CO
| | - Young S. Hahn
- Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville,Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville,Corresponding author: Young S. Hahn, UVA-Beirne Carter Center, 345 Crispell Dr. MR6 Bldg Room 3713, Charlottesville, VA 22908-1386, Telephone number: 434-924-1155, Fax number: 434-924-1221,
| | - Young S. Hahn
- Beirne B. Carter Center for Immunology Research; University of Virginia; Charlottesville VA
- Department of Microbiology, Immunology, and Cancer Biology; University of Virginia; Charlottesville VA
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HCV immune evasion and regulatory T cell activation: cause or consequence? Cell Mol Immunol 2017; 15:536-538. [PMID: 29176743 DOI: 10.1038/cmi.2017.131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 10/11/2017] [Indexed: 01/29/2023] Open
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Translational Implication of Galectin-9 in the Pathogenesis and Treatment of Viral Infection. Int J Mol Sci 2017; 18:ijms18102108. [PMID: 28991189 PMCID: PMC5666790 DOI: 10.3390/ijms18102108] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 09/29/2017] [Accepted: 10/06/2017] [Indexed: 12/16/2022] Open
Abstract
The interaction between galectin-9 and its receptor, Tim-3, triggers a series of signaling events that regulate immune responses. The expression of galectin-9 has been shown to be increased in a variety of target cells of many different viruses, such as hepatitis C virus (HCV), hepatitis B virus (HBV), herpes simplex virus (HSV), influenza virus, dengue virus (DENV), and human immunodeficiency virus (HIV). This enhanced expression of galectin-9 following viral infection promotes significant changes in the behaviors of the virus-infected cells, and the resulting events tightly correlate with the immunopathogenesis of the viral disease. Because the human immune response to different viral infections can vary, and the lack of appropriate treatment can have potentially fatal consequences, understanding the implications of galectin-9 is crucial for developing better methods for monitoring and treating viral infections. This review seeks to address how we can apply the current understanding of galectin-9 function to better understand the pathogenesis of viral infection and better treat viral diseases.
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唐 映, 徐 加. Tim-3在肝脏疾病中的调节作用. Shijie Huaren Xiaohua Zazhi 2017; 25:2080-2087. [DOI: 10.11569/wcjd.v25.i23.2080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
T淋巴细胞免疫球蛋白黏蛋白分子(T-cell immunoglobulin domain and mucin domain-containing molecule, Tim)-3是Tim家族中的一员, 为近年来新发现的一种在辅助Ⅰ型T淋巴细胞(Help T cell 1, Th1)上特异性表达的Ⅰ型细胞表面分子. Tim-3作为负性调节因子通过与其配体Galectin-9结合引起细胞死亡, 进而调控Th1型细胞功能. Tim-3还表达于其他类型细胞表面, 如自然杀伤细胞、树突状细胞和单核细胞, 对自身免疫性疾病和其他免疫介导的疾病进行免疫调控. 对Tim-3在不同细胞不同免疫条件下的功能以及如何调节进行研究, 将有利于研发Tim-3的潜在治疗作用. 近年来大量研究显示Tim-3通道与肝脏疾病发生发展有着密切关系, 本文就其在肝脏疾病中的调节作用做一总结.
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Zhuo Y, Zhang YF, Wu HJ, Qin L, Wang YP, Liu AM, Wang XH. Interaction between Galectin-9/TIM-3 pathway and follicular helper CD4 + T cells contributes to viral persistence in chronic hepatitis C. Biomed Pharmacother 2017; 94:386-393. [PMID: 28772217 DOI: 10.1016/j.biopha.2017.07.134] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/12/2017] [Accepted: 07/25/2017] [Indexed: 02/07/2023] Open
Abstract
Both Galectin 9 (Gal-9)/T-cell immunoglobulin and mucin domain-containing protein 3 (TIM-3) pathway and follicular helper CD4+ T (Tfh) cells play important roles in persistent hepatitis C virus (HCV) infection. Thus, we aimed to investigate the regulatory role of interaction between Gal-9/TIM-3 pathway and Tfh cells in chronic hepatitis C. A total of 44 chronic hepatitis C patients and 19 normal controls (NCs) were enrolled in this study. Purified CD4+ T cells were cultured by TIM-3 Fc protein, recombinant Gal-9, or IL-21 for 48h. TIM-3 expression, Tfh proportion, and IL-21 production was measured, respectively. The immunomodulatory role of Gal-9/TIM-3 and IL-21 was also investigated in HCV cell culture system in vitro. We found that the percentage corresponding to both TIM-3-positive and CXCR5+ICOS+ Tfh cells within CD4+ T cells, which correlated with HCV RNA replication, was significantly elevated in patients with chronic hepatitis C in comparison with those in NCs. Moreover, blockade of Gal-9/TIM-3 pathway by TIM-3 Fc protein increased Tfh cells proportion, IL-21 mRNA and protein expression within purified CD4+ T cells, while activation of Gal-9/TIM-3 signaling by Gal-9 stimulation decreased IL-21 production in both patients with chronic HCV infection and healthy individuals. Meanwhile, high concentrations (100 and 200ng/mL) of IL-21 stimulation also elevated TIM-3 expression on CD4+ T cells in chronic hepatitis C. Furthermore, TIM-3 blockage and IL-21 stimulation suppressed mRNA expressions of HCV-induced antiviral proteins (myxovirus resistance A and oligoadenylate synthetase) in Huh7.5 cells without affecting viral replication in HCV cell culture system. The interaction between Gal-9/TIM-3 pathway and Tfh cells contributed to viral persistent in chronic HCV infection, which might be pivotal for development of new therapeutic approaches for chronic hepatitis C.
