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Das SJ, Pathak B, Dutta S, Bose S, Bose PD. Role of serum endotoxin, FGF19, TLR2, TNF-α, IL-12 and IL-10 in NAFLD-associated T2DM pathogenesis: Insights into Th1 bias and protective mechanisms. Indian J Gastroenterol 2024:10.1007/s12664-024-01597-z. [PMID: 38780878 DOI: 10.1007/s12664-024-01597-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 04/20/2024] [Indexed: 05/25/2024]
Abstract
BACKGROUND Non-alcoholic fatty liver disease (NAFLD) in non-obese patients is pathophysiologically distinct, exhibiting common immunological link with type-2 diabetes mellitus (T2DM). This study aims to delineate the role of Toll-like receptor 2 (TLR2)-mediated immuno-modulation along with its association with fibroblast growth factor receptor 4 (FGFR4) and its ligand fibroblast growth factor 19 (FGF19) in the pathogenesis of NAFLD without or with T2DM. METHODOLOGY Blood samples were collected from patients with NAFLD (n = 90), NAFLD with T2DM (n = 90) and healthy cohorts (n = 90) with consent and clinical records. Real-time polymerase chain reaction (PCR), enzyme-linked immunoassay (ELIZA) and polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) were used to analyze messenger ribonucleic acid (mRNA), protein expression and gene polymorphism. RESULTS The molecular genetic analysis revealed the prevalence of variant allele(A) in FGFR4 gene in both cases compared to controls. The mRNA expression of FGF19 and TLR2 exhibited significant upregulation in NAFLD without T2DM compared to NAFLD with T2DM. Tumor necrosis factor-α (TNF-α) and interleukin-12 (IL-12) showed upregulation in both disease cohorts compared to control while IL-10 showed significant downregulation in NAFLD with T2DM compared to the other two cohorts. Correlation analysis between FGF19 and TLR2 revealed significant positive association in both NAFLD with and without T2DM. The Th1:Th2 ratio showed significant upregulation in NAFLD with T2DM compared to NAFLD without T2DM. CONCLUSION In conclusion, elevated serum endotoxin levels appear to contribute to NAFLD and T2DM development. Upregulated FGF19 seems to be protective against developing T2DM in NAFLD patients. Higher TLR2, TNF-α and IL-12 expression in NAFLD without T2DM suggests a Th1 bias in its pathogenesis, while reduced IL-10 in NAFLD with T2DM implies a more skewed Th1 state in this condition.
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Affiliation(s)
- Snigdha Jyoti Das
- Department of Molecular Biology and Biotechnology, Cotton University, Panbazar, Guwahati, 781 001, India
| | - Barsha Pathak
- Department of Molecular Biology and Biotechnology, Cotton University, Panbazar, Guwahati, 781 001, India
| | - Sangit Dutta
- Department of Medicine, Gauhati Medical College and Hospital, Guwahati, 781 032, India
| | - Sujoy Bose
- Department of Biotechnology, Gauhati University, Jalukbari, Guwahati, 781 014, India
| | - Purabi Deka Bose
- Department of Molecular Biology and Biotechnology, Cotton University, Panbazar, Guwahati, 781 001, India.
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Lekakis V, Papatheodoridis GV. Natural history of metabolic dysfunction-associated steatotic liver disease. Eur J Intern Med 2024; 122:3-10. [PMID: 37940495 DOI: 10.1016/j.ejim.2023.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 10/31/2023] [Accepted: 11/03/2023] [Indexed: 11/10/2023]
Abstract
Metabolic dysfunction-associated steatotic liver disease (MASLD), which has been the term for non-alcoholic fatty liver disease (NAFLD) since June 2023, represents the most common liver disease worldwide and is a leading cause of liver-related morbidity and mortality. A thorough knowledge of the disease's natural history is required to promptly stratify patients' risks, since MASLD is a multifaceted disorder with a broad range of clinical phenotypes. The histological disease spectrum ranges from isolated hepatic steatosis, currently named as metabolic dysfunction-associated steatotic liver (MASL), to metabolic dysfunction-associated steatohepatitis (MASH) and eventually may accumulate hepatic fibrosis and develop cirrhosis and/or hepatocellular carcinoma (HCC). Several risk factors for fibrosis progression have been identified, while the disease's progression displays notable dynamism and bidirectionality. When compared to the general population, all MASLD histological stages are substantially related with greater overall mortality, and this association exhibits a disease severity-dependent pattern. Interestingly, the fibrosis stage is the most accurate predictor of mortality among MASLD patients. The mortality attributed to MASLD predominantly stems from issues linked with the liver and cardiovascular system, as well as HCC and extrahepatic cancers. In light of the disease natural course, it is crucial to prioritize the identification of at-risk patients for disease progression in order to effectively address and change modifiable risk factors, hence mitigating disease complications. Further investigation is required to define the phenotype of rapid progressors more precisely as well as to improve risk stratification for HCC in non-cirrhotic individuals.
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Affiliation(s)
- Vasileios Lekakis
- Department of Gastroenterology, Medical School of National and Kapodistrian University of Athens, General Hospital of Athens "Laiko", 17 Agiou Thoma Street, Athens 11527, Greece
| | - George V Papatheodoridis
- Department of Gastroenterology, Medical School of National and Kapodistrian University of Athens, General Hospital of Athens "Laiko", 17 Agiou Thoma Street, Athens 11527, Greece.
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3
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Fang X, Cao J, Tao Z, Yang Z, Dai Y, Zhao L. Hydroxytyrosol attenuates ethanol-induced liver injury by ameliorating steatosis, oxidative stress and hepatic inflammation by interfering STAT3/iNOS pathway. Redox Rep 2023; 28:2187564. [PMID: 36932927 PMCID: PMC10026757 DOI: 10.1080/13510002.2023.2187564] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
Abstract
Objective: Hydroxytyrosol (HT) is a polyphenol with a wide range of biological activities. Excessive drinking can lead to oxidative stress and inflammation in the liver, which usually develop into alcohol liver disease (ALD). At present, there is no specific drug to treat ALD. In this paper, the protection effect of HT on ALD and the underline mechanism were studied.Methods: HepG2 cells were exposed to ethanol in vitro and C57BL/6J mice were fed with a Lieber-DeCarli ethanol liquid diet in vivo.Results: triglyceride (TG) level in serum and the expression of fatty acid synthase (FASN) were reduced significantly by the treatment with HT The acetaldehyde dehydrogenase (ALDH) activity was increased, the serum level of malondialdehyde (MDA) was decreased, catalase (CAT) and glutathione (GSH) were increased, suggesting that HT may reduce its oxidative damage to the body by promoting alcohol metabolism. Furthermore, according to the mRNA levels of tnf-α, il-6 and il-1β, HT inhibited ethanol-induced inflammation significantly. The anti-inflammatory mechanism of HT may be related to suppress the STAT3/iNOS pathway.Dissussion: Our study showed that HT could ameliorate ethanol-induced hepatic steatosis, oxidative stress and inflammation and provide a new candidate for the prevention and treatment of ALD.
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Key Words
- ADH, alcohol dehydrogenase
- ALD, alcohol liver disease
- ALDH, acetaldehyde dehydrogenase
- ALT, alanine aminotransferase
- AST, aspartate aminotransferase
- CAT, catalase
- COX2, cyclo-oxygen-ase2
- CYP2E1, cytochrome P450 2E1
- DMSO, Dimethyl sulfoxide
- DPPH, 2,2-Diphenyl-1-picrylhydrazyl
- FASN, fatty acid synthase
- GSH, glutathione
- HT, hydroxytyrosol
- HepG2
- Hepatic steatosis
- Hydroxytyrosol
- LDL, low density lipoprotein
- LPS, lipopolysaccharides
- Liver injury
- MDA, malondialdehyde
- NO, nitric oxide
- PPAR-γ, peroxisome proliferators-activated receptor
- ROS, reactive oxygen species
- SREBP-1c, sterol regulatory element-binding protein-1c
- STAT3, signal transducer and activator of transcription 3
- STAT3/iNOS pathway
- TC, total cholesterol
- TG, triglyceride
- alcoholic liver disease
- anti-inflammation
- anti-oxidation
- iNOS, inducible nitric oxide Synthas
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Affiliation(s)
- Xianying Fang
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, People's Republic of China
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, People's Republic of China
| | - Jiamin Cao
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, People's Republic of China
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, People's Republic of China
| | - Zhi Tao
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, People's Republic of China
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, People's Republic of China
| | - Zhiqing Yang
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, People's Republic of China
| | - Yuan Dai
- Yanghe Distillery Co. Ltd, Suqian, People's Republic of China
| | - Linguo Zhao
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, People's Republic of China
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, People's Republic of China
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Wei L, Luo H, Jin Y, Shu Y, Wen C, Qin T, Yang X, Ma L, Liu Y, You Y, Zhou C. Asperosaponin VI protects alcohol-induced hepatic steatosis and injury via regulating lipid metabolism and ER stress. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 121:155080. [PMID: 37757711 DOI: 10.1016/j.phymed.2023.155080] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 04/13/2023] [Accepted: 09/10/2023] [Indexed: 09/29/2023]
Abstract
BACKGROUND Asperosaponin VI (AVI) is a natural triterpenoid saponin isolated from Dipsacus asper Wall with documented anti-inflammatory and bone protective effects. Our previous work reported that AVI protects the liver of septic mice from acute inflammatory damage. In this paper, we further explored the protective effect and the potential mechanisms of AVI in alcoholic fatty liver disease (AFLD). METHODS The Lieber-Decarli model was constructed to evaluate the effect of AVI on AFLD in C57BL/6 J mice. Additional in vitro work was performed to investigate HepG2 cells exposed to alcohol, then analyzed the degree of liver injury by detecting the ALT and AST levels both in the liver and serum. H&E staining and Sirius red staining were used to evaluate the histopathology variations in the liver. Further, observe lipid droplets in the cytoplasm by Oil Red O staining. We detected the expression of inflammatory cytokines with qualitative PCR; ROS, MDA, SOD, and GSH-px levels were analyzed to observe oxidative stress. Finally, exploring the activation of AMPK signaling pathway by real-time PCR and Western blotting. RESULTS Histological examination of liver tissue combined with serum ALT and AST levels showed a significant protective effect of AVI against alcoholic liver injury in AFLD mice. Compared with the model group, AVI evidently improved antioxidant capacity, reduced inflammatory response and lipid accumulation both in vitro and in vivo. For mechanically, it was found that AVI up-regulated phosphorylation level of AMP-activated protein kinase (AMPK) and inhibited the endoplasmic reticulum stress (ER) pathway in AFLD. CONCLUSION AVI protects mice from alcohol-induced hepatic steatosis and liver injury through activating AMPK signaling and repress ER stress, suggesting that it might be a potential therapeutic agent for AFLD.
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Affiliation(s)
- Linlin Wei
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
| | - Hui Luo
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
| | - Yan Jin
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510400, China
| | - Yue Shu
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
| | - Cailing Wen
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
| | - Tian Qin
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
| | - Xinru Yang
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
| | - Liqing Ma
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
| | - Ying Liu
- School of Pharmacy, Guangzhou Xinhua University, Guangzhou, 510520, China; School of Pharmacy, Macau University of Science and Technology, Taipa, Macau
| | - Yan You
- School of Pharmacy, Fudan University, Shanghai, 201203, China.
| | - Chun Zhou
- School of Pharmaceutical Sciences, Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China.
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Elbaset MA, Mohamed BMSA, Moustafa PE, Mansour DF, Afifi SM, Esatbeyoglu T, Abdelrahman SSM, Fayed HM. Erythropoietin Suppresses the Hepatic Fibrosis Caused by Thioacetamide: Role of the PI3K/Akt and TLR4 Signaling Pathways. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:5514248. [PMID: 37649466 PMCID: PMC10465256 DOI: 10.1155/2023/5514248] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 07/16/2023] [Accepted: 07/21/2023] [Indexed: 09/01/2023]
Abstract
Erythropoietin (EPO) is recognized for its function in erythropoiesis; however, its potential antifibrotic effect against liver fibrosis remains unknown. This study examined whether EPO affects thioacetamide (TAA)-induced liver fibrosis by concentrating on the Toll-like receptor 4 (TLR4) cascade and the phosphatidylinositol 3-kinase (PI3K)/Akt pathway as possible pathways. Male Wistar rats were randomized into four groups, which included: the negative control group, the TAA group (intraperitoneal; TAA 100 mg/kg three times per week for 2 weeks), and EPO-treated groups (150 and 300 IU/kg, i.p.) for 2 weeks after TAA injections. EPO attenuated hepatic fibrosis in a dosage-dependent way, as manifested by the diminution in serum alanine aminotransferase and aspartate aminotransferase activities, as well as the increase in albumin level. EPO inhibited the increase in tissue levels of tumor necrosis factors-α, interleukin-1β, transforming growth factor-β1, and TLR4 and raised tissue levels of PI3K and p-PI3K. EPO antioxidant properties were demonstrated by restoring hepatic glutathione and superoxide dismutase by preventing the accumulation of hepatic malondialdehyde. Further, EPO increased the protein expression of PI3K and Akt and decreased TLR4 protein expression. Immunohistochemically, EPO treatment altered tissue histology and downregulated mitogen-activated protein kinase protein expression. Overall, the research suggested that EPO could prevent TAA-induced hepatic fibrosis through upregulating the PI3K/Akt signaling cascade and downregulation the TLR4 downstream axis.
