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Bajaj JS, Fagan A, Gavis EA, Mousel T, Gallagher ML, Puri P, Fuchs M, Davis BC, Hylemon PB, Zhou H, Ahluwalia V, Cadrain R, Sikaroodi M, Gillevet PM. The RIVET RCT: Rifamycin SV MMX improves muscle mass, physical function, and ammonia in cirrhosis and minimal encephalopathy. Hepatol Commun 2024; 8:e0384. [PMID: 38315140 PMCID: PMC10843468 DOI: 10.1097/hc9.0000000000000384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/02/2024] [Indexed: 02/07/2024] Open
Abstract
BACKGROUND Minimal hepatic encephalopathy (MHE) negatively affects the prognosis of cirrhosis, but treatment is not standard. Rifamycin SV MMX (RiVM) is a nonabsorbable rifampin derivative with colonic action. METHODS In a phase 2 placebo-controlled, double-blind randomized clinical trial patients with MHE were randomized to RiVM or placebo for 30 days with a 7-day follow-up. The primary endpoint was a change in stool cirrhosis dysbiosis ratio. Gut-brain (cognition, stool/salivary microbiome, ammonia, brain magnetic resonance spectroscopy), inflammation (stool calprotectin/serum cytokines), patient-reported outcomes (sickness impact profile: total/physical/psychosocial, high = worse), and sarcopenia (handgrip, bioelectric impedance) were secondary. Between/within groups and delta (post-pre) comparisons were performed. RESULTS Thirty patients (15/group) were randomized and completed the study without safety concerns. While cirrhosis dysbiosis ratio was statistically similar on repeated measures ANOVA (95% CI: -0.70 to 3.5), ammonia significantly reduced (95% CI: 4.4-29.6) in RiVM with changes in stool microbial α/β-diversity. MHE status was unchanged but only serial dotting (which tests motor strength) improved in RiVM-assigned patients. Delta physical sickness impact profile (95% CI: 0.33 = 8.5), lean mass (95% CI: -3.3 to -0.9), and handgrip strength (95% CI: -8.1 to -1.0) improved in RiVM versus placebo. Stool short-chain fatty acids (propionate, acetate, and butyrate) increased post-RiVM. Serum, urine, and stool bile acid profile changed to nontoxic bile acids (higher hyocholate/ursodeoxycholate and lower deoxycholate/lithocholate) post-RiVM. Serum IL-1β and stool calprotectin decreased while brain magnetic resonance spectroscopy showed higher glutathione concentrations in RiVM. CONCLUSIONS RiVM is well tolerated in patients with MHE with changes in stool microbial composition and function, ammonia, inflammation, brain oxidative stress, and sarcopenia-related parameters without improvement in cognition. RiVM modulates the gut-brain axis and gut-muscle axis in cirrhosis.
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Affiliation(s)
- Jasmohan S. Bajaj
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA
| | - Andrew Fagan
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA
| | - Edith A. Gavis
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA
| | - Travis Mousel
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA
| | - Mary L. Gallagher
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA
| | - Puneet Puri
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA
| | - Michael Fuchs
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA
| | - Brian C. Davis
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA
| | - Phillip B. Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA
| | - Huiping Zhou
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA
| | - Vishwadeep Ahluwalia
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA
- Center for Advanced Brain Imaging, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Robert Cadrain
- Collaborative Advanced Research Imaging Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Masoumeh Sikaroodi
- Microbiome Analysis Center, George Mason University, Manassas, Virginia, USA
| | - Patrick M. Gillevet
- Microbiome Analysis Center, George Mason University, Manassas, Virginia, USA
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Wang Y, Pandak WM, Hylemon PB, Min HK, Min J, Fuchs M, Sanyal AJ, Ren S. Cholestenoic acid as endogenous epigenetic regulator decreases hepatocyte lipid accumulation in vitro and in vivo. Am J Physiol Gastrointest Liver Physiol 2024; 326:G147-G162. [PMID: 37961761 DOI: 10.1152/ajpgi.00184.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/08/2023] [Accepted: 11/12/2023] [Indexed: 11/15/2023]
Abstract
Cholestenoic acid (CA) has been reported as an important biomarker of many severe diseases, but its physiological and pathological roles remain unclear. This study aimed to investigate the potential role of CA in hepatic lipid homeostasis. Enzyme kinetic studies revealed that CA specifically activates DNA methyltransferases 1 (DNMT1) at low concentration with EC50 = 1.99 × 10-6 M and inhibits the activity at higher concentration with IC50 = 9.13 × 10-6 M, and specifically inhibits DNMT3a, and DNMT3b activities with IC50= 8.41 × 10-6 M and IC50= 4.89 × 10-6 M, respectively. In a human hepatocyte in vitro model of high glucose (HG)-induced lipid accumulation, CA significantly increased demethylation of 5mCpG in the promoter regions of over 7,000 genes, particularly those involved in master signaling pathways such as calcium-AMPK and 0.0027 at 6 h. RNA sequencing analysis showed that the downregulated genes are affected by CA encoding key enzymes, such as PCSK9, MVK, and HMGCR, which are involved in cholesterol metabolism and steroid biosynthesis pathways. In addition, untargeted lipidomic analysis showed that CA significantly reduced neutral lipid levels by 60% in the cells cultured in high-glucose media. Administration of CA in mouse metabolic dysfunction-associated steatotic liver disease (MASLD) models significantly decreases lipid accumulation, suppresses the gene expression involved in lipid biosynthesis in liver tissues, and alleviates liver function. This study shows that CA as an endogenous epigenetic regulator decreases lipid accumulation via epigenetic regulation. The results indicate that CA can be considered a potential therapeutic target for the treatment of metabolic disorders.NEW & NOTEWORTHY To our knowledge, this study is the first to identify the mitochondrial monohydroxy bile acid cholestenoic acid (CA) as an endogenous epigenetic regulator that regulates lipid metabolism through epigenome modification in human hepatocytes. The methods used in this study are all big data analysis, and the results of each part show the global regulation of CA on human hepatocytes rather than narrow point effects.
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Affiliation(s)
- Yaping Wang
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia, United States
- McGuire Veterans Affairs Medical Center, Richmond, Virginia, United States
| | - Williams M Pandak
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia, United States
- McGuire Veterans Affairs Medical Center, Richmond, Virginia, United States
| | - Phillip B Hylemon
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia, United States
- McGuire Veterans Affairs Medical Center, Richmond, Virginia, United States
| | - Hae-Ki Min
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia, United States
- McGuire Veterans Affairs Medical Center, Richmond, Virginia, United States
| | - John Min
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia, United States
- McGuire Veterans Affairs Medical Center, Richmond, Virginia, United States
| | - Michael Fuchs
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia, United States
- McGuire Veterans Affairs Medical Center, Richmond, Virginia, United States
| | - Arun J Sanyal
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia, United States
- McGuire Veterans Affairs Medical Center, Richmond, Virginia, United States
| | - Shunlin Ren
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia, United States
- McGuire Veterans Affairs Medical Center, Richmond, Virginia, United States
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Wang Y, Zhao D, Su L, Tai YL, Way GW, Zeng J, Yan Q, Xu Y, Wang X, Gurley EC, Zhou XQ, Liu J, Liu J, Chen W, Hylemon PB, Zhou H. Therapeutic potential of berberine in attenuating cholestatic liver injury: insights from a PSC mouse model. Cell Biosci 2024; 14:14. [PMID: 38273376 PMCID: PMC10809567 DOI: 10.1186/s13578-024-01195-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 01/09/2024] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND AND AIMS Primary sclerosing cholangitis (PSC) is a chronic liver disease characterized by progressive biliary inflammation and bile duct injury. Berberine (BBR) is a bioactive isoquinoline alkaloid found in various herbs and has multiple beneficial effects on metabolic and inflammatory diseases, including liver diseases. This study aimed to examine the therapeutic effect of BBR on cholestatic liver injury in a PSC mouse model (Mdr2-/- mice) and elucidate the underlying mechanisms. METHODS Mdr2-/-mice (12-14 weeks old, both sexes) received either BBR (50 mg/kg) or control solution daily for eight weeks via oral gavage. Histological and serum biochemical analyses were used to assess fibrotic liver injury severity. Total RNAseq and pathway analyses were used to identify the potential signaling pathways modulated by BBR in the liver. The expression levels of key genes involved in regulating hepatic fibrosis, bile duct proliferation, inflammation, and bile acid metabolism were validated by qRT-PCR or Western blot analysis. The bile acid composition and levels in the serum, liver, small intestine, and feces and tissue distribution of BBR were measured by LC-MS/MS. Intestinal inflammation and injury were assessed by gene expression profiling and histological analysis. The impact on the gut microbiome was assessed using 16S rRNA gene sequencing. RESULTS BBR treatment significantly ameliorated cholestatic liver injury, evidenced by decreased serum levels of AST, ALT, and ALP, and reduced bile duct proliferation and hepatic fibrosis, as shown by H&E, Picro-Sirius Red, and CK19 IHC staining. RNAseq and qRT-PCR analyses indicated a substantial inhibition of fibrotic and inflammatory gene expression. BBR also mitigated ER stress by downregulating Chop, Atf4 and Xbp-1 expression. In addition, BBR modulated bile acid metabolism by altering key gene expressions in the liver and small intestine, resulting in restored bile acid homeostasis characterized by reduced total bile acids in serum, liver, and small intestine and increased fecal excretion. Furthermore, BBR significantly improved intestinal barrier function and reduced bacterial translocation by modulating the gut microbiota. CONCLUSION BBR effectively attenuates cholestatic liver injury, suggesting its potential as a therapeutic agent for PSC and other cholestatic liver diseases.