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Affiliation(s)
- Ya Zhuo
- Department of Infectious Diseases II, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Xinxiang, Henan Province, China
| | - Yi-Fu Zhang
- Department of Thyroid Breast and Vascular Surgery, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Xinxiang, Henan Province, China
| | - Hong-Jie Wu
- Department of Infectious Diseases II, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Xinxiang, Henan Province, China
| | - Lei Qin
- Department of Gastroenterology, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Xinxiang, Henan Province, China
| | - Yan-Ping Wang
- Department of Infectious Diseases III, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Xinxiang, Henan Province, China
| | - A-Min Liu
- Department of Infectious Diseases II, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Xinxiang, Henan Province, China
| | - Xin-Hong Wang
- Department of Infectious Diseases II, The First Affiliated Hospital of Xinxiang Medical University, Weihui, Xinxiang, Henan Province, China.
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Lenalidomide acts as an adjuvant for HCV DNA vaccine. Int Immunopharmacol 2017; 48:231-240. [DOI: 10.1016/j.intimp.2017.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 04/18/2017] [Accepted: 05/08/2017] [Indexed: 12/20/2022]
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Abstract
Galectins is a family of non-classically secreted, beta-galactoside-binding proteins that has recently received considerable attention in the spatio-temporal regulation of surface 'signal lattice' organization, membrane dynamics, cell-adhesion and disease therapeutics. Galectin-9 is a unique member of this family, with two non-homologous carbohydrate recognition domains joined by a linker peptide sequence of variable lengths, generating isoforms with distinct properties and functions in both physiological and pathological settings, such as during development, immune reaction, neoplastic transformations and metastasis. In this review, we summarize the latest knowledge on the structure, receptors, cellular targets, trafficking pathways and functional properties of galectin-9 and discuss how galectin-9-mediated signalling cascades can be exploited in cancers and immunotherapies.
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Affiliation(s)
- Sebastian John
- Department of Neurobiology and Genetics, Division of Disease Biology, Rajiv Gandhi Centre for Biotechnology, Poojappura, Thiruvananthapuram 695014, India
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Shen J, Huang CK, Yu H, Shen B, Zhang Y, Liang Y, Li Z, Feng X, Zhao J, Duan L, Cai X. The role of exosomes in hepatitis, liver cirrhosis and hepatocellular carcinoma. J Cell Mol Med 2017; 21:986-992. [PMID: 28224705 PMCID: PMC5387156 DOI: 10.1111/jcmm.12950] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 06/29/2016] [Indexed: 12/21/2022] Open
Abstract
Exosomes are small vesicles that were initially thought to be a mechanism for discarding unneeded membrane proteins from reticulocytes. Their mediation of intercellular communication appears to be associated with several biological functions. Current studies have shown that most mammalian cells undergo the process of exosome formation and utilize exosome‐mediated cell communication. Exosomes contain various microRNAs, mRNAs and proteins. They have been reported to mediate multiple functions, such as antigen presentation, immune escape and tumour progression. This concise review highlights the findings regarding the roles of exosomes in liver diseases, particularly hepatitis B, hepatitis C, liver cirrhosis and hepatocellular carcinoma. However, further elucidation of the contributions of exosomes to intercellular information transmission is needed. The potential medical applications of exosomes in liver diseases seem practical and will depend on the ingenuity of future investigators and their insights into exosome‐mediated biological processes.
