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Rebordão MR, Amaral A, Fernandes C, Silva E, Lukasik K, Szóstek-Mioduchowska A, Pinto-Bravo P, Galvão A, Skarzynski DJ, Ferreira-Dias G. Enzymes Present in Neutrophil Extracellular Traps May Stimulate the Fibrogenic PGF 2α Pathway in the Mare Endometrium. Animals (Basel) 2021; 11:ani11092615. [PMID: 34573581 PMCID: PMC8469524 DOI: 10.3390/ani11092615] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/02/2021] [Accepted: 09/02/2021] [Indexed: 12/23/2022] Open
Abstract
Simple Summary Endometrosis is a fibrotic disease in mare endometrium whose pathological mechanisms remain obscure. Prostaglandin (PG)F2α, despite modulating reproductive physiological processes, may also provoke local pathological collagen deposition (fibrogenesis). Neutrophil extracellular traps (NETs) released during inflammation have been linked to fibrogenesis in several tissues. We have previously shown that enzymes found in NETs increase in vitro collagen production in mare endometrium. In this study, activation of PGF2α-pathway in equine endometrial explants challenged in vitro by enzymes found in NETs is shown. Our results indicate that both endocrine microenvironment (estrous cycle phase) and healthy or pathological conditions of endometrial tissues play an important role in PGF2α-pathway activation. In the endometrium of the follicular phase, we have observed both high production of PGF2α and/or PGF2α receptor gene transcription under the action of enzymes found in NETs, both conditions associated with fibrogenesis in other tissues. Nevertheless, transcription of the PGF2α receptor gene does not appear to be hormone-dependent, albeit their levels seem to be dependent on endometrial category in the mid-luteal phase. This study suggests that enzymes existing in NETs may instigate changes on PGF2α mediators, which may become an additional mechanism of fibrogenesis in mare endometrium. Abstract Endometrosis, a fibrotic disease of mare endometrium, impairs uterine function. Prostaglandins (PG), despite modulating reproductive physiological functions, may also cause local pathological collagen deposition (fibrogenesis). We have previously shown that neutrophil extracellular traps (NETs) may also favor mare endometrosis. The aim of this study was to investigate the effect of enzymes present in NETs on PGF2α-pathway activation. Kenney and Doig’s type I/IIA and IIB/III mare endometria, from follicular phase (FLP) and mid-luteal (MLP) phase, were cultured in vitro in the presence of NETs enzymes (elastase, cathepsin-G or myeloperoxidase). Production of PGF2α (EIA) and transcription (qPCR) of its synthases (PTGS2, AKR1C3) and receptor (PTGFR) genes were evaluated. PGF2α and PTGFR were influenced by endometrial category and estrous cycle phase. In FLP endometrium, NETs enzymes induced both high PGF2α production and/or PTGFR transcription. In MLP type I/IIA tissues, down-regulation of PTGFR transcripts occurred. However, in MLP type IIB/III endometrium, high levels of PTGFR transcripts were induced by NETs enzymes. As PGF2α-pathway activation facilitates fibrogenesis in other tissues, PGF2α may be involved in endometrosis pathogenesis. In the mare, the endocrine microenvironment of healthy and pathological endometrium might modulate the PGF2α pathway, as well as fibrosis outcome on endometrium challenged by NETs enzymes.
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Affiliation(s)
- Maria Rosa Rebordão
- CIISA—Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal; (M.R.R.); (A.A.); (C.F.); (E.S.)
- Polytechnic Institute of Coimbra, College of Agriculture, 3045-601 Coimbra, Portugal;
| | - Ana Amaral
- CIISA—Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal; (M.R.R.); (A.A.); (C.F.); (E.S.)
| | - Carina Fernandes
- CIISA—Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal; (M.R.R.); (A.A.); (C.F.); (E.S.)
| | - Elisabete Silva
- CIISA—Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal; (M.R.R.); (A.A.); (C.F.); (E.S.)
| | - Karolina Lukasik
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of PAS, 10-748 Olsztyn, Poland; (K.L.); (A.S.-M.); (A.G.); (D.J.S.)
| | - Anna Szóstek-Mioduchowska
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of PAS, 10-748 Olsztyn, Poland; (K.L.); (A.S.-M.); (A.G.); (D.J.S.)
| | - Pedro Pinto-Bravo
- Polytechnic Institute of Coimbra, College of Agriculture, 3045-601 Coimbra, Portugal;
| | - António Galvão
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of PAS, 10-748 Olsztyn, Poland; (K.L.); (A.S.-M.); (A.G.); (D.J.S.)
| | - Dariusz J. Skarzynski
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of PAS, 10-748 Olsztyn, Poland; (K.L.); (A.S.-M.); (A.G.); (D.J.S.)
| | - Graça Ferreira-Dias
- CIISA—Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal; (M.R.R.); (A.A.); (C.F.); (E.S.)
- Correspondence: ; Tel.: +351-213-652-859
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Bile acid activated receptors: Integrating immune and metabolic regulation in non-alcoholic fatty liver disease. LIVER RESEARCH 2021. [DOI: 10.1016/j.livres.2021.08.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Nati M, Chung KJ, Chavakis T. The Role of Innate Immune Cells in Nonalcoholic Fatty Liver Disease. J Innate Immun 2021; 14:31-41. [PMID: 34515137 DOI: 10.1159/000518407] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/26/2021] [Indexed: 11/19/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a very common hepatic pathology featuring steatosis and is linked to obesity and related conditions, such as the metabolic syndrome. When hepatic steatosis is accompanied by inflammation, the disorder is defined as nonalcoholic steatohepatitis (NASH), which in turn can progress toward fibrosis development that can ultimately result in cirrhosis. Cells of innate immunity, such as neutrophils or macrophages, are central regulators of NASH-related inflammation. Recent studies utilizing new experimental technologies, such as single-cell RNA sequencing, have revealed substantial heterogeneity within the macrophage populations of the liver, suggesting distinct functions of liver-resident Kupffer cells and recruited monocyte-derived macrophages with regards to regulation of liver inflammation and progression of NASH pathogenesis. Herein, we discuss recent developments concerning the function of innate immune cell subsets in NAFLD and NASH.
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Affiliation(s)
- Marina Nati
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital and Faculty of Medicine Carl Gustav Carus, TU Dresden, Dresden, Germany.,Paul Langerhans Institute Dresden of Helmholtz Center Munich at the University Hospital and Faculty of Medicine Carl Gustav Carus of TU Dresden, Dresden, Germany.,German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Kyoung-Jin Chung
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital and Faculty of Medicine Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Triantafyllos Chavakis
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital and Faculty of Medicine Carl Gustav Carus, TU Dresden, Dresden, Germany.,Paul Langerhans Institute Dresden of Helmholtz Center Munich at the University Hospital and Faculty of Medicine Carl Gustav Carus of TU Dresden, Dresden, Germany.,German Center for Diabetes Research (DZD), Neuherberg, Germany
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Miah P, Mohona SBS, Rahman MM, Subhan N, Khan F, Hossain H, Sharker SM, Alam MA. Supplementation of cumin seed powder prevents oxidative stress, hyperlipidemia and non-alcoholic fatty liver in high fat diet fed rats. Biomed Pharmacother 2021; 141:111908. [PMID: 34328087 DOI: 10.1016/j.biopha.2021.111908] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 06/22/2021] [Accepted: 07/06/2021] [Indexed: 02/06/2023] Open
Abstract
The present investigation was an attempt to evaluate the hypoglycemic, lipid-lowering, antioxidant and hepatoprotective effects of cumin (Cuminum cyminum family: Apiaceae) supplementation in high fat (HF) diet fed rats. Male Wistar rats were divided into four groups, such as control, control+ cumin, HF and HF+ cumin. Oral glucose tolerance test, plasma lipids, oxidative stress parameters, antioxidant enzymes activities, and liver dysfunction marker enzyme activities were evaluated. Additionally, histological staining of liver tissue was performed to evaluate the inflammatory cells infiltration, iron deposition and fibrosis. The current investigation demonstrated that 1% (w/w) supplementation of cumin powder significantly reduced HF diet-induced glucose intolerance, epididymal and mesenteric fat wet weights and lipid parameters like triglycerides, total cholesterol and low-density lipoproteins. Oxidative stress-related biomarkers including thiobarbituric acid reactive substances (TBARS), nitric oxide (NO) and advanced oxidation protein product (APOP) were also reduced by cumin supplementation. Moreover, HF-diet increased the activity of hepatic biomarker enzymes such as alanine transaminase (ALT) and alkaline phosphatase (ALP) activities which were significantly reduced by cumin powder supplementation. On the other hand, cumin powder supplementation was able to restore the reduced glutathione level with parallel augmentation of the antioxidant enzymes activities such as superoxide dismutase (SOD) and catalase in liver of HF diet-fed rats. Additionally, histological assessments confirmed that cumin powder supplementation also normalized the fat droplet deposition and inflammatory cells infiltration in the liver of HF diet-fed rats. This study suggests that cumin powder supplementation ameliorates dyslipidemia, oxidative stress and hepatic damage in HF diet-fed rats.
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Affiliation(s)
- Pintu Miah
- Department of Pharmaceutical Sciences, North South University Bangladesh, Bangladesh
| | | | - Md Mizanur Rahman
- Department of Pharmaceutical Sciences, North South University Bangladesh, Bangladesh
| | - Nusrat Subhan
- Department of Pharmaceutical Sciences, North South University Bangladesh, Bangladesh.
| | - Ferdous Khan
- Department of Pharmaceutical Sciences, North South University Bangladesh, Bangladesh
| | - Hemayet Hossain
- BCSIR Laboratories, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Shazid Md Sharker
- Department of Pharmaceutical Sciences, North South University Bangladesh, Bangladesh
| | - Md Ashraful Alam
- Department of Pharmaceutical Sciences, North South University Bangladesh, Bangladesh.
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Cho Y, Szabo G. Two Faces of Neutrophils in Liver Disease Development and Progression. Hepatology 2021; 74:503-512. [PMID: 33314193 PMCID: PMC9235297 DOI: 10.1002/hep.31680] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 11/06/2020] [Accepted: 12/02/2020] [Indexed: 12/12/2022]
Abstract
Neutrophils, the most abundant type of leukocyte in human blood, play a major role in host defense against invading pathogens and in sterile injury. Neutrophil infiltration is characteristic of inflammation because of its antimicrobial and cytotoxic activities. Neutrophils also actively participate in the resolution of inflammation and subsequent tissue repair by acting as a critical mediator between the inflammation and resolution phases of tissue damage. However, neutrophils that are consistently exposed to inflammatory conditions lose their self-resolving capabilities and maintain an inflammatory phenotype, further exacerbating tissue damage. The current review describes how neutrophils interact with tissue microenvironments and acquire disease-specific phenotypes under chronic inflammatory conditions. Here, we aim to provide a better understanding of neutrophil-mediated pathogenesis of various liver diseases.
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Affiliation(s)
- Yeonhee Cho
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA;,Department of Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Gyongyi Szabo
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
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Wu CL, Yin R, Wang SN, Ying R. A Review of CXCL1 in Cardiac Fibrosis. Front Cardiovasc Med 2021; 8:674498. [PMID: 33996954 PMCID: PMC8113392 DOI: 10.3389/fcvm.2021.674498] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 04/01/2021] [Indexed: 12/31/2022] Open
Abstract
Chemokine C-X-C motif ligand-1 (CXCL1), principally expressed in neutrophils, macrophages and epithelial cells, is a valid pro-inflammatory factor which performs an important role in mediating the infiltration of neutrophils and monocytes/macrophages. Elevated serum level of CXCL1 is considered a pro-inflammatory reaction by the organism. CXCL1 is also related to diverse organs fibrosis according to relevant studies. A growing body of evidence suggests that CXCL1 promotes the process of cardiac remodeling and fibrosis. Here, we review structure and physiological functions of CXCL1 and recent progress on the effects and mechanisms of CXCL1 in cardiac fibrosis. In addition, we explore the role of CXCL1 in the fibrosis of other organs. Besides, we probe the possibility that CXCL1 can be a therapeutic target for the treatment of cardiac fibrosis in cardiovascular diseases.
