151
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Montano-Loza AJ, Czaja AJ. Cell mediators of autoimmune hepatitis and their therapeutic implications. Dig Dis Sci 2015; 60:1528-42. [PMID: 25487192 DOI: 10.1007/s10620-014-3473-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 11/27/2014] [Indexed: 12/12/2022]
Abstract
Autoimmune hepatitis is associated with interactive cell populations of the innate and adaptive immune systems, and these populations are amenable to therapeutic manipulation. The goals of this review are to describe the key cell populations implicated in autoimmune hepatitis and to identify investigational opportunities to develop cell-directed therapies for this disease. Studies cited in PubMed from 1972 to 2014 for autoimmune hepatitis, innate and adaptive immune systems, and therapeutic interventions were examined. Dendritic cells can promote immune tolerance to self-antigens, present neo-antigens that enhance the immune response, and expand the regulatory T cell population. Natural killer cells can secrete pro-inflammatory and anti-inflammatory cytokines and modulate the activity of dendritic cells and antigen-specific T lymphocytes. T helper 2 lymphocytes can inhibit the cytotoxic activities of T helper 1 lymphocytes and limit the expansion of T helper 17 lymphocytes. T helper 17 lymphocytes can promote inflammatory activity, and they can also up-regulate genes that protect against oxidative stress and hepatocyte apoptosis. Natural killer T cells can expand the regulatory T cell population; gamma delta lymphocytes can secrete interleukin-10, stimulate hepatic regeneration, and induce the apoptosis of hepatic stellate cells; and antigen-specific regulatory T cells can dampen immune cell proliferation and function. Pharmacological agents, neutralizing antibodies, and especially the adoptive transfer of antigen-specific regulatory T cells that have been freshly generated ex vivo are evolving as management strategies. The cells within the innate and adaptive immune systems are key contributors to the occurrence of autoimmune hepatitis, and they are attractive therapeutic targets.
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Affiliation(s)
- Aldo J Montano-Loza
- Division of Gastroenterology and Liver Unit, University of Alberta Hospital, Edmonton, AB, Canada
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152
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Yokota S, Yoshida O, Dou L, Spadaro AV, Isse K, Ross MA, Stolz DB, Kimura S, Du Q, Demetris AJ, Thomson AW, Geller DA. IRF-1 promotes liver transplant ischemia/reperfusion injury via hepatocyte IL-15/IL-15Rα production. THE JOURNAL OF IMMUNOLOGY 2015; 194:6045-56. [PMID: 25964490 DOI: 10.4049/jimmunol.1402505] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 04/15/2015] [Indexed: 01/08/2023]
Abstract
Ischemia and reperfusion (I/R) injury following liver transplantation (LTx) is an important problem that significantly impacts clinical outcomes. IFN regulatory factor-1 (IRF-1) is a nuclear transcription factor that plays a critical role in liver injury. Our objective was to determine the immunomodulatory role of IRF-1 during I/R injury following allogeneic LTx. IRF-1 was induced in liver grafts immediately after reperfusion in both human and mouse LTx. IRF-1 contributed significantly to I/R injury because IRF-1-knockout (KO) grafts displayed much less damage as assessed by serum alanine aminotransferase and histology. In vitro, IRF-1 regulated both constitutive and induced expression of IL-15, as well as IL-15Rα mRNA expression in murine hepatocytes and liver dendritic cells. Specific knockdown of IRF-1 in human primary hepatocytes gave similar results. In addition, we identified hepatocytes as the major producer of soluble IL-15/IL-15Rα complexes in the liver. IRF-1-KO livers had significantly reduced NK, NKT, and CD8(+) T cell numbers, whereas rIL-15/IL-15Rα restored these immune cells, augmented cytotoxic effector molecules, promoted systemic inflammatory responses, and exacerbated liver injury in IRF-1-KO graft recipients. These results indicate that IRF-1 promotes LTx I/R injury via hepatocyte IL-15/IL-15Rα production and suggest that targeting IRF-1 and IL-15/IL-15Rα may be effective in reducing I/R injury associated with LTx.
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Affiliation(s)
- Shinichiro Yokota
- Thomas E. Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Osamu Yoshida
- Thomas E. Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Lei Dou
- Thomas E. Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Anthony V Spadaro
- Thomas E. Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Kumiko Isse
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Mark A Ross
- Center for Biologic Imaging, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Donna B Stolz
- Center for Biologic Imaging, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Shoko Kimura
- Thomas E. Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Qiang Du
- Thomas E. Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Anthony J Demetris
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261
| | - Angus W Thomson
- Thomas E. Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261; Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261; and
| | - David A Geller
- Thomas E. Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261; Liver Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA 15261
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153
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Lee YA, Wallace MC, Friedman SL. Pathobiology of liver fibrosis: a translational success story. Gut 2015; 64:830-41. [PMID: 25681399 PMCID: PMC4477794 DOI: 10.1136/gutjnl-2014-306842] [Citation(s) in RCA: 635] [Impact Index Per Article: 70.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 01/07/2015] [Indexed: 12/12/2022]
Abstract
Reversibility of hepatic fibrosis and cirrhosis following antiviral therapy for hepatitis B or C has advanced the prospect of developing antifibrotic therapies for patients with chronic liver diseases, especially non-alcoholic steatohepatitis. Mechanisms of fibrosis have focused on hepatic stellate cells, which become fibrogenic myofibroblasts during injury through 'activation', and are at the nexus of efforts to define novel drug targets. Recent studies have clarified pathways of stellate cell gene regulation and epigenetics, emerging pathways of fibrosis regression through the recruitment and amplification of fibrolytic macrophages, nuanced responses of discrete inflammatory cell subsets and the identification of the 'ductular reaction' as a marker of severe injury and repair. Based on our expanded knowledge of fibrosis pathogenesis, attention is now directed towards strategies for antifibrotic therapies and regulatory challenges for conducting clinical trials with these agents. New therapies are attempting to: 1) Control or cure the primary disease or reduce tissue injury; 2) Target receptor-ligand interactions and intracellular signaling; 3) Inhibit fibrogenesis; and 4) Promote resolution of fibrosis. Progress is urgently needed in validating non-invasive markers of fibrosis progression and regression that can supplant biopsy and shorten the duration of clinical trials. Both scientific and clinical challenges remain, however the past three decades of steady progress in understanding liver fibrosis have contributed to an emerging translational success story, with realistic hopes for antifibrotic therapies to treat patients with chronic liver disease in the near future.
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Affiliation(s)
- Youngmin A Lee
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Michael C Wallace
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Scott L Friedman
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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154
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Chen X, Ren Z, Li C, Guo F, Zhou D, Jiang J, Chen X, Sun J, Yao C, Zheng S. Preclinical Study of Locoregional Therapy of Hepatocellular Carcinoma by Bioelectric Ablation with Microsecond Pulsed Electric Fields (μsPEFs). Sci Rep 2015; 5:9851. [PMID: 25928327 PMCID: PMC4415577 DOI: 10.1038/srep09851] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 03/19/2015] [Indexed: 12/13/2022] Open
Abstract
Unresectable hepatocellular carcinoma (HCC) needs locoregional ablation as a curative
or downstage therapy. Microsecond Pulsed Electric Fields (μsPEFs) is an
option. A xenograft tumor model was set up on 48 nude mice by injecting human
hepatocellular carcinoma Hep3B cells subcutaneously. The tumor-bearing mice were
randomly divided into 3 groups: μsPEFs treated, sham and control group.
μsPEFs group was treated by μsPEFs twice in 5 days.
Tumor volume, survival, pathology, mitochondria function and cytokines were followed
up. μsPEFs was also conducted on 3 swine to determine impact on organ
functions. The tumors treated by μsPEFs were completely eradicated while
tumors in control and sham groups grew up to 2 cm3 in
3 weeks. The μsPEFs-treated group indicated mitochondrial
damage and tumor necrosis as shown in JC-1 test, flow cytometry, H&E
staining and TEM. μsPEFs activates CD56+ and CD68+ cells and inhibits
tumor proliferating cell nuclear antigen. μsPEFs inhibits HCC growth in
the nude mice by causing mitochondria damage, tumor necrosis and non-specific
inflammation. μsPEFs treats porcine livers without damaging vital organs.
μsPEFs is a feasible minimally invasive locoregional ablation option.
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Affiliation(s)
- Xinhua Chen
- 1] The Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310003, China [2] Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang, 310003, China
| | - Zhigang Ren
- 1] The Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310003, China [2] Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang, 310003, China
| | - Chengxiang Li
- The State Key Laboratory of Power Transmission Equipment &System Security and New Technology, Chongqing University, Chongqing, 400030, China
| | - Fei Guo
- The State Key Laboratory of Power Transmission Equipment &System Security and New Technology, Chongqing University, Chongqing, 400030, China
| | - Dianbo Zhou
- The State Key Laboratory of Power Transmission Equipment &System Security and New Technology, Chongqing University, Chongqing, 400030, China
| | - Jianwen Jiang
- 1] The Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310003, China [2] Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang, 310003, China
| | - Xinmei Chen
- The Department of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, 250014, China
| | - Jihong Sun
- The Department of Radiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310003, China
| | - Chenguo Yao
- The State Key Laboratory of Power Transmission Equipment &System Security and New Technology, Chongqing University, Chongqing, 400030, China
| | - Shusen Zheng
- 1] The Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, 310003, China [2] Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, Zhejiang, 310003, China
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155
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Habib SM, Abrahams AC, Korte MR, Zietse R, de Vogel LL, Boer WH, Dendooven A, Clahsen-van Groningen MC, Betjes MGH. CD4-Positive T Cells and M2 Macrophages Dominate the Peritoneal Infiltrate of Patients with Encapsulating Peritoneal Sclerosis. PLoS One 2015; 10:e0120174. [PMID: 25910222 PMCID: PMC4409209 DOI: 10.1371/journal.pone.0120174] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Accepted: 02/03/2015] [Indexed: 11/18/2022] Open
Abstract
Background Encapsulating peritoneal sclerosis (EPS) is a severe complication of peritoneal dialysis (PD). Previously, it has been shown that infiltrating CD4-positive T cells and M2 macrophages are associated with several fibrotic conditions. Therefore, the characteristics of the peritoneal cell infiltrate in EPS may be of interest to understand EPS pathogenesis. In this study, we aim to elucidate the composition of the peritoneal cell infiltrate in EPS patients and relate the findings to clinical outcome. Study Design, Setting, and Participants We studied peritoneal membrane biopsies of 23 EPS patients and compared them to biopsies of 15 PD patients without EPS. The cellular infiltrate was characterized by immunohistochemistry to detect T cells(CD3-positive), CD4-positive (CD4+) and CD8-positive T cell subsets, B cells(CD20-positive), granulocytes(CD15-positive), macrophages(CD68-positive), M1(CD80-positive), and M2(CD163-positive) macrophages. Tissues were analysed using digital image analysis. Kaplan-Meier survival analysis was performed to investigate the survival in the different staining groups. Results The cellular infiltrate in EPS biopsies was dominated by mononuclear cells. For both CD3 and CD68, the median percentage of area stained was higher in biopsies of EPS as opposed to non-EPS patients (p<0.001). EPS biopsies showed a higher percentage of area stained for CD4 (1.29%(0.61-3.20)) compared to CD8 (0.71%(0.46-1.01), p = 0.04), while in the non-EPS group these cells were almost equally represented (respectively 0.28%(0.05-0.83) versus 0.22%(0.17-0.43), p = 0.97). The percentage of area stained for both CD80 and CD163 was higher in EPS than in non-EPS biopsies (p<0.001), with CD163+ cells being the most abundant phenotype. Virtually no CD20-positive and CD15-positive cells were present in biopsies of a subgroup of EPS patients. No relation was found between the composition of the mononuclear cell infiltrate and clinical outcome. Conclusions A characteristic mononuclear cell infiltrate consisting of CD4+ and CD163+ cells dominates the peritoneum of EPS patients. These findings suggest a role for both CD4+ T cells and M2 macrophages in the pathogenesis of EPS.