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Affiliation(s)
- Marawan A. Elbaset
- Pharmacology Department, Medical Research and Clinical Studies Institute, National Research Centre, 33 El-Bohouth St., Dokki, P.O. Box 12622, Cairo, Egypt
| | - Bassim M. S. A. Mohamed
- Pharmacology Department, Medical Research and Clinical Studies Institute, National Research Centre, 33 El-Bohouth St., Dokki, P.O. Box 12622, Cairo, Egypt
| | - Passant E. Moustafa
- Pharmacology Department, Medical Research and Clinical Studies Institute, National Research Centre, 33 El-Bohouth St., Dokki, P.O. Box 12622, Cairo, Egypt
| | - Dina F. Mansour
- Pharmacology Department, Medical Research and Clinical Studies Institute, National Research Centre, 33 El-Bohouth St., Dokki, P.O. Box 12622, Cairo, Egypt
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Galala University, Attaka, Suez, Egypt
| | - Sherif M. Afifi
- Pharmacognosy Department, Faculty of Pharmacy, University of Sadat City, Sadat City 32897, Egypt
| | - Tuba Esatbeyoglu
- Department of Food Development and Food Quality, Institute of Food Science and Human Nutrition, Gottfried Wilhelm Leibniz University Hannover, Am Kleinen Felde 30, Hannover 30167, Germany
| | - Sahar S. M. Abdelrahman
- Department of Pathology, College of Veterinary Medicine, Cairo University, P.O. Box 12211, Cairo, Egypt
| | - Hany M. Fayed
- Pharmacology Department, Medical Research and Clinical Studies Institute, National Research Centre, 33 El-Bohouth St., Dokki, P.O. Box 12622, Cairo, Egypt
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6
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Eilam Y, Khattib H, Pintel N, Avni D. Microalgae-Sustainable Source for Alternative Proteins and Functional Ingredients Promoting Gut and Liver Health. GLOBAL CHALLENGES (HOBOKEN, NJ) 2023; 7:2200177. [PMID: 37205927 PMCID: PMC10190620 DOI: 10.1002/gch2.202200177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 01/27/2023] [Indexed: 05/21/2023]
Abstract
Dietary proteins derived from animal sources, although containing well-balanced profiles of essential amino acids, have considerable environmental and adverse health effects associated with the intake of some animal protein-based products. Consuming foods based on animal proteins carries a higher risk of developing non-communicable diseases such as cancer, heart disease, non-alcoholic fatty liver disease (NAFLD), and inflammatory bowel disease (IBD). Moreover, dietary protein consumption is increasing due to population growth, posing a supply challenge. There is, therefore, growing interest in discovering novel alternative protein sources. In this context, microalgae have been recognized as strategic crops that can provide a sustainable source of protein. Compared to conventional high-protein crops, using microalgal biomass for protein production presents several advantages in food and feed in terms of productivity, sustainability, and nutritional value. Moreover, microalgae positively impact the environment by not exploiting land or causing water pollution. Many studies have revealed the potential of microalgae as an alternative protein source with the added value of positive effects on human health due to their anti-inflammatory, antioxidant, and anti-cancer properties. The main emphasis of this review is on the potential health-promoting applications of microalgae-based proteins, peptides, and bioactive substances for IBD and NAFLD.
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Affiliation(s)
- Yahav Eilam
- Sphingolipids, Active Metabolites, and Immune Modulation LaboratoryMIGAL – Galilee Research InstituteTarshish 2Kiryat ShemonaNorth1101600Israel
- Department of BiotechnologyTel Hai CollegeUpper GalileeNorth1220800Israel
| | - Hamdan Khattib
- Sphingolipids, Active Metabolites, and Immune Modulation LaboratoryMIGAL – Galilee Research InstituteTarshish 2Kiryat ShemonaNorth1101600Israel
| | - Noam Pintel
- Sphingolipids, Active Metabolites, and Immune Modulation LaboratoryMIGAL – Galilee Research InstituteTarshish 2Kiryat ShemonaNorth1101600Israel
| | - Dorit Avni
- Sphingolipids, Active Metabolites, and Immune Modulation LaboratoryMIGAL – Galilee Research InstituteTarshish 2Kiryat ShemonaNorth1101600Israel
- Department of BiotechnologyTel Hai CollegeUpper GalileeNorth1220800Israel
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7
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Ma DW, Ha J, Yoon KS, Kang I, Choi TG, Kim SS. Innate Immune System in the Pathogenesis of Non-Alcoholic Fatty Liver Disease. Nutrients 2023; 15:2068. [PMID: 37432213 DOI: 10.3390/nu15092068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/17/2023] [Accepted: 04/21/2023] [Indexed: 07/12/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a prevalent condition characterized by lipid accumulation in hepatocytes with low alcohol consumption. The development of sterile inflammation, which occurs in response to a range of cellular stressors or injuries, has been identified as a major contributor to the pathogenesis of NAFLD. Recent studies of the pathogenesis of NAFLD reported the newly developed roles of damage-associated molecular patterns (DAMPs). These molecules activate pattern recognition receptors (PRRs), which are placed in the infiltrated neutrophils, dendritic cells, monocytes, or Kupffer cells. DAMPs cause the activation of PRRs, which triggers a number of immunological responses, including the generation of cytokines that promote inflammation and the localization of immune cells to the site of the damage. This review provides a comprehensive overview of the impact of DAMPs and PRRs on the development of NAFLD.
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Affiliation(s)
- Dae Won Ma
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Joohun Ha
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kyung Sik Yoon
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Insug Kang
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Tae Gyu Choi
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sung Soo Kim
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
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Ji L, Deng H, Xue H, Wang J, Hong K, Gao Y, Kang X, Fan G, Huang W, Zhan J, You Y. Research progress regarding the effect and mechanism of dietary phenolic acids for improving nonalcoholic fatty liver disease via gut microbiota. Compr Rev Food Sci Food Saf 2023; 22:1128-1147. [PMID: 36717374 DOI: 10.1111/1541-4337.13106] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 12/16/2022] [Accepted: 12/22/2022] [Indexed: 02/01/2023]
Abstract
Phenolic acids (PAs), a class of small bioactive molecules widely distributed in food and mainly found as secondary plant metabolites, present significant advantages such as antioxidant activity and other health benefits. The global epidemic of nonalcoholic fatty liver disease (NAFLD) is becoming a serious public health problem. Existing studies showed that gut microbiota (GM) dysbiosis is highly associated with the occurrence and development of NAFLD. In recent years, progress has been made in the study of the relationship among PA compounds, GM, and NAFLD. PAs can regulate the composition and functions of the GM to promote human health, while GM can increase the dietary sources of PAs and improve its bioavailability. This paper discussed PAs, GM, and their interrelationship while introducing several representative dietary PA sources and examining the absorption and metabolism of PAs mediated by GM. It also summarizes the effect and mechanisms of PAs in improving and regulating NAFLD via GM and their metabolites. This helps to better evaluate the potential preventive effect of PAs on NAFLD via the regulation of GM and expands the utilization of PAs and PA-rich food resources.
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Affiliation(s)
- Lin Ji
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Huan Deng
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Huimin Xue
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Jiting Wang
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Kexin Hong
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Yunxiao Gao
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Xiping Kang
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Guanghe Fan
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Weidong Huang
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Jicheng Zhan
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Yilin You
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
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9
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Xu J, Wei Y, Huang Y, Wei X. Regulatory Effects and Molecular Mechanisms of Tea and Its Active Compounds on Nonalcoholic Fatty Liver Disease. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3103-3124. [PMID: 36773311 DOI: 10.1021/acs.jafc.2c07702] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD), the most common chronic liver disease, is a multifactorial disease resulting from the interaction between environment, genetic background, and metabolic stress. Most treatments for NAFLD include dietary intervention and exercise show limited efficacy due to the complex mechanisms involved in NAFLD. Meanwhile, drug therapy is accompanied by serious side effects. The development of high-efficiency natural supplements is a sustainable strategy for the prevention and treatment of NAFLD. As the second most consumed beverage, tea has health benefits that have been widely recognized. Nevertheless, the intervention of tea active compounds in NAFLD has received limited attention. Tea contains abundant bioactive compounds with potential effects on NAFLD, such as catechins, flavonoids, theanine, tea pigments, and tea polysaccharides. We reviewed the intrinsic and environmental factors and pathogenic mechanisms that affect the occurrence and development of NAFLD, and summarized the influences of exercise, drugs, diet, and tea drinking on NAFLD. On this basis, we further analyzed the potential effects and molecular regulatory mechanisms of tea active compounds on NAFLD and proposed future development directions. This review hopes to provide novel insights into the development and application of tea active compounds in the prevention and treatment of NAFLD.
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Affiliation(s)
- Jia Xu
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200240, PR China
| | - Yang Wei
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
| | - Yi Huang
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
| | - Xinlin Wei
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
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Kotlyarov S. Immune and metabolic cross-links in the pathogenesis of comorbid non-alcoholic fatty liver disease. World J Gastroenterol 2023; 29:597-615. [PMID: 36742172 PMCID: PMC9896611 DOI: 10.3748/wjg.v29.i4.597] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/28/2022] [Accepted: 11/10/2022] [Indexed: 01/20/2023] Open
Abstract
In recent years, there has been a steady growth of interest in non-alcoholic fatty liver disease (NAFLD), which is associated with negative epidemiological data on the prevalence of the disease and its clinical significance. NAFLD is closely related to the metabolic syndrome and these relationships are the subject of active research. A growing body of evidence shows cross-linkages between metabolic abnormalities and the innate immune system in the development and progression of NAFLD. These links are bidirectional and largely still unclear, but a better understanding of them will improve the quality of diagnosis and management of patients. In addition, lipid metabolic disorders and the innate immune system link NAFLD with other diseases, such as atherosclerosis, which is of great clinical importance.
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Affiliation(s)
- Stanislav Kotlyarov
- Department of Nursing, Ryazan State Medical University, Ryazan 390026, Russia
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Wang T, Xu ZH. Natural Compounds with Aldose Reductase (AR) Inhibition: A Class of Medicative Agents for Fatty Liver Disease. Comb Chem High Throughput Screen 2023; 26:1929-1944. [PMID: 36655533 DOI: 10.2174/1386207326666230119101011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 11/03/2022] [Accepted: 11/16/2022] [Indexed: 01/20/2023]
Abstract
Fatty liver disease (FLD), which includes both non-alcoholic fatty liver disease (NAFLD) and alcoholic fatty liver disease (ALD), is a worldwide health concern. The etiology of ALD is long-term alcohol consumption, while NAFLD is defined as an abnormal amount of lipid present in liver cells, which is not caused by alcohol intake and has recently been identified as a hepatic manifestation of metabolic syndrome (such as type 2 diabetes, obesity, hypertension, and obesity). Inflammation, oxidative stress, and lipid metabolic dysregulation are all known to play a role in FLD progression. Alternative and natural therapies are desperately needed to treat this disease since existing pharmaceuticals are mostly ineffective. The aldose reductase (AR)/polyol pathway has recently been shown to play a role in developing FLD by contributing to inflammation, oxidative stress, apoptosis, and fat accumulation. Herein, we review the effects of plantderived compounds capable of inhibiting AR in FLD models. Natural AR inhibitors have been found to improve FLD in part by suppressing inflammation, oxidative stress, and steatosis via the regulation of several critical pathways, including the peroxisome proliferator-activated receptor (PPAR) pathway, cytochrome P450 2E1 (CYP2E1) pathway, AMP-activated protein kinase (AMPK) pathway, etc. This review revealed that natural compounds with AR inhibitory effects are a promising class of therapeutic agents for FLD.
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Affiliation(s)
- Tong Wang
- Department of Integrative Medicine, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Zi-Hui Xu
- Department of Integrative Medicine, Xinqiao Hospital, Army Medical University, Chongqing, People's Republic of China
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12
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Huang C, Zhou Y, Cheng J, Guo X, Shou D, Quan Y, Chen H, Chen H, Zhou Y. Pattern recognition receptors in the development of nonalcoholic fatty liver disease and progression to hepatocellular carcinoma: An emerging therapeutic strategy. Front Endocrinol (Lausanne) 2023; 14:1145392. [PMID: 37020586 PMCID: PMC10067914 DOI: 10.3389/fendo.2023.1145392] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 03/08/2023] [Indexed: 04/07/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is characterized by excessive lipid accumulation and has become the leading chronic liver disease worldwide. NAFLD is viewed as the hepatic manifestation of metabolic syndrome, ranging from simple steatosis and nonalcoholic steatohepatitis (NASH) to advanced fibrosis, eventually leading to cirrhosis and hepatocellular carcinoma (HCC). The pathogenesis of NAFLD progression is still not clear. Pattern recognition receptor (PRR)-mediated innate immune responses play a critical role in the initiation of NAFLD and the progression of NAFLD-related HCC. Toll-like receptors (TLRs) and the cyclic GMP-AMP (cGAMP) synthase (cGAS) are the two major PRRs in hepatocytes and resident innate immune cells in the liver. Increasing evidence indicates that the overactivation of TLRs and the cGAS signaling pathways may contribute to the development of liver disorders, including NAFLD progression. However, induction of PRRs is critical for the release of type I interferons (IFN-I) and the maturation of dendritic cells (DCs), which prime systemic antitumor immunity in HCC therapy. In this review, we will summarize the emerging evidence regarding the molecular mechanisms of TLRs and cGAS in the development of NAFLD and HCC. The dysfunction of PRR-mediated innate immune response is a critical determinant of NAFLD pathology; targeting and selectively inhibiting TLRs and cGAS signaling provides therapeutic potential for treating NALF-associated diseases in humans.
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Affiliation(s)
- Chen Huang
- Department of Gastroenterology and Hepatology, Guangzhou Key Laboratory of Digestive Diseases, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Youlian Zhou
- Department of Gastroenterology and Hepatology, Guangzhou Key Laboratory of Digestive Diseases, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
- Department of Gastroenterology and Hepatology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Jiemin Cheng
- Department of Gastroenterology and Hepatology, Guangzhou Key Laboratory of Digestive Diseases, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
- Department of Gastroenterology and Hepatology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Xue Guo
- Department of Gastroenterology and Hepatology, Guangzhou Key Laboratory of Digestive Diseases, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
- Department of Gastroenterology and Hepatology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Diwen Shou
- Department of Gastroenterology and Hepatology, Guangzhou Key Laboratory of Digestive Diseases, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
- Department of Gastroenterology and Hepatology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Ying Quan
- Department of Gastroenterology and Hepatology, Guangzhou Key Laboratory of Digestive Diseases, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
- Department of Gastroenterology and Hepatology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Hanqing Chen
- Department of Gastroenterology and Hepatology, Guangzhou Key Laboratory of Digestive Diseases, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
- Department of Gastroenterology and Hepatology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, China
- *Correspondence: Yongjian Zhou, ; Huiting Chen, ; Hanqing Chen,
| | - Huiting Chen
- Department of Gastroenterology and Hepatology, Guangzhou Key Laboratory of Digestive Diseases, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
- *Correspondence: Yongjian Zhou, ; Huiting Chen, ; Hanqing Chen,
| | - Yongjian Zhou
- Department of Gastroenterology and Hepatology, Guangzhou Key Laboratory of Digestive Diseases, Guangzhou Digestive Disease Center, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
- Department of Gastroenterology and Hepatology, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, China
- *Correspondence: Yongjian Zhou, ; Huiting Chen, ; Hanqing Chen,
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Li B, Hong L, Luo Y, Zhang B, Yu Z, Li W, Cao N, Huang Y, Xu D, Li Y, Tian Y. LPS-Induced Liver Injury of Magang Geese through Toll-like Receptor and MAPK Signaling Pathway. Animals (Basel) 2022; 13:ani13010127. [PMID: 36611736 PMCID: PMC9817723 DOI: 10.3390/ani13010127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 12/24/2022] [Accepted: 12/26/2022] [Indexed: 12/30/2022] Open
Abstract
Lipopolysaccharide (LPS) is one of the main virulence factors of Gram-negative bacteria. In the process of waterfowl breeding, an inflammatory reaction due to LPS infection is easily produced, which leads to a decline in waterfowl performance. The liver plays a vital role in the immune response and the removal of toxic components. Therefore, it is necessary to study the mechanism of liver injury induced by LPS in goose. In this study, a total of 100 1-day-old goslings were randomly divided into a control group and LPS group after 3 days of pre-feeding. On days 21, 23, and 25 of the formal experiment, the control group was intraperitoneally injected with 0.5 mL normal saline, and the LPS group was intraperitoneally injected with LPS 2 mg/(kg body weight) once a day. On day 25 of the experiment, liver samples were collected 3 h after the injection of saline and LPS. The results of histopathology and biochemical indexes showed that the livers of the LPS group had liver morphological structure destruction and inflammatory cell infiltration, and the levels of ALT and AST were increased. Next, RNA sequencing analysis was used to determine the abundances and characteristics of the transcripts, as well as the associated somatic mutations and alternative splicing. We screened 727 differentially expressed genes (DEGs) with p < 0.05 and |log2(Fold Change)| ≥ 1, as the thresholds; GO and KEGG enrichment analysis showed that LPS-induced liver injury may be involved in the Toll-like receptor signaling pathway, MAPK signaling pathway, NOD-like receptor signaling pathway, FoxO, and PPAR signaling pathway. Finally, we intersected the genes enriched in the key pathway of LPS-induced liver injury with the top 50 key genes in protein−protein interaction networks to obtain 28 more critical genes. Among them, 17 genes were enriched in Toll-like signaling pathway and MAPK signaling pathway. Therefore, these results suggest that LPS-induced liver injury in geese may be the result of the joint action of Toll-like receptor, MAPK, NOD-like receptor, FoxO, and PPAR signaling pathway. Among them, the TLR7-mediated MAPK signaling pathway plays a major role.