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Affiliation(s)
- Cheng-Long Wu
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Ran Yin
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Su-Nan Wang
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Ru Ying
- Department of Cardiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
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Chen S, Guo H, Xie M, Zhou C, Zheng M. Neutrophil: An emerging player in the occurrence and progression of metabolic associated fatty liver disease. Int Immunopharmacol 2021; 97:107609. [PMID: 33887577 DOI: 10.1016/j.intimp.2021.107609] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/01/2021] [Accepted: 03/20/2021] [Indexed: 12/12/2022]
Abstract
Metabolic-associated fatty liver disease (MAFLD) is a common type of chronic liver disease characterized by excessive lipid accumulation in hepatocytes, but the pathogenesis is still unclear. Neutrophils, the most abundant immune cells in the human body, defend against pathogens and regulate the inflammatory response. Recent studies have indicated that excessive liver infiltration of neutrophils is a significant histological hallmark of MAFLD, and neutrophils and their derived granule proteins participate in different stages of MAFLD, including hepatic steatosis, inflammation, fibrosis, cirrhosis and hepatocellular carcinoma. Hence, in this review, we summarize the role of neutrophils in the occurrence and progression of MAFLD and provide a perspective for the clinical application of neutrophils in MAFLD diagnosis and treatment.
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Affiliation(s)
- Shiwei Chen
- The State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou 310000, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310000, China; National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, China
| | - Huiting Guo
- The State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou 310000, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310000, China; National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, China
| | - Mingjie Xie
- The State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou 310000, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310000, China; National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, China
| | - Cheng Zhou
- The State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou 310000, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310000, China; National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, China.
| | - Min Zheng
- The State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou 310000, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou 310000, China; National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310000, China.
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Rahman MM, Shahab NB, Miah P, Rahaman MM, Kabir AU, Subhan N, Khan AA, Afroze M, Khan M, Ahmed KS, Hossain H, Haque MA, Alam MA. Polyphenol-rich leaf of Aphanamixis polystachya averts liver inflammation, fibrogenesis and oxidative stress in ovariectomized Long-Evans rats. Biomed Pharmacother 2021; 138:111530. [PMID: 33773464 DOI: 10.1016/j.biopha.2021.111530] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/10/2021] [Accepted: 03/17/2021] [Indexed: 02/06/2023] Open
Abstract
Aphanamixis polystachya (Wall.) R.Parker, locally known as Pithraj, is a medicinal herb having enormous traditional applications. However, the scientific rationale underlying the ethnomedicinal claims was not well-founded. The current investigation aimed to explore the mechanistic insights of protective effects of ethanol extract of A. polystachya leaf (PT), given orally, on the chemical-intoxicated hepatic inflammation and fibrosis in Long-Evans female overiectomized rats. The GC-MS and HPLC-DAD analysis of PT revealed the presence of several bioactive metabolites, including polyphenolic compounds. Catechin hydrate, caffeic acid, syringic acid, epicatechin and p-coumaric acid have been identified and quantified in the ethanol extract of PT leaf. Intoxication with CCl4 developed the oxidative stress, fibrosis and inflammation in liver of rats. Moreover, thiobarbituric acid reactive substances (TBARS), nitric oxide (NO), advanced protein oxidation product (APOP) level were found increased; whereas superoxide dismutase (SOD) and catalase activities in the plasma and liver were decreased in CCl4 administered rats. Treatment with PT prominently mitigated the oxidative stress (TBARS, NO, APOP), and inflammatory (MPO) markers and improved the endogenous antioxidant enzymes (catalase and SOD) activities in CCl4-intoxicated rats. Additionally, histological assessment confirmed the clear manifestation of inflammation and fibrosis in the liver of CCl4-intoxicated rats, which was prevented by PT and silymarin treatment. In conclusion, PT treatment may protect the liver in CCl4-administered rats, probably by mitigating oxidative stress, inflammation and fibrosis, and also augmenting the function of the antioxidant enzymes.
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Affiliation(s)
- Md Mizanur Rahman
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh; Department of Pharmacy, International Islamic University Chittagong, Chittagong 4318, Bangladesh
| | | | - Pintu Miah
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Md Mahamudur Rahaman
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Arafat Ulla Kabir
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Nusrat Subhan
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Ahad Ali Khan
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Mirola Afroze
- DRiCM, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Mala Khan
- DRiCM, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - K Shahin Ahmed
- BCSIR Laboratories, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Hemayet Hossain
- BCSIR Laboratories, Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
| | - Md Areeful Haque
- Department of Pharmacy, International Islamic University Chittagong, Chittagong 4318, Bangladesh.
| | - Md Ashraful Alam
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh.
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Tang J, Yan Z, Feng Q, Yu L, Wang H. The Roles of Neutrophils in the Pathogenesis of Liver Diseases. Front Immunol 2021; 12:625472. [PMID: 33763069 PMCID: PMC7982672 DOI: 10.3389/fimmu.2021.625472] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 01/25/2021] [Indexed: 01/30/2023] Open
Abstract
Neutrophils are the largest population of circulating leukocytes and the first responder against invading pathogens or other danger signals. Sophisticated machineries help them play critical roles in immunity and inflammation, including phagocytosis, superoxide production, cytokine and chemokine production, degranulation, and formation of neutrophil extracellular traps (NETs). After maturation and release from the bone marrow, neutrophils migrate to inflamed tissues in response to many stimuli. Increasing evidences indicate that neutrophils are critically involved in the pathogenesis of liver diseases, including liver cancer, thus making them promising target for the treatment of liver diseases. Here, we would like to provide the latest finding about the role of neutrophils in liver diseases and discuss the potentiality of neutrophils as target for liver diseases.
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Affiliation(s)
- Jiaojiao Tang
- Division of Life Sciences and Medicine, Cancer Research Center, The First Affiliated Hospital of University of Science and Technology of China, Hefei, China
- International Cooperation Laboratory on Signal Transduction, Ministry of Education Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Shanghai Key Laboratory of Hepato-Biliary Tumor Biology, Eastern Hepatobiliary Surgery Hospital, Shanghai, China
| | - Zijun Yan
- International Cooperation Laboratory on Signal Transduction, Ministry of Education Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Shanghai Key Laboratory of Hepato-Biliary Tumor Biology, Eastern Hepatobiliary Surgery Hospital, Shanghai, China
- Graduate Management Unit, Shanghai Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Qiyu Feng
- Division of Life Sciences and Medicine, Cancer Research Center, The First Affiliated Hospital of University of Science and Technology of China, Hefei, China
- International Cooperation Laboratory on Signal Transduction, Ministry of Education Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Shanghai Key Laboratory of Hepato-Biliary Tumor Biology, Eastern Hepatobiliary Surgery Hospital, Shanghai, China
- National Center for Liver Cancer, Shanghai, China
| | - Lexing Yu
- Division of Life Sciences and Medicine, Cancer Research Center, The First Affiliated Hospital of University of Science and Technology of China, Hefei, China
- International Cooperation Laboratory on Signal Transduction, Ministry of Education Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Shanghai Key Laboratory of Hepato-Biliary Tumor Biology, Eastern Hepatobiliary Surgery Hospital, Shanghai, China
- National Center for Liver Cancer, Shanghai, China
| | - Hongyang Wang
- Division of Life Sciences and Medicine, Cancer Research Center, The First Affiliated Hospital of University of Science and Technology of China, Hefei, China
- International Cooperation Laboratory on Signal Transduction, Ministry of Education Key Laboratory on Signaling Regulation and Targeting Therapy of Liver Cancer, Shanghai Key Laboratory of Hepato-Biliary Tumor Biology, Eastern Hepatobiliary Surgery Hospital, Shanghai, China
- National Center for Liver Cancer, Shanghai, China
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Yu HH, Qiu YX, Li B, Peng CY, Zeng R, Wang W. Kadsura heteroclita stem ethanol extract protects against carbon tetrachloride-induced liver injury in mice via suppression of oxidative stress, inflammation, and apoptosis. JOURNAL OF ETHNOPHARMACOLOGY 2021; 267:113496. [PMID: 33091494 DOI: 10.1016/j.jep.2020.113496] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 10/12/2020] [Accepted: 10/15/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Kadsura heteroclita stem (KHS) is a well-known hepatoprotective Tujia ethnomedicine (folk named Xuetong), has long been used for the prevention and treatment of hepatitis and liver diseases. AIM OF THE STUDY To explore the protective effects of KHS against carbon tetrachloride (CCl4)-induced liver injury and the underlying mechanism, particularly antioxidative, anti-inflammatory, and anti-apoptotic potentials. MATERIALS AND METHODS The acute toxicity of KHS was measured by the method of maximum tolerated dose (MTD). Liver injury in mice was induced by intraperitoneal injection of 25% carbon tetrachloride (olive oil solubilization) 2 times every week. After modeling, mice in KHS groups were treated with KHS at 100, 200, 400 mg/kg/d, mice in positive control group were treated with bifendate (30 mg/kg/d), and mice in normal and model groups were given ultrapure water. After 4 weeks of treatment, blood of mice was taken from the orbital venous plexus before mice euthanized, the liver, spleen, and thymus of mice were weighed by dissecting the abdominal cavity after mice euthanized. Moreover, the liver of mice was selected for histological examination. The alanine aminotransferase (ALT) and aspartate aminotransferase (AST) activities in mice serum were measured using the automatic biochemical analyzer. The levels of superoxide dismutase (SOD), myeloperoxidase (MPO), malondialdehyde (MDA), glutathione peroxidase (GPX-2), tumor necrosis factor (TNF-α), interleukin-6 (IL-6), interleukin-10 (IL-10), Bcl-2-associated X (Bax), B-cell lymphoma-2 (Bcl-2), Caspase-3, and Caspase-8 in mice liver were measured by Elisa kits. Furthermore, the protein expression of Bcl-2 and Bax in mice liver tissue was detected by Western blot. RESULTS The MTD of KHS was determined to be 26 g/kg in both sexes of mice. Treatment with KHS dose-dependently protected the liver and other main organs against CCl4-induced liver injury in mice. The ALT and AST levels in mice liver were significantly reduced after treatment with KHS at the dose of 100, 200, and 400 mg/kg. In addition, the liver histopathological analyses revealed that KHS markedly alleviated inflammatory cell infiltration, hepatic fibrosis, hepatocyte ballooning, necrosis and severe apoptosis of hepatocytes induced by CCl4. Further assay indicated that KHS significantly suppressed the production of MDA and MPO, while markedly increased the level of SOD and GPx-2. The TNF-α and IL-6 level in mice liver tissue were decreased by KHS, whereas the IL-10 level was increased. KHS also inhibited hepatocyte apoptosis by significantly reducing the expression of Bax, Caspase-3, Caspase-8, as well as increasing the expression of Bcl-2. Besides, the Western blot results strongly demonstrated that KHS inhibited hepatocyte apoptosis, as evidenced by reducing the expression of Bax protein and increasing the expression of Bcl-2 protein in liver injury tissues. CONCLUSIONS This research firstly clarified that KHS has a significant protective effect against CCl4-induced liver injury, which might be closely related to alleviating oxidative stress, reducing inflammatory response, and inhibiting hepatocyte apoptosis.
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Affiliation(s)
- Huang-He Yu
- TCM and Ethnomedicine Innovation & Development International Laboratory, And Innovative Materia Medica Research Institute, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, PR China
| | - Yi-Xing Qiu
- TCM and Ethnomedicine Innovation & Development International Laboratory, And Innovative Materia Medica Research Institute, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, PR China
| | - Bin Li
- TCM and Ethnomedicine Innovation & Development International Laboratory, And Innovative Materia Medica Research Institute, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, PR China
| | - Cai-Yun Peng
- TCM and Ethnomedicine Innovation & Development International Laboratory, And Innovative Materia Medica Research Institute, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, PR China
| | - Rong Zeng
- TCM and Ethnomedicine Innovation & Development International Laboratory, And Innovative Materia Medica Research Institute, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, PR China.
| | - Wei Wang
- TCM and Ethnomedicine Innovation & Development International Laboratory, And Innovative Materia Medica Research Institute, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, PR China.