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Affiliation(s)
- Jiliang Shen
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Chiung-Kuei Huang
- Department of Medicine, Rhode Island Hospital and The Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Hong Yu
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Bo Shen
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Yaping Zhang
- Department of Anesthesiology, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Yuelong Liang
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Zheyong Li
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Xu Feng
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Jie Zhao
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Lian Duan
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Xiujun Cai
- Department of General Surgery, Sir Run-Run Shaw Hospital, Zhejiang University, Hangzhou, China
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Ren JP, Ying RS, Cheng YQ, Wang L, El Gazzar M, Li GY, Ning SB, Moorman JP, Yao ZQ. HCV-induced miR146a controls SOCS1/STAT3 and cytokine expression in monocytes to promote regulatory T-cell development. J Viral Hepat 2016; 23:755-66. [PMID: 27004559 PMCID: PMC5028233 DOI: 10.1111/jvh.12537] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 02/19/2016] [Indexed: 02/06/2023]
Abstract
Host innate and adaptive immune responses must be tightly regulated by an intricate balance between positive and negative signals to ensure their appropriate onset and termination while fighting pathogens and avoiding autoimmunity; persistent pathogens may usurp these regulatory machineries to dampen host immune responses for their persistence in vivo. Here, we demonstrate that miR146a is up-regulated in monocytes from hepatitis C virus (HCV)-infected individuals compared to control subjects. Interestingly, miR146a expression in monocytes without HCV infection increased, whereas its level in monocytes with HCV infection decreased, following Toll-like receptor (TLR) stimulation. This miR146a induction by HCV infection and differential response to TLR stimulation were recapitulated in vitro in monocytes co-cultured with hepatocytes with or without HCV infection. Importantly, inhibition of miR146a in monocytes from HCV-infected patients led to a decrease in IL-23, IL-10 and TGF-β expressions through the induction of suppressor of cytokine signalling 1 (SOCS1) and the inhibition of signal transducer and activator transcription 3 (STAT3), and this subsequently resulted in a decrease in regulatory T cells (Tregs) accumulated during HCV infection. These results suggest that miR146a may regulate SOCS1/STAT3 and cytokine signalling in monocytes, directing T-cell differentiation and balancing immune clearance and immune injury during chronic viral infection.
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Affiliation(s)
- J P Ren
- Center for Inflammation, Infectious Diseases and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - R S Ying
- Center for Inflammation, Infectious Diseases and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
- Department of Hepatology, Guangzhou Number 8 People's Hospital, Guangzhou, China
| | - Y Q Cheng
- Center for Inflammation, Infectious Diseases and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
- International Center for Diagnosis and Treatment of Liver Diseases, 302 Hospital, Beijing, China
| | - L Wang
- Center for Inflammation, Infectious Diseases and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - M El Gazzar
- Center for Inflammation, Infectious Diseases and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - G Y Li
- Center for Inflammation, Infectious Diseases and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - S B Ning
- Center for Inflammation, Infectious Diseases and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - J P Moorman
- Center for Inflammation, Infectious Diseases and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
- Hepatitis (HCV/HIV) Program, James H. Quillen VA Medical Center, Johnson City, TN, USA
| | - Z Q Yao
- Center for Inflammation, Infectious Diseases and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.
- Hepatitis (HCV/HIV) Program, James H. Quillen VA Medical Center, Johnson City, TN, USA.
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Quarleri JF, Oubiña JR. Hepatitis C virus strategies to evade the specific-T cell response: a possible mission favoring its persistence. Ann Hepatol 2016; 15:17-26. [PMID: 26626636 DOI: 10.5604/16652681.1184193] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Hepatitis C virus (HCV) is a small, enveloped RNA virus. The number of HCV-infected individuals worldwide is estimated to be approximately 200 million. The vast majority of HCV infections persist, with up to 80% of all cases leading to chronic hepatitis associated with liver fibrosis, cirrhosis, and hepatocellular carcinoma. The interaction between HCV and the host have a pivotal role in viral fitness, persistence, pathogenicity, and disease progression. The control of HCV infection requires both effective innate and adaptive immune responses. The HCV clearance during acute infection is associated with an early induction of the innate and a delayed initiation of the adaptive immune responses. However, in the vast majority of acute HCV infections, these responses are overcome and the virus persistence almost inexorably occurs. Recently, several host- and virus-related mechanisms responsible for the failure of both the innate and the adaptive immune responses have been recognized. Among the latter, the wide range of escape mutations to evade the specific-T-and B-cell responses as well as the T cell anergy and the CD8+ T cell exhaustion together with the interference with its function after prolonged virus exposure hold a pivotal role. Other HCV strategies include the modification or manipulation of molecules playing key roles in the induction of the interferon response and its induced effector proteins. In this review, we attempt to gain insights on the main T cell immune evasion strategies used by the virus in order to favor its persistence.
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Affiliation(s)
- Jorge Fabián Quarleri
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), Universidad de Buenos Aires-CONICET, Argentina
| | - José Raúl Oubiña
- Instituto de Microbiología y Parasitología Médica (IMPAM), Universidad de Buenos Aires-CONICET, Argentina
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40
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Wu XL. Significance of CD4 +CD25 +CD127 low/- regulatory T cells in hepatitis C. Shijie Huaren Xiaohua Zazhi 2016; 24:3182-3187. [DOI: 10.11569/wcjd.v24.i20.3182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
AIM: To investigate the diagnostic and therapeutic significance of CD4+CD25+CD127low/- regulatory T (Treg) cell ratio in peripheral blood of patients with chronic hepatitis C.
METHODS: Ninety-six chronic hepatitis C patients undergoing polyethylene glycol interferon (PEG-IFN) and ribavirin (RBV) therapy at Yucheng People's Hospital were assigned to an observation group, and 65 healthy volunteers were included in a control group. CD4+CD25+CD127low/-Treg ratio was detected at baseline and 24 wk after treatment. The changes of CD4+CD25+CD127low/- Treg ratio with different viral levels and liver injury were analyzed. According to whether the patients achieved a virologic response in 24 wk after withdrawal, they were divided into a sustained virologic response (SVR) group or a non-SVR group. The differences between the two groups in CD4+CD25+CD127low/-Treg ratios were analyzed at baseline and 24 wk after treatment.