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Affiliation(s)
- Yanyan Wang
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA, 23298-0678, USA
- School of Pharmaceutical Science, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Derrick Zhao
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA, 23298-0678, USA
| | - Lianyong Su
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA, 23298-0678, USA
| | - Yun-Ling Tai
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA, 23298-0678, USA
| | - Grayson W Way
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA, 23298-0678, USA
| | - Jing Zeng
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA, 23298-0678, USA
| | - Qianhua Yan
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA, 23298-0678, USA
- Department of Endocrinology, Jiangsu Province Hospital of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Ying Xu
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA, 23298-0678, USA
| | - Xuan Wang
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA, 23298-0678, USA
| | - Emily C Gurley
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA, 23298-0678, USA
| | - Xi-Qiao Zhou
- Department of Endocrinology, Jiangsu Province Hospital of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jinze Liu
- Department of Biostatistics, Virginia Commonwealth University, Richmond, VA, USA
| | - Jinpeng Liu
- Department of Computer Science, University of Kentucky, Lexington, KY, USA
| | - Weidong Chen
- School of Pharmaceutical Science, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA, 23298-0678, USA
| | - Huiping Zhou
- Department of Microbiology and Immunology, Virginia Commonwealth University and Richmond Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA, 23298-0678, USA.
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Awoniyi M, Wang J, Ngo B, Meadows V, Tam J, Viswanathan A, Lai Y, Montgomery S, Farmer M, Kummen M, Thingholm L, Schramm C, Bang C, Franke A, Lu K, Zhou H, Bajaj JS, Hylemon PB, Ting J, Popov YV, Hov JR, Francis HL, Sartor RB. Protective and aggressive bacterial subsets and metabolites modify hepatobiliary inflammation and fibrosis in a murine model of PSC. Gut 2023; 72:671-685. [PMID: 35705368 PMCID: PMC9751228 DOI: 10.1136/gutjnl-2021-326500] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 05/16/2022] [Indexed: 01/14/2023]
Abstract
OBJECTIVE Conflicting microbiota data exist for primary sclerosing cholangitis (PSC) and experimental models. GOAL define the function of complex resident microbes and their association relevant to PSC patients by studying germ-free (GF) and antibiotic-treated specific pathogen-free (SPF) multidrug-resistant 2 deficient (mdr2-/- ) mice and microbial profiles in PSC patient cohorts. DESIGN We measured weights, liver enzymes, RNA expression, histological, immunohistochemical and fibrotic biochemical parameters, faecal 16S rRNA gene profiling and metabolomic endpoints in gnotobiotic and antibiotic-treated SPF mdr2-/- mice and targeted metagenomic analysis in PSC patients. RESULTS GF mdr2-/- mice had 100% mortality by 8 weeks with increasing hepatic bile acid (BA) accumulation and cholestasis. Early SPF autologous stool transplantation rescued liver-related mortality. Inhibition of ileal BA transport attenuated antibiotic-accelerated liver disease and decreased total serum and hepatic BAs. Depletion of vancomycin-sensitive microbiota exaggerated hepatobiliary disease. Vancomycin selectively decreased Lachnospiraceae and short-chain fatty acids (SCFAs) but expanded Enterococcus and Enterobacteriaceae. Antibiotics increased Enterococcus faecalis and Escherichia coli liver translocation. Colonisation of GF mdr2-/- mice with translocated E. faecalis and E. coli strains accelerated hepatobiliary inflammation and mortality. Lachnospiraceae colonisation of antibiotic pretreated mdr2-/- mice reduced liver fibrosis, inflammation and translocation of pathobionts, and SCFA-producing Lachnospiraceae and purified SCFA decreased fibrosis. Faecal Lachnospiraceae negatively associated, and E. faecalis/ Enterobacteriaceae positively associated, with PSC patients' clinical severity by Mayo risk scores. CONCLUSIONS We identified novel functionally protective and detrimental resident bacterial species in mdr2-/- mice and PSC patients with associated clinical risk score. These insights may guide personalised targeted therapeutic interventions in PSC patients.
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Affiliation(s)
- Muyiwa Awoniyi
- Division of Gastroenterology and Hepatology, University of North Carolina System, Chapel Hill, North Carolina, USA
- Center for Gastrointestinal Biology and Disease, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Jeremy Wang
- Center for Gastrointestinal Biology and Disease, University of North Carolina System, Chapel Hill, North Carolina, USA
- Department of Genetics, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Billy Ngo
- Center for Gastrointestinal Biology and Disease, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Vik Meadows
- Department of Gastroenterology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Jason Tam
- Department of Microbiology and Immunology, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Amba Viswanathan
- Center for Gastrointestinal Biology and Disease, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Yunjia Lai
- Department of Environmental Sciences and Engineering, Gillings School of Global School of Public Health, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Stephanie Montgomery
- Department of Pathology, Division of Comparative Medicine, and Lineberger Comprehensive Cancer Center, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Morgan Farmer
- Center for Gastrointestinal Biology and Disease, University of North Carolina System, Chapel Hill, North Carolina, USA
| | - Martin Kummen
- Norwegian PSC Research Center, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Louise Thingholm
- Institute of Clinical Molecular Biology, Zentrums für Molekulare Biowissenschaften, Kiel, Schleswig-Holstein, Germany
| | | | - Corinna Bang
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Kun Lu
- Department of Environmental Sciences and Engineering, Gillings School of Global School of Public Health, University of North Carolina System, Chapel Hill, North Carolina, USA
- Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Huiping Zhou
- Department of Microbiology and Immunology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
- Department of Research, McGuire Veterans Affairs Medical Cente, Richmond, Virginia, USA
- Virginia Commonwealth University Medical Center, Richmond, Virginia, USA
| | - Jasmohan S Bajaj
- Department of Microbiology and Immunology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
- Department of Research, McGuire Veterans Affairs Medical Cente, Richmond, Virginia, USA
- Virginia Commonwealth University Medical Center, Richmond, Virginia, USA
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
- Department of Research, McGuire Veterans Affairs Medical Cente, Richmond, Virginia, USA
- Virginia Commonwealth University Medical Center, Richmond, Virginia, USA
| | - Jenny Ting
- Department of Microbiology and Immunology, University of North Carolina System, Chapel Hill, North Carolina, USA
- UNC Lineberger Comprehensive Cancer Center, Center for Translational Immunology, University of North Carolina, Chapel Hill, Chapel Hill, North Carolina, USA
| | - Yury V Popov
- Department of Gastroenterology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, Massachusetts, USA
| | - Johannes Roksund Hov
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Norwegian PSC Research Center, Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway
| | - Heather L Francis
- Indiana University School of Medicine, Indianapolis, Indiana, USA
- Richard L. Roudebush VA Medical Center, Indianapolis, Indiana, USA
| | - Ryan Balfour Sartor
- Division of Gastroenterology and Hepatology, University of North Carolina System, Chapel Hill, North Carolina, USA
- Center for Gastrointestinal Biology and Disease, University of North Carolina System, Chapel Hill, North Carolina, USA
- Department of Microbiology and Immunology, University of North Carolina System, Chapel Hill, North Carolina, USA
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Wang Y, Zeng J, Chen W, Fan J, Hylemon PB, Zhou H. Long Noncoding RNA H19: A Novel Oncogene in Liver Cancer. Noncoding RNA 2023; 9:19. [PMID: 36960964 PMCID: PMC10037657 DOI: 10.3390/ncrna9020019] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/04/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023] Open
Abstract
Liver cancer is the second leading cause of cancer-related death globally, with limited treatment options. Recent studies have demonstrated the critical role of long noncoding RNAs (lncRNAs) in the pathogenesis of liver cancers. Of note, mounting evidence has shown that lncRNA H19, an endogenous noncoding single-stranded RNA, functions as an oncogene in the development and progression of liver cancer, including hepatocellular carcinoma (HCC) and cholangiocarcinoma (CCA), the two most prevalent primary liver tumors in adults. H19 can affect many critical biological processes, including the cell proliferation, apoptosis, invasion, and metastasis of liver cancer by its function on epigenetic modification, H19/miR-675 axis, miRNAs sponge, drug resistance, and its regulation of downstream pathways. In this review, we will focus on the most relevant molecular mechanisms of action and regulation of H19 in the development and pathophysiology of HCC and CCA. This review aims to provide valuable perspectives and translational applications of H19 as a potential diagnostic marker and therapeutic target for liver cancer disease.
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Affiliation(s)
- Yanyan Wang
- Department of Microbiology and Immunology, Medical College of Virginia, Central Virginia Veterans Healthcare System, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Jing Zeng
- Department of Microbiology and Immunology, Medical College of Virginia, Central Virginia Veterans Healthcare System, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Weidong Chen
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China
| | - Jiangao Fan
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Phillip B. Hylemon
- Department of Microbiology and Immunology, Medical College of Virginia, Central Virginia Veterans Healthcare System, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA
| | - Huiping Zhou
- Department of Microbiology and Immunology, Medical College of Virginia, Central Virginia Veterans Healthcare System, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA
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6
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Aseem SO, Hylemon PB, Zhou H. Bile Acids and Biliary Fibrosis. Cells 2023; 12:cells12050792. [PMID: 36899928 PMCID: PMC10001305 DOI: 10.3390/cells12050792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/22/2023] [Accepted: 02/24/2023] [Indexed: 03/06/2023] Open
Abstract
Biliary fibrosis is the driving pathological process in cholangiopathies such as primary biliary cholangitis (PBC) and primary sclerosing cholangitis (PSC). Cholangiopathies are also associated with cholestasis, which is the retention of biliary components, including bile acids, in the liver and blood. Cholestasis may worsen with biliary fibrosis. Furthermore, bile acid levels, composition and homeostasis are dysregulated in PBC and PSC. In fact, mounting data from animal models and human cholangiopathies suggest that bile acids play a crucial role in the pathogenesis and progression of biliary fibrosis. The identification of bile acid receptors has advanced our understanding of various signaling pathways involved in regulating cholangiocyte functions and the potential impact on biliary fibrosis. We will also briefly review recent findings linking these receptors with epigenetic regulatory mechanisms. Further detailed understanding of bile acid signaling in the pathogenesis of biliary fibrosis will uncover additional therapeutic avenues for cholangiopathies.