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Peiseler M, Tacke F. Inflammatory Mechanisms Underlying Nonalcoholic Steatohepatitis and the Transition to Hepatocellular Carcinoma. Cancers (Basel) 2021; 13:730. [PMID: 33578800 PMCID: PMC7916589 DOI: 10.3390/cancers13040730] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 12/24/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a rising chronic liver disease and comprises a spectrum from simple steatosis to nonalcoholic steatohepatitis (NASH) to end-stage cirrhosis and risk of hepatocellular carcinoma (HCC). The pathogenesis of NAFLD is multifactorial, but inflammation is considered the key element of disease progression. The liver harbors an abundance of resident immune cells, that in concert with recruited immune cells, orchestrate steatohepatitis. While inflammatory processes drive fibrosis and disease progression in NASH, fueling the ground for HCC development, immunity also exerts antitumor activities. Furthermore, immunotherapy is a promising new treatment of HCC, warranting a more detailed understanding of inflammatory mechanisms underlying the progression of NASH and transition to HCC. Novel methodologies such as single-cell sequencing, genetic fate mapping, and intravital microscopy have unraveled complex mechanisms behind immune-mediated liver injury. In this review, we highlight some of the emerging paradigms, including macrophage heterogeneity, contributions of nonclassical immune cells, the role of the adaptive immune system, interorgan crosstalk with adipose tissue and gut microbiota. Furthermore, we summarize recent advances in preclinical and clinical studies aimed at modulating the inflammatory cascade and discuss how these novel therapeutic avenues may help in preventing or combating NAFLD-associated HCC.
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Affiliation(s)
- Moritz Peiseler
- Department of Hepatology & Gastroenterology, Charité University Medicine Berlin, 13353 Berlin, Germany;
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
- Department of Pharmacology & Physiology, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Frank Tacke
- Department of Hepatology & Gastroenterology, Charité University Medicine Berlin, 13353 Berlin, Germany;
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Long-Term Aspartame Administration Leads to Fibrosis, Inflammasome Activation, and Gluconeogenesis Impairment in the Liver of Mice. BIOLOGY 2021; 10:biology10020082. [PMID: 33499218 PMCID: PMC7911935 DOI: 10.3390/biology10020082] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/19/2021] [Accepted: 01/20/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Aspartame is an artificial sweetener used in foods and beverages worldwide. However, it is linked to oxidative stress, inflammation, and liver damage through mechanisms that are not fully elucidated yet. This work aimed to investigate the effects of long-term administration of aspartame on the oxidative and inflammatory mechanisms associated with liver fibrosis progression in mice. METHODS Mice were divided into two groups with six animals each: control and aspartame. Aspartame (80 mg/kg, via oral) or vehicle was administrated for 12 weeks. RESULTS Aspartame caused liver damage and elevated serum transaminase levels. Aspartame also generated liver fibrosis, as evidenced by histology analysis, and pro-fibrotic markers' upregulation, including transforming growth factor β 1, collagen type I alpha 1, and alpha-smooth muscle actin. Furthermore, aspartame reduced nuclear factor erythroid 2-related factor 2 (Nrf2) activation and enzymatic antioxidant activity and increased lipid peroxidation, which triggered NOD-like receptor containing protein 3 (NLRP3) inflammasome activation and p53 induction. Furthermore, aspartame reduced peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC-1α) levels, possibly through p53 activation. This PGC-1α deficiency could be responsible for the changes in lipid profile in serum, total lipid accumulation, and gluconeogenesis impairment in liver, evidenced by the gluconeogenic enzymes' downregulation, thus causing hypoglycemia. CONCLUSIONS This work provides new insights to understand the mechanisms related to the adverse effects of aspartame on liver tissue.
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Myeloperoxidase Inhibition Decreases the Expression of Collagen and Metallopeptidase in Mare Endometria under In Vitro Conditions. Animals (Basel) 2021; 11:ani11010208. [PMID: 33467081 PMCID: PMC7830995 DOI: 10.3390/ani11010208] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/21/2020] [Accepted: 01/14/2021] [Indexed: 12/19/2022] Open
Abstract
Neutrophils can originate neutrophil extracellular traps (NETs). Myeloperoxidase (MPO) is a peroxidase found in NETs associated to equine endometrosis and can be inhibited by 4-aminobenzoic acid hydrazide (ABAH). Metallopeptidases (MMPs) participate in extracellular matrix stability and fibrosis development. The objectives of this in vitro work were to investigate, in explants of mare's endometrium, (i) the ABAH capacity to inhibit MPO-induced collagen type I (COL1) expression; and (ii) the action of MPO and ABAH on the expression and gelatinolytic activity of MMP-2/-9. Explants retrieved from the endometrium of mares in follicular or mid-luteal phases were treated with MPO, ABAH, or their combination, for 24 or 48 h. The qPCR analysis measured the transcription of COL1A2, MMP2, and MMP9. Western blot and zymography were performed to evaluate COL1 protein relative abundance and gelatinolytic activity of MMP-2/-9, respectively. Myeloperoxidase elevated COL1 relative protein abundance at both treatment times in follicular phase (p < 0.05). The capacity of ABAH to inhibit MPO-induced COL1 was detected in follicular phase at 48 h (p < 0.05). The gelatinolytic activity of activated MMP-2 augmented in mid-luteal phase at 24 h after MPO treatment, but it was reduced with MPO+ABAH treatment. The activity of MMP-9 active form augmented in MPO-treated explants. However, this effect was inhibited by ABAH in the follicular phase at 48 h (p < 0.05). By inhibiting the pro-fibrotic effects of MPO, it might be possible to reduce the development of endometrosis. Metallopeptidase-2 might be involved in an acute response to MPO in the mid-luteal phase, while MMP-9 might be implicated in a prolonged exposition to MPO in the follicular phase.
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64
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Hwang S, Yun H, Moon S, Cho YE, Gao B. Role of Neutrophils in the Pathogenesis of Nonalcoholic Steatohepatitis. Front Endocrinol (Lausanne) 2021; 12:751802. [PMID: 34707573 PMCID: PMC8542869 DOI: 10.3389/fendo.2021.751802] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/23/2021] [Indexed: 12/18/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) includes a spectrum of liver disorders, from fatty liver to nonalcoholic steatohepatitis (NASH), cirrhosis, and hepatocellular carcinoma. Compared with fatty liver, NASH is characterized by increased liver injury and inflammation, in which liver-infiltrating immune cells, with neutrophil infiltration as a hallmark of NASH, play a critical role in promoting the progression of fatty liver to NASH. Neutrophils are the first responders to injury and infection in various tissues, establishing the first line of defense through multiple mechanisms such as phagocytosis, cytokine secretion, reactive oxygen species production, and neutrophil extracellular trap formation; however, their roles in the pathogenesis of NASH remain obscure. The current review summarizes the roles of neutrophils that facilitate the progression of fatty liver to NASH and their involvement in inflammation resolution during NASH pathogenesis. The notion that neutrophils are potential therapeutic targets for the treatment of NASH is also discussed.
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Affiliation(s)
- Seonghwan Hwang
- College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan, South Korea
| | - Hwayoung Yun
- College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan, South Korea
| | - Sungwon Moon
- College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan, South Korea
| | - Ye Eun Cho
- College of Pharmacy and Research Institute for Drug Development, Pusan National University, Busan, South Korea
| | - Bin Gao
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, United States
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Zhou IY, Montesi SB, Akam EA, Caravan P. Molecular Imaging of Fibrosis. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00077-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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66
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Liu K, Wang FS, Xu R. Neutrophils in liver diseases: pathogenesis and therapeutic targets. Cell Mol Immunol 2020; 18:38-44. [PMID: 33159158 PMCID: PMC7852892 DOI: 10.1038/s41423-020-00560-0] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 09/15/2020] [Indexed: 02/06/2023] Open
Abstract
Previously, it was assumed that peripheral neutrophils are a homogeneous population that displays antimicrobial functions. However, recent data have revealed that neutrophils are heterogeneous and are additionally involved in tissue damage and immune regulation. The phenotypic and functional plasticity of neutrophils has been identified in patients with cancer, inflammatory disorders, infections, and other diseases. Currently, neutrophils, with their autocrine, paracrine, and immune modulation functions, have been shown to be involved in liver diseases, including viral hepatitis, nonalcoholic steatohepatitis, alcoholic liver disease, liver fibrosis, cirrhosis, liver failure, and liver cancer. Accordingly, this review summarizes the role of neutrophils in liver diseases.
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Affiliation(s)
- Kai Liu
- Peking University 302 Clinical Medical School, Beijing, China.,Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Fu-Sheng Wang
- Peking University 302 Clinical Medical School, Beijing, China. .,Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China.
| | - Ruonan Xu
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China.
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67
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Zhou IY, Catalano OA, Caravan P. Advances in functional and molecular MRI technologies in chronic liver diseases. J Hepatol 2020; 73:1241-1254. [PMID: 32585160 PMCID: PMC7572718 DOI: 10.1016/j.jhep.2020.06.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/11/2020] [Accepted: 06/15/2020] [Indexed: 02/06/2023]
Abstract
MRI has emerged as the most comprehensive non-invasive diagnostic tool for liver diseases. In recent years, the value of MRI in hepatology has been significantly enhanced by a wide range of contrast agents, both clinically available and under development, that add functional information to anatomically detailed morphological images, or increase the distinction between normal and pathological tissues by targeting molecular and cellular events. Several classes of contrast agents are available for contrast-enhanced hepatic MRI, including i) conventional non-specific extracellular fluid contrast agents for assessing tissue perfusion; ii) hepatobiliary-specific contrast agents that are taken up by functioning hepatocytes and excreted through the biliary system for evaluating hepatobiliary function; iii) superparamagnetic iron oxide particles that accumulate in Kupffer cells; and iv) novel molecular contrast agents that are biochemically targeted to specific molecular/cellular processes for staging liver diseases or detecting treatment responses. The use of different functional and molecular MRI methods enables the non-invasive assessment of disease burden, progression, and treatment response in a variety of liver diseases. A high diagnostic performance can be achieved with MRI by combining imaging biomarkers.
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Affiliation(s)
- Iris Y. Zhou
- Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, MA, United States.,Harvard Medical School, Boston, MA, USA,Institute for Innovation in Imaging (i3), Department of Radiology, Massachusetts General Hospital, Charlestown, MA, USA
| | - Onofrio A. Catalano
- Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, MA, United States.,Harvard Medical School, Boston, MA, USA,Division of Abdominal Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA, United States
| | - Peter Caravan
- Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, MA, United States; Harvard Medical School, Boston, MA, USA; Institute for Innovation in Imaging (i(3)), Department of Radiology, Massachusetts General Hospital, Charlestown, MA, USA.
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68
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Koop AC, Thiele ND, Steins D, Michaëlsson E, Wehmeyer M, Scheja L, Steglich B, Huber S, Schulze Zur Wiesch J, Lohse AW, Heeren J, Kluwe J. Therapeutic Targeting of Myeloperoxidase Attenuates NASH in Mice. Hepatol Commun 2020; 4:1441-1458. [PMID: 33024915 PMCID: PMC7527691 DOI: 10.1002/hep4.1566] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 06/02/2020] [Accepted: 06/14/2020] [Indexed: 12/12/2022] Open
Abstract
Myeloperoxidase (MPO) activity has been associated with the metabolic syndrome, cardiovascular and liver disease. Here, we evaluate the therapeutic potential of MPO inhibition on nonalcoholic steatohepatitis (NASH) and NASH-induced fibrosis, the main determinant of outcomes. MPO plasma levels were elevated in patients with nonalcoholic fatty liver disease (NAFLD) compared with healthy controls. In a second cohort, hepatic MPO messenger RNA expression correlated with higher body mass index and hemoglobin A1c, both being risk factors for NAFLD. We could establish by immunohistochemistry that MPO-positive cells were recruited to the liver in various mouse models of fibrogenic liver injury, including bile duct ligation, carbon tetrachloride (CCl4) treatment, spontaneous liver fibrogenesis in multidrug resistance 2 knockout (MDR2 KO) mice, and NASH-inducing diet. Comparison of MPO-deficient mice and their wild-type littermates exposed to a high-caloric diet revealed that MPO deficiency protects against NASH-related liver injury and fibrosis. In line with this, hepatic gene expression analysis demonstrated a MPO-dependent activation of pathways relevant for wound healing, inflammation, and cell death in NASH. MPO deficiency did not affect NAFLD-independent liver injury and fibrosis in MDR2 KO or CCl4-treated mice. Finally, we treated wild-type mice exposed to NASH-inducing diet with an oral MPO inhibitor. Pharmacological MPO inhibition not only reduced markers of MPO-mediated liver damage, serum alanine aminotransferase levels, and hepatic steatosis, but also significantly decreased NASH-induced liver fibrosis. MPO inhibitor treatment, but not MPO deficiency, significantly altered gut microbiota including a significant expansion of Akkermansia muciniphila. Conclusions: MPO specifically promotes NASH-induced liver fibrosis. Pharmacological MPO inhibition attenuates NASH progression and NASH-induced liver fibrosis in mice and is associated with beneficial changes of intestinal microbiota.