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Affiliation(s)
- Bingxin Li
- College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangzhou 510225, China
| | - Longsheng Hong
- Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangzhou 510225, China
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yindan Luo
- College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Bingqi Zhang
- College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangzhou 510225, China
| | - Ziyu Yu
- College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangzhou 510225, China
| | - Wanyan Li
- College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangzhou 510225, China
| | - Nan Cao
- College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangzhou 510225, China
| | - Yunmao Huang
- College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangzhou 510225, China
| | - Danning Xu
- College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangzhou 510225, China
| | - Yugu Li
- Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangzhou 510225, China
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yunbo Tian
- College of Animal Science & Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, Guangzhou 510225, China
- Correspondence:
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14
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Tourkochristou E, Assimakopoulos SF, Thomopoulos K, Marangos M, Triantos C. NAFLD and HBV interplay - related mechanisms underlying liver disease progression. Front Immunol 2022; 13:965548. [PMID: 36544761 PMCID: PMC9760931 DOI: 10.3389/fimmu.2022.965548] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 11/15/2022] [Indexed: 12/08/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) and Hepatitis B virus infection (HBV) constitute common chronic liver diseases with worldwide distribution. NAFLD burden is expected to grow in the coming decade, especially in western countries, considering the increased incidence of diabetes and obesity. Despite the organized HBV vaccinations and use of anti-viral therapies globally, HBV infection remains endemic and challenging public health issue. As both NAFLD and HBV have been associated with the development of progressive fibrosis, cirrhosis and hepatocellular carcinoma (HCC), the co-occurrence of both diseases has gained great research and clinical interest. The causative relationship between NAFLD and HBV infection has not been elucidated so far. Dysregulated fatty acid metabolism and lipotoxicity in NAFLD disease seems to initiate activation of signaling pathways that enhance pro-inflammatory responses and disrupt hepatocyte cell homeostasis, promoting progression of NAFLD disease to NASH, fibrosis and HCC and can affect HBV replication and immune encountering of HBV virus, which may further have impact on liver disease progression. Chronic HBV infection is suggested to have an influence on metabolic changes, which could lead to NAFLD development and the HBV-induced inflammatory responses and molecular pathways may constitute an aggravating factor in hepatic steatosis development. The observed altered immune homeostasis in both HBV infection and NAFLD could be associated with progression to HCC development. Elucidation of the possible mechanisms beyond HBV chronic infection and NAFLD diseases, which could lead to advanced liver disease or increase the risk for severe complications, in the case of HBV-NAFLD co-existence is of high clinical significance in the context of designing effective therapeutic targets.
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Affiliation(s)
- Evanthia Tourkochristou
- Division of Gastroenterology, Department of Internal Medicine, Medical School, University of Patras, Patras, Greece
| | - Stelios F. Assimakopoulos
- Division of Infectious Diseases, Department of Internal Medicine, Medical School, University of Patras, Patras, Greece,*Correspondence: Stelios F. Assimakopoulos,
| | - Konstantinos Thomopoulos
- Division of Gastroenterology, Department of Internal Medicine, Medical School, University of Patras, Patras, Greece
| | - Markos Marangos
- Division of Infectious Diseases, Department of Internal Medicine, Medical School, University of Patras, Patras, Greece
| | - Christos Triantos
- Division of Gastroenterology, Department of Internal Medicine, Medical School, University of Patras, Patras, Greece
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15
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Li J, Diamante G, Ahn IS, Wijaya D, Wang X, Chang CH, Ha SM, Immadisetty K, Meng H, Nel A, Yang X, Xia T. Determination of the nanoparticle- and cell-specific toxicological mechanisms in 3D liver spheroids using scRNAseq analysis. NANO TODAY 2022; 47:101652. [PMID: 36911538 PMCID: PMC10004129 DOI: 10.1016/j.nantod.2022.101652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Engineered nanomaterials (ENMs) are commonly used in consumer products, allowing exposure to target organs such as the lung, liver, and skin that could lead to adverse health effects in humans. To better reflect on toxicological effects in liver cells, it is important to consider the contribution of hepatocyte morphology, function, and intercellular interactions in a dynamic 3D microenvironment. Herein, we used a 3D liver spheroid model containing hepatocyte and Kupffer cells (KCs) to study the effects of three different material compositions, namely vanadium pentoxide (V2O5), titanium dioxide (TiO2), or graphene oxide (GO). Additionally, we used single-cell RNA sequencing (scRNAseq) to determine the nanoparticle (NP) and cell-specific toxicological responses. A general finding was that hepatocytes exhibit more variation in gene expression and adaptation of signaling pathways than KCs. TNF-α production tied to the NF-κB pathway was a commonly affected pathway by all NPs while impacts on the metabolic function of hepatocytes were unique to V2O5. V2O5 NPs also showed the largest number of differentially expressed genes in both cell types, many of which are related to pro-inflammatory and apoptotic response pathways. There was also evidence of mitochondrial ROS generation and caspase-1 activation after GO and V2O5 treatment, in association with cytokine production. All considered, this study provides insight into the impact of nanoparticles on gene responses in key liver cell types, providing us with a scRNAseq platform that can be used for high-content screening of nanomaterial impact on the liver, for use in biosafety and biomedical applications.
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Affiliation(s)
- Jiulong Li
- Center of Environmental Implications of Nanotechnology (UC CEIN), California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA
- Division of NanoMedicine, Department of Medicine, California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA
| | - Graciel Diamante
- Department of Integrative Biology and Physiology, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - In Sook Ahn
- Department of Integrative Biology and Physiology, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Darren Wijaya
- Department of Integrative Biology and Physiology, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Xiang Wang
- Center of Environmental Implications of Nanotechnology (UC CEIN), California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA
- Division of NanoMedicine, Department of Medicine, California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA
| | - Chong Hyun Chang
- Center of Environmental Implications of Nanotechnology (UC CEIN), California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA
- Division of NanoMedicine, Department of Medicine, California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA
| | - Sung-min Ha
- Department of Integrative Biology and Physiology, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Kavya Immadisetty
- Department of Integrative Biology and Physiology, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Huan Meng
- Center of Environmental Implications of Nanotechnology (UC CEIN), California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA
- Division of NanoMedicine, Department of Medicine, California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA
| | - André Nel
- Center of Environmental Implications of Nanotechnology (UC CEIN), California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA
- Division of NanoMedicine, Department of Medicine, California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA
| | - Xia Yang
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
- Department of Integrative Biology and Physiology, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Tian Xia
- Center of Environmental Implications of Nanotechnology (UC CEIN), California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA
- Division of NanoMedicine, Department of Medicine, California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA
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Wang Q, Duan X, Li S, Lai H, Cheng W, Ao J, Zhang J, Duan C. Active Compounds Screening and Hepatoprotective Mechanism of Shuganning Injection Based on Network Pharmacology and Experimental Validation. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221124756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective: The study aimed to analyze the core active compounds and the potential mechanism of Shuganning injection (SGNI) through network pharmacology with biological experiments. Methods: Active compounds and targets of SGNI were screened from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP) and Targetnet database, whereas the liver disease-related targets were identified through the Genecards and Online Mendelian Inheritance in Man databases. The “compound-target” and “protein-protein interaction” networks construction, core target identification, and pathway enrichment were then performed. Finally, the exploration of the mechanism of action for SGNI against acetaminophen (APAP)-induced liver injury in the HepaRG cells and validation of three identified protein targets was also carried out through western blot assay, including tumor protein p53 (p53, TP53), transcription factor Jun (Jun), and Caspase 3 (CASP3). Results: The result showed that a total of 312 active compounds of SGNI and 408 liver disease-related targets, as well as 131 core targets were revealed through databases, such as prostaglandin G/H synthase 1, prostaglandin G/H synthase 2, and nuclear factor NF-kappa B (NF-kB) p65 subunit (RELA). The core targets of SGNI were involved in regulating hepatitis B signaling pathway, NF-kB signaling pathway, Toll-like receptor signaling pathway, and tumor necrosis factor (TNF) signaling pathway. Moreover, results of molecular docking in this study indicated that chlorogenic acid, geniposide, baicalin, indirubin, and ganoderic acid A could act on RELA, JUN, TP53, TNF, CASP3, Caspase 8 (CASP8) and nuclear factor NF-kB p105 subunit (NFKB1). Similarly, results of western blot revealed that SGNI reduced the expression of p53, Jun, and Caspase 3 proteins in HepaRG cells as compared with the APAP group ( P < 0.01 or P < 0.05). Conclusion: The present study verified the therapeutic effects and mechanism of SGNI on liver diseases and pointed out new directions for further research.
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Affiliation(s)
- Qiyi Wang
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, China
| | - Xiaotong Duan
- School of Basic Medical Sciences, Zunyi Medical University, Zunyi, Guizhou, China
| | - Shan Li
- School of Basic Medical Sciences, Zunyi Medical University, Zunyi, Guizhou, China
| | - Huaqing Lai
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, China
| | - Weina Cheng
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, China
| | - Jingwen Ao
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, China
| | - Jianyong Zhang
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Cancan Duan
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
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Zhou Y, Zhang H, Yao Y, Zhang X, Guan Y, Zheng F. CD4 + T cell activation and inflammation in NASH-related fibrosis. Front Immunol 2022; 13:967410. [PMID: 36032141 PMCID: PMC9399803 DOI: 10.3389/fimmu.2022.967410] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 07/22/2022] [Indexed: 12/12/2022] Open
Abstract
Liver fibrosis is a common pathological feature of end stage liver failure, a severe life-threatening disease worldwide. Nonalcoholic fatty liver disease (NAFLD), especially its more severe form with steatohepatitis (NASH), results from obesity, type 2 diabetes and metabolic syndrome and becomes a leading cause of liver fibrosis. Genetic factor, lipid overload/toxicity, oxidative stress and inflammation have all been implicated in the development and progression of NASH. Both innate immune response and adaptive immunity contribute to NASH-associated inflammation. Innate immunity may cause inflammation and subsequently fibrosis via danger-associated molecular patterns. Increasing evidence indicates that T cell-mediated adaptive immunity also provokes inflammation and fibrosis in NASH via cytotoxicity, cytokines and other proinflammatory and profibrotic mediators. Recently, the single-cell transcriptome profiling has revealed that the populations of CD4+ T cells, CD8+ T cells, γδ T cells, and TEMs are expanded in the liver with NASH. The activation of T cells requires antigen presentation from professional antigen-presenting cells (APCs), including macrophages, dendritic cells, and B-cells. However, since hepatocytes express MHCII molecules and costimulators, they may also act as an atypical APC to promote T cell activation. Additionally, the phenotypic switch of hepatocytes to proinflammatory cells in NASH contributes to the development of inflammation. In this review, we focus on T cells and in particular CD4+ T cells and discuss the role of different subsets of CD4+ T cells including Th1, Th2, Th17, Th22, and Treg in NASH-related liver inflammation and fibrosis.
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Affiliation(s)
- Yunfeng Zhou
- Department of Physiology, Medical Research Center, Shenzhen University, Shenzhen, China
| | - Haibo Zhang
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, China
| | - Yao Yao
- Division of Nephrology, Affiliated Hospital of Nantong University, Nantong, China
| | - Xiaoyan Zhang
- Wuhu Hospital & Health Science Center, East China Normal University, Shanghai, China
| | - Youfei Guan
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, China
| | - Feng Zheng
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, China
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18
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Wu R, Fan X, Wang Y, Shen M, Zheng Y, Zhao S, Yang L. Mesenchymal Stem Cell-Derived Extracellular Vesicles in Liver Immunity and Therapy. Front Immunol 2022; 13:833878. [PMID: 35309311 PMCID: PMC8930843 DOI: 10.3389/fimmu.2022.833878] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 02/15/2022] [Indexed: 12/11/2022] Open
Abstract
Mesenchymal stem cells (MSCs), as the most common cell source for stem cell therapy, play an important role in the modulation of innate and adaptive immune responses and have been widely used in clinical trials to treat autoimmune and inflammatory diseases. Recent experimental and clinical studies have shown that MSC-derived extracellular vesicles (MSC-EVs) can inhibit the activation and proliferation of a variety of proinflammatory cells, such as Th1, Th17 and M1 macrophages, reducing the secretion of proinflammatory cytokines, while promoting the proliferation of anti-inflammatory cells, such as M2 macrophages and Tregs, and increasing the secretion of anti-inflammatory cytokines, thus playing a role in immune regulation and exhibiting immunomodulatory functions. Besides MSC-EVs are more convenient and less immunogenic than MSCs. There is growing interest in the role of MSC-EVs in liver diseases owing to the intrinsic liver tropism of MSC-EVs. In this review, we focus on the immunomodulatory effects of MSC-EVs and summarize the pivotal roles of MSC-EVs as a cell-free therapy in liver diseases, including NAFLD, AIH, acute liver failure, liver fibrosis and hepatic ischemia–reperfusion injury. Moreover, we provide a concise overview of the potential use and limits of MSC-EVs in clinical application.