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Affiliation(s)
- Sayed Obaidullah Aseem
- Stravitz-Sanyal Institute for Liver Disease & Metabolic Health, School of Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
- Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA 23298, USA
- Correspondence:
| | - Phillip B. Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA 23298, USA
- Central Virginia Veterans Healthcare System, Richmond, VA 23249, USA
| | - Huiping Zhou
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA 23298, USA
- Central Virginia Veterans Healthcare System, Richmond, VA 23249, USA
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7
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Wolstenholme JT, Saunders JM, Smith M, Kang JD, Hylemon PB, González-Maeso J, Fagan A, Zhao D, Sikaroodi M, Herzog J, Shamsaddini A, Peña-Rodríguez M, Su L, Tai YL, Zheng J, Cheng PC, Sartor RB, Gillevet PM, Zhou H, Bajaj JS. Reduced alcohol preference and intake after fecal transplant in patients with alcohol use disorder is transmissible to germ-free mice. Nat Commun 2022; 13:6198. [PMID: 36261423 PMCID: PMC9581985 DOI: 10.1038/s41467-022-34054-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 10/07/2022] [Indexed: 01/11/2023] Open
Abstract
Alcohol use disorder is a major cause of morbidity, which requires newer treatment approaches. We previously showed in a randomized clinical trial that alcohol craving and consumption reduces after fecal transplantation. Here, to determine if this could be transmitted through microbial transfer, germ-free male C57BL/6 mice received stool or sterile supernatants collected from the trial participants pre-/post-fecal transplant. We found that mice colonized with post-fecal transplant stool but not supernatants reduced ethanol acceptance, intake and preference versus pre-fecal transplant colonized mice. Microbial taxa that were higher in post-fecal transplant humans were also associated with lower murine alcohol intake and preference. A majority of the differentially expressed genes (immune response, inflammation, oxidative stress response, and epithelial cell proliferation) occurred in the intestine rather than the liver and prefrontal cortex. These findings suggest a potential for therapeutically targeting gut microbiota and the microbial-intestinal interface to alter gut-liver-brain axis and reduce alcohol consumption in humans.
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Affiliation(s)
- Jennifer T Wolstenholme
- VCU-Alcohol Research Center and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
| | - Justin M Saunders
- Department of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, USA
| | - Maren Smith
- VCU-Alcohol Research Center and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
| | - Jason D Kang
- Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA
| | - Phillip B Hylemon
- Department of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, USA
| | - Javier González-Maeso
- Department of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, USA
| | - Andrew Fagan
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, VA, USA
| | - Derrick Zhao
- Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA
| | | | - Jeremy Herzog
- National Gnotobiotic Rodent Research Center, Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | | | - Marcela Peña-Rodríguez
- University Center for Health Sciences, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Lianyong Su
- Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA
| | - Yun-Ling Tai
- Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA
| | - Jing Zheng
- Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA
| | - Po-Cheng Cheng
- Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA
| | - R Balfour Sartor
- National Gnotobiotic Rodent Research Center, Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Medicine, Division of Gastroenterology and Hepatology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | | | - Huiping Zhou
- Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA
| | - Jasmohan S Bajaj
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, VA, USA.
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8
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Wang Y, Tai YL, Way G, Zeng J, Zhao D, Su L, Jiang X, Jackson KG, Wang X, Gurley EC, Liu J, Liu J, Chen W, Wang XY, Sanyal AJ, Hylemon PB, Zhou H. RNA binding protein HuR protects against NAFLD by suppressing long noncoding RNA H19 expression. Cell Biosci 2022; 12:172. [PMID: 36224648 PMCID: PMC9558407 DOI: 10.1186/s13578-022-00910-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/06/2022] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND NAFLD has become the most common chronic liver disease worldwide. Human antigen R (HuR), an RNA-binding protein, is an important post-transcriptional regulator. HuR has been reported as a key player in regulating lipid homeostasis in the liver and adipose tissues by using tissue-specific HuR knockout mice. However, the underlying mechanism by which hepatocyte-specific HuR regulates hepatic lipid metabolism under metabolic stress remains unclear and is the focus of this study. METHODS Hepatocyte-specific HuR deficient mice (HuRhKO) and age-/gender-matched control mice, as well as long-noncoding RNA H19 knockout mice (H19-/-), were fed a Western Diet plus sugar water (WDSW). Hepatic lipid accumulation, inflammation and fibrosis were examined by histology, RNA transcriptome analysis, qRT-PCR, and Western blot analysis. Bile acid composition was measured using LC-MS/MS. RESULTS Hepatocyte-specific deletion of HuR not only significantly increased hepatic lipid accumulation by modulating fatty acid synthesis and metabolism but also markedly induced inflammation by increasing immune cell infiltration and neutrophil activation under metabolic stress. In addition, hepatic deficiency of HuR disrupted bile acid homeostasis and enhanced liver fibrosis. Mechanistically, HuR is a repressor of H19 expression. Analysis of a recently published dataset (GSE143358) identified H19 as the top-upregulated gene in liver-specific HuR knockout mice. Similarly, hepatocyte-specific deficiency of HuR dramatically induced the expression of H19 and sphingosine-1 phosphate receptor 2 (S1PR2), but reduced the expression of sphingosine kinase 2 (SphK2). WDSW-induced hepatic lipid accumulation was alleviated in H19-/- mice. Furthermore, the downregulation of H19 alleviated WDSW-induced NAFLD in HuRhKO mice. CONCLUSIONS HuR not only functions as an RNA binding protein to modulate post-transcriptional gene expression but also regulates H19 promoter activity. Hepatic HuR is an important regulator of hepatic lipid metabolism via modulating H19 expression.
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Affiliation(s)
- Yanyan Wang
- grid.224260.00000 0004 0458 8737Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678 USA ,grid.224260.00000 0004 0458 8737McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA USA ,grid.252251.30000 0004 1757 8247School of Pharmaceutical Science, Anhui University of Chinese Medicine, Hefei, China
| | - Yun-Ling Tai
- grid.224260.00000 0004 0458 8737Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678 USA
| | - Grayson Way
- grid.224260.00000 0004 0458 8737Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678 USA ,grid.224260.00000 0004 0458 8737Center for Clinical and Translational Research, Virginia Commonwealth University, Richmond, VA 23298 USA
| | - Jing Zeng
- grid.224260.00000 0004 0458 8737Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678 USA
| | - Derrick Zhao
- grid.224260.00000 0004 0458 8737Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678 USA ,grid.224260.00000 0004 0458 8737McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA USA
| | - Lianyong Su
- grid.224260.00000 0004 0458 8737Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678 USA ,grid.224260.00000 0004 0458 8737McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA USA
| | - Xixian Jiang
- grid.224260.00000 0004 0458 8737Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678 USA ,grid.224260.00000 0004 0458 8737McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA USA
| | - Kaitlyn G. Jackson
- grid.224260.00000 0004 0458 8737Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678 USA ,grid.224260.00000 0004 0458 8737McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA USA
| | - Xuan Wang
- grid.224260.00000 0004 0458 8737Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678 USA ,grid.224260.00000 0004 0458 8737McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA USA
| | - Emily C. Gurley
- grid.224260.00000 0004 0458 8737Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678 USA ,grid.224260.00000 0004 0458 8737McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA USA
| | - Jinze Liu
- grid.224260.00000 0004 0458 8737Department of Biostatistics, Virginia Commonwealth University, Richmond, VA USA
| | - Jinpeng Liu
- grid.266539.d0000 0004 1936 8438Department of Computer Science, University of Kentucky, Lexington, KY USA
| | - Weidong Chen
- grid.252251.30000 0004 1757 8247School of Pharmaceutical Science, Anhui University of Chinese Medicine, Hefei, China
| | - Xiang-Yang Wang
- grid.224260.00000 0004 0458 8737McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA USA ,grid.224260.00000 0004 0458 8737Department of Human & Molecular Genetics, Virginia Commonwealth University School of Medicine, Richmond, VA USA ,grid.224260.00000 0004 0458 8737Institute of Molecular Medicine, Virginia Commonwealth University School of Medicine, Richmond, VA USA ,grid.224260.00000 0004 0458 8737Massey Cancer Center, Virginia Commonwealth University School of Medicine, Richmond, VA USA
| | - Arun J. Sanyal
- grid.224260.00000 0004 0458 8737Department of Internal Medicine/GI Division, Virginia Commonwealth University School of Medicine, Richmond, VA USA
| | - Phillip B. Hylemon
- grid.224260.00000 0004 0458 8737Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678 USA ,grid.224260.00000 0004 0458 8737McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA USA
| | - Huiping Zhou
- grid.224260.00000 0004 0458 8737Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678 USA ,grid.224260.00000 0004 0458 8737McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA USA
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9
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Abstract
This article describes the complex interactions occurring between diet, the gut microbiome, and bile acids in the etiology of fatty liver disease. Perhaps 25% of the world's population may have nonalcoholic fatty liver disease (NAFLD) and a significant percentage (∼20%) of these individuals will progress to nonalcoholic steatohepatitis (NASH). Currently, the only recommended treatment for NAFLD and NASH is a change in diet and exercise. A Western-type diet containing high fructose corn syrup, fats, and cholesterol creates gut dysbiosis, increases intestinal permeability and uptake of LPS causing low-grade chronic inflammation in the body. Fructose is a "lipogenic" sugar that induces long-chain fatty acid (LCFA) synthesis in the liver. Inflammation decreases the oxidation of LCFA, allowing fat accumulation in hepatocytes. Hepatic bile acid transporters are downregulated by inflammation slowing their enterohepatic circulation and allowing conjugated bile acids (CBA) to increase in the serum and liver of NASH patients. High levels of CBA in the liver are hypothesized to activate sphingosine-1-phosphate receptor 2 (S1PR2), activating pro-inflammatory and fibrosis pathways enhancing NASH progression. Because inflammation appears to be a major physiological driving force in NAFLD/NASH, new drugs and treatment protocols may require the use of anti-inflammatory compounds, such as berberine, in combination with bile acid receptor agonists or antagonists. Emerging new molecular technologies may provide guidance in unraveling the complex physiological pathways driving fatty liver disease and better approaches to prevention and treatment. © 2021 American Physiological Society. Compr Physiol 11:1-12, 2021.