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Affiliation(s)
- Sayed M. Habib
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus Medical Center, Rotterdam, The Netherlands
- * E-mail:
| | - Alferso C. Abrahams
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Mario R. Korte
- Department of Internal Medicine, Division of Nephrology, Albert Schweitzer Hospital, Dordrecht, The Netherlands
| | - Robert Zietse
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus Medical Center, Rotterdam, The Netherlands
| | | | - Walther H. Boer
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Amélie Dendooven
- Department of Pathology, University Medical Center Utrecht, Utrecht The Netherlands
| | | | - Michiel G. H. Betjes
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus Medical Center, Rotterdam, The Netherlands
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156
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Duval F, Moreno-Cuevas JE, González-Garza MT, Maldonado-Bernal C, Cruz-Vega DE. Liver fibrosis and mechanisms of the protective action of medicinal plants targeting inflammation and the immune response. Int J Inflam 2015; 2015:943497. [PMID: 25954568 PMCID: PMC4411506 DOI: 10.1155/2015/943497] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 11/29/2014] [Indexed: 12/12/2022] Open
Abstract
Inflammation is a central feature of liver fibrosis as suggested by its role in the activation of hepatic stellate cells leading to extracellular matrix deposition. During liver injury, inflammatory cells are recruited in the injurious site through chemokines attraction. Thus, inflammation could be a target to reduce liver fibrosis. The pandemic trend of obesity, combined with the high incidence of alcohol intake and viral hepatitis infections, highlights the urgent need to find accessible antifibrotic therapies. Medicinal plants are achieving popularity as antifibrotic agents, supported by their safety, cost-effectiveness, and versatility. The aim of this review is to describe the role of inflammation and the immune response in the pathogenesis of liver fibrosis and detail the mechanisms of inhibition of both events by medicinal plants in order to reduce liver fibrosis.
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Affiliation(s)
- Florent Duval
- Catedra de Terapia Celular, Escuela de Medicina, Tecnológico de Monterrey, Avenida Morones Prieto 3000 Pte., 64710 Monterrey, NL, Mexico
| | - Jorge E. Moreno-Cuevas
- Catedra de Terapia Celular, Escuela de Medicina, Tecnológico de Monterrey, Avenida Morones Prieto 3000 Pte., 64710 Monterrey, NL, Mexico
| | - María Teresa González-Garza
- Catedra de Terapia Celular, Escuela de Medicina, Tecnológico de Monterrey, Avenida Morones Prieto 3000 Pte., 64710 Monterrey, NL, Mexico
| | - Carmen Maldonado-Bernal
- Laboratorio de Investigación en Inmunología y Proteómica, Hospital Infantil de México Federico Gómez, Calle Dr. Márquez 162, 06720 Ciudad de México, DF, Mexico
| | - Delia Elva Cruz-Vega
- Catedra de Terapia Celular, Escuela de Medicina, Tecnológico de Monterrey, Avenida Morones Prieto 3000 Pte., 64710 Monterrey, NL, Mexico
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157
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Yimin, Kohanawa M, Zhao S, Li M, Kuge Y, Tamaki N, Watanabe M. Regulatory Effect of Interleukin-4 in the Innate Inflammatory Response toRhodococcus aurantiacusInfection in Mice. J Interferon Cytokine Res 2015; 35:222-31. [DOI: 10.1089/jir.2014.0107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Yimin
- Department of Advanced Medicine, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masashi Kohanawa
- Department of Advanced Medicine, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Songji Zhao
- Department of Tracer Kinetics and Bioanalysis, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Minqi Li
- Department of Bone Metabolism, School of Stomatology, Shandong University, Jinan, China
| | - Yuji Kuge
- Central Institute of Isotope Science, Hokkaido University, Sapporo, Japan
| | - Nagara Tamaki
- Department of Nuclear Medicine, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masahiko Watanabe
- Department of Advanced Medicine, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
- Department of Anatomy, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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158
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Seki E, Schwabe RF. Hepatic inflammation and fibrosis: functional links and key pathways. Hepatology 2015; 61:1066-79. [PMID: 25066777 PMCID: PMC4306641 DOI: 10.1002/hep.27332] [Citation(s) in RCA: 649] [Impact Index Per Article: 72.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 07/16/2014] [Indexed: 02/06/2023]
Abstract
Inflammation is one of the most characteristic features of chronic liver disease of viral, alcoholic, fatty, and autoimmune origin. Inflammation is typically present in all disease stages and associated with the development of fibrosis, cirrhosis, and hepatocellular carcinoma. In the past decade, numerous studies have contributed to improved understanding of the links between hepatic inflammation and fibrosis. Here, we review mechanisms that link inflammation with the development of liver fibrosis, focusing on the role of inflammatory mediators in hepatic stellate cell (HSC) activation and HSC survival during fibrogenesis and fibrosis regression. We will summarize the contributions of different inflammatory cells, including hepatic macrophages, T and B lymphocytes, natural killer cells and platelets, as well as key effectors, such as cytokines, chemokines, and damage-associated molecular patterns. Furthermore, we will discuss the relevance of inflammatory signaling pathways for clinical liver disease and for the development of antifibrogenic strategies.
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Affiliation(s)
- Ekihiro Seki
- Department of Medicine, University of California, San Diego, School
of Medicine, La Jolla, CA 92093, USA,Surgery, University of California, San Diego, School of Medicine, La
Jolla, CA 92093, USA
| | - Robert F. Schwabe
- Department of Medicine, Columbia University, College of Physicians
and Surgeons, New York, NY 10032, USA,Institute of Human Nutrition, Columbia University, College of
Physicians and Surgeons, New York, NY 10032, USA
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159
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Zhang P, Lu X, Tao K, Shi L, Li W, Wang G, Wu K. Siglec-10 is associated with survival and natural killer cell dysfunction in hepatocellular carcinoma. J Surg Res 2015; 194:107-13. [DOI: 10.1016/j.jss.2014.09.035] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 09/24/2014] [Accepted: 09/25/2014] [Indexed: 12/29/2022]
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160
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Sadegh L, Chen PW, Brown JR, Han Z, Niederkorn JY. NKT cells act through third party bone marrow-derived cells to suppress NK cell activity in the liver and exacerbate hepatic melanoma metastases. Int J Cancer 2015; 137:1085-94. [PMID: 25683463 DOI: 10.1002/ijc.29480] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 01/19/2015] [Indexed: 12/15/2022]
Abstract
Uveal melanoma (UM) is the most common intraocular tumor in adults and liver metastasis is the leading cause of death in UM patients. We have previously shown that NKT cell-deficient mice develop significantly fewer liver metastases from intraocular melanomas than do wild-type (WT) mice. Here, we examine the interplay between liver NKT cells and NK cells in resistance to liver metastases from intraocular melanomas. NKT cell-deficient CD1d(-/-) mice and WT C57BL/6 mice treated with anti-CD1d antibody developed significantly fewer liver metastases than WT mice following either intraocular or intrasplenic injection of B16LS9 melanoma cells. The increased number of metastases in WT mice was associated with reduced liver NK cytotoxicity and decreased production of IFN-γ. However, liver NK cell-mediated cytotoxic activity was identical in non-tumor bearing NKT cell-deficient mice and WT mice, indicating that liver metastases were crucial for the suppression of liver NK cells. Depressed liver NK cytotoxicity in WT mice was associated with production of IL-10 by bone marrow-derived liver cells that were neither Kupffer cells nor myeloid-derived suppressor cells and by increased IL-10 receptor expression on liver NK cells. IL-10(-/-) mice had significantly fewer liver metastases than WT mice, but were not significantly different from NKT cell-deficient mice. Thus, development of melanoma liver metastases is associated with upregulation of IL-10 in the liver and an elevated expression of IL-10 receptor on liver NK cells. This impairment of liver NK activity is NKT cell-dependent and only occurs in hosts with melanoma liver metastases.
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Affiliation(s)
- Leila Sadegh
- Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Peter W Chen
- Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Joseph R Brown
- Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Zhiqiang Han
- Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Jerry Y Niederkorn
- Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, TX
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161
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De Re V, Caggiari L, De Zorzi M, Repetto O, Zignego AL, Izzo F, Tornesello ML, Buonaguro FM, Mangia A, Sansonno D, Racanelli V, De Vita S, Pioltelli P, Vaccher E, Beretta M, Mazzaro C, Libra M, Gini A, Zucchetto A, Cannizzaro R, De Paoli P. Genetic diversity of the KIR/HLA system and susceptibility to hepatitis C virus-related diseases. PLoS One 2015; 10:e0117420. [PMID: 25700262 PMCID: PMC4336327 DOI: 10.1371/journal.pone.0117420] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 12/21/2014] [Indexed: 01/22/2023] Open
Abstract
Background The variability in the association of host innate immune response to Hepatitis C virus (HCV) infection requires ruling out the possible role of host KIR and HLA genotypes in HCV-related disorders: therefore, we therefore explored the relationships between KIR/HLA genotypes and chronic HCV infection (CHC) as they relate to the risk of HCV-related hepatocarcinoma (HCC) or lymphoproliferative disease progression. Methods and Findings We analyzed data from 396 HCV-positive patients with CHC (n = 125), HCC (118), and lymphoproliferative diseases (153), and 501 HCV-negative patients. All were HIV and HBV negative. KIR-SSO was used to determine the KIR typing. KIR2DL5 and KIR2DS4 variants were performed using PCR and GeneScan analysis. HLA/class-I genotyping was performed using PCR-sequence-based typing. The interaction between the KIR gene and ligand HLA molecules was investigated. Differences in frequencies were estimated using Fisher’s exact test, and Cochran-Armitage trend test. The non-random association of KIR alleles was estimated using the linkage disequilibrium test. We found an association of KIR2DS2/KIR2DL2 genes, with the HCV-related lymphoproliferative disorders. Furthermore, individuals with a HLA-Bw6 KIR3DL1+ combination of genes showed higher risk of developing lymphoma than cryoglobulinemia. KIR2DS3 gene was found to be the principal gene associated with chronic HCV infection, while a reduction of HLA-Bw4 + KIR3DS1+ was associated with an increased risk of developing HCC. Conclusions Our data highlight a role of the innate-system in developing HCV-related disorders and specifically KIR2DS3 and KIR2D genes demonstrated an ability to direct HCV disease progression, and mainly towards lymphoproliferative disorders. Moreover the determination of KIR3D/HLA combination of genes direct the HCV progression towards a lymphoma rather than an hepatic disease. In this contest IFN-α therapy, a standard therapy for HCV-infection and lymphoproliferative diseases, known to be able to transiently enhance the cytotoxicity of NK-cells support the role of NK cells to counterstain HCV-related and lymphoproliferative diseases.