RESULTS: The proportion of CD4+CD25+CD127low/- Treg cells at baseline in the observation group was significantly higher than that at baseline in the control group and that at the end of treatment in the observation group (P < 0.05). CD4+CD25+CD127low/- Treg cell ratios of patients with different load of HCV RNA were different. With the increase in HCV RNA load, CD4+CD25+CD127low/- Treg cell proportion continued to rise significantly (P < 0.05). At 24 wk after withdrawal, the rate of SVR in the observation group was 78.3%. The proportion of CD4+CD25+CD127low/- Treg cells in SVR patients was significantly lower than that of patients without SVR (P < 0.05) no matter whether at baseline or at 24 wk after treatment. Correlation analysis showed that the baseline CD4+CD25+CD127low/- Treg cell proportion was positively correlated with the liver function index AST/ALT (P < 0.05).
CONCLUSION: CD4+CD25+CD127low/- Treg cells may be involved in the pathogenesis of chronic hepatitis, and clinical detection of CD4+CD25+CD127low/- Treg cell ratio may be helpful for disease diagnosis and prognosis evaluation.
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41
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Zhou Y, Li GY, Ren JP, Wang L, Zhao J, Ning SB, Zhang Y, Lian JQ, Huang CX, Jia ZS, Moorman JP, Yao ZQ. Protection of CD4+ T cells from hepatitis C virus infection-associated senescence via ΔNp63-miR-181a-Sirt1 pathway. J Leukoc Biol 2016; 100:1201-1211. [PMID: 27354409 DOI: 10.1189/jlb.5a0316-119rr] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 06/06/2016] [Indexed: 12/16/2022] Open
Abstract
T cell dysfunction has a crucial role in establishing and maintaining viral persistence. We have previously shown a decline in miR-181a, which regulates CD4+ T cell responses via DUSP6 overexpression, in individuals with hepatitis C virus (HCV) infection. Here, we describe accelerated T cell senescence in HCV-infected individuals compared with age- and sex-matched healthy subjects. Mechanistic studies revealed that up-regulation of transcription factor ΔNp63 led to the decline of miR-181a expression, resulting in an overexpression of the antiaging protein Sirt1, in CD4+ T cells from HCV-infected individuals. Either reconstituting miR-181a or silencing ΔNp63 or Sirt1 expression in CD4+ T cells led to accelerated T cell senescence, as evidenced by an increased senescence-associated β-galactosidase (SA-β-gal) expression, shortened telomere length, and decreased EdU incorporation; this suggests that HCV-induced T cell senescence is counterregulated by the ΔNp63-miR-181a-Sirt1 pathway. An increase of IL-2 production was observed in these senescent CD4+ T cells and was driven by a markedly reduced frequency of Foxp3+ regulatory T (Treg) cells and increased number of Foxp3- effector T (Teff) cells upon manipulating the ΔNp63-miR-181a-Sirt1 pathway. In conclusion, these findings provide novel mechanistic insights into how HCV uses cellular senescent pathways to regulate T cell functions, revealing new targets for rejuvenating impaired T cell responses during chronic viral infection.
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Affiliation(s)
- Yun Zhou
- Center for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA.,Center of Diagnosis and Treatment for Infectious Diseases of Chinese PLA, Tangdu Hospital, Fourth Military Medical University, Xian, China
| | - Guang Y Li
- Center for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA.,Department of Internal Medicine, Division of Infectious Diseases, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA; and
| | - Jun P Ren
- Center for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA.,Department of Internal Medicine, Division of Infectious Diseases, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA; and
| | - Ling Wang
- Center for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA.,Department of Internal Medicine, Division of Infectious Diseases, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA; and
| | - Juan Zhao
- Center for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA.,Department of Internal Medicine, Division of Infectious Diseases, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA; and
| | - Shun B Ning
- Center for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA.,Department of Internal Medicine, Division of Infectious Diseases, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA; and
| | - Ying Zhang
- Center of Diagnosis and Treatment for Infectious Diseases of Chinese PLA, Tangdu Hospital, Fourth Military Medical University, Xian, China
| | - Jian Q Lian
- Center of Diagnosis and Treatment for Infectious Diseases of Chinese PLA, Tangdu Hospital, Fourth Military Medical University, Xian, China
| | - Chang X Huang
- Center of Diagnosis and Treatment for Infectious Diseases of Chinese PLA, Tangdu Hospital, Fourth Military Medical University, Xian, China
| | - Zhan S Jia
- Center of Diagnosis and Treatment for Infectious Diseases of Chinese PLA, Tangdu Hospital, Fourth Military Medical University, Xian, China;
| | - Jonathan P Moorman
- Center for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA.,Department of Internal Medicine, Division of Infectious Diseases, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA; and.,Hepatitis/AIDS (HCV/HIV) Program, James H. Quillen VA Medical Center, Department of Veterans Affairs, Johnson City, Tennessee, USA
| | - Zhi Q Yao