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Affiliation(s)
- Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, USA.,Central Virginia Veterans Healthcare System, Richmond, Virginia, USA
| | - Lianyong Su
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Po-Cheng Zheng
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Jasmohan S Bajaj
- Department of Medicine/Division of Gastroenterology, Hepatology and Nutrition, Medical College of Virginia, Virginia Commonwealth University, Richmond, Virginia, USA.,Central Virginia Veterans Healthcare System, Richmond, Virginia, USA
| | - Huiping Zhou
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, USA.,Central Virginia Veterans Healthcare System, Richmond, Virginia, USA
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10
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Wang Y, Pandak WM, Lesnefsky EJ, Hylemon PB, Ren S. 25-Hydroxycholesterol 3-Sulfate Recovers Acetaminophen Induced Acute Liver Injury via Stabilizing Mitochondria in Mouse Models. Cells 2021; 10:3027. [PMID: 34831255 PMCID: PMC8616185 DOI: 10.3390/cells10113027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/29/2021] [Accepted: 11/03/2021] [Indexed: 12/20/2022] Open
Abstract
Acetaminophen (APAP) overdose is one of the most frequent causes of acute liver failure (ALF). N-acetylcysteine (NAC) is currently being used as part of the standard care in the clinic but its usage has been limited in severe cases, in which liver transplantation becomes the only treatment option. Therefore, there still is a need for a specific and effective therapy for APAP induced ALF. In the current study, we have demonstrated that treatment with 25-Hydroxycholesterol 3-Sulfate (25HC3S) not only significantly reduced mortality but also decreased the plasma levels of liver injury markers, including LDH, AST, and ALT, in APAP overdosed mouse models. 25HC3S also decreased the expression of those genes involved in cell apoptosis, stabilized mitochondrial polarization, and significantly decreased the levels of oxidants, malondialdehyde (MDA), and reactive oxygen species (ROS). Whole genome bisulfite sequencing analysis showed that 25HC3S increased demethylation of 5mCpG in key promoter regions and thereby increased the expression of those genes involved in MAPK-ERK and PI3K-Akt signaling pathways. We concluded that 25HC3S may alleviate APAP induced liver injury via up-regulating the master signaling pathways and maintaining mitochondrial membrane polarization. The results suggest that 25HC3S treatment facilitates the recovery and significantly decreases the mortality of APAP induced acute liver injury and has a synergistic effect with NAC in propylene glycol (PG) for the injury.
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Affiliation(s)
| | | | | | | | - Shunlin Ren
- Department of Internal Medicine, McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23249, USA; (Y.W.); (W.M.P.); (E.J.L.); (P.B.H.)
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11
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Wang Y, Hylemon PB, Zhou H. Long Noncoding RNA H19: A Key Player in Liver Diseases. Hepatology 2021; 74:1652-1659. [PMID: 33630308 PMCID: PMC10071419 DOI: 10.1002/hep.31765] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/21/2021] [Accepted: 01/27/2021] [Indexed: 12/12/2022]
Affiliation(s)
- Yanyan Wang
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA
| | - Huiping Zhou
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA
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12
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Zhang Y, Kang JD, Zhao D, Ghosh SS, Wang Y, Tai Y, Gonzalez-Maeso J, Sikaroodi M, Gillevet PM, Lippman HR, Hylemon PB, Zhou H, Bajaj JS. Hepatic Branch Vagotomy Modulates the Gut-Liver-Brain Axis in Murine Cirrhosis. Front Physiol 2021; 12:702646. [PMID: 34248683 PMCID: PMC8268007 DOI: 10.3389/fphys.2021.702646] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/02/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Cirrhosis and hepatic encephalopathy (HE) are linked with an altered gut-liver-brain axis, however, the relative contribution of hepatic vagal innervation is unclear. We aimed to determine the impact of hepatic vagotomy on the gut microbiome, brain, and liver in murine cirrhosis. METHODS 10-15-week-old male C57BL/6 mice with and without hepatic vagotomy underwent carbon tetrachloride (CCl4) gavage for 8 weeks. Frontal cortex [inflammation, glial/microglial activation, BDNF (brain-derived neurotrophic factor)], liver [histology including inflammation and steatosis, fatty acid synthesis (sterol-responsive binding protein-1) SREBP-1, insulin-induced gene-2 (Insig2) and BDNF], and colonic mucosal microbiota (16srRNA microbial sequencing) were evaluated on sacrifice. Conventional mice with and without cirrhosis were compared to vagotomized counterparts. RESULTS Conventional control vs. cirrhosis: Cirrhosis resulted in dysbiosis, hepatic/neuro-inflammation with glial/microglial activation, and low brain BDNF vs. controls. Conventional control vs. vagotomy controls: Vagotomized control mice had a lower colonic dysbiosis than conventional mice but the rest of the hepatic/brain parameters were similar. Conventional cirrhosis vs. vagotomized cirrhosis: After vagotomy + cirrhosis, we found lower dysbiosis but continuing neuroinflammation in the absence of glial/microglial activation vs. conventional cirrhosis. Vagotomy + Cirrhosis groups showed higher hepatic steatosis due to higher SREBP1 and low Insig2 protein and altered activation of key genes involved in hepatic lipid metabolism and inflammation. BDNF levels in the brain were higher but low in the liver in vagotomy + cirrhosis, likely a protective mechanism. CONCLUSIONS Hepatic vagal innervation affects the gut microbial composition, hepatic inflammation and steatosis, and cortical inflammation and BDNF expression and could be a critical modulator of the gut-liver-brain axis with consequences for HE development.
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Affiliation(s)
- Yuan Zhang
- Division of Microbiology and Immunology, Central Virginia Veterans Health Care System, Virginia Commonwealth University, Richmond, VA, United States
| | - Jason D. Kang
- Division of Microbiology and Immunology, Central Virginia Veterans Health Care System, Virginia Commonwealth University, Richmond, VA, United States
| | - Derrick Zhao
- Division of Microbiology and Immunology, Central Virginia Veterans Health Care System, Virginia Commonwealth University, Richmond, VA, United States
| | - Siddartha S. Ghosh
- Division of Nephrology, Virginia Commonwealth University, Richmond, VA, United States
| | - Yanyan Wang
- Division of Microbiology and Immunology, Central Virginia Veterans Health Care System, Virginia Commonwealth University, Richmond, VA, United States
| | - Yunling Tai
- Division of Microbiology and Immunology, Central Virginia Veterans Health Care System, Virginia Commonwealth University, Richmond, VA, United States
| | - Javier Gonzalez-Maeso
- Department of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, United States
| | - Masoumeh Sikaroodi
- Microbiome Analysis Center, George Mason University, Manassas, VA, United States
| | - Patrick M. Gillevet
- Microbiome Analysis Center, George Mason University, Manassas, VA, United States
| | - H. Robert Lippman
- Department of Pathology, Central Virginia Veterans Health Care System, Richmond, VA, United States
| | - Phillip B. Hylemon
- Division of Microbiology and Immunology, Central Virginia Veterans Health Care System, Virginia Commonwealth University, Richmond, VA, United States
| | - Huiping Zhou
- Division of Microbiology and Immunology, Central Virginia Veterans Health Care System, Virginia Commonwealth University, Richmond, VA, United States
| | - Jasmohan S. Bajaj
- Division of Gastroenterology, Hepatology, and Nutrition, Central Virginia Veterans Health Care System, Virginia Commonwealth University, Richmond, VA, United States
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13
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Bajaj JS, Sikaroodi M, Shamsaddini A, Henseler Z, Santiago-Rodriguez T, Acharya C, Fagan A, Hylemon PB, Fuchs M, Gavis E, Ward T, Knights D, Gillevet PM. Interaction of bacterial metagenome and virome in patients with cirrhosis and hepatic encephalopathy. Gut 2021; 70:1162-1173. [PMID: 32998876 DOI: 10.1136/gutjnl-2020-322470] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/18/2020] [Accepted: 08/30/2020] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Altered bacterial composition is associated with disease progression in cirrhosis but the role of virome, especially phages, is unclear. DESIGN Cross-sectional and pre/post rifaximin cohorts were enrolled. Cross-sectional: controls and cirrhotic outpatients (compensated, on lactulose (Cirr-L), on rifaximin (Cirr-LR)) were included and followed for 90-day hospitalisations. Pre/post: compensated cirrhotics underwent stool collection pre/post 8 weeks of rifaximin. Stool metagenomics for bacteria and phages and their correlation networks were analysed in controls versus cirrhosis, within cirrhotics, hospitalised/not and pre/post rifaximin. RESULTS Cross-sectional: 40 controls and 163 cirrhotics (63 compensated, 43 Cirr-L, 57 Cirr-LR) were enrolled. Cirr-L/LR groups were similar on model for end-stage liver disease (MELD) score but Cirr-L developed greater hospitalisations versus Cirr-LR (56% vs 30%, p=0.008). Bacterial alpha/beta diversity worsened from controls through Cirr-LR. While phage alpha diversity was similar, beta diversity was different between groups. Autochthonous bacteria linked negatively, pathobionts linked positively with MELD but only modest phage-MELD correlations were seen. Phage-bacterial correlation network complexity was highest in controls, lowest in Cirr-L and increased in Cirr-LR. Microviridae and Faecalibacterium phages were linked with autochthonous bacteria in Cirr-LR, but not Cirr-L hospitalised patients had greater pathobionts, lower commensal bacteria and phages focused on Streptococcus, Lactococcus and Myoviridae. Pre/post: No changes in alpha/beta diversity of phages or bacteria were seen postrifaximin. Phage-bacterial linkages centred around urease-producing Streptococcus species collapsed postrifaximin. CONCLUSION Unlike bacteria, faecal phages are sparsely linked with cirrhosis characteristics and 90-day outcomes. Phage and bacterial linkages centred on urease-producing, ammonia-generating Streptococcus species were affected by disease progression and rifaximin therapy and were altered in patients who experienced 90-day hospitalisations.