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Raftar SKA, Ashrafian F, Abdollahiyan S, Yadegar A, Moradi HR, Masoumi M, Vaziri F, Moshiri A, Siadat SD, Zali MR. The anti-inflammatory effects of Akkermansia muciniphila and its derivates in HFD/CCL4-induced murine model of liver injury. Sci Rep 2022; 12:2453. [PMID: 35165344 PMCID: PMC8844054 DOI: 10.1038/s41598-022-06414-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 01/24/2022] [Indexed: 12/14/2022] Open
Abstract
Inflammation plays a critical role in the promotion of hepatocyte damage and liver fibrosis. In recent years the protective role of Akkermansia muciniphila, a next-generation beneficial microbe, has been suggested for metabolic and inflammatory disorders. In this study, we aimed to evaluate the effects of live and pasteurized A. muciniphila and its extra cellular vesicles (EVs) on inflammatory markers involved in liver fibrosis in a mouse model of a high-fat diet (HFD)/carbon tetrachloride (CCl4)-induced liver injury. Firstly, the responses of hepatic stellate cells (HSCs) to live and pasteurized A. muciniphila and its EVs were examined in the quiescent and LPS-activated LX-2 cells. Next, the anti-inflammatory effects of different forms of A. muciniphila were examined in the mouse model of HFD/CCl4-induced liver injury. The gene expression of various inflammatory markers was evaluated in liver, colon, and white adipose tissues. The cytokine secretion in the liver and white adipose tissues was also measured by ELISA. The results showed that administration of live and pasteurized A. muciniphila and its EVs leads to amelioration in HSCs activation. Based on data obtained from the histopathological analysis, an improvement in gut health was observed through enhancing the epithelium and mucosal layer thickness and strengthening the intestinal integrity in all treatments. Moreover, live A. muciniphila and its EVs had inhibitory effects on liver inflammation and hepatocytes damage. In addition, the tissue cytokine production and inflammatory gene expression levels revealed that live A. muciniphila and its EVs had more pronounced anti-inflammatory effects on liver and adipose tissues. Furthermore, EVs had better effects on the modulation of gene expression related to TLRs, PPARs, and immune response in the liver. In conclusion, the present results showed that oral administration of A. muciniphila and its derivatives for four weeks could enhance the intestinal integrity and anti-inflammatory responses of the colon, adipose, and liver tissues and subsequently prevent liver injury in HFD/CCL4 mice.
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Feng R, Adeniran SO, Huang F, Li Y, Ma M, Zheng P, Zhang G. The ameliorative effect of melatonin on LPS-induced Sertoli cells inflammatory and tight junctions damage via suppression of the TLR4/MyD88/NF-κB signaling pathway in newborn calf. Theriogenology 2021; 179:103-116. [PMID: 34871925 DOI: 10.1016/j.theriogenology.2021.11.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 11/20/2021] [Accepted: 11/25/2021] [Indexed: 12/23/2022]
Abstract
The blood-testicular barrier (BTB) is involved in spermatogenesis, protects sperm development, and plays a crucial role in the reproductive process. Tight junctions (TJs) between Sertoli cells (SCs) are the key structure of (BTB), and if its structure is damaged, BTB function is affected. The cellular inflammation caused by Gram-negative bacteria affects the structural integrity of TJs. Melatonin (MT) has anti-inflammatory effects; however, the effect of MT in newborn calf SCs is unknown. Therefore, this experiment studied the protective effect of MT. The results showed that LPS upregulated TLR4, MyD88, and NF-κB expressions, in turn, activated the TLR4/MyD88/NF-κB signaling pathway, produced a large amount of IL-6 and IL-1β, downregulated the expression of ZO-1 and Occludin, and reduced the viability of SCs, which resulted in the inflammatory response of SCs and damage of TJs. The addition of MT decreased TLR4, MyD88, and NF-κB expressions, it then inhibited the activation of TLR4/MyD88/NF-κB signaling pathway, downregulated the expression of IL-6 and IL-1β, upregulated the expression of ZO-1 and Occludin, and increased the cell viability, thereby alleviating the inflammatory response of SCs, and restored the TJs structure. Overall, our results reveal that MT can alleviate LPS-induced in newborn calf SCs Inflammation and TJs injury through TLR4/MyD88/NF-κB signaling pathway.
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Affiliation(s)
- Rui Feng
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Samson O Adeniran
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Fushuo Huang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Yulong Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Mingjun Ma
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Peng Zheng
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Guixue Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China.
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21
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Getachew A, Hussain M, Huang X, Li Y. Toll-like receptor 2 signaling in liver pathophysiology. Life Sci 2021; 284:119941. [PMID: 34508761 DOI: 10.1016/j.lfs.2021.119941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 08/19/2021] [Accepted: 08/30/2021] [Indexed: 12/24/2022]
Abstract
Chronic liver diseases (CLD) are among the major cause of mortality and morbidity worldwide. Despite current achievements in the area of hepatitis virus, chronic alcohol abuse and high-fat diet are still fueling an epidemic of severe liver disease, for which, an effective therapy has yet not been discovered. In particular, the therapeutic regimens that could prevent the progression of fibrosis and, in turn, aid cirrhotic liver to develop a robust regenerative capability are intensively needed. To this context, a better understanding of the signaling pathways regulating hepatic disease development may be of critical value. In general, the liver responds to various insults with an orchestrated healing process involving variety of signaling pathways. One such pathway is the TLR2 signaling pathway, which essentially regulates adult liver pathogenesis and thus has emerged as an attractive target to treat liver disease. TLR2 is expressed by different liver cells, including Kupffer cells (KCs), hepatocytes, and hepatic stellate cells (HSCs). From a pathologic perspective, the crosstalk between antigens and TLR2 may preferentially trigger a distinctive set of signaling mechanisms in these liver cells and, thereby, induce the production of inflammatory and fibrogenic cytokines that can initiate and prolong liver inflammation, ultimately leading to fibrosis. In this review, we summarize the currently available evidence regarding the role of TLR2 signaling in hepatic disease progression. We first elaborate its pathological involvement in liver-disease states, such as inflammation, fibrosis, and cirrhosis. We then discuss how therapeutic targeting of this pathway may help to alleviate its disease-related functioning.
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Affiliation(s)
- Anteneh Getachew
- Institute of Public Health, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China; Guangdong Provincial Key Laboratory of Biocomputing, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
| | - Muzammal Hussain
- Center for Chemical Biology and Drug Discovery, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
| | - Xinping Huang
- Institute of Public Health, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China; Guangdong Provincial Key Laboratory of Biocomputing, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
| | - Yinxiong Li
- Institute of Public Health, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China; Guangdong Provincial Key Laboratory of Biocomputing, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China; Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou 510005, China.
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22
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Relation between levels of toll-like receptors 3 and 7 and clinical profile of Child-Pugh B cirrhotic patients. Clin Exp Hepatol 2021; 7:293-296. [PMID: 34712831 PMCID: PMC8527339 DOI: 10.5114/ceh.2021.109336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Accepted: 05/16/2021] [Indexed: 11/26/2022] Open
Abstract
Aim of the study Growing data show that toll-like receptors (TLRs) have considerable roles in the pathogenesis of many liver diseases. We aimed to study the relation between TLR3 and TLR7 levels and clinical manifestations of liver decompensation among hepatitis C virus (HCV)-infected Child-Pugh B patients. Material and methods This study included 60 adult patients with Child-Pugh B liver cirrhosis on top of untreated HCV infection. We performed a two-step clustering algorithm depending on TLR-3 gene expression, TLR-7 gene expression, and other influential patients’ characteristics. Results Patients were optimally divided into 2 clusters, each cluster containing 30 patients. The average silhouette score of the clustering algorithm was 0.52, indicating a good clustering power of the model. Patients in cluster 1 showed lower relative expression of TLR3 (0.188 vs. 0.29). The same was true of TLR7 (0.20 vs. 0.31). All patients within cluster 1 had lower limb edema and 93% of them had ascites. On the other hand, no one within cluster 2 had ascites or lower limb edema. The mean platelet count was lower in patients within cluster 1 (74,000 vs. 100,000 cell/mm3). The mean international normalized ratio (INR) level was higher in cluster 1 (1.61 vs. 1.3). The mean Model for End-Stage Liver Disease (MELD) score was higher in cluster 1 (15 vs. 10). Conclusions From these results, we can suggest that lower TLR3 and TLR7 can lead to worse clinical manifestations among patients with HCV-related liver cirrhosis. A deeper exploration of this point can open the door for new approaches for managing decompensated cirrhosis.
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23
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Guerra JVS, Dias MMG, Brilhante AJVC, Terra MF, García-Arévalo M, Figueira ACM. Multifactorial Basis and Therapeutic Strategies in Metabolism-Related Diseases. Nutrients 2021; 13:nu13082830. [PMID: 34444990 PMCID: PMC8398524 DOI: 10.3390/nu13082830] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/09/2021] [Accepted: 08/11/2021] [Indexed: 12/11/2022] Open
Abstract
Throughout the 20th and 21st centuries, the incidence of non-communicable diseases (NCDs), also known as chronic diseases, has been increasing worldwide. Changes in dietary and physical activity patterns, along with genetic conditions, are the main factors that modulate the metabolism of individuals, leading to the development of NCDs. Obesity, diabetes, metabolic associated fatty liver disease (MAFLD), and cardiovascular diseases (CVDs) are classified in this group of chronic diseases. Therefore, understanding the underlying molecular mechanisms of these diseases leads us to develop more accurate and effective treatments to reduce or mitigate their prevalence in the population. Given the global relevance of NCDs and ongoing research progress, this article reviews the current understanding about NCDs and their related risk factors, with a focus on obesity, diabetes, MAFLD, and CVDs, summarizing the knowledge about their pathophysiology and highlighting the currently available and emerging therapeutic strategies, especially pharmacological interventions. All of these diseases play an important role in the contamination by the SARS-CoV-2 virus, as well as in the progression and severity of the symptoms of the coronavirus disease 2019 (COVID-19). Therefore, we briefly explore the relationship between NCDs and COVID-19.
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Affiliation(s)
- João V. S. Guerra
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), Polo II de Alta Tecnologia—R. Giuseppe Máximo Scolfaro, Campinas 13083-100, Brazil; (J.V.S.G.); (M.M.G.D.); (M.F.T.)
- Graduate Program in Pharmaceutical Sciences, Faculty Pharmaceutical Sciences, University of Campinas, Campinas 13083-970, Brazil
| | - Marieli M. G. Dias
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), Polo II de Alta Tecnologia—R. Giuseppe Máximo Scolfaro, Campinas 13083-100, Brazil; (J.V.S.G.); (M.M.G.D.); (M.F.T.)
- Graduate Program in Functional and Molecular Biology, Institute of Biology, State University of Campinas (Unicamp), Campinas 13083-970, Brazil;
| | - Anna J. V. C. Brilhante
- Graduate Program in Functional and Molecular Biology, Institute of Biology, State University of Campinas (Unicamp), Campinas 13083-970, Brazil;
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biorenewables National Laboratory (LNBR), Polo II de Alta Tecnologia—R. Giuseppe Máximo Scolfaro, Campinas 13083-100, Brazil
| | - Maiara F. Terra
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), Polo II de Alta Tecnologia—R. Giuseppe Máximo Scolfaro, Campinas 13083-100, Brazil; (J.V.S.G.); (M.M.G.D.); (M.F.T.)
- Graduate Program in Functional and Molecular Biology, Institute of Biology, State University of Campinas (Unicamp), Campinas 13083-970, Brazil;
| | - Marta García-Arévalo
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), Polo II de Alta Tecnologia—R. Giuseppe Máximo Scolfaro, Campinas 13083-100, Brazil; (J.V.S.G.); (M.M.G.D.); (M.F.T.)
- Correspondence: or (M.G.-A.); (A.C.M.F.)
| | - Ana Carolina M. Figueira
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), Polo II de Alta Tecnologia—R. Giuseppe Máximo Scolfaro, Campinas 13083-100, Brazil; (J.V.S.G.); (M.M.G.D.); (M.F.T.)
- Correspondence: or (M.G.-A.); (A.C.M.F.)
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24
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Eritoran Attenuates Hepatic Inflammation and Fibrosis in Mice with Chronic Liver Injury. Cells 2021; 10:cells10061562. [PMID: 34205789 PMCID: PMC8235164 DOI: 10.3390/cells10061562] [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: 04/25/2021] [Revised: 06/10/2021] [Accepted: 06/18/2021] [Indexed: 12/13/2022] Open
Abstract
Toll-like receptor 4 (TLR4) signaling plays a key role in liver inflammation and fibrosis. The therapeutic effects of eritoran, a TLR4 antagonist, in mice with chronic liver injury remained unclear. C57BL/6 mice were fed a fast-food diet (FFD) or treated with carbon tetrachloride (CCl4) to induce chronic liver injury. Eritoran (10 mg/kg) or a vehicle was randomly intraperitoneally administered to the FFD-fed mice and the CCl4-injured mice. Primary mouse liver cells were cultured with lipopolysaccharide (LPS) or eritoran. In both FFD and CCl4 mouse models, eritoran significantly reduced serum ALT levels and decreased hepatic inflammatory cell infiltration without altering hepatic steatosis. Additionally, eritoran attenuated liver fibrosis by decreasing hepatic stellate cells (HSCs) activation and the abundance of α-smooth muscle actin and transforming growth factor-β1. Hepatic TLR4 downstream signaling including MyD88 expression, NF-κB p65 nuclear translocation, p38 and JNK phosphorylation were successfully inhibited by eritoran. In the in vitro study, LPS-induced nuclear translocation of NF-κB in primary HSCs and Kupffer cells was significantly suppressed by eritoran. In conclusion, eritoran attenuated hepatic inflammation and fibrosis by inhibition of the TLR4 signaling pathway in mice with chronic liver injury. Eritoran may serve as a potential drug for chronic liver disease.
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25
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Jhanji V, Billig I, Yam GHF. Cell-Free Biological Approach for Corneal Stromal Wound Healing. Front Pharmacol 2021; 12:671405. [PMID: 34122095 PMCID: PMC8193853 DOI: 10.3389/fphar.2021.671405] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 05/17/2021] [Indexed: 12/13/2022] Open
Abstract
Corneal opacification is the fourth most common cause of blindness globally behind cataracts, glaucoma, and age-related macular degeneration. The standard treatment of serious corneal scarring is corneal transplantation. Though it is effective for restoring vision, the treatment outcome is not optimal, due to limitations such as long-term graft survival, lifelong use of immunosuppressants, and a loss of corneal strength. Regulation of corneal stromal wound healing, along with inhibition or downregulation of corneal scarring is a promising approach to prevent corneal opacification. Pharmacological approaches have been suggested, however these are fraught with side effects. Tissue healing is an intricate process that involves cell death, proliferation, differentiation, and remodeling of the extracellular matrix. Current research on stromal wound healing is focused on corneal characteristics such as the immune response, angiogenesis, and cell signaling. Indeed, promising new technologies with the potential to modulate wound healing are under development. In this review, we provide an overview of cell-free strategies and some approaches under development that have the potential to control stromal fibrosis and scarring, especially in the context of early intervention.