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Affiliation(s)
- Valli De Re
- Facility Bio-proteomica/Dir. Sc, CRO National Cancer Institute, Aviano, Pordenone, Italy
- * E-mail:
| | - Laura Caggiari
- Facility Bio-proteomica/Dir. Sc, CRO National Cancer Institute, Aviano, Pordenone, Italy
| | - Mariangela De Zorzi
- Facility Bio-proteomica/Dir. Sc, CRO National Cancer Institute, Aviano, Pordenone, Italy
| | - Ombretta Repetto
- Facility Bio-proteomica/Dir. Sc, CRO National Cancer Institute, Aviano, Pordenone, Italy
| | - Anna Linda Zignego
- Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Francesco Izzo
- Hepatobiliary Unit, National Cancer Institute “Fondazione Pascale”, Naples, Italy
| | - Maria Lina Tornesello
- Molecular Biology and Viral Oncology, National Cancer Institute “Fondazione Pascale”, Naples, Italy
| | - Franco Maria Buonaguro
- Molecular Biology and Viral Oncology, National Cancer Institute “Fondazione Pascale”, Naples, Italy
| | - Alessandra Mangia
- Liver, IRCCS Casa Sollievo della Sofferenza Hospital, San Giovanni Rotondo, Italy
| | - Domenico Sansonno
- Biomedical Sciences and Human Oncology, University of Bari Medical School, Bari, Italy
| | - Vito Racanelli
- Biomedical Sciences and Human Oncology, University of Bari Medical School, Bari, Italy
| | - Salvatore De Vita
- Medical and Biological Sciences, University Hospital Santa Maria della Misericordia, Udine, Italy
| | - Pietro Pioltelli
- Hematology and Transplant Unit, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy
| | - Emanuela Vaccher
- Medical Oncology, Centro di riferimento oncologico, Aviano, Pordenone, Italy
| | | | - Cesare Mazzaro
- Medical Oncology, Centro di riferimento oncologico, Aviano, Pordenone, Italy
| | - Massimo Libra
- Biomedical Sciences, University of Catania, Catania, Italy
| | - Andrea Gini
- Epidemiology and Biostatistics, CRO National Cancer Institute, Aviano, Pordenone, Italy
| | - Antonella Zucchetto
- Epidemiology and Biostatistics, CRO National Cancer Institute, Aviano, Pordenone, Italy
| | - Renato Cannizzaro
- Gastroenterology, CRO National Cancer Institute, Aviano, Pordenone, Italy
| | - Paolo De Paoli
- Facility Bio-proteomica/Dir. Sc, CRO National Cancer Institute, Aviano, Pordenone, Italy
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162
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Chyuan IT, Tsai HF, Tzeng HT, Sung CC, Wu CS, Chen PJ, Hsu PN. Tumor necrosis factor-alpha blockage therapy impairs hepatitis B viral clearance and enhances T-cell exhaustion in a mouse model. Cell Mol Immunol 2015; 12:317-25. [PMID: 25661729 DOI: 10.1038/cmi.2015.01] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 01/02/2015] [Accepted: 01/03/2015] [Indexed: 12/25/2022] Open
Abstract
Hepatitis B virus (HBV) reactivation and recurrence are common in patients undergoing immunosuppression therapy. Tumor necrosis factor (TNF) blockage therapy is effective for the treatment of many autoimmune inflammatory diseases. However, the role of TNF-α blockage therapy in the innate and adaptive immune responses against HBV is still not clear. A detailed analysis of HBV infection under TNF-α blockage therapy is essential for the prophylaxis and therapy for HBV reactivation and recurrence. In this study, HBV clearance and T-cell responses were analyzed in a HBV-transfected mouse model under anti-TNF blockage therapy. Our results demonstrated that under TNF-α blockage therapy, HBV viral clearance was impaired with persistent elevated HBV viral load in a dose- and temporal-dependent manner. The impairment of HBV clearance under anti-TNF-α blockage therapy occurred at early time points after HBV infection. In addition, TNF-α blockade maintained a higher serum HBV viral load and increased the number of intrahepatic programmed cell death (PD)-1(high)CD127(low) exhausted T cells. Furthermore, TNF-α blockade abolished Toll-like receptor 9 (TLR9) ligand-induced facilitation of HBV viral clearance. Taken together, TNF-α blockade impairs HBV clearance and enhances viral load, and these effects depend on early administration after HBV infection. Our results here demonstrate that early TNF-α blockade reduces viral clearance and persistently maintains elevated HBV viral load in a mouse model, suggesting that HBV may reactivate during therapy with TNF-α-blocking agents.
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Affiliation(s)
- I-Tsu Chyuan
- 1] Department of Internal Medicine, Cathay General Hospital, Taipei, Taiwan, China [2] Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan, China
| | - Hwei-Fang Tsai
- 1] Department of Internal Medicine, Taipei Medical University Shuang Ho Hospital, Taipei, Taiwan, China [2] Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan, China
| | - Horng-Tay Tzeng
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan, China
| | - Chi-Chang Sung
- Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan, China
| | - Chien-Sheng Wu
- Department of Internal Medicine, Far Eastern Memorial Hospital, New Taipei City, Taiwan, China
| | - Pei-Jer Chen
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan, China
| | - Ping-Ning Hsu
- 1] Graduate Institute of Immunology, College of Medicine, National Taiwan University, Taipei, Taiwan, China [2] Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan, China
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163
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Jeng KS, Chang CF, Jeng WJ, Sheen IS, Jeng CJ. Heterogeneity of hepatocellular carcinoma contributes to cancer progression. Crit Rev Oncol Hematol 2015; 94:337-47. [PMID: 25680939 DOI: 10.1016/j.critrevonc.2015.01.009] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 10/24/2014] [Accepted: 01/21/2015] [Indexed: 01/10/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is a highly heterogeneous disease displaying differences in angiogenesis, extracellular matrix proteins, the immune microenvironment and tumor cell populations. Additionally, genetic variations and epigenetic changes of HCC cells could lead to aberrant signaling pathways, induce cancer stem cells and enhance tumor progression. Thus, the heterogeneity in HCC contributes to disease progression and a better understanding of its heterogeneity will greatly aid in the development of strategies for the HCC treatment.
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Affiliation(s)
- Kuo-Shyang Jeng
- Department of Surgery, Far Eastern Memorial Hospital, New Taipei City, Taiwan; Department of Medical Research, Far Eastern Memorial Hospital, New Taipei City, Taiwan.
| | - Chiung-Fang Chang
- Department of Medical Research, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Wen-Juei Jeng
- Department of Hepato-Gastroenterology, Chang-Gung Memorial Hospital, LinKou Medical Center, Chang Gung University, Taiwan
| | - I-Shyan Sheen
- Department of Hepato-Gastroenterology, Chang-Gung Memorial Hospital, LinKou Medical Center, Chang Gung University, Taiwan
| | - Chi-Juei Jeng
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
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164
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Yamagiwa S, Sato Y, Ichida T, Setsu T, Tominaga K, Kamimura H, Tsuchiya A, Takamura M, Matsuda Y, Aoyagi Y. Imbalance between CD56+bright and CD56+dim natural killer cell subsets in the liver of patients with recurrent hepatitis C after liver transplantation. Biomed Res 2015; 35:177-84. [PMID: 24942856 DOI: 10.2220/biomedres.35.177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Progressive liver fibrosis remains a major problem for patients with recurrent chronic hepatitis C(CHC) after liver transplantation (LT). However, the involvement of natural killer (NK) and natural killer T (NKT) cells, which predominate in the liver, in recurrent CHC after LT remains unclear.In the present study, we investigated the status of NK and NKT cells in the liver and peripheral blood obtained from 10 patients with recurrent CHC after LT (LT-C), 15 patients with CHC, and 7 normal donors for living donor LT. CD56+ NK cells were separated into two subsets: CD56+bright subset, which is identified as major NK cytokine producer, and CD56+dim subset, which has greater spontaneous cytotoxicity. We found a significant decrease in the CD56+bright subset in the liver of patients with LT-C compared to patients with CHC (P<0.01) and normal donors (P=0.03). The expression of inhibitory NK cell receptor NKG2A was significantly increased on intrahepatic CD56+bright subset in LT-C patients, and activated CD69+CD56+dim NK cell subset was significantly increased in the liver of LT-C patients. Our results suggest that a significant imbalance between CD56+bright and CD56+dim NK cell subsets in the liver may contribute to the progression of recurrent CHC after LT.
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Affiliation(s)
- Satoshi Yamagiwa
- Division of Gastroenterology and Hepatology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachidori, Chuo-ku, Niigata 951-8510, Japan
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165
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Salim T, May EE. In silico Kinetic Model of iNOS expression in macrophages. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2015; 2014:1159-61. [PMID: 25570169 DOI: 10.1109/embc.2014.6943801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Macrophages are a key component in the host innate response and are major contributors to the proinflammatory response against pathogens. One of the key players in the proinflammatory response is induced nitric oxide synthase (iNOS), an enzyme that provides the nitric oxide needed by phagocytic cells to create reactive nitrogen species, which are highly damaging to intracellular pathogens. To model the macrophage intracellular mechanism of iNOS gene expression, we use a systems biology approach to capture the dynamics of the iNOS gene expression system stimulated by bacterial lipopolysaccharide (LPS) and IFN-γ. Our simulation results agree with in vitro assays of iNOS gene expression and provide a platform for further investigating the potential impact of LPS and IFN-γ variations on macrophage effector function.
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166
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Schon HT, Weiskirchen R. Immunomodulatory effects of transforming growth factor-β in the liver. Hepatobiliary Surg Nutr 2015; 3:386-406. [PMID: 25568862 DOI: 10.3978/j.issn.2304-3881.2014.11.06] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Accepted: 10/20/2014] [Indexed: 12/12/2022]
Abstract
Members of the transforming growth factor-β (TGF-β) family are potent regulatory cytokines that affect multiple cell types of the immune system mediating pro-inflammatory or anti-inflammatory responses. In the liver, TGF-β is produced by a multitude of non-parenchymal liver cells including hepatic stellate cells (HSCs), liver sinusoidal endothelial cells (LSECs), Kupffer cells (KCs), and dendritic cells (DCs) as well as natural killer (NK) T cells among other hepatic lymphocytes. The effect of TGF-β on other cells is highly versatile. In concert with other soluble factors, it controls the maturation, differentiation and activity of various T cell subsets that either prevent or actuate infections, graft-versus-host reactions, immune diseases, and cancer formation. During the last decades, it became evident that some TGFB1 polymorphisms are associated with the pathogenesis of hepatic disease and that plasma TGF-β is a suitable biomarker to detect liver lesions. Moreover, since TGF-β has capacity to influence the quantity and quality of T cell subsets as well as their activity, it is obvious that a well-balanced TGF-β activity is essential for liver homeostasis. In the present review, we highlight some pivotal functions of TGF-β in hepatic immunobiology. We discuss its regulatory function on adaptive immunity, the impact on differentiation of various T cell subsets, its crosstalk with Toll like receptor signaling, and its contribution to functional impairment of the liver.
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Affiliation(s)
- Hans-Theo Schon
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry, RWTH University Hospital Aachen, Aachen, Germany
| | - Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry, RWTH University Hospital Aachen, Aachen, Germany
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167
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Szabo G, Saha B, Bukong TN. Alcohol and HCV: implications for liver cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 815:197-216. [PMID: 25427909 DOI: 10.1007/978-3-319-09614-8_12] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Liver cancers are one of the deadliest known malignancies which are increasingly becoming a major public health problem in both developed and developing countries. Overwhelming evidence suggests a strong role of infection with hepatitis B and C virus (HBV and HCV), alcohol abuse, as well as metabolic diseases such as obesity and diabetes either individually or synergistically to cause or exacerbate the development of liver cancers. Although numerous etiologic mechanisms for liver cancer development have been advanced and well characterized, the lack of definite curative treatments means that gaps in knowledge still exist in identifying key molecular mechanisms and pathways in the pathophysiology of liver cancers. Given the limited success with current therapies and preventive strategies against liver cancer, there is an urgent need to identify new therapeutic options for patients. Targeting HCV and or alcohol-induced signal transduction, or virus-host protein interactions may offer novel therapies for liver cancer. This review summarizes current knowledge on the mechanistic development of liver cancer associated with HCV infection and alcohol abuse as well as highlights potential novel therapeutic strategies.