- Center for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA; .,Department of Internal Medicine, Division of Infectious Diseases, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee, USA; and.,Hepatitis/AIDS (HCV/HIV) Program, James H. Quillen VA Medical Center, Department of Veterans Affairs, Johnson City, Tennessee, USA
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42
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Ren JP, Zhao J, Dai J, Griffin JWD, Wang L, Wu XY, Morrison ZD, Li GY, El Gazzar M, Ning SB, Moorman JP, Yao ZQ. Hepatitis C virus-induced myeloid-derived suppressor cells regulate T-cell differentiation and function via the signal transducer and activator of transcription 3 pathway. Immunology 2016; 148:377-86. [PMID: 27149428 DOI: 10.1111/imm.12616] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 04/19/2016] [Accepted: 04/28/2016] [Indexed: 12/13/2022] Open
Abstract
T cells play a pivotal role in controlling viral infection; however, the precise mechanisms responsible for regulating T-cell differentiation and function during infections are incompletely understood. In this study, we demonstrated an expansion of myeloid-derived suppressor cells (MDSCs), in particular the monocytic MDSCs (M-MDSCs; CD14(+) CD33(+) CD11b(+) HLA-DR(-/low) ), in patients with chronic hepatitis C virus (HCV) infection. Notably, HCV-induced M-MDSCs express high levels of phosphorylated signal transducer and activator of transcription 3 (pSTAT3) and interleukin-10 (IL-10) compared with healthy subjects. Blocking STAT3 signalling reduced HCV-mediated M-MDSC expansion and decreased IL-10 expression. Importantly, we observed a significant increase in the numbers of CD4(+) CD25(+) Foxp3(+) regulatory T (Treg) cells following incubation of healthy peripheral blood mononuclear cells (PBMCs) with MDSCs derived from HCV-infected patients or treated with HCV core protein. In addition, depletion of MDSCs from PBMCs led to a significant reduction of Foxp3(+) Treg cells developed during chronic HCV infection. Moreover, depletion of MDSCs from PBMCs significantly increased interferon-γ production by CD4(+) T effector (Teff) cells derived from HCV patients. These results suggest that HCV-induced MDSCs promote Treg cell development and inhibit Teff cell function, suggesting a novel mechanism for T-cell regulation and a new strategy for immunotherapy against human viral diseases.
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Affiliation(s)
- Jun P Ren
- Center of Excellence for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Juan Zhao
- Center of Excellence for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Jun Dai
- Center of Excellence for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Jeddidiah W D Griffin
- Center of Excellence for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Ling Wang
- Center of Excellence for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Xiao Y Wu
- Center of Excellence for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Zheng D Morrison
- Center of Excellence for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Guang Y Li
- Center of Excellence for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Mohamed El Gazzar
- Center of Excellence for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Shun B Ning
- Center of Excellence for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Jonathan P Moorman
- Center of Excellence for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Hepatitis (HCV/HIV) Program, James H. Quillen VA Medical Center, Department of Veterans Affairs, Johnson City, TN, USA
| | - Zhi Q Yao
- Center of Excellence for Inflammation, Infectious Disease and Immunity, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Division of Infectious, Inflammatory and Immunologic Diseases, Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Hepatitis (HCV/HIV) Program, James H. Quillen VA Medical Center, Department of Veterans Affairs, Johnson City, TN, USA
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43
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Grakoui A, Crispe IN. Presentation of hepatocellular antigens. Cell Mol Immunol 2016; 13:293-300. [PMID: 26924525 PMCID: PMC4856799 DOI: 10.1038/cmi.2015.109] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 11/24/2015] [Accepted: 11/25/2015] [Indexed: 12/31/2022] Open
Abstract
The liver is an organ in which antigen-specific T-cell responses manifest a bias toward immune tolerance. This is clearly seen in the rejection of allogeneic liver transplants, and multiple other phenomena suggest that this effect is more general. These include tolerance toward antigens introduced via the portal vein, immune failure to several hepatotropic viruses, the lack of natural liver-stage immunity to malaria parasites, and the frequent metastasis of cancers to the liver. Here we review the mechanisms by which T cells engage with hepatocellular antigens, the context in which such encounters occur, and the mechanisms that act to suppress a full T-cell response. While many mechanisms play a role, we will argue that two important processes are the constraints on the cross-presentation of hepatocellular antigens, and the induction of negative feedback inhibition driven by interferons. The constant exposure of the liver to microbial products from the intestine may drive innate immunity, rendering the local environment unfavorable for specific T-cell responses through this mechanism. Nevertheless, tolerance toward hepatocellular antigens is not monolithic and under specific circumstances allows both effective immunity and immunopathology.