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Affiliation(s)
- Anja Christina Koop
- 1st Department of Medicine University Medical Center Hamburg-Eppendorf Hamburg Germany
| | - Nina Doreen Thiele
- 1st Department of Medicine University Medical Center Hamburg-Eppendorf Hamburg Germany
| | - David Steins
- 1st Department of Medicine University Medical Center Hamburg-Eppendorf Hamburg Germany
| | - Erik Michaëlsson
- Bioscience Cardiovascular, Research and Early Development Cardiovascular, Renal and Metabolism BioPharmaceuticals R&D AstraZeneca Gothenburg Sweden
| | - Malte Wehmeyer
- 1st Department of Medicine University Medical Center Hamburg-Eppendorf Hamburg Germany
| | - Ludger Scheja
- Department of Biochemistry and Molecular Cell Biology University Medical Center Hamburg-Eppendorf Hamburg Germany
| | - Babett Steglich
- 1st Department of Medicine University Medical Center Hamburg-Eppendorf Hamburg Germany.,Department of General, Internal and Thoracic Surgery University Medical Center Hamburg-Eppendorf Hamburg Germany
| | - Samuel Huber
- 1st Department of Medicine University Medical Center Hamburg-Eppendorf Hamburg Germany
| | | | - Ansgar W Lohse
- 1st Department of Medicine University Medical Center Hamburg-Eppendorf Hamburg Germany
| | - Jörg Heeren
- Department of Biochemistry and Molecular Cell Biology University Medical Center Hamburg-Eppendorf Hamburg Germany
| | - Johannes Kluwe
- 1st Department of Medicine University Medical Center Hamburg-Eppendorf Hamburg Germany
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69
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Kaji DA, Howell KL, Balic Z, Hubmacher D, Huang AH. Tgfβ signaling is required for tenocyte recruitment and functional neonatal tendon regeneration. eLife 2020; 9:51779. [PMID: 32501213 PMCID: PMC7324157 DOI: 10.7554/elife.51779] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 06/04/2020] [Indexed: 12/14/2022] Open
Abstract
Tendon injuries are common with poor healing potential. The paucity of therapies for tendon injuries is due to our limited understanding of the cells and molecular pathways that drive tendon regeneration. Using a mouse model of neonatal tendon regeneration, we identified TGFβ signaling as a major molecular pathway that drives neonatal tendon regeneration. Through targeted gene deletion, small molecule inhibition, and lineage tracing, we elucidated TGFβ-dependent and TGFβ-independent mechanisms underlying tendon regeneration. Importantly, functional recovery depended on canonical TGFβ signaling and loss of function is due to impaired tenogenic cell recruitment from both Scleraxis-lineage and non-Scleraxis-lineage sources. We show that TGFβ signaling is directly required in neonatal tenocytes for recruitment and that TGFβ ligand is positively regulated in tendons. Collectively, these results show a functional role for canonical TGFβ signaling in tendon regeneration and offer new insights toward the divergent cellular activities that distinguish regenerative vs fibrotic healing.
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Affiliation(s)
- Deepak A Kaji
- Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Kristen L Howell
- Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Zerina Balic
- Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Dirk Hubmacher
- Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, United States
| | - Alice H Huang
- Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, United States
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Jiang DX, Zhang JB, Li MT, Lin SZ, Wang YQ, Chen YW, Fan JG. Prolyl endopeptidase gene disruption attenuates high fat diet-induced nonalcoholic fatty liver disease in mice by improving hepatic steatosis and inflammation. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:218. [PMID: 32309365 PMCID: PMC7154388 DOI: 10.21037/atm.2020.01.14] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background Prolyl endopeptidase (PREP) is a serine endopeptidase that regulates inflammatory responses. PREP inhibitors can reduce hepatocyte lipid accumulation and may participate in the progression of nonalcoholic fatty liver disease (NAFLD). We investigated whether disruption of PREP regulates hepatic steatosis and inflammation in mice with NAFLD. Methods Wild-type and PREP gene disrupted mice were randomly divided into low-fat diet wild-type (LFD-WT), high-fat diet wild-type (HFD-WT), low-fat diet PREP disruption (LFD-PREPgt), and high-fat diet PREP disruption (HFD-PREPgt) groups. Animals were euthanized at the endpoint of 32 weeks. The NAFLD activity score and number of inflammatory cells were determined by hematoxylin-eosin staining and immunohistochemical staining of liver tissue. The expression levels of inflammation- and lipid metabolism-associated genes in the liver and serum were detected by quantitative reverse transcription PCR, mass spectrometry, or enzyme-linked immunosorbent assay. Results The body weight and epididymal fat tissue index of the HFD-PREPgt mice were significantly decreased compared with that of the HFD-WT mice. Moreover, the NAFLD activity score and liver function were attenuated in the HFD-PREPgt mice. Fat accumulation and the level of expression of mRNAs associated with lipid metabolism and proinflammatory responses were improved in the HFD-PREPgt mice. The number of CD68-positive cells in liver tissue and the serum levels of inflammation-associated factors were significantly decreased in the HFD-PREPgt mice compared with those in the HFD-WT mice. Further mechanistic investigations indicated that the protective effect of PREP disruption on liver inflammation was associated with the suppressed production of matrix metalloproteinases (MMPs) and proline-glycine-proline (PGP) and the inhibition of neutrophil infiltration. Conclusions Loss of PREP lowers the severity of hepatic steatosis and inflammatory responses in a high-fat diet-induced nonalcoholic steatohepatitis model. PREP inhibition may protect against NAFLD.
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Affiliation(s)
- Dai-Xi Jiang
- Department of Gastroenterology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Jian-Bin Zhang
- Department of Gastroenterology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Meng-Ting Li
- Department of Gastroenterology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Shuang-Zhe Lin
- Department of Gastroenterology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Yu-Qin Wang
- Department of Gastroenterology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Yuan-Wen Chen
- Department of Gastroenterology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Jian-Gao Fan
- Department of Gastroenterology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
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71
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Feng D. The alteration of immune cells in the pathogenesis of non-alcoholic fatty liver disease and non-alcoholic steatohepatitis. LIVER RESEARCH 2020. [DOI: 10.1016/j.livres.2020.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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72
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Neutrophils, monocytes and other immune components in the equine endometrium: Friends or foes? Theriogenology 2020; 150:150-157. [PMID: 31973963 DOI: 10.1016/j.theriogenology.2020.01.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 01/11/2020] [Indexed: 02/06/2023]
Abstract
The innate and adaptive immune mechanisms are key components of regulation of reproductive physiological function and uterine disorders in equine uterus. The predominant immunological response in equine endometrium, characterized by an innate immune response, occurs under estrogens influence, in the follicular phase. Although, the increase in immune-related genes in equine endometrium during estrus has been suggested to play a role in uterine clearance after mating, immune cells and their product, i.e. cytokines play also mandatory role in the luteal development and maintenance, regression of equine corpus luteum, as well as in early pregnancy. Innate immune response is nonspecific and acts as the first line of defense against pathogens, foreign stimuli that include constituents of seminal fluid and local infections (endometritis). It has been recently established that a phagocytosis-independent mechanism to restrain bacteria, by means of neutrophil extracellular traps (NETs) formation, is involved in pathogenesis of in mare endometrial fibrosis (endometrosis). Moreover, persistent macrophages and mast cell activation could also have pro-fibrotic roles by secreting great amounts of pro-fibrotic factors and lead to fibrosis. This review will highlight the involvement of immune key components of the innate and adaptive immune system and their products in equine uterus and their contribution to reproductive physiological function and uterine disorders.
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73
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Luci C, Bourinet M, Leclère PS, Anty R, Gual P. Chronic Inflammation in Non-Alcoholic Steatohepatitis: Molecular Mechanisms and Therapeutic Strategies. Front Endocrinol (Lausanne) 2020; 11:597648. [PMID: 33384662 PMCID: PMC7771356 DOI: 10.3389/fendo.2020.597648] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/03/2020] [Indexed: 12/11/2022] Open
Abstract
Non-Alcoholic Steatohepatitis (NASH) is the progressive form of Non-Alcoholic Fatty Liver Disease (NAFLD), the main cause of chronic liver complications. The development of NASH is the consequence of aberrant activation of hepatic conventional immune, parenchymal, and endothelial cells in response to inflammatory mediators from the liver, adipose tissue, and gut. Hepatocytes, Kupffer cells and liver sinusoidal endothelial cells contribute to the significant accumulation of bone-marrow derived-macrophages and neutrophils in the liver, a hallmark of NASH. The aberrant activation of these immune cells elicits harmful inflammation and liver injury, leading to NASH progression. In this review, we highlight the processes triggering the recruitment and/or activation of hepatic innate immune cells, with a focus on macrophages, neutrophils, and innate lymphoid cells as well as the contribution of hepatocytes and endothelial cells in driving liver inflammation/fibrosis. On-going studies and preliminary results from global and specific therapeutic strategies to manage this NASH-related inflammation will also be discussed.
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Affiliation(s)
- Carmelo Luci
- Université Côte d’Azur, INSERM, C3M, Nice, France
| | | | | | - Rodolphe Anty
- Université Côte d’Azur, CHU, INSERM, C3M, Nice, France
| | - Philippe Gual
- Université Côte d’Azur, INSERM, C3M, Nice, France
- *Correspondence: Philippe Gual,
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Alpha-syntrophin deficiency protects against non-alcoholic steatohepatitis associated increase of macrophages, CD8 + T-cells and galectin-3 in the liver. Exp Mol Pathol 2019; 113:104363. [PMID: 31881201 DOI: 10.1016/j.yexmp.2019.104363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/18/2019] [Accepted: 12/24/2019] [Indexed: 11/22/2022]
Abstract
Non-alcoholic steatohepatitis (NASH) is characterized by immune cell infiltration. Loss of the scaffold protein alpha-syntrophin (SNTA) protected mice from hepatic inflammation in the methionine-choline-deficient (MCD) diet model. Here, we determined increased numbers of macrophages and CD8+ T-cells in MCD diet induced NASH liver of wild type mice. In the mutant animals these NASH associated changes in immune cell composition were less pronounced. Further, there were more γδ T-cells in the NASH liver of the null mice. Galectin-3 protein in the hepatic non-parenchymal cell fraction was strongly induced in MCD diet fed wild type but not mutant mice. Antioxidant enzymes declined in NASH liver with no differences between the genotypes. To identify the target cells responsive to SNTA loss in-vitro experiments were performed. In the human hepatic stellate cell line LX-2, SNTA did not regulate pro-fibrotic or antioxidant proteins like alpha-smooth muscle actin or catalase. Soluble galectin-3 was, however, reduced upon SNTA knock-down and increased upon SNTA overexpression. SNTA deficiency neither affected cell proliferation nor cell death of LX-2 cells. In the macrophage cell line RAW264.7 low SNTA indeed caused higher galectin-3 production whereas release of TNF and cell viability were normal. Moreover, SNTA had no effect on hepatocyte chemerin and CCL2 expression. Overall, SNTA loss improved NASH without causing major effects in macrophage, hepatocyte and hepatic stellate cell lines. SNTA null mice fed the MCD diet had less body weight loss and this seems to contribute to improved liver health of the mutant mice.
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Khomich O, Ivanov AV, Bartosch B. Metabolic Hallmarks of Hepatic Stellate Cells in Liver Fibrosis. Cells 2019; 9:E24. [PMID: 31861818 PMCID: PMC7016711 DOI: 10.3390/cells9010024] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/09/2019] [Accepted: 12/18/2019] [Indexed: 12/17/2022] Open
Abstract
Liver fibrosis is a regenerative process that occurs after injury. It is characterized by the deposition of connective tissue by specialized fibroblasts and concomitant proliferative responses. Chronic damage that stimulates fibrogenic processes in the long-term may result in the deposition of excess matrix tissue and impairment of liver functions. End-stage fibrosis is referred to as cirrhosis and predisposes strongly to the loss of liver functions (decompensation) and hepatocellular carcinoma. Liver fibrosis is a pathology common to a number of different chronic liver diseases, including alcoholic liver disease, non-alcoholic fatty liver disease, and viral hepatitis. The predominant cell type responsible for fibrogenesis is hepatic stellate cells (HSCs). In response to inflammatory stimuli or hepatocyte death, HSCs undergo trans-differentiation to myofibroblast-like cells. Recent evidence shows that metabolic alterations in HSCs are important for the trans-differentiation process and thus offer new possibilities for therapeutic interventions. The aim of this review is to summarize current knowledge of the metabolic changes that occur during HSC activation with a particular focus on the retinol and lipid metabolism, the central carbon metabolism, and associated redox or stress-related signaling pathways.