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Affiliation(s)
- Gyongyi Szabo
- Department of Medicine, University of Massachusetts Medical School, 364 Plantation Street, Worcester, MA, 01605, USA,
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168
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Chelakkot-Govindalayathil AL, Mifuji-Moroka R, D'Alessandro-Gabazza CN, Toda M, Matsuda Y, Gil-Bernabe P, Roeen Z, Yasuma T, Yano Y, Gabazza EC, Iwasa M, Takei Y. Protein S exacerbates alcoholic hepatitis by stimulating liver natural killer T cells. J Thromb Haemost 2015; 13:142-54. [PMID: 25399514 DOI: 10.1111/jth.12789] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 11/05/2014] [Indexed: 12/15/2022]
Abstract
BACKGROUND Alcohol consumption is a major cause of liver injury but the mechanisms are not completely understood. Protein S (PS) is an anticoagulant glycoprotein with multiple functions. The role of PS in liver injury is unknown. OBJECTIVES This study investigated the role of PS in acute alcoholic hepatitis. METHODS A mouse overexpressing human PS (hPS-TG) was generated in which acute hepatitis was induced by intraperitoneal injection of ethanol. RESULTS The levels of serum liver enzymes and liver tissue inflammatory cytokines and the degree of hepatic steatosis were significantly increased in hPS-TG mice treated with ethanol compared with ethanol-treated wild type (WT) mice. Cell expansion, activation and inhibition of apoptosis were significantly augmented in natural killer T (NKT) cells from hPS-TG mice compared with WT mice. Liver mononuclear cells from hPS-TG mice express higher levels of inflammatory cytokines than those from WT mice after stimulation with a specific stimulant of NKT cells in vitro. In a co-culture system of hepatocytes and NKT cells, the effects of PS on ethanol-mediated cell injury were suppressed by a CD1d neutralizing antibody. Alcoholic liver injury was significantly improved in mice pre-treated with PS siRNA and anti-protein S antibody compared with control mice. Patients with alcoholic hepatitis showed significantly increased plasma PS levels and enhanced liver expression of PS and CD1d compared with controls. CONCLUSIONS The results of this study suggest that PS exacerbates acute alcoholic hepatitis by inhibiting apoptosis of activated NKT cells.
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MESH Headings
- Animals
- Antibodies, Neutralizing/pharmacology
- Antigens, CD1d/immunology
- Antigens, CD1d/metabolism
- Apoptosis
- Blood Proteins/genetics
- Blood Proteins/metabolism
- Case-Control Studies
- Cells, Cultured
- Coculture Techniques
- Disease Models, Animal
- Ethanol
- Fatty Liver, Alcoholic/immunology
- Fatty Liver, Alcoholic/metabolism
- Fatty Liver, Alcoholic/pathology
- Hepatitis, Alcoholic/genetics
- Hepatitis, Alcoholic/immunology
- Hepatitis, Alcoholic/metabolism
- Hepatitis, Alcoholic/pathology
- Hepatitis, Alcoholic/prevention & control
- Hepatocytes/immunology
- Hepatocytes/metabolism
- Hepatocytes/pathology
- Humans
- Inflammation Mediators/immunology
- Inflammation Mediators/metabolism
- Liver/immunology
- Liver/metabolism
- Liver/pathology
- Lymphocyte Activation
- Male
- Mice, Inbred C57BL
- Mice, Transgenic
- Natural Killer T-Cells/immunology
- Natural Killer T-Cells/metabolism
- Protein S/genetics
- Protein S/metabolism
- RNAi Therapeutics
- Severity of Illness Index
- Signal Transduction
- Up-Regulation
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169
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Zheng J, Ma LT, Ren QY, Li L, Zhang Y, Shi HJ, Liu Y, Li CH, Dou YQ, Li SD, Zhang H, Yang MH. The influence of astragalus polysaccharide and β-elemene on LX-2 cell growth, apoptosis and activation. BMC Gastroenterol 2014; 14:224. [PMID: 25551689 PMCID: PMC4297370 DOI: 10.1186/s12876-014-0224-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 12/17/2014] [Indexed: 01/24/2023] Open
Abstract
Background Activated hepatic stellate cells are the main source of excessive collagen deposition in liver fibrosis. Here we report the inhibitory effects of the combinational treatment of two natural products, astragalus polysaccharide (APS) and β-elemene (ELE) on the activation of human liver hepatic stellate cell line LX-2 cells. Methods Cultured LX-2 cells were treated with different concentrations of APS or ELE for 24 or 48 hours. Cell viability/apoptosis was measured by MTT assay and Annexin V/PI staining , activation related genes including α-SMA and CD44 expressions were measured by real-time PCR and western blot respectively. Results The majority of LX-2 cells showed morphological change in the presence of APS or ELE for 24 hours. Treatment with APS + ELE for 24 or 48 hours significantly inhabited the cell proliferation compared with APS or ELE treatment alone on LX-2 cells. APS + ELE may block the up-regulation of α-SMA and CD44 both in mRNA and protein levels through TGF-β pathway in LX-2 cells. Conclusion APS or ELE treatment alone on LX-2 cells could inhibit cell proliferation and induce apoptosis. The combinational treatment using APS + ELE significantly increased the killing efficiency on LX-2 cells. α-SMA and CD44 expressions was inhibited upon APS + ELE treatment through TGF-β pathway in LX-2 cells. The results indicated a novel treatment using natural products for liver diseases with anti-fibrotic effect.
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170
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Mitra A, Satelli A, Yan J, Xueqing X, Gagea M, Hunter CA, Mishra L, Li S. IL-30 (IL27p28) attenuates liver fibrosis through inducing NKG2D-rae1 interaction between NKT and activated hepatic stellate cells in mice. Hepatology 2014; 60:2027-39. [PMID: 25351459 PMCID: PMC4245364 DOI: 10.1002/hep.27392] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 08/21/2014] [Indexed: 12/21/2022]
Abstract
UNLABELLED Chronic hepatic diseases, such as cirrhosis, hepatocellular carcinoma, and virus-mediated immunopathogenic infections, affect billions of people worldwide. These diseases commonly initiate with fibrosis. Owing to the various side effects of antifibrotic therapy and the difficulty of diagnosing asymptomatic patients, suitable medication remains a major concern. To overcome this drawback, the use of cytokine-based sustained therapy might be a suitable alternative with minimal side effects. Here, we studied the therapeutic efficacy and potential mechanisms of interleukin (IL)-30 as antifibrosis therapy in murine liver fibrosis models. CCl4 or 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC) 0.1% (wt/wt) Purina 5015 Chow (LabDiet, St. Louis, MO) was fed for 3 weeks to induce liver fibrosis. Either control vector (pCtr) or pIL30 was injected hydrodynamically once per week. A significant decrease in collagen deposition and reduced expression of alpha-smooth muscle actin (α-SMA) protein indicated that IL-30-based gene therapy dramatically reduced bridging fibrosis that was induced by CCl4 or DDC. Immunophenotyping and knockout studies showed that IL-30 recruits natural-killer-like T (NKT) cells to the liver to remove activated hepatic stellate cells (HSCs) significantly and ameliorate liver fibrosis. Both flow cytometric and antibody-mediated neutralization studies showed that liver NKT cells up-regulate the natural killer group 2, member D (NKG2D) ligand and bind with the NKG2D ligand, retinoic acid early inducible 1 (Rae1), and positively activated HSCs to ameliorate liver fibrosis. Furthermore, adoptive transfer of liver NKT cells in T-cell-deficient mice showed reduction of fibrosis upon IL-30 administration. CONCLUSIONS Highly target-specific liver NKT cells selectively remove activated HSCs through an NKG2D-Rae1 interaction to ameliorate liver fibrosis after IL-30 treatment.
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Affiliation(s)
- Abhisek Mitra
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Arun Satelli
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jun Yan
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xia Xueqing
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Mihai Gagea
- Department of Veterinary Medicine and Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | | | - Lopa Mishra
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Shulin Li
- Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA,Corresponding author. Department of Pediatrics, Unit 0853, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030 USA, , Phone: 713-563-9608, FAX: 713-563-9607
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171
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Detection and significance of cytotoxic cell subsets in biopsies of HCV-infected human livers. Arch Immunol Ther Exp (Warsz) 2014; 62:153-60. [PMID: 24232187 PMCID: PMC3950568 DOI: 10.1007/s00005-013-0258-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 10/25/2013] [Indexed: 01/27/2023]
Abstract
Chronic viral hepatitis C still remains the clinical challenge. Attempts of the immune system to cope with this infection are unsatisfactory. There
is a conviction that the main site of interaction between virus (Hepatitis C virus, HCV) and immune system is in situ, i.e., in liver. Natural killer (NK) cells appeared relevant in the acute hepatitis. Less is known about the immune response in the chronic HCV infection. The aim of this study was to evaluate the prevalence of various cytotoxic cell subsets in chronic HCV+ liver tissue and to seek links between them and laboratory data of patients. Sections from paraffin blocks of liver biopsy tissues of HCV+ untreated patients were subjected to the reaction with antibodies vs. cytotoxic cell subsets and immunohistochemistry. Positive cells were searched in cellular infiltrates in portal areas and in liver parenchyma. They were classified on the “Yes” or “No” basis. Majority of liver biopsies exhibited cellular infiltrates in portal spaces and as single cells in liver parenchyma. Infiltrates consisted of CD8+ T cells, CD56+ NK ones, including CD158i+ and CD158b+. The latter were rarely seen. There were also granzyme B+ cells. The most abundant were NKG2D+ cells, much more common than NK CD56+ ones. It implied that NKG2D was also expressed on T cells. Prevalence of NKG2D+ cells correlated with high activity of liver enzymes such as alanine aminotransferase, aspartate aminotransferase and a greater histological severity of liver injury. NKG2D+ cells form the bulk of cells infiltrating HCV-infected human liver. Correlation of NKG2D+ cells with some laboratory parameters of patients suggests their role in hepatitis C pathogenesis.
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172
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Abstract
Hepatic stellate cells are resident perisinusoidal cells distributed throughout the liver, with a remarkable range of functions in normal and injured liver. Derived embryologically from septum transversum mesenchyme, their precursors include submesothelial cells that invade the liver parenchyma from the hepatic capsule. In normal adult liver, their most characteristic feature is the presence of cytoplasmic perinuclear droplets that are laden with retinyl (vitamin A) esters. Normal stellate cells display several patterns of intermediate filaments expression (e.g., desmin, vimentin, and/or glial fibrillary acidic protein) suggesting that there are subpopulations within this parental cell type. In the normal liver, stellate cells participate in retinoid storage, vasoregulation through endothelial cell interactions, extracellular matrix homeostasis, drug detoxification, immunotolerance, and possibly the preservation of hepatocyte mass through secretion of mitogens including hepatocyte growth factor. During liver injury, stellate cells activate into alpha smooth muscle actin-expressing contractile myofibroblasts, which contribute to vascular distortion and increased vascular resistance, thereby promoting portal hypertension. Other features of stellate cell activation include mitogen-mediated proliferation, increased fibrogenesis driven by connective tissue growth factor, and transforming growth factor beta 1, amplified inflammation and immunoregulation, and altered matrix degradation. Evolving areas of interest in stellate cell biology seek to understand mechanisms of their clearance during fibrosis resolution by either apoptosis, senescence, or reversion, and their contribution to hepatic stem cell amplification, regeneration, and hepatocellular cancer.