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Affiliation(s)
- Jasmohan S Bajaj
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and Central Virginia Veterans Healthcare System, Richmond, Virginia, USA
| | - Masoumeh Sikaroodi
- Microbiome Analysis Center, George Mason University, Manassas, Virginia, USA
| | | | | | | | - Chathur Acharya
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and Central Virginia Veterans Healthcare System, Richmond, Virginia, USA
| | - Andrew Fagan
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and Central Virginia Veterans Healthcare System, Richmond, Virginia, USA
| | - Phillip B Hylemon
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and Central Virginia Veterans Healthcare System, Richmond, Virginia, USA
| | - Michael Fuchs
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and Central Virginia Veterans Healthcare System, Richmond, Virginia, USA
| | - Edith Gavis
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and Central Virginia Veterans Healthcare System, Richmond, Virginia, USA
| | - Tonya Ward
- Diversigen, New Brighton, Minnesota, USA
| | - Dan Knights
- Diversigen, New Brighton, Minnesota, USA.,Department of Computer Science and Engineering, U, University of Minnesota, Minneapolis, MN, USA.,Minnesota Biotechnology Institute, University of Minnesota, Minneapolis, MN, USA
| | - Patrick M Gillevet
- Microbiome Analysis Center, George Mason University, Manassas, Virginia, USA
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14
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Wang Y, Tai YL, Zhao D, Zhang Y, Yan J, Kakiyama G, Wang X, Gurley EC, Liu J, Liu J, Liu J, Lai G, Hylemon PB, Pandak WM, Chen W, Zhou H. Berberine Prevents Disease Progression of Nonalcoholic Steatohepatitis through Modulating Multiple Pathways. Cells 2021; 10:210. [PMID: 33494295 PMCID: PMC7912096 DOI: 10.3390/cells10020210] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/14/2021] [Accepted: 01/19/2021] [Indexed: 02/07/2023] Open
Abstract
The disease progression of nonalcoholic fatty liver disease (NAFLD) from simple steatosis (NAFL) to nonalcoholic steatohepatitis (NASH) is driven by multiple factors. Berberine (BBR) is an ancient Chinese medicine and has various beneficial effects on metabolic diseases, including NAFLD/NASH. However, the underlying mechanisms remain incompletely understood due to the limitation of the NASH animal models used. Methods: A high-fat and high-fructose diet-induced mouse model of NAFLD, the best available preclinical NASH mouse model, was used. RNAseq, histological, and metabolic pathway analyses were used to identify the potential signaling pathways modulated by BBR. LC-MS was used to measure bile acid levels in the serum and liver. The real-time RT-PCR and Western blot analysis were used to validate the RNAseq data. Results: BBR not only significantly reduced hepatic lipid accumulation by modulating fatty acid synthesis and metabolism but also restored the bile acid homeostasis by targeting multiple pathways. In addition, BBR markedly inhibited inflammation by reducing immune cell infiltration and inhibition of neutrophil activation and inflammatory gene expression. Furthermore, BBR was able to inhibit hepatic fibrosis by modulating the expression of multiple genes involved in hepatic stellate cell activation and cholangiocyte proliferation. Consistent with our previous findings, BBR's beneficial effects are linked with the downregulation of microRNA34a and long noncoding RNA H19, which are two important players in promoting NASH progression and liver fibrosis. Conclusion: BBR is a promising therapeutic agent for NASH by targeting multiple pathways. These results provide a strong foundation for a future clinical investigation.
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Affiliation(s)
- Yanyan Wang
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA; (Y.W.); (Y.-L.T.); (D.Z.); (Y.Z.); (J.Y.); (X.W.); (E.C.G.); (P.B.H.)
- School of Pharmaceutical Science, Anhui University of Chinese Medicine, Qianjiang, Hefei 230012, China;
| | - Yun-Ling Tai
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA; (Y.W.); (Y.-L.T.); (D.Z.); (Y.Z.); (J.Y.); (X.W.); (E.C.G.); (P.B.H.)
| | - Derrick Zhao
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA; (Y.W.); (Y.-L.T.); (D.Z.); (Y.Z.); (J.Y.); (X.W.); (E.C.G.); (P.B.H.)
| | - Yuan Zhang
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA; (Y.W.); (Y.-L.T.); (D.Z.); (Y.Z.); (J.Y.); (X.W.); (E.C.G.); (P.B.H.)
| | - Junkai Yan
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA; (Y.W.); (Y.-L.T.); (D.Z.); (Y.Z.); (J.Y.); (X.W.); (E.C.G.); (P.B.H.)
| | - Genta Kakiyama
- Department of Internal Medicine, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA; (G.K.); (W.M.P.)
| | - Xuan Wang
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA; (Y.W.); (Y.-L.T.); (D.Z.); (Y.Z.); (J.Y.); (X.W.); (E.C.G.); (P.B.H.)
| | - Emily C. Gurley
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA; (Y.W.); (Y.-L.T.); (D.Z.); (Y.Z.); (J.Y.); (X.W.); (E.C.G.); (P.B.H.)
| | - Jinze Liu
- Department of Biostatistics, Virginia Commonwealth University, Richmond, VA 23298, USA;
| | - Jinpeng Liu
- Department of Computer Science, University of Kentucky, Lexington, KY 40506, USA;
| | - Jimin Liu
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON L6M0L8, Canada;
| | - Guanhua Lai
- Department of Pathology, Medical College of Virginia, 23298 Virginia Commonwealth University, Richmond, VA 23298, USA;
| | - Phillip B. Hylemon
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA; (Y.W.); (Y.-L.T.); (D.Z.); (Y.Z.); (J.Y.); (X.W.); (E.C.G.); (P.B.H.)
| | - William M. Pandak
- Department of Internal Medicine, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA; (G.K.); (W.M.P.)
| | - Weidong Chen
- School of Pharmaceutical Science, Anhui University of Chinese Medicine, Qianjiang, Hefei 230012, China;
| | - Huiping Zhou
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298, USA; (Y.W.); (Y.-L.T.); (D.Z.); (Y.Z.); (J.Y.); (X.W.); (E.C.G.); (P.B.H.)
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15
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Kakiyama G, Marques D, Martin R, Takei H, Rodriguez-Agudo D, LaSalle SA, Hashiguchi T, Liu X, Green R, Erickson S, Gil G, Fuchs M, Suzuki M, Murai T, Nittono H, Hylemon PB, Zhou H, Pandak WM. Insulin resistance dysregulates CYP7B1 leading to oxysterol accumulation: a pathway for NAFL to NASH transition. J Lipid Res 2020; 61:1629-1644. [PMID: 33008924 DOI: 10.1194/jlr.ra120000924] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
NAFLD is an important public health issue closely associated with the pervasive epidemics of diabetes and obesity. Yet, despite NAFLD being among the most common of chronic liver diseases, the biological factors responsible for its transition from benign nonalcoholic fatty liver (NAFL) to NASH remain unclear. This lack of knowledge leads to a decreased ability to find relevant animal models, predict disease progression, or develop clinical treatments. In the current study, we used multiple mouse models of NAFLD, human correlation data, and selective gene overexpression of steroidogenic acute regulatory protein (StarD1) in mice to elucidate a plausible mechanistic pathway for promoting the transition from NAFL to NASH. We show that oxysterol 7α-hydroxylase (CYP7B1) controls the levels of intracellular regulatory oxysterols generated by the "acidic/alternative" pathway of cholesterol metabolism. Specifically, we report data showing that an inability to upregulate CYP7B1, in the setting of insulin resistance, results in the accumulation of toxic intracellular cholesterol metabolites that promote inflammation and hepatocyte injury. This metabolic pathway, initiated and exacerbated by insulin resistance, offers insight into approaches for the treatment of NAFLD.