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Affiliation(s)
- Vishal Jhanji
- Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Isabelle Billig
- Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Gary Hin-Fai Yam
- Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA, United States
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26
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Keshavarz Azizi Raftar S, Abdollahiyan S, Azimirad M, Yadegar A, Vaziri F, Moshiri A, Siadat SD, Zali MR. The Anti-fibrotic Effects of Heat-Killed Akkermansia muciniphila MucT on Liver Fibrosis Markers and Activation of Hepatic Stellate Cells. Probiotics Antimicrob Proteins 2021; 13:776-787. [PMID: 33433897 DOI: 10.1007/s12602-020-09733-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2020] [Indexed: 12/17/2022]
Abstract
Hepatic stellate cell (HSC) activation is a key phenomenon in development of liver fibrosis. Recently, Akkermansia muciniphila has been introduced as a next-generation microbe residing in the mucosal layer of the human gut. Due to the probable risks associated with the use of live probiotics, the tendency to use heat-killed bacteria has been raised. Herein, we investigated the potential anti-fibrotic effects of heat-killed A. muciniphila MucT on activation of HSCs. The human LX-2 cells were stimulated by various concentrations of LPS to evaluate the optimal concentration for HSC activation. Cell viability of LX-2 cells treated with LPS and heat-killed A. muciniphila MucT was measured by MTT assay. Scanning electron microscopy was used to analyze the morphology of heat-killed bacteria. Quiescent and LPS-stimulated LX-2 cells were coinfected with heat-killed A. muciniphila MucT. The gene expression of α-SMA, TIMP, Col1, TGF-β, TLR4, and PPARγ was analyzed using quantitative real-time PCR. Our results showed that LPS treatment led to a significant increase in fibrosis markers in a concentration-independent manner (P < 0.0001), and significantly downregulated the expression of PPARγ (P < 0.0001). The heat-killed A. muciniphila MucT could significantly modulate the expression of fibrosis markers particularly in MOI 10 (P < 0.0001), and reversed the HSC activation in LPS-stimulated LX-2 cells. In conclusion, we demonstrated that heat-killed A. muciniphila MucT was safe and capable to ameliorate LPS-induced HSC activation through modulation of fibrosis markers. Further in vivo studies are required to validate the anti-fibrotic properties of heat-killed A. muciniphila MucT.
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Affiliation(s)
- Shahrbanoo Keshavarz Azizi Raftar
- Microbiology Research Center, Pasteur Institute of Iran, Tehran, Iran.,Mycobacteriology and Pulmonary Research Department, Pasteur Institute of Iran, Tehran, Iran.,Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sara Abdollahiyan
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Masoumeh Azimirad
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Yadegar
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Farzam Vaziri
- Microbiology Research Center, Pasteur Institute of Iran, Tehran, Iran.,Mycobacteriology and Pulmonary Research Department, Pasteur Institute of Iran, Tehran, Iran
| | - Arfa Moshiri
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Experimental Therapy Unit, Laboratory of Oncology, G. Gaslini Children's Hospital, Genoa, Italy
| | - Seyed Davar Siadat
- Microbiology Research Center, Pasteur Institute of Iran, Tehran, Iran.,Mycobacteriology and Pulmonary Research Department, Pasteur Institute of Iran, Tehran, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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27
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Qi X, Yang M, Stenberg J, Dey R, Fogwe L, Alam MS, Kimchi ET, Staveley-O'Carroll KF, Li G. Gut microbiota mediated molecular events and therapy in liver diseases. World J Gastroenterol 2020; 26:7603-7618. [PMID: 33505139 PMCID: PMC7789060 DOI: 10.3748/wjg.v26.i48.7603] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/24/2020] [Accepted: 12/06/2020] [Indexed: 02/06/2023] Open
Abstract
Gut microbiota is a community of microorganisms that reside in the gastrointestinal tract. An increasing number of studies has demonstrated that the gut-liver axis plays a critical role in liver homeostasis. Dysbiosis of gut microbiota can cause liver diseases, including nonalcoholic fatty liver disease and alcoholic liver disease. Preclinical and clinical investigations have substantiated that the metabolites and other molecules derived from gut microbiota and diet interaction function as mediators to cause liver fibrosis, cirrhosis, and final cancer. This effect has been demonstrated to be associated with dysregulation of intrahepatic immunity and liver metabolism. Targeting these findings have led to the development of novel preventive and therapeutic strategies. Here, we review the cellular and molecular mechanisms underlying gut microbiota-mediated impact on liver disease. We also summarize the advancement of gut microbiota-based therapeutic strategies in the control of liver diseases.
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Affiliation(s)
- Xiaoqiang Qi
- Department of Surgery, University of Missouri, Columbia, MO 65212, United States
- Ellis Fischel Cancer Center, University of Missouri, Columbia, MO 65212, United States
- VA Hospital, Harry S Truman Memorial VA Hospital, Columbia, MO 65201, United States
| | - Ming Yang
- Department of Surgery, University of Missouri, Columbia, MO 65212, United States
- Ellis Fischel Cancer Center, University of Missouri, Columbia, MO 65212, United States
- VA Hospital, Harry S Truman Memorial VA Hospital, Columbia, MO 65201, United States
| | - Joseph Stenberg
- Department of Surgery, University of Missouri, Columbia, MO 65212, United States
| | - Rahul Dey
- Department of Surgery, University of Missouri, Columbia, MO 65212, United States
| | - Leslie Fogwe
- Department of Surgery, University of Missouri, Columbia, MO 65212, United States
| | | | - Eric T Kimchi
- Department of Surgery, University of Missouri, Columbia, MO 65212, United States
- Ellis Fischel Cancer Center, University of Missouri, Columbia, MO 65212, United States
- VA Hospital, Harry S Truman Memorial VA Hospital, Columbia, MO 65201, United States
| | - Kevin F Staveley-O'Carroll
- Department of Surgery, University of Missouri, Columbia, MO 65212, United States
- Ellis Fischel Cancer Center, University of Missouri, Columbia, MO 65212, United States
- VA Hospital, Harry S Truman Memorial VA Hospital, Columbia, MO 65201, United States
| | - Guangfu Li
- Department of Surgery, University of Missouri, Columbia, MO 65212, United States
- Ellis Fischel Cancer Center, University of Missouri, Columbia, MO 65212, United States
- VA Hospital, Harry S Truman Memorial VA Hospital, Columbia, MO 65201, United States
- Department of Molecular Microbiology and Immunology, University of Missouri, Columbia, MO 65212, United States
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28
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Lei Y, Yang T, Shan A, Di W, Dai M, Nan J, Liu D, Cao Y, Jiang X. Altered Inflammatory Pathway but Unaffected Liver Fibrosis in Mouse Models of Nonalcoholic Steatohepatitis Involving Interleukin-1 Receptor-Associated Kinase 1 Knockout. Med Sci Monit 2020; 26:e926187. [PMID: 33203828 PMCID: PMC7682117 DOI: 10.12659/msm.926187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Interleukin-1 receptor-associated kinases (IRAKs) are crucial mediators in the signaling pathways of Toll-like receptors (TLRs)/IL1Rs. Targeting the IRAK4/IRAK1/TRAF6 axis and its associated pathway has therapeutic benefits in liver fibrosis. However, the function of IRAK1 itself in the development of liver fibrosis remains unknown. MATERIAL AND METHODS Irak1 global knockout (KO) mice were generated to study the functional role of Irak1 in liver fibrosis. Male Irak1 knockout and control mice were challenged with chronic carbon tetrachloride (CCl4) or fed a methionine- and choline-deficient diet (MCDD) to generate models of nonalcoholic steatohepatitis (NASH). Liver inflammation and collagen deposition were assessed by histological examination, quantitative real-time PCR (qRT-PCR), and western blotting of hepatic tissues. RESULTS The mRNA expression of the downstream inflammatory gene Il1b was significantly lower in Irak1-KO than in control mice. Irak1 ablation had little effect on inflammatory cell infiltration into livers of mice with NASH. Collagen deposition and the expression of genes related to fibrogenesis were similar in the livers of Irak1-KO and control mice exposed to CCl4 and MCDD. The loss of Irak1 did not affect lipid or glucose metabolism in these experimental models of steatohepatitis. CONCLUSIONS Irak1 knockout reduced the expression of inflammatory genes but had no effect on hepatic fibrogenesis. The Irak1-related pathway may regulate liver fibrosis via other pathways or be compensated for by other factors.
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Affiliation(s)
- Ying Lei
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission, Shanghai Key Laboratory for Endocrine Tumors, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
| | - Tianxiao Yang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission, Shanghai Key Laboratory for Endocrine Tumors, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
| | - Aijing Shan
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission, Shanghai Key Laboratory for Endocrine Tumors, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
| | - Wei Di
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission, Shanghai Key Laboratory for Endocrine Tumors, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
| | - Mengyao Dai
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission, Shanghai Key Laboratory for Endocrine Tumors, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
| | - Jingminjie Nan
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission, Shanghai Key Laboratory for Endocrine Tumors, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
| | - Dongxue Liu
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission, Shanghai Key Laboratory for Endocrine Tumors, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
| | - Yanan Cao
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission, Shanghai Key Laboratory for Endocrine Tumors, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
| | - Xiuli Jiang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, National Clinical Research Centre for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission, Shanghai Key Laboratory for Endocrine Tumors, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (mainland)
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29
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Zheng Q, Martin RC, Shi X, Pandit H, Yu Y, Liu X, Guo W, Tan M, Bai O, Meng X, Li Y. Lack of FGF21 promotes NASH-HCC transition via hepatocyte-TLR4-IL-17A signaling. Am J Cancer Res 2020; 10:9923-9936. [PMID: 32929325 PMCID: PMC7481424 DOI: 10.7150/thno.45988] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 07/29/2020] [Indexed: 12/19/2022] Open
Abstract
Rationale: Hepatocellular carcinoma (HCC) has been increasingly recognized in nonalcoholic steatohepatitis (NASH) patients. Fibroblast growth factor 21 (FGF21) is reported to prevent NASH and delay HCC development. In this study, the effects of FGF21 on NASH progression and NASH-HCC transition and the potential mechanism(s) were investigated. Methods: NASH models and NASH-HCC models were established in FGF21Knockout (KO) mice to evaluate NASH-HCC transition. IL-17A signaling was investigated in the isolated hepatic parenchymal cells, splenocytes, and hepatocyte and HCC cell lines. Results: Lack of FGF21 caused significant up-regulation of the hepatocyte-derived IL-17A via Toll-like receptor 4 (TLR4) and NF-κB signaling. Restoration of FGF21 alleviated the high NAFLD activity score (NAS) and attenuated the TLR4-triggered hepatocyte-IL-17A expression. The HCC nodule number and tumor size were significantly alleviated by treatments of anti-IL-17A antibody. Conclusion: This study revealed a novel anti-inflammatory mechanism of FGF21 via inhibiting the hepatocyte-TLR4-IL-17A signaling in NASH-HCC models. The negative feedback loop on the hepatocyte-TLR4-IL-17A axis could be a potential anti-carcinogenetic mechanism for FGF21 to prevent NASH-HCC transition.
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Suriguga S, Luangmonkong T, Mutsaers HAM, Groothuis GMM, Olinga P. Host microbiota dictates the proinflammatory impact of LPS in the murine liver. Toxicol In Vitro 2020; 67:104920. [PMID: 32590029 DOI: 10.1016/j.tiv.2020.104920] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 06/04/2020] [Accepted: 06/17/2020] [Indexed: 02/07/2023]
Abstract
Gut microbiota can impact liver disease development via the gut-liver axis. Liver inflammation is a shared pathological event in various liver diseases and gut microbiota might influence this pathological process. In this study, we studied the influence of gut microbiota on the inflammatory response of the liver to lipopolysaccharide (LPS). The inflammatory response to LPS (1-10 μg/ml) of livers of specific-pathogen-free (SPF) or germ-free (GF) mice was evaluated ex vivo, using precision-cut liver slices (PCLS). LPS induced a more pronounced inflammatory response in GF PCLS than in SPF PCLS. Baseline TNF-α gene expression was significantly higher in GF slices as compared to SPF slices. LPS treatment induced TNF-α, IL-1β, IL-6 and iNOS expression in both SPF and GF PCLS, but the increase was more intense in GF slices. The anti-inflammatory markers SOCS3 and IRAK-M gene expression was significantly higher in GF PCLS than SPF PCLS at 24h with 1 µg/ml LPS treatment, and IL-10 was not differently expressed in GF PCLS than SPF PCLS. In addition, TLR-4 mRNA, but not protein, at basal level was higher in GF slices than in SPF slices. Taken together, this study shows that, in mice, the host microbiota attenuates the pro-inflammatory impact of LPS in the liver, indicating a positive role of the gut microbiota on the immune homeostasis of the liver.
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Affiliation(s)
- Su Suriguga
- The State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China; Division of Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, University of Groningen, Groningen, the Netherlands; Division of Pharmacokinetics, Toxicology and Targeting, Department of Pharmacy, University of Groningen, Groningen, the Netherlands
| | - Theerut Luangmonkong
- Division of Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, University of Groningen, Groningen, the Netherlands; Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Henricus A M Mutsaers
- Division of Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, University of Groningen, Groningen, the Netherlands; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Geny M M Groothuis
- Division of Pharmacokinetics, Toxicology and Targeting, Department of Pharmacy, University of Groningen, Groningen, the Netherlands
| | - Peter Olinga
- Division of Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, University of Groningen, Groningen, the Netherlands.