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Affiliation(s)
- Juan E Puche
- Division of Liver Diseases, Icahn School of Medicine at Mount Sinai Hospital, New York, New York, New York
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173
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Liu D, Yovchev MI, Zhang J, Alfieri AA, Tchaikovskaya T, Laconi E, Dabeva MD. Identification and characterization of mesenchymal-epithelial progenitor-like cells in normal and injured rat liver. THE AMERICAN JOURNAL OF PATHOLOGY 2014; 185:110-28. [PMID: 25447047 DOI: 10.1016/j.ajpath.2014.08.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 08/22/2014] [Accepted: 08/27/2014] [Indexed: 01/07/2023]
Abstract
In normal rat liver, thymocyte antigen 1 (Thy1) is expressed in fibroblasts/myofibroblasts and in some blood progenitor cells. Thy1-expressing cells also accumulate in the liver during impaired liver regeneration. The origin and nature of these cells are not well understood. By using RT-PCR analysis and immunofluorescence microscopy, we describe the presence of rare Thy1(+) cells in the liver lobule of normal animals, occasionally forming small collections of up to 20 cells. These cells constitute a small portion (1.7% to 1.8%) of nonparenchymal cells and reveal a mixed mesenchymal-epithelial phenotype, expressing E-cadherin, cytokeratin 18, and desmin. The most potent mitogens for mesenchymal-epithelial Thy1(+) cells in vitro are the inflammatory cytokines interferon γ, IL-1, and platelet-derived growth factor-BB, which are not produced by Thy1(+) cells. Thy1(+) cells express all typical mesenchymal stem cell and hepatic progenitor cell markers and produce growth factor and cytokine mRNA (Hgf, Il6, Tgfa, and Tweak) for proteins that maintain oval cell growth and differentiation. Under appropriate conditions, mesenchymal-epithelial cells differentiate in vitro into hepatocyte-like cells. In this study, we show that the adult rat liver harbors a small pool of endogenous mesenchymal-epithelial cells not recognized previously. In the quiescent state, these cells express both mesenchymal and epithelial cell markers. They behave like hepatic stem cells/progenitors with dual phenotype, exhibiting high plasticity and long-lasting proliferative activity.
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Affiliation(s)
- Daqing Liu
- Department of Medicine, Marion Bessin Liver Research Center, Albert Einstein College of Medicine, Bronx, New York
| | - Mladen I Yovchev
- Department of Medicine, Marion Bessin Liver Research Center, Albert Einstein College of Medicine, Bronx, New York
| | - Jinghang Zhang
- Flow Cytometry Core Facility, Albert Einstein College of Medicine, Bronx, New York
| | - Alan A Alfieri
- Department of Radiation Oncology, Albert Einstein College of Medicine, Bronx, New York
| | - Tatyana Tchaikovskaya
- Department of Medicine, Marion Bessin Liver Research Center, Albert Einstein College of Medicine, Bronx, New York
| | - Ezio Laconi
- Section of Experimental Pathology, Department of Sciences and Biomedical Technology, University of Cagliari, Cagliari, Italy
| | - Mariana D Dabeva
- Department of Medicine, Marion Bessin Liver Research Center, Albert Einstein College of Medicine, Bronx, New York.
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174
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Zhang M, Wang F, Chong Y, Tai Q, Zhao Q, Zheng Y, Peng L, Lin S, Gao Z. Liver myofibroblasts from hepatitis B related liver failure patients may regulate natural killer cell function via PGE2. J Transl Med 2014; 12:308. [PMID: 25367326 PMCID: PMC4232720 DOI: 10.1186/s12967-014-0308-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 10/22/2014] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Natural killer (NK) cells are abundant in the liver and constitute a major innate immune component that contributes to immune-mediated liver injury. However, few studies have investigated the phenotypes and functions of NK cells involved in hepatitis B related liver failure (LF), and the precise mechanism underlying NK cell regulation is not fully understood. METHODS We detected the percentage and function of peripheral NK cells both in hepatitis B related LF patients and healthy volunteers by flow cytometry and isolated the liver myofibroblasts (LMFs) from hepatitis B related LF livers. To determine the possible effects of LMFs on NK cells, mixed cell cultures were established in vitro. RESULTS We found a down-regulated percentage of peripheral NK cells in hepatitis B related LF patients, and their NK cells also displayed decreased activated natural cytotoxicity receptors (NCRs) and cytokine production. In a co-culture model, LMFs sharply attenuated IL-2-induced NK cell triggering receptors, cytotoxicity, and cytokine production. The inhibitory effect of LMFs on NK cells correlated with their ability to produce prostaglandin (PG) E2. CONCLUSION These data suggest that LMFs may protect against immune-mediated liver injury in hepatitis B related LF patients by inhibiting NK cell function via PGE2.
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Affiliation(s)
- Min Zhang
- Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou, 510630, Guangdong Province, China.
| | - Fenglan Wang
- Department of Infectious Diseases, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, No. 277 Yanta West Road, Xi'an, 710061, Shanxi Province, China. .,Department of Infectious Diseases, the Eighth Hospital of Xi'an, Xi'an, China.
| | - Yutian Chong
- Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou, 510630, Guangdong Province, China.
| | - Qiang Tai
- Department of Hepatic Surgury, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
| | - Qiyi Zhao
- Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou, 510630, Guangdong Province, China.
| | - Yubao Zheng
- Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou, 510630, Guangdong Province, China.
| | - Liang Peng
- Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou, 510630, Guangdong Province, China.
| | - Shumei Lin
- Department of Infectious Diseases, First Affiliated Hospital of Medical College of Xi'an Jiaotong University, No. 277 Yanta West Road, Xi'an, 710061, Shanxi Province, China.
| | - Zhiliang Gao
- Department of Infectious Diseases, Third Affiliated Hospital of Sun Yat-sen University, No. 600 Tianhe Road, Guangzhou, 510630, Guangdong Province, China.
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175
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Le Couteur DG, Tay SS, Solon-Biet S, Bertolino P, McMahon AC, Cogger VC, Colakoglu F, Warren A, Holmes AJ, Pichaud N, Horan M, Correa C, Melvin RG, Turner N, Ballard JWO, Ruohonen K, Raubenheimer D, Simpson SJ. The Influence of Macronutrients on Splanchnic and Hepatic Lymphocytes in Aging Mice. J Gerontol A Biol Sci Med Sci 2014; 70:1499-507. [DOI: 10.1093/gerona/glu196] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 09/16/2014] [Indexed: 11/13/2022] Open
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176
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Yin S, Wang H, Bertola A, Feng D, Xu MJ, Wang Y, Gao B. Activation of invariant natural killer T cells impedes liver regeneration by way of both IFN-γ- and IL-4-dependent mechanisms. Hepatology 2014; 60:1356-66. [PMID: 24623351 PMCID: PMC4190674 DOI: 10.1002/hep.27128] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 03/10/2014] [Indexed: 12/18/2022]
Abstract
UNLABELLED Invariant natural killer T (iNKT) cells are a major subset of lymphocytes found in the liver. These cells mediate various functions, including hepatic injury, fibrogenesis, and carcinogenesis. However, the function of iNKT cells in liver regeneration remains unclear. In the present study, partial hepatectomy (PHx) was used to study liver regeneration. α-Galactosylceramide (α-GalCer), a specific ligand for iNKT cells, was used to induce iNKT cell activation. After PHx, two strains of iNKT cell-deficient mice, CD1d(-/-) and Jα281(-/-) mice, showed normal liver regeneration. Injection of α-GalCer before or after PHx, which rapidly stimulated interferon-gamma (IFN-γ) and interleukin (IL)-4 production by iNKT cells, markedly inhibited liver regeneration. In vitro treatment with IFN-γ inhibited hepatocyte proliferation. In agreement with this in vitro finding, genetic disruption of IFN-γ or its downstream signaling molecule signal transducer and activator of transcription (STAT)1 significantly abolished the α-GalCer-mediated inhibition of liver regeneration. In vitro exposure to IL-4 did not affect hepatocyte proliferation, but surprisingly, genetic ablation of IL-4 or its downstream signaling molecule STAT6 partially eliminated the inhibitory effect of α-GalCer on liver regeneration. Further studies revealed that IL-4 contributed to α-GalCer-induced iNKT cell expansion and IFN-γ production, thereby inhibiting liver regeneration. CONCLUSION iNKT cells play a minor role in controlling liver regeneration after PHx under healthy conditions. Activation of iNKT cells by α-GalCer induces the production of IFN-γ, which directly inhibits liver regeneration, and IL-4, which indirectly attenuates liver regeneration by stimulating iNKT cell expansion and IFN-γ production.
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Affiliation(s)
- Shi Yin
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892, USA
- Department of Geriatrics, Affiliated Provincial Hospitalof Anhui Medical University
| | - Hua Wang
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892, USA
- Institute for Liver Diseases, Anhui Medical University, Hefei, 230032, China
| | - Adeline Bertola
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892, USA
| | - Dechun Feng
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ming-jiang Xu
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892, USA
| | - Yan Wang
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892, USA
| | - Bin Gao
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892, USA
- Corresponding author: Bin Gao, M.D., Ph.D., Laboratory of Liver Diseases, NIAAA/NIH, 5625 Fishers Lane, Bethesda, MD 20892., Tel: 301-443-3998;
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177
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Tarumoto N, Kinjo Y, Kitano N, Shibuya K, Maesaki S, Miyazaki Y. [iNKT cells participate in the exacerbation of systemic candidal infection]. Med Mycol J 2014; 55:J115-22. [PMID: 25231226 DOI: 10.3314/mmj.55.j115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Candida species are one major causal microorganism of hospital acquired bloodstream infections associated with high mortality. Phagocytes like neutrophils in innate immunity and CD4 T cells in acquired immunity have a major role in host defense immune response. It has been recently found that a type of innate-like lymphocyte called NKT cells respond against various organisms but its role in candidal infection remained unknown. Thus, we analyzed the role of NKT cells in the immune response against systemic candidiasis using mice deficient of NKT cells. In vivo studies revealed that invariant NKT cells play a limited role for controlling systemic candidal infection. On the other hand, studies looking at the role of glycolipid-activated NKT cells during candidal infection revealed that candida-infected mice injected with glycolipid had shorter survival period and greater number of fungal colonies in the kidney accompanied with reduced number of neutrophils in the blood and bone marrow. Surprisingly, glycolipid-mediated exacerbation of candidal infection was absent in IFNγ deficient mice. Co-infection of candida with intestinal commensals caused exacerbated infection in which IFNγ played a critical role in impairing fungal elimination. These results suggest that the excessive IFNγ released from candida and bacterial co-infection is a critical factor in worsening candidal infection.
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Affiliation(s)
- Norihito Tarumoto
- Department of Infectious Disease and Infection Control, Saitama Medical University
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178
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Xu J, Liu X, Gao B, Karin M, Tsukamoto H, Brenner D, Kisseleva T. New Approaches for Studying Alcoholic Liver Disease. CURRENT PATHOBIOLOGY REPORTS 2014; 2:171-183. [PMID: 26594598 DOI: 10.1007/s40139-014-0053-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Alcoholic liver disease (ALD) is major cause of chronic liver injury which results in liver fibrosis and cirrhosis. According to the surveillance report published by the National Institute on Alcohol Abuse and Alcoholism, liver cirrhosis is the 12th leading cause of death in the United States with 48 % of these deaths being attributed to excessive alcohol consumption. ALD includes a spectrum of disorders from simple steatosis to steatohepatitis, fibrosis, and hepatocellular carcinoma. Several mechanisms play a critical role in the pathogenesis of ALD. These include ethanol-induced oxidative stress and depletion of glutathione, pathological methionine metabolism, increased gut permeability and release of endotoxins into the portal blood, recruitment and activation of inflammatory cells including bone marrow-derived and liver resident macrophages (Kupffer cells). Chronic alcohol consumption results in liver damage and activation of hepatic stellate cells (HSCs) and myofibroblasts, leading to liver fibrosis. Here we discuss the current view on factors that are specific for different stages of ALD and those that regulate its progression, including cytokines and chemokines, alcohol-responsive intracellular signaling pathways, and transcriptional factors. We also review recent studies demonstrating that alcohol-mediated changes can be regulated on an epigenetic level, including microRNAs. Finally, we discuss the reversibility of liver fibrosis and inactivation of HSCs as a potential strategy for treating alcohol-induced liver damage.