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Affiliation(s)
- Genta Kakiyama
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA; Department of Veterans Affairs, McGuire Veterans Administration Medical Center, Richmond, VA, USA.
| | - Dalila Marques
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA; Department of Veterans Affairs, McGuire Veterans Administration Medical Center, Richmond, VA, USA
| | - Rebecca Martin
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA
| | - Hajime Takei
- Junshin Clinic Bile Acid Institute, Tokyo, Japan
| | - Daniel Rodriguez-Agudo
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA; Department of Veterans Affairs, McGuire Veterans Administration Medical Center, Richmond, VA, USA
| | - Sandra A LaSalle
- Department of Veterans Affairs, McGuire Veterans Administration Medical Center, Richmond, VA, USA
| | | | - Xiaoying Liu
- Department of Medicine, Northwestern University, Chicago, IL, USA
| | - Richard Green
- Department of Medicine, Northwestern University, Chicago, IL, USA
| | - Sandra Erickson
- School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Gregorio Gil
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA, USA; Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA
| | - Michael Fuchs
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA; Department of Veterans Affairs, McGuire Veterans Administration Medical Center, Richmond, VA, USA
| | - Mitsuyoshi Suzuki
- Department of Pediatrics, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Tsuyoshi Murai
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Hokkaido, Japan
| | | | - Phillip B Hylemon
- Department of Veterans Affairs, McGuire Veterans Administration Medical Center, Richmond, VA, USA; Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA; Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA
| | - Huiping Zhou
- Department of Veterans Affairs, McGuire Veterans Administration Medical Center, Richmond, VA, USA; Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA; Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA
| | - William M Pandak
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA; Department of Veterans Affairs, McGuire Veterans Administration Medical Center, Richmond, VA, USA; Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA
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16
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Wang Y, Chen L, Pandak WM, Heuman D, Hylemon PB, Ren S. High Glucose Induces Lipid Accumulation via 25-Hydroxycholesterol DNA-CpG Methylation. iScience 2020; 23:101102. [PMID: 32408171 PMCID: PMC7225732 DOI: 10.1016/j.isci.2020.101102] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/01/2020] [Accepted: 04/22/2020] [Indexed: 12/12/2022] Open
Abstract
This work investigates the relationship between high-glucose (HG) culture, CpG methylation of genes involved in cell signaling pathways, and the regulation of carbohydrate and lipid metabolism in hepatocytes. The results indicate that HG leads to an increase in nuclear 25-hydroxycholesterol (25HC), which specifically activates DNA methyltransferase-1 (DNMT1), and regulates gene expression involved in intracellular lipid metabolism. The results show significant increases in 5mCpG levels in at least 2,225 genes involved in 57 signaling pathways. The hypermethylated genes directly involved in carbohydrate and lipid metabolism are of PI3K, cAMP, insulin, insulin secretion, diabetic, and NAFLD signaling pathways. The studies indicate a close relationship between the increase in nuclear 25HC levels and activation of DNMT1, which may regulate lipid metabolism via DNA CpG methylation. Our results indicate an epigenetic regulation of hepatic cell metabolism that has relevance to some common diseases such as non-alcoholic fatty liver disease and metabolic syndrome.
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Affiliation(s)
- Yaping Wang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China,Department of Internal Medicine, Virginia Commonwealth University/McGuire VA Medical Centre, Research 151, 1201 Broad Rock Boulevard, Richmond, VA 23249, USA
| | - Lanming Chen
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - William M. Pandak
- Department of Internal Medicine, Virginia Commonwealth University/McGuire VA Medical Centre, Research 151, 1201 Broad Rock Boulevard, Richmond, VA 23249, USA
| | - Douglas Heuman
- Department of Internal Medicine, Virginia Commonwealth University/McGuire VA Medical Centre, Research 151, 1201 Broad Rock Boulevard, Richmond, VA 23249, USA
| | - Phillip B. Hylemon
- Department of Internal Medicine, Virginia Commonwealth University/McGuire VA Medical Centre, Research 151, 1201 Broad Rock Boulevard, Richmond, VA 23249, USA
| | - Shunlin Ren
- Department of Internal Medicine, Virginia Commonwealth University/McGuire VA Medical Centre, Research 151, 1201 Broad Rock Boulevard, Richmond, VA 23249, USA.
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17
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Zhang Y, Yang W, Wang Y, Liu R, Li X, Zhao D, Wu J, Tai Y, Ge P, Wang X, Gurley EC, Hylemon PB, Zhou H. Sphingosine kinase 2 plays a critical role in bile acid‐induced cholestatic liver injury
via
regulating miR‐155 and macrophage activation. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.07289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | | | | | - Jilin Wu
- Virginia Commonwealth University
| | | | - Pu Ge
- Virginia Commonwealth University
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18
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Wang Y, Xiang D, Chen W, Zhao D, Gurley E, Wang X, Pu G, Tai Y, Zhang Y, Chen Z, Wu J, Yan J, Hylemon PB, Zhou H. Berberine attenuates cholestatic liver and bile duct injury in Mdr2
−/−
mice by maintaining bile acid homeostasis. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.04758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | | | | | - Ge Pu
- Virginia Commonwealth University
| | | | | | | | - Jilin Wu
- Virginia Commonwealth University
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19
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Liu R, Kang JD, Sartor RB, Sikaroodi M, Fagan A, Gavis EA, Zhou H, Hylemon PB, Herzog JW, Li X, Lippman RH, Gonzalez-Maeso J, Wade JB, Ghosh S, Gurley E, Gillevet PM, Bajaj JS. Neuroinflammation in Murine Cirrhosis Is Dependent on the Gut Microbiome and Is Attenuated by Fecal Transplant. Hepatology 2020; 71:611-626. [PMID: 31220352 PMCID: PMC6923631 DOI: 10.1002/hep.30827] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 06/16/2019] [Indexed: 12/14/2022]
Abstract
Cirrhosis and hepatic encephalopathy (HE) is associated with an altered gut-liver-brain axis. Fecal microbial transplant (FMT) after antibiotics improves outcomes in HE, but the impact on brain function is unclear. The aim of this study is to determine the effect of colonization using human donors in germ-free (GF) mice on the gut-liver-brain axis. GF and conventional mice were made cirrhotic using carbon tetrachloride and compared with controls in GF and conventional state. Additional GF mice were colonized with stool from controls (Ctrl-Hum) and patients with cirrhosis (Cirr-Hum). Stools from patients with HE cirrhosis after antibiotics were pooled (pre-FMT). Stools from the same patients 15 days after FMT from a healthy donor were also pooled (post-FMT). Sterile supernatants were created from pre-FMT and post-FMT samples. GF mice were colonized using stools/sterile supernatants. For all mice, frontal cortex, liver, and small/large intestines were collected. Cortical inflammation, synaptic plasticity and gamma-aminobutyric acid (GABA) signaling, and liver inflammation and intestinal 16s ribosomal RNA microbiota sequencing were performed. Conventional cirrhotic mice had higher degrees of neuroinflammation, microglial/glial activation, GABA signaling, and intestinal dysbiosis compared with other groups. Cirr-Hum mice had greater neuroinflammation, microglial/glial activation, and GABA signaling and lower synaptic plasticity compared with Ctrl-Hum mice. This was associated with greater dysbiosis but no change in liver histology. Pre-FMT material colonization was associated with neuroinflammation and microglial activation and dysbiosis, which was reduced significantly with post-FMT samples. Sterile pre-FMT and post-FMT supernatants did not affect brain parameters. Liver inflammation was unaffected. Conclusion: Fecal microbial colonization from patients with cirrhosis results in higher degrees of neuroinflammation and activation of GABAergic and neuronal activation in mice regardless of cirrhosis compared with those from healthy humans. Reduction in neuroinflammation by using samples from post-FMT patients to colonize GF mice shows a direct effect of fecal microbiota independent of active liver inflammation or injury.
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Affiliation(s)
- Runping Liu
- Division of Microbiology and Immunology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Jason D. Kang
- Division of Microbiology and Immunology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - R. Balfour Sartor
- National Gnotobiotic Rodent Resource Center, Departments of Medicine, Microbiology, and Immunology, University of North Carolina, Chapel Hill, NC
| | | | - Andrew Fagan
- Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Edith A. Gavis
- Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Huiping Zhou
- Division of Microbiology and Immunology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Phillip B. Hylemon
- Division of Microbiology and Immunology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Jeremy W. Herzog
- National Gnotobiotic Rodent Resource Center, Departments of Medicine, Microbiology, and Immunology, University of North Carolina, Chapel Hill, NC
| | - Xiaojiaoyang Li
- Division of Microbiology and Immunology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Robert H. Lippman
- Department of Pathology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Javier Gonzalez-Maeso
- Department of Physiology and Biophysics, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - James B. Wade
- Department of Psychiatry, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Siddhartha Ghosh
- Division of Nephrology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Emily Gurley
- Division of Microbiology and Immunology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | | | - Jasmohan S. Bajaj
- Division of Gastroenterology, Hepatology, and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
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20
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Li X, Liu R, Wang Y, Zhu W, Zhao D, Wang X, Yang H, Gurley EC, Chen W, Hylemon PB, Zhou H. Cholangiocyte-Derived Exosomal lncRNA H19 Promotes Macrophage Activation and Hepatic Inflammation under Cholestatic Conditions. Cells 2020; 9:cells9010190. [PMID: 31940841 PMCID: PMC7016679 DOI: 10.3390/cells9010190] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/07/2020] [Accepted: 01/08/2020] [Indexed: 02/07/2023] Open
Abstract
Activation of hepatic macrophages represents the critical driving force to promote cholestatic liver injury. Exosomes, as important small extracellular vesicles released by almost all types of cells, contribute to intercellular communication. We previously reported that cholangiocyte-derived exosomal long noncoding RNA (lncRNA) H19 plays a vital role in disrupting bile acid homeostasis in hepatocytes and promoting the activation of hepatic stellate cells (HSCs). Exosomal H19 derived from cholangiocytes was rapidly taken up by Kupffer cells. However, the mechanistic links between exosomal lncRNA H19 and macrophage-driven inflammation in cholestasis remain unclear. Here, we reported that the hepatic H19 level was closely correlated with macrophage activation and hepatic fibrosis in both Mdr2-/- and bile duct ligation (BDL) cholestatic mouse models, as well as in human primary sclerosing cholangitis (PSC) and primary biliary cholangitis (PBC) patients. Exosomal H19 significantly induced the expression and secretion of chemokine (C–C motif) ligand 2 (CCL-2) and interleukin 6 (IL-6) in Kupffer cells. H19-enriched exosomes enhanced the activation M1 polarization of Kupffer cells and promoted the recruitment and differentiation of bone marrow-derived macrophages, which were inhibited by a CCL-2 pharmacological inhibitor. In conclusion, Cholangiocyte-derived exosomal H19 played a critical role in macrophage activation, differentiation, and chemotaxis through CCL-2/CCR-2 signaling pathways, which represent a therapeutic target for cholestatic liver diseases.