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Fischer L, Lucendo-Villarin B, Hay DC, O’Farrelly C. Human PSC-Derived Hepatocytes Express Low Levels of Viral Pathogen Recognition Receptors, but Are Capable of Mounting an Effective Innate Immune Response. Int J Mol Sci 2020; 21:ijms21113831. [PMID: 32481600 PMCID: PMC7312201 DOI: 10.3390/ijms21113831] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 04/30/2020] [Accepted: 05/24/2020] [Indexed: 01/19/2023] Open
Abstract
Hepatocytes are key players in the innate immune response to liver pathogens but are challenging to study because of inaccessibility and a short half-life. Recent advances in in vitro differentiation of hepatocyte-like cells (HLCs) facilitated studies of hepatocyte-pathogen interactions. Here, we aimed to define the anti-viral innate immune potential of human HLCs with a focus on toll-like receptor (TLR)-expression and the presence of a metabolic switch. We analysed cytoplasmic pattern recognition receptor (PRR)- and endosomal TLR-expression and activity and adaptation of HLCs to an inflammatory environment. We found that transcript levels of retinoic acid inducible gene I (RIG-I), melanoma differentiation antigen 5 (MDA5), and TLR3 became downregulated during differentiation, indicating the acquisition of a more tolerogenic phenotype, as expected in healthy hepatocytes. HLCs responded to activation of RIG-I by producing interferons (IFNs) and IFN-stimulated genes. Despite low-level expression of TLR3, receptor expression was upregulated in an inflammatory environment. TLR3 signalling induced expression of proinflammatory cytokines at the gene level, indicating that several PRRs need to interact for successful innate immune activation. The inflammatory responsiveness of HLCs was accompanied by the downregulation of cytochrome P450 3A and 1A2 activity and decreased serum protein production, showing that the metabolic switch seen in primary hepatocytes during anti-viral responses is also present in HLCs.
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Affiliation(s)
- Lena Fischer
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland;
| | | | - David C. Hay
- Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK;
- Correspondence: (D.C.H.); (C.O.)
| | - Cliona O’Farrelly
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland;
- School of Medicine, Trinity Biomedical Science Institute, Trinity College Dublin, Dublin 2, Ireland
- Correspondence: (D.C.H.); (C.O.)
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Mohamed FEZA, Hammad S, Luong TV, Dewidar B, Al-Jehani R, Davies N, Dooley S, Jalan R. Expression of TLR-2 in hepatocellular carcinoma is associated with tumour proliferation, angiogenesis and Caspase-3 expression. Pathol Res Pract 2020; 216:152980. [PMID: 32703481 DOI: 10.1016/j.prp.2020.152980] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 03/25/2020] [Accepted: 04/13/2020] [Indexed: 02/07/2023]
Abstract
AIMS Unlike other Toll-like receptors (TLRs), the role of toll like receptor 2 (TLR-2) in the pathogenesis of chronic liver disease and hepatocellular carcinoma (HCC) is not well studied. We, therefore, set out to investigate the expression of TLR-2 in different chronic liver disease states along with other markers of cell death, cellular proliferation and tissue vascularisation METHODS AND RESULTS: Immunohistochemistry was performed on liver tissue microarrays comprising hepatitis, cirrhosis and HCC patient samples using antibodies against TLR-2, Ki-67, Caspase-3 and VEGF. This was done in order to characterise receptor expression and translocation, apoptosis, cell proliferation and vascularisation. Cytoplasmic TLR-2 expression was found to be weak in 5/8 normal liver cases, 10/19 hepatitis cases and 8/21 cirrhosis patients. Moderate to strong TLR-2 expression was observed in some cases of hepatitis and cirrhosis. Both, nuclear and cytoplasmic TLR-2 expression was present in HCC with weak intensity in 11/41 cases, and moderate to strong staining in 19/41 cases. Eleven HCC cases were TLR-2 negative. Surprisingly, both cytoplasmic and nuclear TLR-2 expression in HCC were found to significantly correlate with proliferative index (r = 0.24 and 0.37), Caspase-3 expression (r = 0.27 and 0.38) and vascularisation (r = 0.56 and 0.23). Further, nuclear TLR-2 localisation was predominant in HCC, whereas cytoplasmic expression was more prevalent in hepatitis and cirrhosis. Functionally, treatment of HUH7 HCC cells with a TLR-2 agonist induced the expression of cellular proliferation and vascularisation markers CD34 and VEGF. CONCLUSIONS Our results demonstrate a positive correlation between the expression of TLR-2 and other markers of proliferation and vascularisation in HCC which suggests a possible role for TLR-2 in HCC pathogenesis.
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Affiliation(s)
- Fatma El-Zahraa Ammar Mohamed
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany; Department of Pathology, Faculty of Medicine, Minia University, Minia, Egypt.
| | - Seddik Hammad
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany; Department of Forensic Medicine and Veterinary Toxicology, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt
| | - Tu Vinh Luong
- Department of Cellular Pathology, Royal Free London NHS Foundation Trust, London, UK
| | - Bedair Dewidar
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Rajai Al-Jehani
- Institute for Liver and Digestive Health, Royal Free London NHS Foundation Trust, London, UK
| | - Nathan Davies
- UCL Institute for Liver and Digestive Health, Royal Free Hospital, London, UK
| | - Steven Dooley
- Molecular Hepatology Section, Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Rajiv Jalan
- UCL Institute for Liver and Digestive Health, Royal Free Hospital, London, UK
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Zhang C, Jia Y, Liu B, Wang G, Zhang Y. TLR4 knockout upregulates the expression of Mfn2 and PGC-1α in a high-fat diet and ischemia-reperfusion mice model of liver injury. Life Sci 2020; 254:117762. [PMID: 32437795 DOI: 10.1016/j.lfs.2020.117762] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 05/01/2020] [Accepted: 05/05/2020] [Indexed: 12/30/2022]
Abstract
AIMS Patients with nonalcoholic fatty liver disease (NAFLD) have less tolerance to ischemia-reperfusion injury (IRI) of the liver than those with the healthy liver; hence have a higher incidence of severe complications after surgery. This study aimed to investigate the dynamics of the liver and mitochondrial damage and the impact of TLR4 knockout (TLR4KO) on Mfn2 expression in the composite model of NAFLD and IRI. MAIN METHODS We performed high-fat diet (HFD) feeding and ischemia reperfusion (IR) on wild type (WT) and TLR4 knockout TLR4KO mice. KEY FINDINGS The degree of structural and functional injuries to the liver and mitochondria (NAFLD and IRI) is greater than that caused by a single factor (NAFLD or IRI) or a simple superposition of both. The IL-6 and TNF-α expressions were significantly suppressed (P < .05), while PGC-1α and Mfn2 expressions were up-regulated considerably (P < .05) after TLR4KO. Furthermore, mitochondrial fusion increased, while ATP consumption and ROS production decreased significantly after TLR4KO (P < .05). The degree of reduction of compound injury by TLR4KO is more significant than the reduction degree of single factor injury. Also, TNF-α and IL-6 levels can be used predictive markers for mitochondrial damage and liver tolerance to NAFLD and IRI. SIGNIFICANCE TLR4KO upregulates the expression of Mfn2 and PGC-1α in the composite model of NAFLD and IRI. This pathway may be related to IL-6 and TNF-α. This evidence provides theoretical and experimental basis for the subsequent Toll-like receptor 4 (TLR4) receptor targeted therapy.
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Affiliation(s)
- Chaoyang Zhang
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Yinzhao Jia
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Bo Liu
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, Wenzhou Medical University, Wenzhou, China
| | - Guoliang Wang
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Yong Zhang
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China.
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Hou H, Yang W, Bao S, Cao Y. Epigallocatechin Gallate Suppresses Inflammatory Responses by Inhibiting Toll-like Receptor 4 Signaling and Alleviates Insulin Resistance in the Livers of High-fat-diet Rats. J Oleo Sci 2020; 69:479-486. [PMID: 32281563 DOI: 10.5650/jos.ess19303] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
EGCG is a major pharmacological compound in green tea. Nonalcoholic fatty liver disease (NAFLD) is one of the most common liver diseases worldwide. Inflammation and insulin resistance are involved in the development of the disease. In this study, we investigated the beneficial effect of EGCG on the liver tissue of NAFLD rats induced by a high-fat diet and its underlying mechanism. Thirty Sprague-Dawley rats received a normal diet, a HFD and a HFD+EGCG. The expression levels of inflammatory signaling pathway genes (e.g., TLR4, TRAF6, IKKβ, NF-κB, TNF-α) and insulin signaling transduction pathway genes (e.g., PI3K, AKT, IRS-1, IRS-2) were detected in the liver. We observed that EGCG decreased the triglyceride (TG) concentration in rat livers and suppressed TLR4, TRAF6, IKKβ, p-IKKβ, p-NF-κB, and TNF-α levels compared with those in the HFD group, whereas PI3K, AKT, IRS-1, and IRS-2 indicators were improved. EGCG improves obesity-associated subacute hepatic inflammation states, probably through the TLR4 signaling pathway. Furthermore, EGCG also alleviated hepatic insulin resistance. These data indicate that EGCG improves NAFLD from two ways: inhibition of inflammation and improvement of insulin resistance in liver tissues.
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Affiliation(s)
- Huimin Hou
- Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Affiliated Hospital of China Medical University, China Medical University
| | - Wanli Yang
- Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Affiliated Hospital of China Medical University, China Medical University
| | - Suqing Bao
- Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Affiliated Hospital of China Medical University, China Medical University
| | - Yanli Cao
- Department of Endocrinology and Metabolism, Institute of Endocrinology, Liaoning Provincial Key Laboratory of Endocrine Diseases, The First Affiliated Hospital of China Medical University, China Medical University
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Zhang J, Lin S, Jiang D, Li M, Chen Y, Li J, Fan J. Chronic hepatitis B and non-alcoholic fatty liver disease: Conspirators or competitors? Liver Int 2020; 40:496-508. [PMID: 31903714 DOI: 10.1111/liv.14369] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/16/2019] [Accepted: 01/02/2020] [Indexed: 02/06/2023]
Abstract
Despite the widespread use of vaccines and antiviral drugs, approximately 350-400 million patients with chronic hepatitis B (CHB) remain worldwide, who carry high risk of cirrhosis and liver carcinoma. Moreover, owing to improvements in global living standards and lifestyle changes, non-alcoholic fatty liver disease (NAFLD) has become the most common chronic liver disease. Coexistence of NAFLD and CHB is commonly observed, especially in Asian CHB populations; however, little is known regarding the relationship between these two diseases as comorbidities. In this review, we summarize recent advances in clinical and basic researches related to the underlying mutual interactions, as well as potential animal models to facilitate further investigation.
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Affiliation(s)
- Jianbin Zhang
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Shuangzhe Lin
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Daixi Jiang
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Mengting Li
- Department of Gastroenterology, Yinzhou People's Hospital, Zhejiang, China
| | - Yuanwen Chen
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jun Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiangao Fan
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Baicalin and its nanoliposomes ameliorates nonalcoholic fatty liver disease via suppression of TLR4 signaling cascade in mice. Int Immunopharmacol 2020; 80:106208. [PMID: 31955065 DOI: 10.1016/j.intimp.2020.106208] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/07/2020] [Accepted: 01/07/2020] [Indexed: 02/07/2023]
Abstract
As a natural flavonoid compound, baicalin(BA)has been reported to exhibit hepatoprotective and anti-inflammatory properties. However, the characteristic of poor solubility and low bioavailability greatly limits its application. In addition, the effects and underlying mechanisms of BA in nonalcoholic fatty liver disease (NAFLD) remain elusive. In this study, Methionine and choline deficient diet (MCD)-induced NAFLD mice were treated with baicalin or baicalin-loaded nanoliposomes (BA-NL), then hepatic histopathological changes, biochemical parameters and inflammatory molecules were observed. We found that mice in MCD group showed significant increases in plasma transaminase, hepatocyte apoptosis, hepatic lipid accumulation, liver fibrosis, and infiltration of neutrophils and macrophages compared with control group, however, BA and BA-NL markedly attenuated MCD-induced the above changes. Besides, further analysis indicated that BA and BA-NL also inhibited the up-regulation of toll-like receptor 4 (TLR4) signal and the production of inflammatory mediators in MCD mice. Importantly, BA-NL was found to be more effective than baicalin on MCD-induced NAFLD in mice. These data suggested that BA and its nanoliposomes BA-NL could effectively protect mice against MCD-induced NAFLD, which might be mediated through inhibiting TLR4 signaling cascade.
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Jayakumar S, Loomba R. Review article: emerging role of the gut microbiome in the progression of nonalcoholic fatty liver disease and potential therapeutic implications. Aliment Pharmacol Ther 2019; 50:144-158. [PMID: 31149745 PMCID: PMC6771496 DOI: 10.1111/apt.15314] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 10/24/2018] [Accepted: 04/30/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Nonalcoholic fatty liver disease (NAFLD) is a prevalent disorder associated with obesity and diabetes. Few treatment options are effective for patients with NAFLD, but connections between the gut microbiome and NAFLD and NAFLD-associated conditions suggest that modulation of the gut microbiota could be a novel therapeutic option. AIM To examine the effect of the gut microbiota on pathophysiologic causes of NAFLD and assess the potential of microbiota-targeting therapies for NAFLD. METHODS A PubMed search of the literature was performed; relevant articles were included. RESULTS The composition of bacteria in the gastrointestinal tract can enhance fat deposition, modulate energy metabolism and alter inflammatory processes. Emerging evidence suggests a role for the gut microbiome in obesity and metabolic syndrome. NAFLD is often considered the hepatic manifestation of metabolic syndrome, and there has been tremendous progress in understanding the association of gut microbiome composition with NAFLD disease severity. We discuss the role of the gut microbiome in NAFLD pathophysiology and whether the microbiome composition can differentiate the two categories of NAFLD: nonalcoholic fatty liver (NAFL, the non-progressive form) vs nonalcoholic steatohepatitis (NASH, the progressive form). The association between gut microbiome and fibrosis progression in NAFLD is also discussed. Finally, we review whether modulation of the gut microbiome plays a role in improving treatment outcomes for patients with NAFLD. CONCLUSIONS Multiple pathophysiologic pathways connect the gut microbiome with the pathophysiology of NAFLD. Therefore, therapeutics that effectively target the gut microbiome may be beneficial for the treatment of patients with NAFLD.
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Affiliation(s)
- Saumya Jayakumar
- Division of Gastroenterology and Hepatology, Department of MedicineNAFLD Research Center, University of California at San DiegoLa JollaCalifornia
| | - Rohit Loomba
- Division of Gastroenterology and Hepatology, Department of MedicineNAFLD Research Center, University of California at San DiegoLa JollaCalifornia,Division of Epidemiology, Department of Family Medicine and Public HealthUniversity of California at San DiegoLa JollaCalifornia
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Caron A, Briscoe DM, Richard D, Laplante M. DEPTOR at the Nexus of Cancer, Metabolism, and Immunity. Physiol Rev 2018; 98:1765-1803. [PMID: 29897294 DOI: 10.1152/physrev.00064.2017] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
DEP domain-containing mechanistic target of rapamycin (mTOR)-interacting protein (DEPTOR) is an important modulator of mTOR, a kinase at the center of two important protein complexes named mTORC1 and mTORC2. These highly studied complexes play essential roles in regulating growth, metabolism, and immunity in response to mitogens, nutrients, and cytokines. Defects in mTOR signaling have been associated with the development of many diseases, including cancer and diabetes, and approaches aiming at modulating mTOR activity are envisioned as an attractive strategy to improve human health. DEPTOR interaction with mTOR represses its kinase activity and rewires the mTOR signaling pathway. Over the last years, several studies have revealed key roles for DEPTOR in numerous biological and pathological processes. Here, we provide the current state of the knowledge regarding the cellular and physiological functions of DEPTOR by focusing on its impact on the mTOR pathway and its role in promoting health and disease.