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Affiliation(s)
- Olga Khomich
- INSERM, U1052, Cancer Research Center of Lyon (CRCL), Université de Lyon (UCBL1), CNRS UMR_5286, Centre Léon Bérard, CEDEX 03, 69424 Lyon, France;
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Alexander V. Ivanov
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Birke Bartosch
- INSERM, U1052, Cancer Research Center of Lyon (CRCL), Université de Lyon (UCBL1), CNRS UMR_5286, Centre Léon Bérard, CEDEX 03, 69424 Lyon, France;
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76
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Piek A, Koonen DPY, Schouten EM, Lindtstedt EL, Michaëlsson E, de Boer RA, Silljé HHW. Pharmacological myeloperoxidase (MPO) inhibition in an obese/hypertensive mouse model attenuates obesity and liver damage, but not cardiac remodeling. Sci Rep 2019; 9:18765. [PMID: 31822739 PMCID: PMC6904581 DOI: 10.1038/s41598-019-55263-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 11/25/2019] [Indexed: 02/06/2023] Open
Abstract
Lifestyle factors are important drivers of chronic diseases, including cardiovascular syndromes, with low grade inflammation as a central player. Attenuating myeloperoxidase (MPO) activity, an inflammatory enzyme associated with obesity, hypertension and heart failure, could have protective effects on multiple organs. Herein, the effects of the novel oral available MPO inhibitor AZM198 were studied in an obese/hypertensive mouse model which displays a cardiac phenotype. Eight week old male C57BL6/J mice received 16 weeks of high fat diet (HFD) combined with angiotensin II (AngII) infusion during the last 4 weeks, with low fat diet and saline infusion as control. Treated animals showed therapeutic AZM198 levels (2.1 µM), corresponding to 95% MPO inhibition. AZM198 reduced elevated circulating MPO levels in HFD/AngII mice to normal values. Independent of food intake, bodyweight increase and fat accumulation were attenuated by AZM198, alongside with reduced visceral adipose tissue (VAT) inflammation and attenuated severity of nonalcoholic steatohepatitis. The HFD/AngII perturbation caused impaired cardiac relaxation and contraction, and increased cardiac hypertrophy and fibrosis. AZM198 treatment did, however, not improve these cardiac parameters. Thus, AZM198 had positive effects on the main lipid controlling tissues in the body, namely adipose tissue and liver. This did, however, not directly result in improved cardiac function.
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Affiliation(s)
- Arnold Piek
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Debby P Y Koonen
- Department of Pediatrics, Section Molecular Genetics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Elisabeth-Maria Schouten
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Eva L Lindtstedt
- Early Cardiovascular, Renal and Metabolism, R&D BioPharmaceuticals, AstraZeneca, Gothenburg, Sweden
| | - Erik Michaëlsson
- Early Cardiovascular, Renal and Metabolism, R&D BioPharmaceuticals, AstraZeneca, Gothenburg, Sweden
| | - Rudolf A de Boer
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Herman H W Silljé
- Department of Cardiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
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77
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Carvajal S, Perramón M, Casals G, Oró D, Ribera J, Morales-Ruiz M, Casals E, Casado P, Melgar-Lesmes P, Fernández-Varo G, Cutillas P, Puntes V, Jiménez W. Cerium Oxide Nanoparticles Protect against Oxidant Injury and Interfere with Oxidative Mediated Kinase Signaling in Human-Derived Hepatocytes. Int J Mol Sci 2019; 20:ijms20235959. [PMID: 31783479 PMCID: PMC6928882 DOI: 10.3390/ijms20235959] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/18/2019] [Accepted: 11/20/2019] [Indexed: 12/15/2022] Open
Abstract
Cerium oxide nanoparticles (CeO2NPs) possess powerful antioxidant properties, thus emerging as a potential therapeutic tool in non-alcoholic fatty liver disease (NAFLD) progression, which is characterized by a high presence of reactive oxygen species (ROS). The aim of this study was to elucidate whether CeO2NPs can prevent or attenuate oxidant injury in the hepatic human cell line HepG2 and to investigate the mechanisms involved in this phenomenon. The effect of CeO2NPs on cell viability and ROS scavenging was determined, the differential expression of pro-inflammatory and oxidative stress-related genes was analyzed, and a proteomic analysis was performed to assess the impact of CeO2NPs on cell phosphorylation in human hepatic cells under oxidative stress conditions. CeO2NPs did not modify HepG2 cell viability in basal conditions but reduced H2O2- and lipopolysaccharide (LPS)-induced cell death and prevented H2O2-induced overexpression of MPO, PTGS1 and iNOS. Phosphoproteomic analysis showed that CeO2NPs reverted the H2O2-mediated increase in the phosphorylation of peptides related to cellular proliferation, stress response, and gene transcription regulation, and interfered with H2O2 effects on mTOR, MAPK/ERK, CK2A1 and PKACA signaling pathways. In conclusion, CeO2NPs protect HepG2 cells from cell-induced oxidative damage, reducing ROS generation and inflammatory gene expression as well as regulation of kinase-driven cell survival pathways.
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Affiliation(s)
- Silvia Carvajal
- Biochemistry and Molecular Genetics Service, Hospital Clínic Universitari, IDIBAPS, CIBERehd, 08036 Barcelona, Spain; (S.C.); (M.P.); (D.O.); (J.R.); (M.M.-R.); (P.M.-L.); (G.F.-V.); (W.J.)
| | - Meritxell Perramón
- Biochemistry and Molecular Genetics Service, Hospital Clínic Universitari, IDIBAPS, CIBERehd, 08036 Barcelona, Spain; (S.C.); (M.P.); (D.O.); (J.R.); (M.M.-R.); (P.M.-L.); (G.F.-V.); (W.J.)
| | - Gregori Casals
- Biochemistry and Molecular Genetics Service, Hospital Clínic Universitari, IDIBAPS, CIBERehd, 08036 Barcelona, Spain; (S.C.); (M.P.); (D.O.); (J.R.); (M.M.-R.); (P.M.-L.); (G.F.-V.); (W.J.)
- Correspondence: ; Tel.: +34-932275400-2667
| | - Denise Oró
- Biochemistry and Molecular Genetics Service, Hospital Clínic Universitari, IDIBAPS, CIBERehd, 08036 Barcelona, Spain; (S.C.); (M.P.); (D.O.); (J.R.); (M.M.-R.); (P.M.-L.); (G.F.-V.); (W.J.)
| | - Jordi Ribera
- Biochemistry and Molecular Genetics Service, Hospital Clínic Universitari, IDIBAPS, CIBERehd, 08036 Barcelona, Spain; (S.C.); (M.P.); (D.O.); (J.R.); (M.M.-R.); (P.M.-L.); (G.F.-V.); (W.J.)
| | - Manuel Morales-Ruiz
- Biochemistry and Molecular Genetics Service, Hospital Clínic Universitari, IDIBAPS, CIBERehd, 08036 Barcelona, Spain; (S.C.); (M.P.); (D.O.); (J.R.); (M.M.-R.); (P.M.-L.); (G.F.-V.); (W.J.)
- Department of Biomedicine, University of Barcelona, 08036 Barcelona, Spain
| | - Eudald Casals
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China;
| | - Pedro Casado
- Cell Signalling and Proteomics Group, Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London EC1M 6BQ, UK; (P.C.); (P.C.)
| | - Pedro Melgar-Lesmes
- Biochemistry and Molecular Genetics Service, Hospital Clínic Universitari, IDIBAPS, CIBERehd, 08036 Barcelona, Spain; (S.C.); (M.P.); (D.O.); (J.R.); (M.M.-R.); (P.M.-L.); (G.F.-V.); (W.J.)
- Department of Biomedicine, University of Barcelona, 08036 Barcelona, Spain
| | - Guillermo Fernández-Varo
- Biochemistry and Molecular Genetics Service, Hospital Clínic Universitari, IDIBAPS, CIBERehd, 08036 Barcelona, Spain; (S.C.); (M.P.); (D.O.); (J.R.); (M.M.-R.); (P.M.-L.); (G.F.-V.); (W.J.)
- Department of Biomedicine, University of Barcelona, 08036 Barcelona, Spain
| | - Pedro Cutillas
- Cell Signalling and Proteomics Group, Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London EC1M 6BQ, UK; (P.C.); (P.C.)
| | - Victor Puntes
- Institut Català de Recerca i Estudis Avançats, (ICREA), 08010 Barcelona, Spain;
- Vall d’Hebron Insitute of Research (VHIR), 08035 Barcelona, Spain
- Institut Català de Nanociència i Nanotecnologia (ICN2), 08193 Bellaterra, Spain
| | - Wladimiro Jiménez
- Biochemistry and Molecular Genetics Service, Hospital Clínic Universitari, IDIBAPS, CIBERehd, 08036 Barcelona, Spain; (S.C.); (M.P.); (D.O.); (J.R.); (M.M.-R.); (P.M.-L.); (G.F.-V.); (W.J.)
- Department of Biomedicine, University of Barcelona, 08036 Barcelona, Spain
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78
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Chuang HM, Chen YS, Harn HJ. The Versatile Role of Matrix Metalloproteinase for the Diverse Results of Fibrosis Treatment. Molecules 2019; 24:molecules24224188. [PMID: 31752262 PMCID: PMC6891433 DOI: 10.3390/molecules24224188] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/14/2019] [Accepted: 11/15/2019] [Indexed: 12/11/2022] Open
Abstract
Fibrosis is a type of chronic organ failure, resulting in the excessive secretion of extracellular matrix (ECM). ECM protects wound tissue from infection and additional injury, and is gradually degraded during wound healing. For some unknown reasons, myofibroblasts (the cells that secrete ECM) do not undergo apoptosis; this is associated with the continuous secretion of ECM and reduced ECM degradation even during de novo tissue formation. Thus, matrix metalloproteinases (MMPs) are considered to be a potential target of fibrosis treatment because they are the main groups of ECM-degrading enzymes. However, MMPs participate not only in ECM degradation but also in the development of various biological processes that show the potential to treat diseases such as stroke, cardiovascular diseases, and arthritis. Therefore, treatment involving the targeting of MMPs might impede typical functions. Here, we evaluated the links between these MMP functions and possible detrimental effects of fibrosis treatment, and also considered possible approaches for further applications.
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Affiliation(s)
- Hong-Meng Chuang
- Buddhist Tzu Chi Bioinnovation Center, Tzu Chi Foundation, Hualien 970, Taiwan; (H.-M.C.); (Y.-S.C.)
- Department of Medical Research, Hualien Tzu Chi Hospital, Hualien 970, Taiwan
| | - Yu-Shuan Chen
- Buddhist Tzu Chi Bioinnovation Center, Tzu Chi Foundation, Hualien 970, Taiwan; (H.-M.C.); (Y.-S.C.)
- Department of Medical Research, Hualien Tzu Chi Hospital, Hualien 970, Taiwan
| | - Horng-Jyh Harn
- Buddhist Tzu Chi Bioinnovation Center, Tzu Chi Foundation, Hualien 970, Taiwan; (H.-M.C.); (Y.-S.C.)