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Affiliation(s)
- Arash Grakoui
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine and Yerkes National Primate Research Center, Atlanta, GA, USA
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44
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Liu Y, Gao LF, Liang XH, Ma CH. Role of Tim-3 in hepatitis B virus infection: An overview. World J Gastroenterol 2016; 22:2294-2303. [PMID: 26900291 PMCID: PMC4735003 DOI: 10.3748/wjg.v22.i7.2294] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Revised: 10/08/2015] [Accepted: 12/21/2015] [Indexed: 02/06/2023] Open
Abstract
Hepatitis B virus (HBV) infection has received increasing public attention. HBV is the prototypical member of hepadnaviruses, which naturally infect only humans and great apes and induce the acute and persistent chronic infection of hepatocytes. A large body of evidence has demonstrated that dysfunction of the host anti-viral immune response is responsible for persistent HBV replication, unresolved inflammation and disease progression. Many regulatory factors are involved in immune dysfunction. Among these, T cell immunoglobulin domain and mucin domain-3 (Tim-3), one of the immune checkpoint proteins, has attracted increasing attention due to its critical role in regulating both adaptive and innate immune cells. In chronic HBV infection, Tim-3 expression is elevated in many types of immune cells, such as T helper cells, cytotoxic T lymphocytes, dendritic cells, macrophages and natural killer cells. Tim-3 over-expression is often accompanied by impaired function of the above-mentioned immunocytes, and Tim-3 inhibition can at least partially rescue impaired immune function and thus promote viral clearance. A better understanding of the regulatory role of Tim-3 in host immunity during HBV infection will shed new light on the mechanisms of HBV-related liver disease and suggest new therapeutic methods for intervention.
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New Mechanism of Hepatic Fibrogenesis: Hepatitis C Virus Infection Induces Transforming Growth Factor β1 Production through Glucose-Regulated Protein 94. J Virol 2015; 90:3044-55. [PMID: 26719248 DOI: 10.1128/jvi.02976-15] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 12/23/2015] [Indexed: 12/19/2022] Open
Abstract
UNLABELLED Hepatitis C virus (HCV) is one of the leading causes of chronic liver inflammatory disease (hepatitis), which often leads to more severe diseases, such as liver fibrosis, cirrhosis, and hepatocellular carcinoma. Liver fibrosis, in particular, is a major pathogenic consequence of HCV infection, and transforming growth factor β1 (TGF-β1) plays a key role in its pathogenesis. Several HCV proteins have been suggested to either augment or suppress the expression of TGF-β1 by HCV-infected cells. Here, we report that TGF-β1 levels are elevated in HCV-infected hepatocytes cultured in vitro and in liver tissue of HCV patients. Notably, the level of TGF-β1 in media from in vitro-cultured HCV-infected hepatocytes was high enough to activate primary hepatic stellate cells isolated from rats. This indicates that TGF-β1 secreted by HCV-infected hepatocytes is likely to play a key role in the liver fibrosis observed in HCV patients. Moreover, we showed that HCV E2 protein triggers the production of TGF-β1 by HCV-infected cells through overproduction of glucose-regulated protein 94 (GRP94). IMPORTANCE Hepatic fibrosis is a critical step in liver cirrhosis caused by hepatitis C virus infection. It is already known that immune cells, including Kupffer cells, mediate liver fibrosis. Recently, several papers have suggested that HCV-infected hepatocytes also significantly produce TGF-β1. Here, we provide the first examination of TGF-β1 levels in the hepatocytes of HCV patients. Using an HCV culture system, we showed that HCV infection increases TGF-β1 production in hepatocytes. Furthermore, we confirmed that the amount of TGF-β1 secreted by HCV-infected hepatocytes was sufficient to activate primary hepatic stellate cells. To understand the molecular basis of TGF-β1 production in HCV-infected hepatocytes, we used HCV replicons and various stable cell lines. Finally, we elucidated that HCV E2 triggered TGF-β1 secretion via GRP94 mediated NF-κB activation. This study contributes to the understanding of liver fibrosis by HCV and suggests a new potential target (GRP94) for blocking liver cirrhosis in HCV patients.
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Martínez-Esparza M, Tristán-Manzano M, Ruiz-Alcaraz AJ, García-Peñarrubia P. Inflammatory status in human hepatic cirrhosis. World J Gastroenterol 2015; 21:11522-11541. [PMID: 26556984 PMCID: PMC4631958 DOI: 10.3748/wjg.v21.i41.11522] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 07/31/2015] [Accepted: 09/30/2015] [Indexed: 02/06/2023] Open
Abstract
This review focuses on new findings about the inflammatory status involved in the development of human liver cirrhosis induced by the two main causes, hepatitis C virus (HCV) infection and chronic alcohol abuse, avoiding results obtained from animal models. When liver is faced to a persistent and/or intense local damage the maintained inflammatory response gives rise to a progressive replacement of normal hepatic tissue by non-functional fibrotic scar. The imbalance between tissue regeneration and fibrosis will determine the outcome toward health recovery or hepatic cirrhosis. In all cases progression toward liver cirrhosis is caused by a dysregulation of mechanisms that govern the balance between activation/homeostasis of the immune system. Detecting differences between the inflammatory status in HCV-induced vs alcohol-induced cirrhosis could be useful to identify specific targets for preventive and therapeutic intervention in each case. Thus, although survival of patients with alcoholic cirrhosis seems to be similar to that of patients with HCV-related cirrhosis (HCV-C), there are important differences in the altered cellular and molecular mechanisms implicated in the progression toward human liver cirrhosis. The predominant features of HCV-C are more related with those that allow viral evasion of the immune defenses, especially although not exclusively, inhibition of interferons secretion, natural killer cells activation and T cell-mediated cytotoxicity. On the contrary, the inflammatory status of alcohol-induced cirrhosis is determined by the combined effect of direct hepatotoxicity of ethanol metabolites and increases of the intestinal permeability, allowing bacteria and bacterial products translocation, into the portal circulation, mesenteric lymph nodes and peritoneal cavity. This phenomenon generates a stronger pro-inflammatory response compared with HCV-related cirrhosis. Hence, therapeutic intervention in HCV-related cirrhosis must be mainly focused to counteract HCV-immune system evasion, while in the case of alcohol-induced cirrhosis it must try to break the inflammatory loop established at the gut-mesenteric lymph nodes-peritoneal-systemic axis.