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Affiliation(s)
- Alexandre Caron
- Department of Internal Medicine, Division of Hypothalamic Research, The University of Texas Southwestern Medical Center , Dallas, Texas ; Transplant Research Program, Boston Children's Hospital , Boston, Massachusetts ; Department of Pediatrics, Harvard Medical School , Boston, Massachusetts ; Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (CRIUCPQ), Faculté de Médecine, Université Laval , Québec , Canada ; and Centre de Recherche sur le Cancer de l'Université Laval, Université Laval , Québec , Canada
| | - David M Briscoe
- Department of Internal Medicine, Division of Hypothalamic Research, The University of Texas Southwestern Medical Center , Dallas, Texas ; Transplant Research Program, Boston Children's Hospital , Boston, Massachusetts ; Department of Pediatrics, Harvard Medical School , Boston, Massachusetts ; Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (CRIUCPQ), Faculté de Médecine, Université Laval , Québec , Canada ; and Centre de Recherche sur le Cancer de l'Université Laval, Université Laval , Québec , Canada
| | - Denis Richard
- Department of Internal Medicine, Division of Hypothalamic Research, The University of Texas Southwestern Medical Center , Dallas, Texas ; Transplant Research Program, Boston Children's Hospital , Boston, Massachusetts ; Department of Pediatrics, Harvard Medical School , Boston, Massachusetts ; Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (CRIUCPQ), Faculté de Médecine, Université Laval , Québec , Canada ; and Centre de Recherche sur le Cancer de l'Université Laval, Université Laval , Québec , Canada
| | - Mathieu Laplante
- Department of Internal Medicine, Division of Hypothalamic Research, The University of Texas Southwestern Medical Center , Dallas, Texas ; Transplant Research Program, Boston Children's Hospital , Boston, Massachusetts ; Department of Pediatrics, Harvard Medical School , Boston, Massachusetts ; Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec (CRIUCPQ), Faculté de Médecine, Université Laval , Québec , Canada ; and Centre de Recherche sur le Cancer de l'Université Laval, Université Laval , Québec , Canada
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Han LP, Sun B, Li CJ, Xie Y, Chen LM. Effect of celastrol on toll‑like receptor 4‑mediated inflammatory response in free fatty acid‑induced HepG2 cells. Int J Mol Med 2018; 42:2053-2061. [PMID: 30015859 PMCID: PMC6108865 DOI: 10.3892/ijmm.2018.3775] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 07/10/2018] [Indexed: 01/11/2023] Open
Abstract
Toll-like receptor 4 (TLR4)-mediated immune and inflammatory signaling serves a pivotal role in the pathogenesis of nonalcoholic fatty liver disease (NAFLD). Our previous study demonstrated that celastrol treatment was able to improve hepatic steatosis and inhibit the TLR4 signaling cascade pathway in type 2 diabetic rats. The present study aimed to investigate the effects of celastrol on triglyceride accumulation and inflammation in steatotic HepG2 cells, and the possible mechanisms responsible for the regulation of cellular responses following TLR4 gene knockdown by small interfering RNA (siRNA) in vitro. A cell model of hepatic steatosis was prepared by exposing the HepG2 cells to free fatty acid (FFA) in the absence or presence of celastrol. Intracellular triglycerides were visualized by Oil red O staining, and the TLR4/myeloid differentiation primary response 88 (MyD88)/nuclear factor-κB (NF-κB) signaling cascade pathway were investigated. To directly elucidate whether TLR4 was the blocking target of celastrol upon FFA exposure, the cellular response to inflammation was determined upon transfection with TLR4 siRNA. The results revealed that celastrol significantly reduced triglyceride accumulation in the steatotic HepG2 cells, and downregulated the expression levels of TLR4, MyD88 and phospho-NF-κBp65, as well as of the downstream inflammatory cytokines interleukin-1β and tumor necrosis factor α. Knockdown of TLR4 also alleviated FFA-induced inflammatory response. In addition, co-treatment with TLR4 siRNA and celastrol further attenuated the expression of inflammatory mediators. These results suggest that celastrol exerts its protective effect partly via inhibiting the TLR4-mediated immune and inflammatory response in steatotic HepG2 cells.
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Affiliation(s)
- Li-Ping Han
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Bei Sun
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Chun-Jun Li
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Yun Xie
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Li-Ming Chen
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, P.R. China
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Schuster S, Cabrera D, Arrese M, Feldstein AE. Triggering and resolution of inflammation in NASH. Nat Rev Gastroenterol Hepatol 2018; 15:349-364. [PMID: 29740166 DOI: 10.1038/s41575-018-0009-6] [Citation(s) in RCA: 524] [Impact Index Per Article: 87.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Nonalcoholic steatohepatitis (NASH) is considered the progressive form of nonalcoholic fatty liver disease (NAFLD) and is characterized by liver steatosis, inflammation, hepatocellular injury and different degrees of fibrosis. A central issue in this field relates to the identification of those factors that trigger inflammation, thus fuelling the transition from nonalcoholic fatty liver to NASH. These triggers of liver inflammation might have their origins outside the liver (such as in adipose tissue or the gut) as well as inside the organ (for instance, lipotoxicity, innate immune responses, cell death pathways, mitochondrial dysfunction and endoplasmic reticulum stress), both of which contribute to NASH development. In this Review, we summarize the currently available information on the key upstream triggers of inflammation in NASH. We further delineate the mechanisms by which liver inflammation is resolved and the implications of a defective pro-resolution process. A better knowledge of these mechanisms should help to design targeted therapies able to halt or reverse disease progression.
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Affiliation(s)
- Susanne Schuster
- Department of Pediatrics, University of California, San Diego, CA, USA
| | - Daniel Cabrera
- Department of Gastroenterology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.,Departamento de Ciencias Químicas y Biológicas, Facultad de Salud, Universidad Bernardo O Higgins, Santiago, Chile
| | - Marco Arrese
- Department of Gastroenterology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.,Centre for Aging and Regeneration (CARE), Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ariel E Feldstein
- Department of Pediatrics, University of California, San Diego, CA, USA.
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Zhang Y, Jin Q, Li X, Jiang M, Cui BW, Xia KL, Wu YL, Lian LH, Nan JX. Amelioration of Alcoholic Liver Steatosis by Dihydroquercetin through the Modulation of AMPK-Dependent Lipogenesis Mediated by P2X7R-NLRP3-Inflammasome Activation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:4862-4871. [PMID: 29706079 DOI: 10.1021/acs.jafc.8b00944] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Dihydroquercetin (TAX) is the most abundant dihydroflavone found in onions, milk thistle, and Douglas fir bark. We investigated whether TAX could inhibit lipid accumulation in alcoholic liver steatosis in vivo and in vitro. An in vivo model was established by intragastrically treating mice with ethanol, and an in vitro model was created by treating HepG2 cells with ethanol. TAX regulated SREBP1 and ACC expression by elevating LKB1 and AMPK phosphorylation. Also, TAX upregulated SIRT1 expression, which was suppressed by ethanol intake. Decreased expression of P2X7R and NLRP3 and suppressed cleavage of caspase-1 by TAX resulted in the inhibition of IL-1β production and release. Additionally, TAX reduced lipogenesis and promoted lipid oxidation via the regulation of AMPK and ACC in ethanol-treated steatotic HepG2 cells. TAX downregulated IL-1β cleavage responses to LPS and ATP stimulation in HepG2 cells. P2X7R deficiency attenuated lipid accumulation, characterized by increased AMPK activity and decreased SREBP1 expression in ethanol-treated HepG2 cells. Our data showed that TAX exhibited the ability to inhibit lipogenesis and a hepatoprotective capacity, indicating that TAX has therapeutic potential for preventing alcoholic liver steatosis.
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Affiliation(s)
- Yu Zhang
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy , Yanbian University , Yanji , Jilin Province 133002 , China
| | - Quan Jin
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy , Yanbian University , Yanji , Jilin Province 133002 , China
| | - Xia Li
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy , Yanbian University , Yanji , Jilin Province 133002 , China
| | - Min Jiang
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy , Yanbian University , Yanji , Jilin Province 133002 , China
| | - Ben-Wen Cui
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy , Yanbian University , Yanji , Jilin Province 133002 , China
| | - Kai-Li Xia
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy , Yanbian University , Yanji , Jilin Province 133002 , China
| | - Yan-Ling Wu
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy , Yanbian University , Yanji , Jilin Province 133002 , China
| | - Li-Hua Lian
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy , Yanbian University , Yanji , Jilin Province 133002 , China
| | - Ji-Xing Nan
- Key Laboratory for Natural Resource of Changbai Mountain & Functional Molecules, Ministry of Education, College of Pharmacy , Yanbian University , Yanji , Jilin Province 133002 , China
- Clinical Research Center , Yanbian University Hospital , Yanji , Jilin Province 133002 , China
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The potential role of toll-like receptor 4 Asp299Gly polymorphism and its association with recurrent cystic echinococcosis in postoperative patients. Parasitol Res 2018; 117:1717-1727. [PMID: 29602972 DOI: 10.1007/s00436-018-5850-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 03/23/2018] [Indexed: 02/06/2023]
Abstract
The study of pathogenesis mechanisms of larval stages in the Taeniidae has recently focused on host genetic factors, particularly toll-like receptor (TLR) variations. However, the potential role of TLR4 polymorphism in hydatidosis has not yet been sufficiently elucidated in postoperative patients. In this case-control investigation, 80 patients from Iran, including 40 with acute hydatidosis (AH) and 40 with recurrent hydatidosis (RH), and 80 ethnically matched controls were evaluated from February 2015 to February 2017. Hydatidosis patients were confirmed using radiological, immunological, and histopathological examinations. Genotyping of Asp299Gly and Thr399Ile of TLR4 single-nucleotide polymorphisms was determined by restriction fragment length polymorphism, sequencing, and phylogenetic strategies. The heterozygous mutant-type TLR4 Asp299Gly genotype indicated a tendency to be associated with the occurrence of RH (P = 0.060) and conferred a 3-fold risk for susceptibility. There was no difference in genotype frequency of Asp299Gly between patients with AH and healthy controls (P = 0.42; OR, 1.82; 95% CI, 0.11-30.1%). Interestingly, a frequency of the G allele (12%: Gly) was observed to be a risk factor for susceptibility to RH patients (P = 0.050; OR, 7.08; 95% CI, 0.97-51.5%). A relative genetic variability of TLR4 Asp299Gly was found in RH patients (haplotype diversity: 0.700) compared to AH patients and healthy controls (Hd: 0.000). The Asp299Gly genotype was dominantly identified in patients with hepatic hydatid cysts. The TLR4 Thr399Ile codon was not detected except in a patient with a pulmonary hydatid cyst. The current findings enhance our knowledge regarding the TLR4 Asp299Gly polymorphism potentially leading to the development of RH, by skewing the immune system towards a Th2 response. Identification of the Asp299Gly codon may be a diagnostic hallmark in RH patients who have undergone unsuccessful postoperative intervention. However, further studies with a higher case number are needed on ethnic population from various geographic regions, in order to confirm this hypothesis.
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Vitamin A-coupled liposomes carrying TLR4-silencing shRNA induce apoptosis of pancreatic stellate cells and resolution of pancreatic fibrosis. J Mol Med (Berl) 2018; 96:445-458. [PMID: 29589070 DOI: 10.1007/s00109-018-1629-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 02/05/2018] [Accepted: 02/12/2018] [Indexed: 02/05/2023]
Abstract
Chronic pancreatitis leads to irreversible damage in pancreatic endocrine and exocrine functions. However, there is no clinically available antifibrotic drug. Pancreatic stellate cells (PSCs) can be activated by Toll-like receptor 4 (TLR4) responses to its ligands and they contribute to the formation of pancreatic fibrosis. Silencing the expression of TLR4 in PSCs by RNAi may be a novel therapeutic strategy for the treatment of pancreatic fibrosis. In addition, PSCs have a remarkable capacity for vitamin A uptake most likely through cellular retinol binding protein (CRBP). In our study, to ensure the efficient delivery of RNAi therapeutic agents to PSCs, VitA-coupled liposomes (VA-lips) were used as drug carriers to deliver plasmids expressing TLR4-specific short hairpin RNA (shRNA) to treat pancreatic fibrosis. Our study demonstrated that silencing the expression of TLR4 could induce mitochondrial apoptosis in aPSCs and might be an effective therapeutic strategy for the treatment of pancreatic fibrosis. KEY MESSAGES VA-lip-shRNA-TLR4 recovers pancreatic tissue damage. VA-lip-shRNA-TLR4 resolution of pancreatic fibrosis. VA-lip-shRNA-TLR4 accelerates ECM degradation and inhibits ECM synthesis. Silencing TLR4 induces aPSCs mitochondrial apoptosis. Silencing TLR4 inhibits the activation of NF-κB.
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Wen Z, Ji X, Tang J, Lin G, Xiao L, Liang C, Wang M, Su F, Ferrandon D, Li Z. Positive Feedback Regulation between Transglutaminase 2 and Toll-Like Receptor 4 Signaling in Hepatic Stellate Cells Correlates with Liver Fibrosis Post Schistosoma japonicum Infection. Front Immunol 2017; 8:1808. [PMID: 29321784 PMCID: PMC5733538 DOI: 10.3389/fimmu.2017.01808] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Accepted: 11/30/2017] [Indexed: 12/12/2022] Open
Abstract
Liver fibrosis induced by Schistosoma japonicum (Sj) infection is characterized by the accumulation of extracellular matrix (ECM). The activated and differentiated hepatic stellate cells (HSCs) are the predominant ECM-producing cell type in the liver. Toll-like receptor (TLR) 4 pathway activation plays a key role in mice liver fibrosis models induced by alcohol, biliary ligation, and carbon tetrachloride 4. In this work, we found that TLR4 pathway activation correlated with the severity of liver fibrosis post Sj infection. The TLR4 receptor inhibitor TAK242 reduced the extent of liver fibrosis. The increased expression of TLR4, α-smooth muscle actin (α-SMA), and cytoglobin was observed in the HSCs of mouse liver after Sj infection. In response to stimulation with either lipopolysaccharide or Sj's soluble egg antigen (SEA), high levels of TLR4 and α-SMA were induced in HSCs and were inhibited by TAK242 treatment. In previous work, we had reported that a high level of transglutaminase 2 (TGM2) is crucial for liver fibrosis post Sj infection. Herein, we found that TLR4 signaling also controlled Tgm2 expression. Inhibition of TGM2 activity by cystamine (CTM) in Sj-infected mice or in HSCs induced with all-trans-retinoic acid (ATRA) stimulation led to a lowered activation of TLR4 signaling and a reduced α-SMA expression. These results were confirmed by downregulating the Tgm2 gene by specific siRNA. These observations implied the presence of a positive feedback regulation between TGM2 and TLR4 signaling in HSCs that correlated with liver fibrosis post Sj infection. This novel connection between TGM2 and TLR4 pathway activation in liver fibrosis induced by Sj infection enhances our understanding of liver diseases.