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Affiliation(s)
- Jun Xu
- Department of Medicine, UC San Diego, San Diego, CA, USA
| | - Xiao Liu
- Department of Medicine, UC San Diego, San Diego, CA, USA
| | - Bin Gao
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Michael Karin
- Department of Pharmacology, UC San Diego, San Diego, CA, USA
| | - Hidekazu Tsukamoto
- Southern California Research Center for ALPD & Cirrhosis Department of Pathology Keck School of Medicine of USC, University of Southern California, Los Angeles, CA, USA
| | - David Brenner
- Department of Medicine, UC San Diego, San Diego, CA, USA
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179
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Huang X, Qu P, Chen Y, Zhou X, Wu Y, Liu F, Wang D, Zhang J, An J. Low expression of CD112 is associated with poor overall survival in patients with hepatocellular carcinoma. Hum Pathol 2014; 45:1944-50. [DOI: 10.1016/j.humpath.2014.06.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 06/02/2014] [Accepted: 06/04/2014] [Indexed: 10/25/2022]
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180
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Mandrekar P, Ambade A. Immunity and inflammatory signaling in alcoholic liver disease. Hepatol Int 2014; 8 Suppl 2:439-46. [PMID: 26201323 PMCID: PMC4587491 DOI: 10.1007/s12072-014-9518-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 01/06/2014] [Indexed: 12/20/2022]
Abstract
The pathogenesis of alcoholic liver disease (ALD) is multifactorial and characterized by steatosis, steatohepatitis and cirrhosis. Several signaling pathways in different liver cell types that contribute to the development and progression of alcoholic liver injury have been identified. Among these, immune cells and signaling pathways are the most prominent and central to ALD. Both innate and adaptive immune responses contribute to ALD. The key features of inflammatory pathways in ALD including liver innate and adaptive immune cell types, signaling receptors/pathways, and pro- and antiinflammatory/protective responses are summarized here.
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Affiliation(s)
- Pranoti Mandrekar
- Department of Medicine, University of Massachusetts Medical School, LRB 221, 364 Plantation Street, Worcester, MA, 01605, USA.
| | - Aditya Ambade
- Department of Medicine, University of Massachusetts Medical School, LRB 270i, 364 Plantation Street, Worcester, MA, 01605, USA
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181
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Cai C, Huang H, Whelan S, Liu L, Kautza B, Luciano J, Wang G, Chen G, Stratimirovic S, Tsung A, Billiar TR, Zuckerbraun BS. Benzyl alcohol attenuates acetaminophen-induced acute liver injury in a Toll-like receptor-4-dependent pattern in mice. Hepatology 2014; 60:990-1002. [PMID: 24798499 DOI: 10.1002/hep.27201] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 05/01/2014] [Indexed: 01/09/2023]
Abstract
UNLABELLED Acetaminophen (APAP) toxicity is the most common cause of acute liver failure in industrialized countries. Understanding the mechanisms of APAP-induced liver injury as well as other forms of sterile liver injury is critical to improve the care of patients. Recent studies demonstrate that danger signaling and inflammasome activation play a role in APAP-induced injury. The aim of these investigations was to test the hypothesis that benzyl alcohol (BA) is a therapeutic agent that protects against APAP-induced liver injury by modulation of danger signaling. APAP-induced liver injury was dependent, in part, on Toll-like receptor (TLR)9 and receptor for advanced glycation endproducts (RAGE) signaling. BA limited liver injury over a dose range of 135-540 μg/g body weight or when delivered as a pre-, concurrent, or post-APAP therapeutic. Furthermore, BA abrogated APAP-induced cytokines and chemokines as well as high-mobility group box 1 release. Moreover, BA prevented APAP-induced inflammasome signaling as determined by interleukin (IL)-1β, IL-18, and caspase-1 cleavage in liver tissues. Interestingly, the protective effects of BA on limiting liver injury and inflammasome activation were dependent on TLR4 signaling, but not TLR2 or CD14. Cell-type-specific knockouts of TLR4 were utilized to further determine the protective mechanisms of BA. These studies found that TLR4 expression specifically in myeloid cells (LyzCre-tlr4-/-) were necessary for the protective effects of BA. CONCLUSION BA protects against APAP-induced acute liver injury and reduced inflammasome activation in a TLR4-dependent manner. BA may prove to be a useful adjunct in the treatment of APAP and other forms of sterile liver injury.
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Affiliation(s)
- Changchun Cai
- Central Hospital of Wuhan, Wuhan, China; Department of Surgery, University of Pittsburgh, Pittsburgh, PA
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182
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Cosgrove C, Berger CT, Kroy DC, Cheney PC, Ghebremichael M, Aneja J, Tomlinson M, Kim AY, Lauer GM, Alter G. Chronic HCV infection affects the NK cell phenotype in the blood more than in the liver. PLoS One 2014; 9:e105950. [PMID: 25148254 PMCID: PMC4141847 DOI: 10.1371/journal.pone.0105950] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 07/29/2014] [Indexed: 12/31/2022] Open
Abstract
Although epidemiological and functional studies have implicated NK cells in protection and early clearance of HCV, the mechanism by which they may contribute to viral control is poorly understood, particularly at the site of infection, the liver. We hypothesized that a unique immunophenotypic/functional NK cell signature exists in the liver that may provide insights into the contribution of NK cells to viral control. Intrahepatic and blood NK cells were profiled from chronically infected HCV-positive and HCV-negative individuals. Baseline expression of activating and inhibitory receptors was assessed, as well as functional responses following stimulation through classic NK cell pathways. Independent of HCV infection, the liver was enriched for the immunoregulatory CD56bright NK cell population, which produced less IFNγ and CD107a but comparable levels of MIP1β, and was immunophenotypically distinct from their blood counterparts. This profile was mostly unaltered in chronic HCV infection, though different expression levels of NKp46 and NKG2D were associated with different grades of fibrosis. In contrast to the liver, chronic HCV infection associated with an enrichment of CD161lowperforinhigh NK cells in the blood correlated with increased AST and 2B4 expression. However, the association of relatively discrete changes in the NK cell phenotype in the liver with the fibrosis stage nevertheless suggests an important role for the NK response. Overall these data suggest that tissue localization has a more pervasive effect on NK cells than the presence of chronic viral infection, during which these cells might be mostly attuned to limiting immunopathology. It will be important to characterize NK cells during early HCV infection, when they should have a critical role in limiting infection.
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Affiliation(s)
- Cormac Cosgrove
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, United States of America
| | - Christoph T. Berger
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, United States of America
| | - Daniela C. Kroy
- Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Medical Department 3, RWTH Aachen University Hospital, Aachen, Germany
| | - Patrick C. Cheney
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, United States of America
| | - Musie Ghebremichael
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, United States of America
| | - Jasneet Aneja
- Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Michelle Tomlinson
- Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Arthur Y. Kim
- Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
| | - Georg M. Lauer
- Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
| | - Galit Alter
- Ragon Institute of MGH, MIT and Harvard, Cambridge, Massachusetts, United States of America
- * E-mail:
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183
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Natural killer cell function and dysfunction in hepatitis C virus infection. BIOMED RESEARCH INTERNATIONAL 2014; 2014:903764. [PMID: 25057504 PMCID: PMC4095668 DOI: 10.1155/2014/903764] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Accepted: 04/14/2014] [Indexed: 01/06/2023]
Abstract
Viruses must continually adapt against dynamic innate and adaptive responses of the host immune system to establish chronic infection. Only a small minority (~20%) of those exposed to hepatitis C virus (HCV) spontaneously clear infection, leaving approximately 200 million people worldwide chronically infected with HCV. A number of recent research studies suggest that establishment and maintenance of chronic HCV infection involve natural killer (NK) cell dysfunction. This relationship is illustrated in vitro by disruption of typical NK cell responses including both cell-mediated cytotoxicity and cytokine production. Expression of a number of activating NK cell receptors in vivo is also affected in chronic HCV infection. Thus, direct in vivo and in vitro evidence of compromised NK function in chronic HCV infection in conjunction with significant epidemiological associations between the outcome of HCV infection and certain combinations of NK cell regulatory receptor and class I human histocompatibility linked antigen (HLA) genotypes indicate that NK cells are important in the immune response against HCV infection. In this review, we highlight evidence suggesting that selective impairment of NK cell activity is related to establishment of chronic HCV infection.
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184
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Elpek G&O. Cellular and molecular mechanisms in the pathogenesis of liver fibrosis: An update. World J Gastroenterol 2014; 20:7260-7276. [PMID: 24966597 PMCID: PMC4064072 DOI: 10.3748/wjg.v20.i23.7260] [Citation(s) in RCA: 242] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Revised: 02/08/2014] [Accepted: 05/26/2014] [Indexed: 02/06/2023] Open
Abstract
There have been considerable recent advances towards a better understanding of the complex cellular and molecular network underlying liver fibrogenesis. Recent data indicate that the termination of fibrogenic processes and the restoration of deficient fibrolytic pathways may allow the reversal of advanced fibrosis and even cirrhosis. Therefore, efforts have been made to better clarify the cellular and molecular mechanisms that are involved in liver fibrosis. Activation of hepatic stellate cells (HSCs) remains a central event in fibrosis, complemented by other sources of matrix-producing cells, including portal fibroblasts, fibrocytes and bone marrow-derived myofibroblasts. These cells converge in a complex interaction with neighboring cells to provoke scarring in response to persistent injury. Defining the interaction of different cell types, revealing the effects of cytokines on these cells and characterizing the regulatory mechanisms that control gene expression in activated HSCs will enable the discovery of new therapeutic targets. Moreover, the characterization of different pathways associated with different etiologies aid in the development of disease-specific therapies. This article outlines recent advances regarding the cellular and molecular mechanisms involved in liver fibrosis that may be translated into future therapies. The pathogenesis of liver fibrosis associated with alcoholic liver disease, non-alcoholic fatty liver disease and viral hepatitis are also discussed to emphasize the various mechanisms involved in liver fibrosis.
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185
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Monnier J, Zabel BA. Anti-asialo GM1 NK cell depleting antibody does not alter the development of bleomycin induced pulmonary fibrosis. PLoS One 2014; 9:e99350. [PMID: 24922516 PMCID: PMC4055641 DOI: 10.1371/journal.pone.0099350] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 05/13/2014] [Indexed: 12/30/2022] Open
Abstract
Despite circumstantial evidence postulating a protective role for NK cells in many fibrotic conditions, their contribution to the development of pulmonary fibrosis has yet to be tested. Lung-migrating NK cells are thought to attenuate the development of bleomycin induced pulmonary fibrosis (BIPF) by providing anti-fibrotic mediators and cytokines, such as IFN-γ. If true, we reasoned that depletion of NK cells during experimentally-induced fibrotic disease would lead to exacerbated fibrosis. To test this, we treated mice with NK cell-depleting antisera (anti-asialo GM1) and evaluated lung inflammation and fibrosis in the BIPF model. While NK cell infiltration into the airways was maximal at day 10 after bleomycin injection, NK cells represented a minor portion (1-3%) of the total leukocytes in BAL fluid. Anti-asialo GM1 significantly abrogated NK cell numbers over the course of the disease. Depletion of NK cells with anti-asialo GM1 before and throughout the BIPF model, or during just the fibrotic phase did not alter fibrosis development or affect the levels of any of the pro-inflammatory/pro-fibrotic cytokines measured (IL-1β, IL-17, IFN-γ, TGF-β and TNF-α). In addition, adoptively transferred NK cells, which were detectable systemically and in the airways throughout BIPF, failed to impact lung fibrosis. These findings indicate that NK cells likely do not play an essential protective role in controlling pulmonary fibrosis development.