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Barjon C, Dahlqvist G, Calmus Y, Conti F. Role of regulatory T-cells during hepatitis C infection: From the acute phase to post-transplantation recurrence. Dig Liver Dis 2015. [PMID: 26216068 DOI: 10.1016/j.dld.2015.06.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Hepatitis C viral infection persists and becomes chronic in a majority of affected individuals. Numerous factors have been described to explain how the virus manages to escape the host immune system. One important escape mechanism is the increase in regulatory T cells induced by the virus. In this review, we will focus on the status of regulatory T cells throughout the natural history of hepatitis C infection and after liver transplantation. The molecular mechanisms involved in increasing the number of regulatory T cells are also discussed, as are data regarding the impact of regulatory T-cells on hepatic fibrosis in the context of hepatitis C viral infection.
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Affiliation(s)
- Clément Barjon
- Sorbonne University, UPMC Univ. Paris 6, Inserm UMRS 938, CDR Saint-Antoine, Paris, France.
| | - Géraldine Dahlqvist
- Sorbonne University, UPMC Univ. Paris 6, Inserm UMRS 938, CDR Saint-Antoine, Paris, France
| | - Yvon Calmus
- Sorbonne University, UPMC Univ. Paris 6, Inserm UMRS 938, CDR Saint-Antoine, Paris, France; Department of Hepatology and Gastroenterology, AP-HP, Pitié-Salpêtrière Hospital, Paris, France
| | - Filomena Conti
- Sorbonne University, UPMC Univ. Paris 6, Inserm UMRS 938, CDR Saint-Antoine, Paris, France; Department of Hepatology and Gastroenterology, AP-HP, Pitié-Salpêtrière Hospital, Paris, France
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48
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Re-wiring regulatory cell networks in immunity by galectin-glycan interactions. FEBS Lett 2015; 589:3407-18. [PMID: 26352298 DOI: 10.1016/j.febslet.2015.08.037] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 08/27/2015] [Accepted: 08/28/2015] [Indexed: 01/01/2023]
Abstract
Programs that control immune cell homeostasis are orchestrated through the coordinated action of a number of regulatory cell populations, including regulatory T cells, regulatory B cells, myeloid-derived suppressor cells, alternatively-activated macrophages and tolerogenic dendritic cells. These regulatory cell populations can prevent harmful inflammation following completion of protective responses and thwart the development of autoimmune pathology. However, they also have a detrimental role in cancer by favoring escape from immune surveillance. One of the hallmarks of regulatory cells is their remarkable plasticity as they can be positively or negatively modulated by a plethora of cytokines, growth factors and co-stimulatory signals that tailor their differentiation, stability and survival. Here we focus on the emerging roles of galectins, a family of highly conserved glycan-binding proteins in regulating the fate and function of regulatory immune cell populations, both of lymphoid and myeloid origins. Given the broad distribution of circulating and tissue-specific galectins, understanding the relevance of lectin-glycan interactions in shaping regulatory cell compartments will contribute to the design of novel therapeutic strategies aimed at modulating their function in a broad range of immunological disorders.
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49
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Jiang X, Yu J, Shi Q, Xiao Y, Wang W, Chen G, Zhao Z, Wang R, Xiao H, Hou C, Feng J, Ma Y, Shen B, Wang L, Li Y, Han G. Tim-3 promotes intestinal homeostasis in DSS colitis by inhibiting M1 polarization of macrophages. Clin Immunol 2015. [PMID: 26208474 DOI: 10.1016/j.clim.2015.07.008] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Tim-3 is involved in the physiopathology of inflammatory bowel disease (IBD), but the underlying mechanism is unknown. Here, we demonstrated that, in mouse with DSS colitis, Tim-3 inhibited the polarization of pathogenic pro-inflammatory M1 macrophages, while Tim-3 downregulation or blockade resulted in an increased M1 response. Adoptive transfer of Tim-3-silenced macrophages worsened DSS colitis and enhanced inflammation, while Tim-3 overexpression attenuated DSS colitis by decreasing the M1 macrophage response. Co-culture of Tim-3-overexpressing macrophages with intestinal lymphocytes decreased the pro-inflammatory response. Tim-3 shaped intestinal macrophage polarization may be TLR-4 dependent since Tim-3 blockade failed to exacerbate colitis or increase M1 macrophage response in the TLR-4 KO model. Finally, Tim-3 signaling inhibited phosphorylation of IRF3, a TLR-4 downstream transcriptional factor regulating macrophage polarization. A better understanding of this pathway may shed new light on colitis pathogenesis and result in a new therapeutic strategy.