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Affiliation(s)
- Zhencheng Wen
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China
| | - Xiaofang Ji
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China
| | - Juanjuan Tang
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China
| | - Guiying Lin
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China
| | - Linzhuo Xiao
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China
| | - Cuiying Liang
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China
| | - Manni Wang
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China
| | - Fang Su
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China
| | - Dominique Ferrandon
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China.,Université de Strasbourg, RIDI UPR9022 du CNRS, Strasbourg, France
| | - Zi Li
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China
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Hermier D, Mathé V, Lan A, Santini C, Quignard-Boulangé A, Huneau JF, Mariotti F. Postprandial low-grade inflammation does not specifically require TLR4 activation in the rat. Nutr Metab (Lond) 2017; 14:65. [PMID: 29075306 PMCID: PMC5649083 DOI: 10.1186/s12986-017-0220-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 10/12/2017] [Indexed: 12/31/2022] Open
Abstract
Background Toll-like receptor 4 (TLR4), an innate immune receptor, is suspected to play a key role in the postprandial inflammation that is induced by a high-fat meal rich in saturated fatty acids (SFA). Our objective was to test this hypothesis by using a specific competitive inhibitor of TLR4 (INH) vs vehicle (VEH) administered immediately before a high-SFA meal in rats. Methods First, in a cross-over kinetic study of 12 rats receiving INH and VEH i.v. 10 min before the test meal, we measured plasma inflammatory and vascular markers for 6 h. Then, in 20 rats, 3 h after INH or VEH followed by the test meal (parallel study), we measured the mRNA level of a set of cytokines (Il1-β, Il-6, Tnfα, Mcp-1, Pai-1), and of Tlr4 and Tlr2 in the adipose tissue and the liver, and that of adhesion molecules (Icam-1 and Vcam-1) in the aorta. Results Plasma IL-6 and PAI-1 increased >4-fold at 3–4 h after test-meals, very similarly after INH as compared to VEH. The expression of TLR2 and of all measured cytokine genes in the adipose tissue was dramatically higher after INH (vs VEH). In the liver, gene expression of Il1-β, Tnfα, Mcp-1 and Tlr2, was also higher after INH, though more moderately, whereas that of Il-6 and Pai-1 was similar between groups. INH did not affect mRNA level of Icam-1 and Vcam-1 in the aorta. Conclusion TLR4 activation is not specifically required to mediate systemic postprandial inflammation and we propose that TLR2 and TLR4 exert a dual and interdependent mediation of the postprandial inflammatory response, at least in the adipose tissue.
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Affiliation(s)
- Dominique Hermier
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, F-75005 Paris, France
| | - Véronique Mathé
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, F-75005 Paris, France
| | - Annaïg Lan
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, F-75005 Paris, France
| | - Clélia Santini
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, F-75005 Paris, France
| | - Annie Quignard-Boulangé
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, F-75005 Paris, France
| | - Jean-François Huneau
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, F-75005 Paris, France
| | - François Mariotti
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay, 16 rue Claude Bernard, F-75005 Paris, France
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46
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Wang Q, Wang B, Saxena V, Miles L, Tiao J, Mortensen JE, Nathan JD. The gut-liver axis: impact of a mouse model of small-bowel bacterial overgrowth. J Surg Res 2017; 221:246-256. [PMID: 29229136 DOI: 10.1016/j.jss.2017.08.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 08/07/2017] [Accepted: 08/30/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND The mechanisms by which intestinal bacteria impact liver diseases remain poorly understood. The aim of this study was to develop a mouse model of small-bowel bacterial overgrowth and to determine its impact on hepatobiliary injury. MATERIALS AND METHODS A jejunal self-filling blind loop (SFBL) was created in C57BL/6 mice. Three weeks after surgery, the mice were euthanized, and bacterial cultures of luminal content of the loop and extraintestinal tissues were performed. Liver and jejunum were collected for histological grading of inflammation and injury. Serum liver biochemistry assays were performed. Hepatobiliary transporter mRNA expression in liver was measured by quantitative real-time polymerase chain reaction. Bile and blood were collected for measurement of total bile acids, phospholipid, and cholesterol. Mice undergoing jejunal transection and reanastomosis and laparotomy only served as control groups. RESULTS SFBL induced a dramatic increase in intraluminal bacterial counts, mesenteric lymph node bacterial translocation, and evidence of jejunal and hepatobiliary injury. Significant reductions in hepatic expression of hepatobiliary transporters involved in biliary canalicular export and basolateral uptake were observed in SFBL mice. SFBL resulted in a significant increase in biliary total bile acid concentration, decreases in bile phospholipid and cholesterol output, and an increase in the bile acid/phospholipid ratio. CONCLUSIONS We have developed a reproducible mouse model of small-bowel bacterial overgrowth with evidence of liver inflammation, altered hepatobiliary transporter expression, and alterations in bile composition. This model may help to elucidate the mechanisms by which gut-derived bacterial factors impact the liver and contribute to the exacerbation of liver diseases and biliary injury.
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Affiliation(s)
- Qingqing Wang
- Division of Pediatric General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Bin Wang
- Division of Pediatric General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Vijay Saxena
- Division of Pediatric General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Lili Miles
- Division of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Josh Tiao
- Division of Pediatric General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Joel E Mortensen
- Division of Pathology and Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Jaimie D Nathan
- Division of Pediatric General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
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Acidic Polysaccharide from Angelica sinensis Reverses Anemia of Chronic Disease Involving the Suppression of Inflammatory Hepcidin and NF- κB Activation. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:7601592. [PMID: 29147463 PMCID: PMC5632906 DOI: 10.1155/2017/7601592] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 06/22/2017] [Accepted: 07/12/2017] [Indexed: 12/14/2022]
Abstract
Anemia of chronic disease (ACD) is the second most prevalent anemia and frequently occurs in patients with acute or chronic immune activation. In the current study, we evaluated the therapeutic efficacy of Angelica sinensis polysaccharide (ASP) against ACD in rats and the potential mechanisms involved. The results showed that ASP inhibited inflammatory hepcidin in both HepG2 cells and ACD rats by blocking the IL-6/STAT3 and BMP/SMAD pathways. In ACD rats, the administration of ASP increased ferroportin expression, mobilized iron from the liver and spleen, increased serum iron levels, caused an elevation of serum EPO, and effectively relieved the anemia. Furthermore, ASP inhibited NF-κB p65 activation via the IκB kinases- (IKKs-) IκBα pathway, thereby reducing the secretion of interleukin-6 (IL-6) and TNF-α, which is known to inhibit erythropoiesis. Our findings indicate that ASP is a potential treatment option for patients suffering from ACD.
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48
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Kızıldağ S, Arslan S, Özbilüm N, Engin A, Bakır M. Effect of TLR10 (2322A/G, 720A/C, and 992T/A) polymorphisms on the pathogenesis of Crimean Congo hemorrhagic fever disease. J Med Virol 2017; 90:19-25. [PMID: 28843003 DOI: 10.1002/jmv.24924] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 08/08/2017] [Indexed: 01/07/2023]
Abstract
Crimean Congo hemorrhagic fever (CCHF) is a tick-borne disease caused by the Crimean Congo hemorrhagic fever virus (CCHFV). Toll-like receptors (TLRs) are type 1 transmembrane proteins of immune cells that play a critical role in innate and adaptive immunity. The present study first time aims to investigate the relation between TLR10 gene polymorphisms (720A/C, 992T/A, and 2322A/G), severity/non-severity, fatality/non-fatality, and CCFH disease by using PCR-RFLP assay in a Turkish population. TLR10 720A/C polymorphism was determined to be statistically significant both genotype and allele frequency (P = 0,011, P = 0.015, respectively). TLR10 992T/A polymorphism was found statistically significant relationships between patient and control (P = 0.026) and individual with AA genotype have approximately three times greater risk than TT genotype (OR = 2.93). There was not a significant difference in 2322A/G genotype distribution (P = 0.152). There were also statistically significant associations between both TLR10 992T/A and 2322A/G polymorphism and patient mortality (P = 0.001 and P = 0.008, respectively). We have not found statistically any linkage among TLR10 haplotype, but individual AAA and GAT haplotype have higher risk than individual AAT haplotype (OR = 3.22, OR = 1.93, respectively). Consequently, this study shows that pathogenesis of CCHF disease is associated with the TLR10 720A/C and 992T/A polymorphisms. There is a statistically significant association in fatal/non-fatal patients with TLR10 720A/C and 992T/A. The TLR10 992AA genotype might increase and TLR10 720CC genotype might decrease susceptibility to pathogenesis of CCHF disease. TLR 10 polymorphisms may be also an important biomarker for CCHF susceptibility and fatality rate.
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Affiliation(s)
- Sibel Kızıldağ
- Department of Biology, Faculty of Science, Yüzüncü Yıl University, Van, Turkey
| | - Serdal Arslan
- Department of Medical Biology, Faculty of Medicine, Cumhuriyet University, Sivas, Turkey
| | - Nil Özbilüm
- Department of Molecular Biology and Genetic, Faculty of Science, Cumhuriyet University, Sivas, Turkey
| | - Aynur Engin
- Department of Infectious Diseases and Clinical Microbiology, Cumhuriyet University, School of Medicine, Sivas, Turkey
| | - Mehmet Bakır
- Department of Infectious Diseases and Clinical Microbiology, Cumhuriyet University, School of Medicine, Sivas, Turkey
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MicroRNA-146a-5p attenuates liver fibrosis by suppressing profibrogenic effects of TGFβ1 and lipopolysaccharide. Cell Signal 2017; 39:1-8. [PMID: 28739486 DOI: 10.1016/j.cellsig.2017.07.016] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Revised: 07/18/2017] [Accepted: 07/20/2017] [Indexed: 12/26/2022]
Abstract
Liver fibrosis is characterized by proliferation and activation of hepatic stellate cells (HSCs). Transforming growth factor-β1 (TGFβ1) is crucial for liver fibrogenesis, and gut-derived endotoxin (LPS) also plays an important role in liver fibrogenesis. In the present study, we found that microRNA-146a-5p (miR-146a-5p) could regulate TGFβ1/Smad and LPS/NF-κB/Bambi pathways to attenuate liver fibrosis. Downregulated miR-146a-5p and upregulated level of LPS were found in liver of CCl4-treated rats. On cellular level, expression of miR-146a-5p is reduced during primary rat HSCs naturally activation and changed in response to TGFβ1 and/or LPS stimulation in primary rat HSCs and human HSC line LX-2. Further overexpression of miR-146a-5p suppresses proliferation and activation of HSCs. The underlying mechanism involved that miR-146a-5p directly suppresses profibrogenic effects of TGFβ1 by down-regulating the expression of Smad4 and phosphorylation of Smad2. Moreover, miR-146a-5p indirectly suppresses TGFβ1/Smad pathway by targeting IL-1 receptor-associated kinase 1 (IRAK1) and TNF receptor associated factor-6 (TRAF6), two major components of LPS/NF-κB/Bambi pathway, to reduce inhibition of TGFβ pseudoreceptor Bambi. These results indicate that miR-146a-5p abrogate hepatic fibrosis by suppressing both TGFβ/Smad and LPS/NF-κB/Bambi signaling pathway in HSCs and suggest that miR-146a-5p is a potential therapeutic target for liver fibrosis.
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50
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Yan L, Hu X, Wu Q, Jiang R, Zhang S, Ling Q, Liu H, Jiang X, Wan J, Liu Y. CQMUH-011, a novel adamantane sulfonamide compound, inhibits lipopolysaccharide- and D-galactosamine-induced fulminant hepatic failure in mice. Int Immunopharmacol 2017; 47:231-243. [PMID: 28433945 DOI: 10.1016/j.intimp.2017.04.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Revised: 04/12/2017] [Accepted: 04/13/2017] [Indexed: 12/11/2022]
Abstract
CQMUH-011, a novel adamantane sulfonamide compound, was shown to suppress macrophage activation and proliferation in our previous study. However, it is unknown whether CQMUH-011 has anti-inflammatory and hepatoprotective properties. In this study, we investigated the potential effects and mechanisms of CQMUH-011 on lipopolysaccharide (LPS)-induced RAW264.7 cell activation in vitro and LPS- and D-galactosamine (D-GalN)-induced fulminant hepatic failure (FHF) in vivo. The results showed that in RAW264.7 cells challenged by LPS, CQMUH-011 inhibited cell proliferation and induced cell cycle arrest and apoptosis. Furthermore, CQMUH-011 reduced tumor necrosis factor (TNF)-α and interleukin (IL)-1β production and down-regulated the overexpression of toll-like receptor 4 (TLR4) and nuclear factor (NF)-κB induced by LPS in RAW264.7 cells. In vivo, CQMUH-011 reduced serum levels of aspartic aminotransferase and alanine transaminase and improved the mortality and hepatic pathological damage induced by LPS/D-GalN in mice. Moreover, CQMUH-011 significantly inhibited the serum levels of proinflammatory mediators, including TNF-α, IL-6, IL-1β, nitric oxide (NO), and prostaglandin E2 (PGE2), and down-regulated the protein expression of TLR4, p38 mitogen-activated protein kinases, NF-κB, NF-κB inhibitor α (IκBα), IκB kinase β (IKKβ), cyclooxygenase-2 (COX-2) and inducible NO synthases (iNOS) induced by LPS/D-GalN in mice. In conclusion, these results demonstrated that CQMUH-011 has a notable anti-inflammatory effect and protects mice from LPS/D-GalN-induced FHF and that the molecular mechanisms might be related to the inhibition of the TLR4/NF-κB signaling pathway activation, the subsequent decrease in proinflammatory mediator production, and the inhibition of macrophage activation.
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Affiliation(s)
- Liping Yan
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China
| | - Xiangnan Hu
- College of Pharmacology, Chongqing Medical University, Chongqing 400016, China
| | - Qihong Wu
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China
| | - Rong Jiang
- College of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Sisi Zhang
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China
| | - Qiao Ling
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China
| | - Hailin Liu
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China
| | - Xuejun Jiang
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China
| | - Jingyuan Wan
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China
| | - Yingju Liu
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China.
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