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Affiliation(s)
- Justin Monnier
- Department of Pathology, Stanford University School of Medicine, Stanford, California, United States of America
- Palo Alto Institute for Research and Education, Department of Veterans Affairs Palo Alto Health Care System, Palo Alto, California, United States of America
| | - Brian A. Zabel
- Palo Alto Institute for Research and Education, Department of Veterans Affairs Palo Alto Health Care System, Palo Alto, California, United States of America
- * E-mail:
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186
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Altomonte J, Ebert O. Sorting Out Pandora's Box: Discerning the Dynamic Roles of Liver Microenvironment in Oncolytic Virus Therapy for Hepatocellular Carcinoma. Front Oncol 2014; 4:85. [PMID: 24795862 PMCID: PMC4001031 DOI: 10.3389/fonc.2014.00085] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 04/07/2014] [Indexed: 12/12/2022] Open
Abstract
Oncolytic viral therapies have recently found their way into clinical application for hepatocellular carcinoma (HCC), a disease with limited treatment options and poor prognosis. Adding to the many intrinsic challenges of in vivo oncolytic viral therapy, is the complex microenvironment of the liver, which imposes unique limitations to the successful delivery and propagation of the virus. The normal liver milieu is characterized by an intricate network of hepatocytes and non-parenchymal cells including Kupffer cells, stellate cells, and sinusoidal endothelial cells, which can secrete anti-viral cytokines, provide a platform for non-specific uptake, and form a barrier to efficient viral spread. In addition, natural killer cells are greatly enriched in the liver, contributing to the innate defense against viruses. The situation is further complicated when HCC arises in the setting of underlying hepatitis virus infection and/or hepatic cirrhosis, which occurs in more than 90% of clinical cases. These conditions pose further inhibitory effects on oncolytic virus (OV) therapy due to the presence of chronic inflammation, constitutive cytokine expression, altered hepatic blood flow, and extracellular matrix deposition. In addition, OVs can modulate the hepatic microenvironment, resulting in a complex interplay between virus and host. The immune system undoubtedly plays a substantial role in the outcome of OV therapy, both as an inhibitor of viral replication, and as a potent mechanism of virus-mediated tumor cell killing. This review will discuss the particular challenges of oncolytic viral therapy for HCC, as well as some potential strategies for modulating the immune system and synergizing with the hepatic microenvironment to improve therapeutic outcome.
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Affiliation(s)
- Jennifer Altomonte
- II. Medizinische Klinik und Poliklinik, Klinikum Rechts der Isar, Technische Universität München , München , Germany
| | - Oliver Ebert
- II. Medizinische Klinik und Poliklinik, Klinikum Rechts der Isar, Technische Universität München , München , Germany
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187
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Diao H, He J, Zheng Q, Chen J, Cui G, Wei Y, Ye P, Kohanawa M, Li L. A possible role for NKT-like cells in patients with chronic hepatitis B during telbivudine treatment. Immunol Lett 2014; 160:65-71. [PMID: 24718278 DOI: 10.1016/j.imlet.2014.03.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 03/21/2014] [Accepted: 03/28/2014] [Indexed: 12/23/2022]
Abstract
Natural killer T-like (NKT-like) cells are a source of different pro-inflammatory cytokines and therefore may be involved in inflammatory processes. However, little is known about NKT-like cells during antiviral therapy. In this study, we observed significantly higher numbers of CD3(+)CD56(+) cells in patients with chronic hepatitis B (CHB) than healthy controls. Importantly, CD3(+)CD56(+) NKT-like cells markedly decreased during telbivudine treatment in patients with CHB, and a positive correlation between NKT-like cell frequency and the serum HBV DNA level was observed during early antiviral therapy. Interestingly, NKT-like cell frequency significantly reduced in well-responders at week 12 of telbivudine therapy compared to baseline, but did not significantly change in non-responders after treatment. Previous studies have shown that interleukin (IL)-17 plays a role in the pathogenesis of CHB. Serum IL-17 levels reduced significantly during early antiviral therapy, however, interferon (IFN)-γ, IL-6 and tumor necrosis factor (TNF)-α levels did not change significantly. A positive correlation was observed between the NKT-like cell frequency and serum IL-17 level in CHB patients, and NKT-like cells isolated from patients with CHB secreted substantial amounts of IL-17 in vitro. These results suggest that the NKT-like cell frequency may be one of useful immunologic marker for evaluating the efficacy of anti-HBV therapy, and that NKT-like cells are also an important source of IL-17 (in addition to conventional T cells) in patients with CHB.
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Affiliation(s)
- Hongyan Diao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China.
| | - Jianqin He
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Qishi Zheng
- The College of Education, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Jianing Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Guangying Cui
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Yingfeng Wei
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China
| | - Ping Ye
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China
| | - Masashi Kohanawa
- Department of Microbiology, School of Medicine, Hokkaido University, Sapporo 0600815, Japan
| | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, China.
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188
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Miller J, Sack B, Baldwin M, Vaughan A, Kappe S. Interferon-Mediated Innate Immune Responses against Malaria Parasite Liver Stages. Cell Rep 2014; 7:436-447. [DOI: 10.1016/j.celrep.2014.03.018] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 02/07/2014] [Accepted: 03/11/2014] [Indexed: 01/25/2023] Open
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189
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Ebrahimkhani MR, Neiman JAS, Raredon MSB, Hughes DJ, Griffith LG. Bioreactor technologies to support liver function in vitro. Adv Drug Deliv Rev 2014; 69-70:132-57. [PMID: 24607703 PMCID: PMC4144187 DOI: 10.1016/j.addr.2014.02.011] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 02/18/2014] [Accepted: 02/24/2014] [Indexed: 02/08/2023]
Abstract
Liver is a central nexus integrating metabolic and immunologic homeostasis in the human body, and the direct or indirect target of most molecular therapeutics. A wide spectrum of therapeutic and technological needs drives efforts to capture liver physiology and pathophysiology in vitro, ranging from prediction of metabolism and toxicity of small molecule drugs, to understanding off-target effects of proteins, nucleic acid therapies, and targeted therapeutics, to serving as disease models for drug development. Here we provide perspective on the evolving landscape of bioreactor-based models to meet old and new challenges in drug discovery and development, emphasizing design challenges in maintaining long-term liver-specific function and how emerging technologies in biomaterials and microdevices are providing new experimental models.
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Affiliation(s)
- Mohammad R Ebrahimkhani
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jaclyn A Shepard Neiman
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Micha Sam B Raredon
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | | | - Linda G Griffith
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Center for Gynepathology Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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190
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Raftery MJ, Wolter E, Fillatreau S, Meisel H, Kaufmann SHE, Schönrich G. NKT Cells Determine Titer and Subtype Profile of Virus-Specific IgG Antibodies during Herpes Simplex Virus Infection. THE JOURNAL OF IMMUNOLOGY 2014; 192:4294-302. [DOI: 10.4049/jimmunol.1300148] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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191
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Wang Y, Dong J, Meng W, Ma J, Wang N, Wei J, Shi M. Effects of phased joint intervention on IL-35 and IL-17 expression levels in patients with portal hypertension. Int J Mol Med 2014; 33:1131-9. [PMID: 24549402 DOI: 10.3892/ijmm.2014.1662] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 02/05/2014] [Indexed: 11/05/2022] Open
Abstract
The aim of the present study was to investigate the clinical efficacy of phased joint intervention [percutaneous transhepatic variceal embolization (PTVE) + phased partial splenic embolization (PSE)] in patients with portal hypertension complicated by esophageal variceal bleeding and hypersplenism and the effect of this intervention on interleukin-35 (IL-35)/IL-17 expression. A review of 53 patients with portal hypertension caused by liver cirrhosis and complicated by esophageal variceal bleeding and hypersplenism treated with phased joint intervention was conducted, and portal hemodynamics, routine blood examinations and liver function were determined. Quantitative polymerase chain reaction (qPCR) was used to evaluate EBI3, FOXP3 and IL-17 mRNA expression levels in peripheral blood mononuclear cells (PBMC) before and after the phased joint intervention, while western blot analysis was used to determine their protein expression. All 53 patients required emergency hemostasis resulting in an emergency hemostatic rate of 100%. Varicose veins disappeared, portal hemodynamics and liver function improved subsequent to the intervention. The expression levels of EBI3, FOXP3 and IL-17 mRNA in the postoperative group were significantly lower than the preoperative levels (P<0.01). The protein expression levels of EBI3, FOXP3 and IL-17 in the postoperative group were reduced compared with the preoperative levels. The concentrations of IL-35, IL-6 and IL-17 in peripheral blood were significantly reduced after the phased joint intervention (P<0.01). Serum IL-35, IL-6 and IL-17 levels were positively correlated with total bilirubin and international normalized ratio, and negatively correlated with albumin. The phased joint intervention can effectively treat esophageal variceal bleeding and hypersplenism, and improve liver function. The efficacy of this intervention may be associated with the regulation of immune function.
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Affiliation(s)
- Yugang Wang
- Department of Gastroenterology, Shanghai Changning Central Hospital, Shanghai 200336, P.R. China
| | - Jinbin Dong
- Department of Gastroenterology, Shanghai Changning Central Hospital, Shanghai 200336, P.R. China
| | - Wenying Meng
- Department of Gastroenterology, Shanghai Changning Central Hospital, Shanghai 200336, P.R. China
| | - Jiali Ma
- Department of Gastroenterology, Shanghai Changning Central Hospital, Shanghai 200336, P.R. China
| | - Na Wang
- Department of Gastroenterology, Shanghai Changning Central Hospital, Shanghai 200336, P.R. China
| | - Jue Wei
- Department of Gastroenterology, Shanghai Changning Central Hospital, Shanghai 200336, P.R. China
| | - Min Shi
- Department of Gastroenterology, Shanghai Changning Central Hospital, Shanghai 200336, P.R. China
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192
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Martin-Murphy BV, You Q, Wang H, De La Houssaye BA, Reilly TP, Friedman JE, Ju C. Mice lacking natural killer T cells are more susceptible to metabolic alterations following high fat diet feeding. PLoS One 2014; 9:e80949. [PMID: 24465369 PMCID: PMC3896335 DOI: 10.1371/journal.pone.0080949] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Accepted: 10/14/2013] [Indexed: 12/12/2022] Open
Abstract
Current estimates suggest that over one-third of the adult population has metabolic syndrome and three-fourths of the obese population has non-alcoholic fatty liver disease (NAFLD). Inflammation in metabolic tissues has emerged as a universal feature of obesity and its co-morbidities, including NAFLD. Natural Killer T (NKT) cells are a subset of innate immune cells that abundantly reside within the liver and are readily activated by lipid antigens. There is general consensus that NKT cells are pivotal regulators of inflammation; however, disagreement exists as to whether NKT cells exert pathogenic or suppressive functions in obesity. Here we demonstrate that CD1d−/− mice, which lack NKT cells, were more susceptible to weight gain and fatty liver following high fat diet (HFD) feeding. Compared with their WT counterparts, CD1d−/− mice displayed increased adiposity and greater induction of inflammatory genes in the liver suggestive of the precursors of NAFLD. Calorimetry studies revealed a significant increase in food intake and trends toward decreased metabolic rate and activity in CD1d−/− mice compared with WT mice. Based on these findings, our results suggest that NKT cells play a regulatory role that helps to prevent diet-induced obesity and metabolic dysfunction and may play an important role in mechanisms governing cross-talk between metabolism and the immune system to regulate energy balance and liver health.