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Affiliation(s)
- Xiaojiaoyang Li
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA; (X.L.); (R.L.); (Y.W.); (W.Z.); (D.Z.); (X.W.); (H.Y.); (E.C.G.); (P.B.H.)
- Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Runping Liu
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA; (X.L.); (R.L.); (Y.W.); (W.Z.); (D.Z.); (X.W.); (H.Y.); (E.C.G.); (P.B.H.)
- Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Yanyan Wang
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA; (X.L.); (R.L.); (Y.W.); (W.Z.); (D.Z.); (X.W.); (H.Y.); (E.C.G.); (P.B.H.)
| | - Weiwei Zhu
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA; (X.L.); (R.L.); (Y.W.); (W.Z.); (D.Z.); (X.W.); (H.Y.); (E.C.G.); (P.B.H.)
| | - Derrick Zhao
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA; (X.L.); (R.L.); (Y.W.); (W.Z.); (D.Z.); (X.W.); (H.Y.); (E.C.G.); (P.B.H.)
- Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Xuan Wang
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA; (X.L.); (R.L.); (Y.W.); (W.Z.); (D.Z.); (X.W.); (H.Y.); (E.C.G.); (P.B.H.)
- Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Hang Yang
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA; (X.L.); (R.L.); (Y.W.); (W.Z.); (D.Z.); (X.W.); (H.Y.); (E.C.G.); (P.B.H.)
| | - Emily C. Gurley
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA; (X.L.); (R.L.); (Y.W.); (W.Z.); (D.Z.); (X.W.); (H.Y.); (E.C.G.); (P.B.H.)
- Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Weidong Chen
- School of Pharmaceutical Science, Anhui University of Chinese Medicine, Hefei 230031, China;
| | - Phillip B. Hylemon
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA; (X.L.); (R.L.); (Y.W.); (W.Z.); (D.Z.); (X.W.); (H.Y.); (E.C.G.); (P.B.H.)
- Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Huiping Zhou
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA; (X.L.); (R.L.); (Y.W.); (W.Z.); (D.Z.); (X.W.); (H.Y.); (E.C.G.); (P.B.H.)
- Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA 23298, USA
- Correspondence: ; Tel.: +804-828-6817; Fax: +804-828-0676
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21
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Bajaj JS, Salzman N, Acharya C, Takei H, Kakiyama G, Fagan A, White MB, Gavis EA, Holtz ML, Hayward M, Nittono H, Hylemon PB, Cox IJ, Williams R, Taylor-Robinson SD, Sterling RK, Matherly SC, Fuchs M, Lee H, Puri P, Stravitz RT, Sanyal AJ, Ajayi L, Le Guennec A, Atkinson RA, Siddiqui MS, Luketic V, Pandak WM, Sikaroodi M, Gillevet PM. Microbial functional change is linked with clinical outcomes after capsular fecal transplant in cirrhosis. JCI Insight 2019; 4:133410. [PMID: 31751317 PMCID: PMC6975263 DOI: 10.1172/jci.insight.133410] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 11/13/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUNDHepatic encephalopathy (HE) is associated with poor outcomes. A prior randomized, pilot trial demonstrated safety after oral capsular fecal microbial transplant (FMT) in HE, with favorable changes in microbial composition and cognition. However, microbial functional changes are unclear. The aim of this study was to determine the effect of FMT on the gut-brain axis compared with placebo, using microbial function based on bile acids (BAs), inflammation (serum IL-6, LPS-binding protein [LBP]), and their association with EncephalApp.METHODSTwenty cirrhotic patients were randomized 1:1 into groups that received 1-time FMT capsules from a donor enriched in Lachnospiraceae and Ruminococcaceae or placebo capsules, with 5-month follow-up for safety outcomes. Stool microbiota and BA; serum IL-6, BA, and LBP; and EncephalApp were analyzed at baseline and 4 weeks after FMT/placebo. Correlation networks among microbiota, BAs, EncephalApp, IL-6, and LBP were performed before/after FMT.RESULTSFMT-assigned participants had 1 HE recurrence and 2 unrelated infections. Six placebo-assigned participants developed negative outcomes. FMT, but not placebo, was associated with reduced serum IL-6 and LBP and improved EncephalApp. FMT-assigned participants demonstrated higher deconjugation and secondary BA formation in feces and serum compared with baseline. No change was seen in placebo. Correlation networks showed greater complexity after FMT compared with baseline. Beneficial taxa, such as Ruminococcaceae, Verrucomicrobiaceae, and Lachnospiraceae, were correlated with cognitive improvement and decrease in inflammation after FMT. Fecal/serum secondary/primary ratios and PiCRUST secondary BA pathways did not increase in participants who developed poor outcomes.CONCLUSIONGut microbial function in cirrhosis is beneficially affected by capsular FMT, with improved inflammation and cognition. Lower secondary BAs in FMT recipients could select for participants who develop negative outcomes.TRIAL REGISTRATIONClinicaltrials.gov NCT03152188.FUNDINGNational Center for Advancing Translational Sciences NIH grant R21TR002024, VA Merit Review grant 2I0CX001076, the United Kingdom National Institute for Health Research Biomedical Facility at Imperial College London, the British Heart Foundation, Wellcome Trust, and King's College London.
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Affiliation(s)
- Jasmohan S. Bajaj
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Nita Salzman
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Chathur Acharya
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Hajime Takei
- Junshin Clinic Bile Acid Institute, Meguro-Ku, Tokyo, Japan
| | - Genta Kakiyama
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Andrew Fagan
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Melanie B. White
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Edith A. Gavis
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Mary L. Holtz
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Michael Hayward
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | | | - Phillip B. Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - I. Jane Cox
- Institute for Hepatology London, Foundation for Liver Research, London, United Kingdom
| | - Roger Williams
- Institute for Hepatology London, Foundation for Liver Research, London, United Kingdom
| | | | - Richard K. Sterling
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Scott C. Matherly
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Michael Fuchs
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Hannah Lee
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Puneet Puri
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - R. Todd Stravitz
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Arun J. Sanyal
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Lola Ajayi
- Institute for Hepatology London, Foundation for Liver Research, London, United Kingdom
| | - Adrien Le Guennec
- Randall Centre for Cell & Molecular Biophysics and Centre for Biomolecular Spectroscopy, King’s College London, London, United Kingdom
| | - R. Andrew Atkinson
- Randall Centre for Cell & Molecular Biophysics and Centre for Biomolecular Spectroscopy, King’s College London, London, United Kingdom
| | - Mohammad S. Siddiqui
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Velimir Luketic
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - William M. Pandak
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Masoumeh Sikaroodi
- Microbiome Analysis Center, George Mason University, Manassas, Virginia, USA
| | - Patrick M. Gillevet
- Microbiome Analysis Center, George Mason University, Manassas, Virginia, USA
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22
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Bajaj JS, Fagan A, Sikaroodi M, Kakiyama G, Takei H, Degefu Y, Pandak WM, Hylemon PB, Fuchs M, John B, Heuman DM, Gavis E, Nittono H, Patil R, Gillevet PM. Alterations in Skin Microbiomes of Patients With Cirrhosis. Clin Gastroenterol Hepatol 2019; 17:2581-2591.e15. [PMID: 30905718 PMCID: PMC6754819 DOI: 10.1016/j.cgh.2019.03.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 03/12/2019] [Accepted: 03/14/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Patients with cirrhosis have intestinal dysbiosis and are prone to itching and skin or soft-tissue infections. The skin microbiome, and its relationship with intestinal microbiome, have not been characterized. We investigated alterations in skin microbiota of patients with cirrhosis and their association with intestinal microbiota and modulators of itch. METHODS We collected skin swabs at 7 sites and blood and stool samples from 20 healthy individuals (control subjects; mean age, 59 years) and 50 patients with cirrhosis (mean age, 61 years; mean model for end-stage disease score, 12; 20 with decompensation). Skin and stool samples were analyzed by 16s rRNA sequencing and serum samples were analyzed by liquid chromatography and mass spectrometry for levels of bile acids (BAs) and by an ELISA for autotaxin (an itch modulator). Participants were analyzed by the visual analog itch scale (VAS, 0-10,10 = maximum intensity). Data were compared between groups (cirrhosis vs control subjects, with vs without decompensation, VAS 5 or higher vs less than 5). Correlation networks between serum levels of BAs and skin microbiomes were compared between patients with cirrhosis with vs without itching. RESULTS The composition of microbiomes at all skin sites differed between control subjects and patients with cirrhosis and between patients with compensated vs decompensated cirrhosis. Skin microbiomes of patients with cirrhosis (especially those with decompensation) contained a higher relative abundance of Gammaproteobacteria, Streptococaceae, and Staphylococcaceae, and fecal microbiomes contained a higher relative abundance of Gammaproteobacteria, than control subjects. These bacterial taxa were associated with serum levels of autotaxin and BAs, which were higher in patients with VAS scores ≥5. Based on network statistics, microbial and BA interactions at all sites were more complex in patients with greater levels of itching in the shin, the most common site of itch. CONCLUSIONS We identified alterations in skin microbiome of patients with cirrhosis (in Gammaproteobacteria, Streptococcaceae, and Staphylococcaceae)-especially in patients with decompensation; fecal microbiomes of patients with cirrhosis had a higher relative abundance of Gammaproteobacteria than control subjects. These specific microbial taxa are associated with itching intensity and itch modulators, such as serum levels of BAs and autotaxin.