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Affiliation(s)
- Xingwei Jiang
- Department of Immunology, Beijing Institute of Basic Medical Sciences, Beijing 100850, China; State Key laboratory of Toxicology and Medical Countermeasures, Beijing 100850, China; Beijing Institute of Transfusion Medicine, Beijing 100850, China
| | - Jiahui Yu
- Institute of Immunology, Medical School of Henan University, Kaifeng 475001, China
| | - Qingzhu Shi
- Department of Immunology, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Yan Xiao
- Department of Respiratory Diseases, First Affiliated Hospital of the Chinese PLA General Hospital, Beijing 100037, China
| | - Wei Wang
- Department of Immunology, Beijing Institute of Basic Medical Sciences, Beijing 100850, China; Institute of Immunology, Medical School of Henan University, Kaifeng 475001, China
| | - Guojiang Chen
- Department of Immunology, Beijing Institute of Basic Medical Sciences, Beijing 100850, China.
| | - Zhi Zhao
- Department of Pathology, Zhengzhou People's Hospital, YIHE Hospital, Zhengzhou 450000, China
| | - Renxi Wang
- Department of Immunology, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - He Xiao
- Department of Immunology, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Chunmei Hou
- Department of Immunology, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Jiannan Feng
- Department of Immunology, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Yuanfang Ma
- Institute of Immunology, Medical School of Henan University, Kaifeng 475001, China
| | - Beifen Shen
- Department of Immunology, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Lili Wang
- State Key laboratory of Toxicology and Medical Countermeasures, Beijing 100850, China
| | - Yan Li
- Department of Immunology, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Gencheng Han
- Department of Immunology, Beijing Institute of Basic Medical Sciences, Beijing 100850, China.
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50
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Cheng YQ, Ren JP, Zhao J, Wang JM, Zhou Y, Li GY, Moorman JP, Yao ZQ. MicroRNA-155 regulates interferon-γ production in natural killer cells via Tim-3 signalling in chronic hepatitis C virus infection. Immunology 2015; 145:485-97. [PMID: 25772938 DOI: 10.1111/imm.12463] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 02/20/2015] [Accepted: 03/11/2015] [Indexed: 12/17/2022] Open
Abstract
Host immune responses must be tightly regulated by an intricate balance between positive and negative signals while fighting pathogens; persistent pathogens may usurp these regulatory mechanisms to dampen host immunity to facilitate survival in vivo. Here we report that Tim-3, a negative signalling molecule expressed on monocytes and T cells, is up-regulated on natural killer (NK) cells in individuals chronically infected with hepatitis C virus (HCV). Additionally, the transcription factor T-bet was also found to be up-regulated and associated with Tim-3 expression in NK cells during chronic HCV infection. MicroRNA-155 (miR-155), an miRNA that inhibits signalling proteins involved in immune responses, was down-regulated in NK cells by HCV infection. This Tim-3/T-bet over-expression and miR-155 inhibition were recapitulated in vitro by incubating primary NK cells or NK92 cell line with Huh-7 hepatocytes expressing HCV. Reconstitution of miR-155 in NK cells from HCV-infected patients led to a decrease in T-bet/Tim-3 expression and an increase in interferon-γ production. Blocking Tim-3 signalling also enhanced interferon-γ production in NK cells by improving signal transducer and activator of transcription-5 phosphorylation. These data indicate that HCV-induced, miR-155-regulated Tim-3 expression regulates NK cell function, suggesting a novel mechanism for balancing immune clearance and immune injury during chronic viral infection.
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Affiliation(s)
- Yong Q Cheng
- Center for Inflammation, Infectious Disease and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,International Centre for Diagnosis and Treatment of Liver Diseases, Beijing, China
| | - Jun P Ren
- Center for Inflammation, Infectious Disease and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Juan Zhao
- Center for Inflammation, Infectious Disease and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Jia M Wang
- Center for Inflammation, Infectious Disease and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Department of Biochemistry and Molecular Biology, Soochow University School of Medicine, Suzhou, China
| | - Yun Zhou
- Center for Inflammation, Infectious Disease and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,Centre of Diagnosis and Treatment for Infectious Diseases of Chinese PLA, Tangdu Hospital, Fourth Military Medical University, Xian, China
| | - Guang Y Li
- Center for Inflammation, Infectious Disease and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA
| | - Jonathan P Moorman
- Center for Inflammation, Infectious Disease and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,HCV/HIV Program, James H. Quillen VA Medical Center, Johnson City, TN, USA
| | - Zhi Q Yao
- Center for Inflammation, Infectious Disease and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, USA.,HCV/HIV Program, James H. Quillen VA Medical Center, Johnson City, TN, USA
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