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Affiliation(s)
- Brittany V. Martin-Murphy
- Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Qiang You
- Department of Biotherapy, Second Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Hong Wang
- Division of Endocrinology, Diabetes & Metabolism, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Becky A. De La Houssaye
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Timothy P. Reilly
- Drug Safety Evaluation, Research & Development, Bristol-Myers Squibb Company, Princeton, New Jersey, United States of America
| | - Jacob E. Friedman
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
| | - Cynthia Ju
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States of America
- * E-mail:
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193
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Wirth TC. Spontaneous and therapeutic immune responses in hepatocellular carcinoma: implications for current and future immunotherapies. Expert Rev Gastroenterol Hepatol 2014; 8:101-10. [PMID: 24410473 DOI: 10.1586/17474124.2014.862497] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Hepatocellular carcinoma (HCC) represents a major health problem in the world, ranking fifth in incidence and third in cancer-related deaths. Due to the unique immunosuppressive microenvironment of the liver, HCC develops in an immunotolerant niche posing an important obstacle to immunotherapy. A number of studies, however, have shown immunogenic properties of HCC by demonstrating spontaneous adaptive immune responses during tumor formation and progression. Furthermore, studies examining immune responses during HCC therapy have revealed that conventional treatments such as surgical resection, locoregional therapy and systemic therapy with antibodies, small molecules or chemotherapy induce adaptive immune responses that contribute to therapeutic effects. These observations have provided a basis for clinical trials involving adoptive transfers of T cells or natural killer cells, peptide and dendritic cell vaccinations or, more recently, virotherapy and inhibition of co-inhibitory molecules. Here, spontaneous and therapeutic immune responses in HCC and their implication for current and future immunotherapies are discussed.
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Affiliation(s)
- Thomas C Wirth
- Department of Gastroenterology, Hepatology and Endocrinology, Medical School Hannover, 30625 Hannover, Germany
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194
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ASO-ISHIMOTO Y, YAMAGIWA S, ICHIDA T, MIYAKAWA R, TOMIYAMA C, SATO Y, WATANABE H, AOYAGI Y. Increased activated natural killer T cells in the liver of patients with advancedstage primary biliary cirrhosis. Biomed Res 2014; 35:161-9. [DOI: 10.2220/biomedres.35.161] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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195
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Abstract
The liver is the largest organ in the body and is generally regarded by nonimmunologists as having little or no lymphoid function. However, such is far from accurate. This review highlights the importance of the liver as a lymphoid organ. Firstly, we discuss experimental data surrounding the role of liver as a lymphoid organ. The liver facilitates tolerance rather than immunoreactivity, which protects the host from antigenic overload of dietary components and drugs derived from the gut and it is instrumental to fetal immune tolerance. Loss of liver tolerance leads to autoaggressive phenomena, which if not controlled by regulatory lymphoid populations, may lead to the induction of autoimmune liver diseases. Liver-related lymphoid subpopulations also act as critical antigen-presenting cells. The study of the immunological properties of liver and delineation of the microenvironment of the intrahepatic milieu in normal and diseased livers provides a platform to understand the hierarchy of a series of detrimental events that lead to immune-mediated destruction of the liver and the rejection of liver allografts. The majority of emphasis within this review will be on the normal mononuclear cell composition of the liver. However, within this context, we will discuss selected, but not all, immune-mediated liver disease and attempt to place these data in the context of human autoimmunity.
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Affiliation(s)
- Dimitrios P Bogdanos
- Institute of Liver Studies, Transplantation Immunology and Mucosal Biology, King's College London School of Medicine at King's College Hospital, London, UK
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196
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Wree A, Broderick L, Canbay A, Hoffman HM, Feldstein AE. From NAFLD to NASH to cirrhosis-new insights into disease mechanisms. Nat Rev Gastroenterol Hepatol 2013; 10:627-36. [PMID: 23958599 DOI: 10.1038/nrgastro.2013.149] [Citation(s) in RCA: 445] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
NAFLD has evolved as a serious public health problem in the USA and around the world. In fact, NASH-the most serious form of NAFLD-is predicted to become the leading cause of liver transplantation in the USA by the year 2020. The pathogenesis of NAFLD and NASH, in particular the mechanisms responsible for liver injury and fibrosis, is the result of a complex interplay between host and environmental factors, and is at the centre of intense investigation. In this Review, we focus on recently uncovered aspects of the genetic, biochemical, immunological and molecular events that are responsible for the development and progression of this highly prevalent and potentially serious disease. These studies bring new insight into this complex disorder and have led to the development of novel therapeutic and diagnostic strategies that might enable a personalized approach in the management of this disease.
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Affiliation(s)
- Alexander Wree
- Department of Pediatrics, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92037-0715, USA
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197
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Wang H, Feng D, Park O, Yin S, Gao B. Invariant NKT cell activation induces neutrophil accumulation and hepatitis: opposite regulation by IL-4 and IFN-γ. Hepatology 2013; 58:1474-85. [PMID: 23686838 PMCID: PMC3758807 DOI: 10.1002/hep.26471] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 04/11/2013] [Indexed: 01/12/2023]
Abstract
UNLABELLED Alpha-Galactosylceramide (α-Galcer), a specific agonist for invariant natural killer T (iNKT) cells, is being evaluated in clinical trials for the treatment of viral hepatitis and liver cancer. However, the results from α-Galcer treatment are mixed, partially because of the variety of cytokines produced by activated iNKT cells that have an unknown synergistic effect on the progression of liver disease. It is well documented that injection of α-Galcer induces mild hepatitis with a rapid elevation in the levels of interleukin (IL)-4 and a delayed elevation in the levels of interferon-gamma (IFN-γ), and both of these cytokines are thought to mediate many functions of iNKT cells. Surprisingly, genetic deletion of both IL-4 and IFN-γ aggravated, rather than abolished, α-Galcer-induced iNKT hepatitis. Moreover, genetic ablation of IL-4, the IL-4 receptor, or its downstream signaling molecule signal transducer and activator of transcription (STAT)6 ameliorated α-Galcer-induced neutrophil infiltration, liver injury, and hepatitis. In contrast, genetic deletion of IFN-γ, the IFN-γ receptor, or its downstream signaling molecule STAT1 enhanced liver neutrophil accumulation, thereby exacerbating liver injury and hepatitis. Moreover, depletion of neutrophils eradicated α-Galcer-induced liver injury in wild-type, STAT1 knockout, and IFN-γ knockout mice. CONCLUSION Our results propose a model in which activated iNKT cells rapidly release IL-4, which promotes neutrophil survival and hepatitis but also sequentially produce IFN-γ, which acts in a negative feedback loop to ameliorate iNKT hepatitis by inducing neutrophil apoptosis. Thus, modification of iNKT production of IL-4 and IFN-γ may have the potential to improve the efficacy of α-Galcer in the treatment of liver disease.
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Affiliation(s)
- Hua Wang
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD
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198
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Barbosa KVBD, Teixeira R, Bassetti-Soares E, de Souza AFM, Penido JMMO, Teixeira-Carvalho A, Martins-Filho OA. Phenotypic features of innate and adaptive immunity in patients with chronic hepatitis C and end-stage renal disease. Liver Int 2013; 33:1349-56. [PMID: 23692646 DOI: 10.1111/liv.12204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Accepted: 04/20/2013] [Indexed: 12/18/2022]
Abstract
BACKGROUND The knowledge of the immunological profile of patients with chronic hepatitis C (CHC) and end-stage renal disease (ESRD) on haemodialysis (HD) is still limited. AIMS This study investigated the immune response profile in HCV patients with concomitant ESRD focusing on the influence of the renal disease on the phenotypic profile of peripheral blood lymphocytes. METHODS Immunophenotypic features of peripheral blood leucocytes were assessed by flow cytometry in two distinct groups: HCV patients with ESRD (CHC+ESRD, n = 16) and HCV patients with normal renal function (CHC, n = 20). Two control groups that were included were as follows: HCV negative blood donors (BD, n = 15) and HCV negative patients with ESRD (ESRD, n = 19). RESULTS Higher frequency of macrophage-like and pro-inflammatory monocytes along with enhanced frequency of CD3(-) CD16(-) CD56(+) , mainly CD56(dim) NK-cells, were the hallmark of CHC+ESRD patients. Lower frequency of B cells with significant decreased of B1 and CD23(+) B-cells were associated with ESRD, regardless the HCV infection. Although higher rates of activated CD4(+) and CD8(+) T cells were observed in the CHC and CHC+ESRD groups, the chemotaxis of T-cell subsets, based on their chemokine receptor expression, was affected by ESRD. CONCLUSIONS Chronic hepatitis C patients with ESRD on HD exhibit distinctive phenotypic profile of circulating leucocytes. It may be implicated in the natural history of HCV infection in this particular group of patients and warrants further investigation.
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Affiliation(s)
- Kátia V B D Barbosa
- Serviço de Gastroenterologia, Hospital Universitário - Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil
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199
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Li Y, Cao G, Zheng X, Wang J, Wei H, Tian Z, Sun R. CRACC-CRACC interaction between Kupffer and NK cells contributes to poly I:C/D-GalN induced hepatitis. PLoS One 2013; 8:e76681. [PMID: 24098802 PMCID: PMC3786926 DOI: 10.1371/journal.pone.0076681] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Accepted: 08/23/2013] [Indexed: 12/14/2022] Open
Abstract
CD2-like receptor activating cytotoxic cells (CRACC) is known as a critical activating receptor of natural killer (NK) cells. We have previously reported that NK cells contribute to Poly I:C/D-galactosamine (D-GalN)-induced fulminant hepatitis. Since natural killer group 2, member D (NKG2D) is considered critical but not the only activating receptor for NK cells, we investigated the role of CRACC in this model. We found that CRACC was abundant on hepatic NK cells but with low expression levels on Kupffer cells under normal conditions. Expression of CRACC on NK cells and Kupffer cells was remarkably upregulated after poly I:C injection. Hepatic CRACC mRNA levels were also upregulated in Poly I:C/D-GalN-treated mice, and correlated positively with the serum alanine aminotransferase (ALT) levels. CRACC expression on Kupffer cells was specifically silenced by nano-particle encapsulated siRNA in vivo, which significantly reduced Poly I:C/D-GalN-induced liver injury. In co-culture experiments, it was further verified that silencing CRACC expression or blockade of CRACC activation by mAb reduced the production of interferon (IFN)-γ and tumor necrosis factor (TNF)-α. Collectively, our findings suggest that CRACC-CRACC interaction between NK cells and resident Kupffer cells contributes to Poly I:C/D-GalN-induced fulminant hepatitis.
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Affiliation(s)
- Yangxi Li
- Department of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Guoshuai Cao
- Department of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Xiaodong Zheng
- Department of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Jun Wang
- Department of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
- Hefei National Laboratory for Physical Sciences at Microscale, Hefei, Anhui, China
| | - Haiming Wei
- Department of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
- Hefei National Laboratory for Physical Sciences at Microscale, Hefei, Anhui, China
| | - Zhigang Tian
- Department of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
- Hefei National Laboratory for Physical Sciences at Microscale, Hefei, Anhui, China
| | - Rui Sun
- Department of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
- Hefei National Laboratory for Physical Sciences at Microscale, Hefei, Anhui, China
- * E-mail:
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200
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Björkström NK, Kekäläinen E, Mjösberg J. Tissue-specific effector functions of innate lymphoid cells. Immunology 2013; 139:416-27. [PMID: 23489335 DOI: 10.1111/imm.12098] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 02/25/2013] [Accepted: 02/27/2013] [Indexed: 02/06/2023] Open
Abstract
Innate lymphoid cells (ILCs) is the collective term for a group of related innate lymphocytes, including natural killer (NK) cells and the more recently discovered non-NK ILCs, which all lack rearranged antigen receptors such as those expressed by T and B cells. Similar to NK cells, the newly discovered ILCs depend on the transcription factor Id2 and the common γ-chain of the interleukin-2 receptor for development. However, in contrast to NK cells, non-NK ILCs also require interleukin-7. In addition to the cytotoxic functions of NK cells, assuring protection against tumour development and viruses, new data indicate that ILCs contribute to a wide range of homeostatic and pathophysiological conditions in various organs via specialized cytokine production capabilities. Here we summarize current knowledge on ILCs with a particular emphasis on their tissue-specific effector functions, in the gut, liver, lungs and uterus. When possible, we try to highlight the role that these cells play in humans.
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Affiliation(s)
- Niklas K Björkström
- Centre for Infectious Medicine, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
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