- Department of Pathology, Hualien Tzu Chi Hospital & Tzu Chi University, Hualien 970, Taiwan
- Correspondence: ; Tel.: +03-8561825 (ext. 15615)
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79
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Wang C, Pulli B, Jalali Motlagh N, Li A, Wojtkiewicz GR, Schmidt SP, Wu Y, Zeller MW, Chen JW. A versatile imaging platform with fluorescence and CT imaging capabilities that detects myeloperoxidase activity and inflammation at different scales. Am J Cancer Res 2019; 9:7525-7536. [PMID: 31695784 PMCID: PMC6831463 DOI: 10.7150/thno.36264] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 08/29/2019] [Indexed: 12/23/2022] Open
Abstract
Aberrant innate immune response drives the pathophysiology of many diseases. Myeloperoxidase (MPO) is a highly oxidative enzyme secreted by activated myeloid pro-inflammatory immune cells such as neutrophils and macrophages, and is a key mediator of the damaging innate immune response. Current technologies for detecting MPO activity in living organisms are sparse and suffer from any combination of low specificity, low tissue penetration, or low spatial resolution. We describe a versatile imaging platform to detect MPO activity using an activatable construct conjugated to a biotin moiety (MPO-activatable biotinylated sensor, MABS) that allows monitoring the innate immune response and its modulation at different scales and settings. Methods:We designed and synthesized MABS that contains MPO-specific and biotin moieties, and validated its specificity and sensitivity combining with streptavidin-labeled fluorescent agent and gold nanoparticles imaging in vitro and in vivo in multiple mouse models of inflammation and infection, including Matrigel implant, dermatitis, cellulitis, cerebritis and complete Fraud's adjuvant (CFA)-induced inflammation. Results: MABS MPO imaging non-invasively detected varying MPO concentrations, MPO inhibition, and MPO deficiency in vivo with high sensitivity and specificity. MABS can be used to obtain not only a fluorescence imaging agent, but also a CT imaging agent, conferring molecular activity information to a structural imaging modality. Importantly, using this method on tissue-sections, we found that MPO enzymatic activity does not always co-localize with MPO protein detected with conventional techniques (e.g., immunohistochemistry), underscoring the importance of monitoring enzymatic activity. Conclusion:By choosing from different available secondary probes, MABS can be used to create systems suitable to investigate and image MPO activity at different scales and settings.
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80
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Cai J, Zhang XJ, Li H. The Role of Innate Immune Cells in Nonalcoholic Steatohepatitis. Hepatology 2019; 70:1026-1037. [PMID: 30653691 DOI: 10.1002/hep.30506] [Citation(s) in RCA: 135] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 01/05/2019] [Indexed: 02/06/2023]
Abstract
Inflammation and metabolic dysfunction are hallmarks of nonalcoholic steatohepatitis (NASH), which is one of the fastest-growing liver diseases worldwide. Emerging evidence indicates that innate immune mechanisms are pivotal drivers of inflammation and other pathological manifestations observed in NASH, such as hepatosteatosis, insulin resistance (IR), and fibrosis. This robust innate immune reaction is intrinsic to the liver, which is an important immunological organ that contains a coordinated network of innate immune cells, including Kupffer cells (KCs), dendritic cells (DCs), and lymphocytes. Hepatocytes and liver sinusoidal endothelial cells (LSECs) are not formally innate immune cells, but they take on immune cell function when stressed. These cells can sense excess metabolites and bacterial products and translate those signals into immune responses and pathological hepatic changes during the development of NASH. In this review, we take a historical perspective in describing decades of research that aimed to identify the key molecular and cellular players in the innate immune system in the setting of NASH. Furthermore, we summarize the innate immune cells that are involved in the progression of NASH and illustrate how they sense disturbances in circulating metabolic factors by innate immune receptors and subsequently initiate the intercellular signaling cascades that lead to persistent inflammation and progression of hepatic complications.
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Affiliation(s)
- Jingjing Cai
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Department of Cardiology, The Third Xiangya Hospital, Central South University, Changsha, China.,Institute of Model Animal of Wuhan University, Wuhan, China
| | - Xiao-Jing Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Institute of Model Animal of Wuhan University, Wuhan, China
| | - Hongliang Li
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Institute of Model Animal of Wuhan University, Wuhan, China.,Basic Medical School, Wuhan University, Wuhan, China
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81
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Liang Y, Pan Q, Wang R, Ye Z, Li Z, Zeng L, Chen Y, Ma X, Li M, Miao H. Microvesicles Derived from TGF-β1 Stimulated Hepatic Stellate Cells Aggravate Hepatocellular Injury. Stem Cells Dev 2019; 28:1128-1139. [PMID: 31140359 DOI: 10.1089/scd.2019.0032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Hepatic stellate cells (HSCs) are liver-specific cells playing critical roles in liver physiological and pathophysiological processes. Transforming growth factor-β1 (TGF-β1) is an inflammatory cytokine secreted by both hepatocytes and HSCs. We have previously shown that microvesicles (MVs) derived from quiescent HSCs protect hepatocyte functions. In this study, we investigated the effects of MVs released from TGF-β1-stimulated HSCs (HSC-MVs) on xenobiotic-injured hepatocytes. Two hepatocyte cell lines (BRL-3A and HL-7702) were treated with N-acetyl-p-aminophenol or H2O2 to build the injury models. Different concentrations of HSC-MVs were used to coculture with injured hepatocytes. MTT, Hochest33258 staining, and flow cytometry were used to determine their effects on the viability and apoptosis of hepatocytes. Liver injury indicators, alanine aminotransferase (ALT) and aspartate amino transferase (AST), were assessed by enzyme-linked immune sorbent assay kits. The phosphoinositide 3-kinase (PI3K) activator (740Y-P) and extracelluar signal regulated kinase (Erk)1/2 activator (platelet-derived growth factor-BB) were used for pathway analysis. The expression levels of p-PI3K/PI3K, p-Akt/Akt, and activated caspase-3 were measured by western blot. Results showed that (i) HSC-MVs dose dependently impaired the viability of hepatocytes in both injury models, (ii) moreover, HSC-MVs dose dependently increased the apoptosis in those cell models, (iii) HSC-MVs also elevated the levels of ALT and AST in the coculture media, and (iv) these effects were accompanied by a decrease in p-PI3K/PI3K and p-Akt/Akt, which could be partially abolished by 740Y-P. Meanwhile, the proapoptotic effect of HSC-MVs was associated with p-Erk1/2/Erk1/2 downregulation and activated caspase-3 upregulation, and could be inhibited by Erk1/2 activation. Our findings demonstrate that HSC-MVs are involved in inflammatory hepatocytes injury probably through the PI3K/Akt, Erk1/2, and caspase-3 pathways.
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Affiliation(s)
- Yaolong Liang
- 1Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Qunwen Pan
- 2Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Rongfeng Wang
- 1Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Zhirong Ye
- 1Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Zitao Li
- 1Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Lingdiao Zeng
- 1Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Yanfang Chen
- 2Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Xiaotang Ma
- 2Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Institute of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Mingyi Li
- 1Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Huilai Miao
- 1Department of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
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82
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Rebordão MR, Amaral A, Lukasik K, Szóstek-Mioduchowska A, Pinto-Bravo P, Galvão A, Skarzynski DJ, Ferreira-Dias G. Impairment of the antifibrotic prostaglandin E 2 pathway may influence neutrophil extracellular traps-induced fibrosis in the mare endometrium. Domest Anim Endocrinol 2019; 67:1-10. [PMID: 30522057 DOI: 10.1016/j.domaniend.2018.10.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 10/13/2018] [Accepted: 10/26/2018] [Indexed: 12/22/2022]
Abstract
Prostaglandin E2 (PGE2) has contradictory effects in many organs. It may have proinflammatory, anti-inflammatory, or anti-fibrotic roles, depending on the type of receptors to which it binds. By signaling through its receptors EP2 and EP4, PGE2 mediates anti-inflammatory and anti-fibrotic actions. In spite of chronic endometrial fibrosis (endometrosis) being a major cause of mare infertility, its pathogenesis is not fully understood. We have shown that contact of mare endometrium in vitro with neutrophil extracellular traps (NETs) proteases favors endometrial collagen type I production. Therefore, we investigated the involvement of the PGE2 pathway in collagen deposition in mare endometrium, challenged in vitro with proteases present in NETs. Mare endometria (Kenney and Doig categories I/IIA and IIB/III), obtained in the follicular phase (FLP) and mid-luteal phase (MLP), were incubated for 24 h with components found in NETs (elastase, cathepsin-G, and myeloperoxidase). Secretion of PGE2 and transcripts for specific PGE synthase (PGES) and PGE2 receptors (EP2 and EP4) were evaluated. Impaired PGE2 production and low EP2 transcript abundance depended on the endometrial category and estrous cycle phase. Impairment of PGE2 and/or EP2 might play a role in FLP (category IIB/III) and MLP (I/IIA) endometrial fibrogenesis because of the reduction in its antifibrotic capacity. In conclusion, priming of the endometrium with endogenous ovarian steroids might inhibit the antifibrotic PGE2 pathway either in healthy or pathologic tissues with collagen formation after NETs proteases action.
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Affiliation(s)
- Maria Rosa Rebordão
- Department of Morphology and Function, CIISA- Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal; Department of Animal Sciences, Coimbra College of Agriculture, Polytechnic Institute of Coimbra, Coimbra, Portugal
| | - Ana Amaral
- Department of Morphology and Function, CIISA- Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | - Karolina Lukasik
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of PAS, Olsztyn, Poland
| | - Anna Szóstek-Mioduchowska
- Department of Morphology and Function, CIISA- Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | - Pedro Pinto-Bravo
- Department of Animal Sciences, Coimbra College of Agriculture, Polytechnic Institute of Coimbra, Coimbra, Portugal
| | - António Galvão
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of PAS, Olsztyn, Poland
| | - Dariusz J Skarzynski
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of PAS, Olsztyn, Poland.
| | - Graça Ferreira-Dias
- Department of Morphology and Function, CIISA- Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
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83
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Kim S, Moore J, Alonso E, Bednarek J, Bezerra JA, Goodhue C, Karpen SJ, Loomes KM, Magee JC, Ng VL, Sherker AH, Smith C, Spino C, Venkat V, Wang K, Sokol RJ, Mack CL. Correlation of Immune Markers With Outcomes in Biliary Atresia Following Intravenous Immunoglobulin Therapy. Hepatol Commun 2019; 3:685-696. [PMID: 31061956 PMCID: PMC6492477 DOI: 10.1002/hep4.1332] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 02/11/2019] [Indexed: 12/13/2022] Open
Abstract
Biliary atresia is a progressive fibroinflammatory cholangiopathy of infancy that is associated with activation of innate and adaptive immune responses targeting bile ducts. A recently completed multicenter phase I/IIA trial of intravenous immunoglobulin in biliary atresia did not improve serum total bilirubin levels at 90 days after hepatoportoenterostomy or survival with the native liver at 1 year. A mechanistic aim of this trial was to determine if the peripheral blood immunophenotype was associated with clinical outcomes. Flow cytometry of peripheral blood cell markers (natural killer [NK], macrophage subsets, T‐ and B‐cell subsets, regulatory T cells), neutrophils, and activation markers (clusters of differentiation [CD]38, CD69, CD86, human leukocyte antigen‐DR isotype [HLA‐DR]) was performed on 29 patients with biliary atresia at baseline and at 60, 90, 180, and 360 days after hepatoportoenterostomy. Plasma cytokines and neutrophil products were also measured. Spearman correlations of change of an immune marker from baseline to day 90 with change in serum bilirubin revealed that an increase in total bilirubin correlated with 1) increased percentage of HLA‐DR+CD38+ NK cells and expression of NK cell activation markers CD69 and HLA‐DR, 2) decreased percentage of regulatory T cells, and 3) increased interleukin (IL)‐8 and associated neutrophil products (elastase and neutrophil extracellular traps). Cox modeling revealed that the change from baseline to day 60 of the percentage of HLA‐DR+CD38+ NK cells and plasma IL‐8 levels was associated with an increased risk of transplant or death by day 360. Conclusion: Poor outcomes in biliary atresia correlated with higher peripheral blood NK cells and IL‐8 and lower regulatory T cells. Future studies should include immunotherapies targeting these pathways in order to protect the biliary tree from ongoing damage.
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Affiliation(s)
| | | | - Estella Alonso
- Ann and Robert H. Lurie Children's Hospital of Chicago Chicago IL
| | | | | | | | | | | | | | - Vicky L Ng
- The Hospital for Sick Children, University of Toronto Toronto Canada
| | - Averell H Sherker
- National Institutes of Health, National Institute of Diabetes and Digestive and Kidney Diseases Bethesda MD
| | | | | | | | - Kasper Wang
- Children's Hospital Los Angeles Los Angeles CA
| | - Ronald J Sokol
- Children's Hospital Colorado, University of Colorado School of Medicine Aurora CO
| | - Cara L Mack
- Children's Hospital Colorado, University of Colorado School of Medicine Aurora CO
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84
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Montesi SB, Désogère P, Fuchs BC, Caravan P. Molecular imaging of fibrosis: recent advances and future directions. J Clin Invest 2019; 129:24-33. [PMID: 30601139 DOI: 10.1172/jci122132] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Fibrosis, the progressive accumulation of connective tissue that occurs in response to injury, causes irreparable organ damage and may result in organ failure. The few available antifibrotic treatments modify the rate of fibrosis progression, but there are no available treatments to reverse established fibrosis. Thus, more effective therapies are urgently needed. Molecular imaging is a promising biomedical methodology that enables noninvasive visualization of cellular and subcellular processes. It provides a unique means to monitor and quantify dysregulated molecular fibrotic pathways in a noninvasive manner. Molecular imaging could be used for early detection, disease staging, and prognostication, as well as for assessing disease activity and treatment response. As fibrotic diseases are often molecularly heterogeneous, molecular imaging of a specific pathway could be used for patient stratification and cohort enrichment with the goal of improving clinical trial design and feasibility and increasing the ability to detect a definitive outcome for new therapies. Here we review currently available molecular imaging probes for detecting fibrosis and fibrogenesis, the active formation of new fibrous tissue, and their application to models of fibrosis across organ systems and fibrotic processes. We provide our opinion as to the potential roles of molecular imaging in human fibrotic diseases.
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Affiliation(s)
| | - Pauline Désogère
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.,Athinoula A. Martinos Center for Biomedical Imaging and.,Institute for Innovation in Imaging, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Bryan C Fuchs
- Division of Surgical Oncology, Massachusetts General Hospital Cancer Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Peter Caravan
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.,Athinoula A. Martinos Center for Biomedical Imaging and.,Institute for Innovation in Imaging, Massachusetts General Hospital, Boston, Massachusetts, USA
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85
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Bai RX, Xu YY, Qin G, Chen YM, Wang HF, Wang M, Du SY. Repression of TXNIP-NLRP3 axis restores intestinal barrier function via inhibition of myeloperoxidase activity and oxidative stress in nonalcoholic steatohepatitis. J Cell Physiol 2018; 234:7524-7538. [PMID: 30387131 DOI: 10.1002/jcp.27513] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 09/10/2018] [Indexed: 12/13/2022]
Abstract
Dysfunction of the intestinal barrier function occurs in hepatic injury, but the specific mechanisms responsible are largely unknown. Recently, NOD-like receptor 3 (NLRP3) inflammasome functions in impairing endothelial barrier function. In this study, we test the hypothesis that TXNIP-NLRP3 axis repression prevents against intestinal barrier function disruption in nonalcoholic steatohepatitis (NASH). First, lipopolysaccharide (LPS)-induced alterations in expression of ZO-1 and occludin, myeloperoxidase (MPO) activity, reactive oxygen species (ROS) level, and transepithelial electric resistance (TEER) in intestinal epithelial cells (IECs) isolated from C57BL/6 wild-type (WT) and TXNIP-/- mice were evaluated. The underlying regulatory mechanisms of TXNIP knockout in vivo were investigated with the detection of expressions of TXNIP, NLRP3 and ZO-1, and occludin, the interaction of TXNIP-NLRP3, MPO activity, ROS level, permeability of intestinal mucosa, levels of inflammatory factors in serum, and LPS concentration. We identified that TXNIP knockout promoted ZO-1 and occludin expression, yet reduced MPO activity, ROS level, and cell permeability in IECs, indicating restored the intestinal barrier function. However, LPS upregulated TXNIP and NLRP3 expression, as well as contributed to the interaction between TXNIP and NLRP3 in vitro. Furthermore, TXNIP was significantly upregulated in the intestinal mucosa of NASH mice and its knockout repaired the intestinal barrier disrupt, inhibited expression of inflammatory factors, and reduced LPS concentration as well as hepatic injury in vivo. Taken together, our findings demonstrated that inhibited the activation of the TXNIP-NLRP3 axis reduced MPO activity and oxidative stress and thus restoring the intestinal barrier function in NASH. TXNIP-NLRP3 axis may be a promising therapeutic strategy for the NASH treatment.
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Affiliation(s)
- Ru-Xue Bai
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing, China
| | - Ying-Ying Xu
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing, China
| | - Geng Qin
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing, China
| | - Yan-Ming Chen
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing, China
| | - Hui-Fen Wang
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing, China
| | - Miao Wang
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing, China
| | - Shi-Yu Du
- Department of Gastroenterology, China-Japan Friendship Hospital, Beijing, China
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86
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Kanda T, Matsuoka S, Yamazaki M, Shibata T, Nirei K, Takahashi H, Kaneko T, Fujisawa M, Higuchi T, Nakamura H, Matsumoto N, Yamagami H, Ogawa M, Imazu H, Kuroda K, Moriyama M. Apoptosis and non-alcoholic fatty liver diseases. World J Gastroenterol 2018; 24:2661-2672. [PMID: 29991872 PMCID: PMC6034146 DOI: 10.3748/wjg.v24.i25.2661] [Citation(s) in RCA: 179] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 06/04/2018] [Accepted: 06/21/2018] [Indexed: 02/06/2023] Open
Abstract
The number of patients with nonalcoholic fatty liver diseases (NAFLD) including nonalcoholic steatohepatitis (NASH), has been increasing. NASH causes cirrhosis and hepatocellular carcinoma (HCC) and is one of the most serious health problems in the world. The mechanism through which NASH progresses is still largely unknown. Activation of caspases, Bcl-2 family proteins, and c-Jun N-terminal kinase-induced hepatocyte apoptosis plays a role in the activation of NAFLD/NASH. Apoptotic hepatocytes stimulate immune cells and hepatic stellate cells toward the progression of fibrosis in the liver through the production of inflammasomes and cytokines. Abnormalities in glucose and lipid metabolism as well as microbiota accelerate these processes. The production of reactive oxygen species, oxidative stress, and endoplasmic reticulum stress is also involved. Cell death, including apoptosis, seems very important in the progression of NAFLD and NASH. Recently, inhibitors of apoptosis have been developed as drugs for the treatment of NASH and may prevent cirrhosis and HCC. Increased hepatocyte apoptosis may distinguish NASH from NAFLD, and the improvement of apoptosis could play a role in controlling the development of NASH. In this review, the association between apoptosis and NAFLD/NASH are discussed. This review could provide their knowledge, which plays a role in seeing the patients with NAFLD/NASH in daily clinical practice.
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Affiliation(s)
- Tatsuo Kanda
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Shunichi Matsuoka
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Motomi Yamazaki
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Toshikatsu Shibata
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Kazushige Nirei
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Hiroshi Takahashi
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Tomohiro Kaneko
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Mariko Fujisawa
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Teruhisa Higuchi
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Hitomi Nakamura
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Naoki Matsumoto
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Hiroaki Yamagami
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Masahiro Ogawa
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Hiroo Imazu
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Kazumichi Kuroda
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
| | - Mitsuhiko Moriyama
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Japan
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87
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Pernes G, Lancaster GI, Murphy AJ. Take me to the liver: adipose tissue macrophages coordinate hepatic neutrophil recruitment. Gut 2018; 67:1204-1206. [PMID: 29298875 DOI: 10.1136/gutjnl-2017-315393] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 12/13/2017] [Accepted: 12/14/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Gerard Pernes
- Haematopoiesis and Leukocyte Biology, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Graeme I Lancaster
- Haematopoiesis and Leukocyte Biology, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Andrew J Murphy
- Haematopoiesis and Leukocyte Biology, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
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88
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Wu C, Jing M, Yang L, Jin L, Ding Y, Lu J, Cao Q, Jiang Y. Alisol A 24-acetate ameliorates nonalcoholic steatohepatitis by inhibiting oxidative stress and stimulating autophagy through the AMPK/mTOR pathway. Chem Biol Interact 2018; 291:111-119. [PMID: 29883724 DOI: 10.1016/j.cbi.2018.06.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 05/21/2018] [Accepted: 06/05/2018] [Indexed: 12/12/2022]
Abstract
Alisol A 24-acetate (AA), a natural triterpenoid isolated from the traditional Chinese medicine Rhizoma Alismatis, has various therapeutic effects. We investigated the anti-nonalcoholic steatohepatitis (NASH) effect of AA and its underlying mechanisms in vitro and in vivo. C57BL/6 mice were fed a methionine and choline-deficient (MCD) diet for 4 weeks to induce NASH. The mice were simultaneously treated with a daily dose of AA (15, 30, and 60 mg kg-1, ig) for 4 weeks. On the last day, the animals were sacrificed and plasma and liver tissue were collected. Serum and liver tissue biochemical analyses and histological observation were performed. The human hepatic stellate cell line LX-2 was used to build NASH models by culturing with conditioned medium from WRL-68 liver cells after exposure to MCD medium in vitro. Liver oxidative stress and inflammatory indices and autophagy markers were examined. The results showed that AA suppressed reactive oxygen species (ROS) and inflammation in a NASH mouse model and inhibited the expression of inflammatory cytokines and ROS in LX-2 cells in MCD medium. Furthermore, we found AA stimulated autophagy in mice liver and LX-2, which could be the underlying mechanism of AA in NASH. To further investigate the role of autophagy in LX-2 cells, we found that AA regulated autophagy via the AMPK/mTOR/ULK1 pathway and dorsomorphin, a selective AMPK inhibitor, led to the suppression of AA-induced autophagy. Taken together, our results indicate that AA could be a possible therapy for NASH by inhibiting oxidative stress and stimulating autophagy.
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Affiliation(s)
- Chenqu Wu
- Department of Gastroenterology, Putuo Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 164 Lanxi Road, Shanghai 200062, China
| | - Menghui Jing
- Department of Gastroenterology, Putuo Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 164 Lanxi Road, Shanghai 200062, China
| | - Lijuan Yang
- Department of Gastroenterology, Shanghai General Hospital/First People's Hospital, School of Medicine, Shanghai Jiao Tong University, 100 HaiNing Road, Shanghai 200080, China; Shanghai Key Laboratory of Pancreatic Disease, Institute of Pancreatic Disease, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Lei Jin
- Department of Gastroenterology, Putuo Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 164 Lanxi Road, Shanghai 200062, China
| | - Yicun Ding
- Department of Gastroenterology, Putuo Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 164 Lanxi Road, Shanghai 200062, China
| | - Juan Lu
- Department of Gastroenterology, Putuo Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 164 Lanxi Road, Shanghai 200062, China.
| | - Qin Cao
- Department of Gastroenterology, Putuo Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 164 Lanxi Road, Shanghai 200062, China.
| | - Yuanye Jiang
- Department of Gastroenterology, Putuo Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, 164 Lanxi Road, Shanghai 200062, China.
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89
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Shi WP, Ju D, Li H, Yuan L, Cui J, Luo D, Chen ZN, Bian H. CD147 Promotes CXCL1 Expression and Modulates Liver Fibrogenesis. Int J Mol Sci 2018; 19:ijms19041145. [PMID: 29642635 PMCID: PMC5979418 DOI: 10.3390/ijms19041145] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 03/18/2018] [Accepted: 04/03/2018] [Indexed: 12/30/2022] Open
Abstract
Activated hepatic stellate cells (HSCs) release pro-inflammatory and pro-fibrogenic factors. CXC chemokine-ligand-1 (CXCL1) is expressed on HSCs. We previously found that the CD147 is overexpressed in activated HSCs. In this study, we showed an important role of CD147 in promoting liver fibrosis by activating HSCs and upregulating expression of chemokines. Specifically, we found that CD147 specific deletion in HSCs mice alleviated CCl4-induced liver fibrosis and inhibited HSCs activation. Overexpression of CD147 upregulated the secretion of CXCL1. Meanwhile, CXCL1 promoted HSCs activation through autocrine. Treating with PI3K/AKT inhibitor could effectively suppress CD147-induced CXCL1 expression. Taken together, these findings suggest that CD147 regulates CXCL1 release in HSCs by PI3K/AKT signaling. Inhibition of CD147 attenuates CCl4-induced liver fibrosis and inflammation. Therefore, administration of targeting CD147 could be a promising therapeutic strategy in liver fibrosis.
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Affiliation(s)
- Wen-Pu Shi
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an 710032, China.
| | - Di Ju
- Department of Physiology, Basic Medical College, Shaanxi University of Chinese Medicine, Xianyang 712046, China.
| | - Hao Li
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an 710032, China.
| | - Lin Yuan
- Clinical Laboratory, No. 457 Hospital of PLA, Wuhan 430000, China.
| | - Jian Cui
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an 710032, China.
| | - Dan Luo
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an 710032, China.
| | - Zhi-Nan Chen
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an 710032, China.
| | - Huijie Bian
- Department of Cell Biology, National Translational Science Center for Molecular Medicine, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an 710032, China.
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90
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Rebordão MR, Amaral A, Lukasik K, Szóstek-Mioduchowska A, Pinto-Bravo P, Galvão A, Skarzynski DJ, Ferreira-Dias G. Constituents of neutrophil extracellular traps induce in vitro collagen formation in mare endometrium. Theriogenology 2018; 113:8-18. [PMID: 29452855 DOI: 10.1016/j.theriogenology.2018.02.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 02/01/2018] [Accepted: 02/03/2018] [Indexed: 01/08/2023]
Abstract
Neutrophil extracellular traps (NETs) are DNA complexes carrying nuclear and cytoplasmic proteins, such as elastase (ELA), cathepsin-G (CAT) and myeloperoxidase (MPO). Mare endometrosis is a chronic degenerative process characterized by excessive collagen in endometrium. While NETs fight bacteria that cause endometritis, they may trigger endometrial fibrogenesis. The aim was to evaluate the in vitro effect of some NETs components on mare endometrial fibrogenesis and determine its relationship with histopathology or estrous cycle. Endometrial explants were incubated with NETs components (ELA, CAT, MPO or oxytocin). Collagen type I (COL1) protein and type I and III (COL3) gene transcription were evaluated in follicular and mid-luteal phases endometria (Kenney and Doig type I/IIA and IIB/III). Increased COL1 occurred with all NETs proteins, although endometrial response to each NETs protease depended on estrous cycle and/or endometrial category. Since ELA enhanced COL1 production, NETs persistence might be linked to endometrosis. Estrous cycle influenced COL1 protein concentration and COL3 transcripts, suggesting that follicular phase may favor endometrial collagen production. However, luteal phase endometria with moderate or severe lesions may be also susceptible to fibrotic effects of NETs constituents. These data propose that NETs involvement in chronic endometritis in mares may act as putative endometrial fibrogenic mediators.
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Affiliation(s)
- Maria Rosa Rebordão
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal; Coimbra College of Agriculture, Polytechnic Institute of Coimbra, Coimbra, Portugal
| | - Ana Amaral
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
| | - Karolina Lukasik
- Institute of Animal Reproduction and Food Research of PAS, Olsztyn, Poland
| | | | - Pedro Pinto-Bravo
- Coimbra College of Agriculture, Polytechnic Institute of Coimbra, Coimbra, Portugal
| | - António Galvão
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal; Institute of Animal Reproduction and Food Research of PAS, Olsztyn, Poland
| | | | - Graça Ferreira-Dias
- CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal.
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91
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Genetic Nrf2 Overactivation Inhibits the Deleterious Effects Induced by Hepatocyte-Specific c-met Deletion during the Progression of NASH. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:3420286. [PMID: 28676836 PMCID: PMC5476895 DOI: 10.1155/2017/3420286] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/22/2017] [Indexed: 12/18/2022]
Abstract
We have recently shown that hepatocyte-specific c-met deficiency accelerates the progression of nonalcoholic steatohepatitis in experimental murine models resulting in augmented production of reactive oxygen species and accelerated development of fibrosis. The aim of this study focuses on the elucidation of the underlying cellular mechanisms driven by Nrf2 overactivation in hepatocytes lacking c-met receptor characterized by a severe unbalance between pro-oxidant and antioxidant functions. Control mice (c-metfx/fx), single c-met knockouts (c-metΔhepa), and double c-met/Keap1 knockouts (met/Keap1Δhepa) were then fed a chow or a methionine-choline-deficient (MCD) diet, respectively, for 4 weeks to reproduce the features of nonalcoholic steatohepatitis. Upon MCD feeding, met/Keap1Δhepa mice displayed increased liver mass albeit decreased triglyceride accumulation. The marked increase of oxidative stress observed in c-metΔhepa was restored in the double mutants as assessed by 4-HNE immunostaining and by the expression of genes responsible for the generation of free radicals. Moreover, double knockout mice presented a reduced amount of liver-infiltrating cells and the exacerbation of fibrosis progression observed in c-metΔhepa livers was significantly inhibited in met/Keap1Δhepa. Therefore, genetic activation of the antioxidant transcription factor Nrf2 improves liver damage and repair in hepatocyte-specific c-met-deficient mice mainly through restoring a balance in the cellular redox homeostasis.
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92
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Alshammari GM, Balakrishnan A, Chinnasamy T. 2-Hydroxy-4-methoxy benzoic acid attenuates the carbon tetra chloride-induced hepatotoxicity and its lipid abnormalities in rats via anti-inflammatory and antioxidant mechanism. Inflamm Res 2017; 66:753-763. [PMID: 28560522 DOI: 10.1007/s00011-017-1054-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 05/03/2017] [Accepted: 05/08/2017] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND AND AIM Liver inflammation stimulates various inflammatory cytokines and initiates injury through oxidative stress. The aim of this study was to curtaile the liver injury through natural principles such as 2-hydroxy-4-methoxy benzoic acid (HMBA). METHODS The current study examines the hepatoprotective and lipid lowering effect of HMBA against carbon tetra chloride (CCl4)-mediated liver toxicity in male Wistar rats. RESULTS The hepatoprotective effects of HMBA against CCl4-induced liver damage, were evident from low serum transaminases activities, reduced hepatic lipid peroxidation and collagen content, restoration of total glutathione, and recouping of the inflammatory cytokines, such as TNF-α, IL-1β, IL-10, and IL-6 levels. Further it was found that the treatment of HMBA, significantly lowered (P<0.01) the levels of total cholesterol, triglycerides, free fatty acids and phospholipids in serum and liver. To investigate the mechanism behind the hepatoprotective and lipid lowering effect, the activities of heme oxygenase (HO1), and myeloperoxidase (MPO) were measured and expression levels were quantified through western blot following HMBA administration. The results showed that HMBA administration significantly decreased the activity of HO1 (P<0.001), and increased the activity of MPO (P<0.001); further similar finding was observed in western analysis. The hepatoprotective, lipid lowering and shifting key defensive enzyme activities are similar to that of standard drug such as N-acetylcysteine. CONCLUSION HMBA is competent of shielding liver from CCl4-induced hepatotoxicity, and this is associated with the lipid lowering, inflammatory cytokine restoration and induction of defensive enzyme activities.
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Affiliation(s)
- Ghedeir M Alshammari
- Adipocytes and Metabolic Disorders Lab, Food Science and Nutrition Department, King Saud University, Riyadh, Saudi Arabia.
| | - Aristatile Balakrishnan
- Adipocytes and Metabolic Disorders Lab, Food Science and Nutrition Department, King Saud University, Riyadh, Saudi Arabia
| | - Thirunavukkarasu Chinnasamy
- Adipocytes and Metabolic Disorders Lab, Food Science and Nutrition Department, King Saud University, Riyadh, Saudi Arabia.
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93
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Intervention with a caspase-1 inhibitor reduces obesity-associated hyperinsulinemia, non-alcoholic steatohepatitis and hepatic fibrosis in LDLR-/-.Leiden mice. Int J Obes (Lond) 2016; 40:1416-23. [PMID: 27121255 PMCID: PMC5022108 DOI: 10.1038/ijo.2016.74] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 04/07/2016] [Accepted: 04/08/2016] [Indexed: 12/13/2022]
Abstract
Background/Objectives: Non-alcoholic steatohepatitis (NASH) is a serious liver condition, closely associated with obesity and insulin resistance. Recent studies have suggested an important role for inflammasome/caspase-1 in the development of NASH, but the potential therapeutic value of caspase-1 inhibition remains unclear. Therefore, we aimed to investigate the effects of caspase-1 inhibition in the ongoing disease process, to mimic the clinical setting. Subjects/Methods: To investigate effects of caspase-1 inhibition under therapeutic conditions, male LDLR−/−.Leiden mice were fed a high-fat diet (HFD) for 9 weeks to induce a pre-diabetic state before start of treatment. Mice were then continued on HFD for another 12 weeks, without (HFD) or with (HFD-YVAD) treatment with the caspase-1 inhibitor Ac-YVAD-cmk (40 mg kg−1 per day). Results: Nine weeks of HFD feeding resulted in an obese phenotype, with obesity-associated hypertriglyceridemia, hypercholesterolemia, hyperglycemia and hyperinsulinemia. Treatment with Ac-YVAD-cmk did not affect further body weight gain or dyslipidemia, but did attenuate further progression of insulin resistance. Histopathological analysis of livers clearly demonstrated prevention of NASH development in HFD-YVAD mice: livers were less steatotic and neutrophil infiltration was strongly reduced. In addition, caspase-1 inhibition had a profound effect on hepatic fibrosis, as assessed by histological quantification of collagen staining and gene expression analysis of fibrosis-associated genes Col1a1, Acta2 and Tnfa. Conclusions: Intervention with a caspase-1 inhibitor attenuated the development of NASH, liver fibrosis and insulin resistance. Our data support the importance of inflammasome/caspase-1 in the development of NASH and demonstrate that therapeutic intervention in the already ongoing disease process is feasible.
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94
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Nati M, Haddad D, Birkenfeld AL, Koch CA, Chavakis T, Chatzigeorgiou A. The role of immune cells in metabolism-related liver inflammation and development of non-alcoholic steatohepatitis (NASH). Rev Endocr Metab Disord 2016; 17:29-39. [PMID: 26847547 DOI: 10.1007/s11154-016-9339-2] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The low grade inflammatory state present in obesity promotes the progression of Non-Alcoholic Fatty Liver Disease (NAFLD). In Non-Alcoholic Steatohepatitis (NASH), augmented hepatic steatosis is accompanied by aberrant intrahepatic inflammation and exacerbated hepatocellular injury. NASH is an important disorder and can lead to fibrosis, cirrhosis and even neoplasia. The pathology of NASH involves a complex network of mechanisms, including increased infiltration of different subsets of immune cells, such as monocytes, T-lymphocytes and neutrophils, to the liver, as well as activation and in situ expansion of liver resident cells such as Kupffer cells or stellate cells. In this review, we summarize recent advances regarding understanding the role of the various cells of the innate and adaptive immunity in NASH development and progression, and discuss possible future therapeutic options and tools to interfere with disease progression.
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Affiliation(s)
- Marina Nati
- Department of Clinical Pathobiochemistry, Faculty of Medicine, Technische Universität Dresden, MTZ, Fiedlerstrasse 42, 01307, Dresden, Germany
| | - David Haddad
- Department of Clinical Pathobiochemistry, Faculty of Medicine, Technische Universität Dresden, MTZ, Fiedlerstrasse 42, 01307, Dresden, Germany
| | - Andreas L Birkenfeld
- Section of Metabolic Vascular Medicine, Medical Clinic III, Faculty of Medicine, TU Dresden, Dresden, Germany
- Paul Langerhans Institute Dresden of the Helmholtz Center Munich at University Hospital and Faculty of Medicine, TU Dresden, Dresden, Germany
- German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
- Division of Diabetes and Nutritional Sciences, Rayne Institute, King's College London, London, UK
| | - Christian A Koch
- Division of Endocrinology, Endocrine Tumor Program, Cancer Institute, University of Mississippi Medical Center, Jackson, MS, USA
| | - Triantafyllos Chavakis
- Department of Clinical Pathobiochemistry, Faculty of Medicine, Technische Universität Dresden, MTZ, Fiedlerstrasse 42, 01307, Dresden, Germany
- Paul Langerhans Institute Dresden of the Helmholtz Center Munich at University Hospital and Faculty of Medicine, TU Dresden, Dresden, Germany
- German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, TU Dresden, Dresden, Germany
| | - Antonios Chatzigeorgiou
- Department of Clinical Pathobiochemistry, Faculty of Medicine, Technische Universität Dresden, MTZ, Fiedlerstrasse 42, 01307, Dresden, Germany.
- Paul Langerhans Institute Dresden of the Helmholtz Center Munich at University Hospital and Faculty of Medicine, TU Dresden, Dresden, Germany.
- German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany.
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, TU Dresden, Dresden, Germany.
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95
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Tang Y, Xu Q, Peng H, Liu Z, Yang T, Yu Z, Cheng G, Li X, Zhang G, Shi R. The role of vascular peroxidase 1 in ox-LDL-induced vascular smooth muscle cell calcification. Atherosclerosis 2015; 243:357-63. [DOI: 10.1016/j.atherosclerosis.2015.08.047] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 08/19/2015] [Accepted: 08/31/2015] [Indexed: 12/18/2022]
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