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Affiliation(s)
- Jasmohan S Bajaj
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia.
| | - Andrew Fagan
- Division of Gastroenterology, Hepatology and Nutrition,
Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA,
USA
| | - Masoumeh Sikaroodi
- Center for Microbiome Analysis, George Mason University,
Manassas, VA, USA
| | - Genta Kakiyama
- Division of Gastroenterology, Hepatology and Nutrition,
Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA,
USA
| | - Hajme Takei
- Junshin Clinic Bile Acid Institute, Tokyo, Japan
| | - Yordanos Degefu
- Center for Microbiome Analysis, George Mason University,
Manassas, VA, USA
| | - William M Pandak
- Division of Gastroenterology, Hepatology and Nutrition,
Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA,
USA
| | - Phillip B Hylemon
- Division of Gastroenterology, Hepatology and Nutrition,
Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA,
USA
| | - Michael Fuchs
- Division of Gastroenterology, Hepatology and Nutrition,
Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA,
USA
| | - Binu John
- Division of Gastroenterology, Hepatology and Nutrition,
Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA,
USA
| | - Douglas M Heuman
- Division of Gastroenterology, Hepatology and Nutrition,
Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA,
USA
| | - Edith Gavis
- Division of Gastroenterology, Hepatology and Nutrition,
Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA,
USA
| | | | - Rohan Patil
- Center for Microbiome Analysis, George Mason University,
Manassas, VA, USA
| | - Patrick M Gillevet
- Center for Microbiome Analysis, George Mason University,
Manassas, VA, USA
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23
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Xiao Y, Liu R, Li X, Gurley EC, Hylemon PB, Lu Y, Zhou H, Cai W. Long Noncoding RNA H19 Contributes to Cholangiocyte Proliferation and Cholestatic Liver Fibrosis in Biliary Atresia. Hepatology 2019; 70:1658-1673. [PMID: 31063660 PMCID: PMC6819224 DOI: 10.1002/hep.30698] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 04/24/2019] [Indexed: 02/06/2023]
Abstract
Biliary atresia (BA) is a neonatal liver disease featuring cholestasis and severe liver fibrosis (LF). Despite advances in the development of surgical treatment, lacking an early diagnostic marker and intervention of LF invariably leads to death from end-stage liver disease in the early years of life. We previously reported that knockout of sphingosine 1-phosphate receptor 2 (S1PR2) protected mice from bile duct ligation (BDL)-induced cholangiocyte proliferation and LF. Our recent studies further showed that both hepatic and serum exosomal long noncoding RNA H19 (lncRNAH19) levels are correlated with cholestatic injury in multidrug resistance 2 knockout (Mdr2-/- ) mice. However, the role of lncRNAH19 in BA progression remains unclear. Here, we show that both hepatic and serum exosomal H19 levels are positively correlated with severity of fibrotic liver injuries in BA patients. H19 deficiency protects mice from BDL-induced cholangiocyte proliferation and LF by inhibiting bile-acid-induced expression and activation of S1PR2 and sphingosine kinase 2 (SphK2). Furthermore, H19 acts as a molecular sponge for members of the microRNA let-7 family, which results in up-regulation of high-mobility group AT-hook 2 (HMGA2), a known target of let-7 and enhancement of biliary proliferation. Conclusion: These results indicate that H19 plays a critical role in cholangiocyte proliferation and cholestatic liver injury in BA by regulating the S1PR2/SphK2 and let-7/HMGA2 axis. Serum exosomal H19 may represent a noninvasive diagnostic biomarker and potential therapeutic target for BA.
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Affiliation(s)
- Yongtao Xiao
- Department of Pediatric Surgery, Xin Hua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Institute of Pediatric Research, Shanghai, China
- Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China
| | - Runping Liu
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA
| | - Xiaojiaoyang Li
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA
| | - Emily C. Gurley
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA
| | - Phillip B. Hylemon
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA
| | - Ying Lu
- Department of Pediatric Surgery, Xin Hua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Institute of Pediatric Research, Shanghai, China
- Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China
| | - Huiping Zhou
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, VA
| | - Wei Cai
- Department of Pediatric Surgery, Xin Hua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Institute of Pediatric Research, Shanghai, China
- Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China
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24
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Liu R, Li X, Zhu W, Wang Y, Zhao D, Wang X, Gurley EC, Liang G, Chen W, Lai G, Pandak WM, Lippman HR, Bajaj JS, Hylemon PB, Zhou H. Cholangiocyte-Derived Exosomal Long Noncoding RNA H19 Promotes Hepatic Stellate Cell Activation and Cholestatic Liver Fibrosis. Hepatology 2019; 70:1317-1335. [PMID: 30985008 PMCID: PMC6783323 DOI: 10.1002/hep.30662] [Citation(s) in RCA: 144] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 03/29/2019] [Indexed: 12/16/2022]
Abstract
Activation of hepatic stellate cells (HSCs) represents the primary driving force to promote the progression of chronic cholestatic liver diseases. We previously reported that cholangiocyte-derived exosomal long noncoding RNA-H19 (lncRNA-H19) plays a critical role in promoting cholestatic liver injury. However, it remains unclear whether cholangiocyte-derived lncRNA-H19 regulates HSC activation, which is the major focus of this study. Both bile duct ligation (BDL) and Mdr2 knockout (Mdr2-/- ) mouse models were used. Wild-type and H19maternalΔExon1/+ (H19KO) mice were subjected to BDL. Mdr2-/- H19maternalΔExon1/+ (DKO) mice were generated. Exosomes isolated from cultured mouse and human cholangiocytes or mouse serum were used for in vivo transplantation and in vitro studies. Fluorescence-labeled exosomes and flow cytometry were used to monitor exosome uptake by hepatic cells. Collagen gel contraction and bromodeoxyuridine assays were used to determine the effect of exosomal-H19 on HSC activation and proliferation. Mouse and human primary sclerosing cholangitis (PSC)/primary biliary cholangitis (PBC) liver samples were analyzed by real-time PCR, western blot analysis, histology, and immunohistochemistry. The results demonstrated that hepatic H19 level was closely correlated with the severity of liver fibrosis in both mouse models and human patients with PSC and PBC. H19 deficiency significantly protected mice from liver fibrosis in BDL and Mdr2-/- mice. Transplanted cholangiocyte-derived H19-enriched exosomes were rapidly and preferentially taken up by HSCs and HSC-derived fibroblasts, and promoted liver fibrosis in BDL-H19KO mice and DKO mice. H19-enriched exosomes enhanced transdifferentiation of cultured mouse primary HSCs and promoted proliferation and matrix formation in HSC-derived fibroblasts. Conclusion: Cholangiocyte-derived exosomal H19 plays a critical role in the progression of cholestatic liver fibrosis by promoting HSC differentiation and activation and represents a potential diagnostic biomarker and therapeutic target for cholangiopathies.
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Affiliation(s)
- Runping Liu
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA;,Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University
| | - Xiaojiaoyang Li
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA;,Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University
| | - Weiwei Zhu
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA;,School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yanyan Wang
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA;,School of Pharmaceutical Science, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Derrick Zhao
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA;,Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University
| | - Xuan Wang
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA;,Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University
| | - Emily C. Gurley
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA;,Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University
| | - Guang Liang
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Weidong Chen
- School of Pharmaceutical Science, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Guanhua Lai
- Department of Pathology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia, USA
| | - William M Pandak
- Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University
| | - H. Robert Lippman
- Department of Pathology and Laboratory Medicine, McGuire Veterans Affairs Medical Center, Richmond, Virginia, USA
| | - Jasmohan S. Bajaj
- Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University
| | - Phillip B. Hylemon
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA;,Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University
| | - Huiping Zhou
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA;,Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University;,Address correspondence to: Huiping Zhou, Ph.D, Department of Microbiology & Immunology, Virginia Commonwealth University, McGuire Veterans Affairs Medical Center, 1220 East Broad Street, MMRB-5044, Richmond, VA 23298-0678, USA, Tel: 804-828-6817; Fax: 804-828-0676,
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25
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Kwong EK, Liu R, Zhao D, Li X, Zhu W, Wang X, Gurley EC, Lai G, Liu J, Hylemon PB, Zhou H. The role of sphingosine kinase 2 in alcoholic liver disease. Dig Liver Dis 2019; 51:1154-1163. [PMID: 31003959 PMCID: PMC6682426 DOI: 10.1016/j.dld.2019.03.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/18/2019] [Accepted: 03/19/2019] [Indexed: 02/08/2023]
Abstract
Alcoholic liver disease (ALD) is one of the most common liver diseases worldwide. However, the exact mechanisms underlying ALD remain unclear. Previous studies reported that sphingosine kinase 2 (SphK2) plays an essential role in regulating hepatic lipid metabolism. In the current study, we demonstrate that compared to wild-type (WT) mice, SphK2 deficient (SphK2-/-) mice exhibited a greater degree of liver injury and hepatic lipid accumulation after feeding with an alcohol diet for 60 days. This is accompanied by a down-regulation of steroid 7-alpha-hydroxylase (Cyp7b1) and an up-regulation of pro-inflammatory mediators (Tnfα, F4/80, Il-1β). In vitro experiments showed that alcohol induced SphK2 expression in mouse primary hepatocytes and cultured mouse macrophages. Furthermore, alcohol feeding induced a more severe intestinal barrier dysfunction in SphK2-/- mice than WT mice. Deficiency of SphK2 impaired the growth of intestinal organoids. Finally, SphK2 expression levels were down-regulated in the livers of human patients with alcoholic cirrhosis and hepatocellular carcinoma compared to healthy controls. In summary, these findings suggest that SphK2 is a crucial regulator of hepatic lipid metabolism and that modulating the SphK2-mediated signaling pathway may represent a novel therapeutic strategy for the treatment of ALD and other metabolic liver diseases.
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Affiliation(s)
- Eric K. Kwong
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Runping Liu
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Derrick Zhao
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Xiaojiaoyang Li
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Weiwei Zhu
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Xuan Wang
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Emily C. Gurley
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Guanhua Lai
- Department of Pathology, Medical College of Virginia, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Jimin Liu
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Phillip B. Hylemon
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Huiping Zhou
- Department of Microbiology and Immunology, Medical College of Virginia and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
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26
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Kakiyama G, Marques D, Takei H, Nittono H, Erickson S, Fuchs M, Rodriguez-Agudo D, Gil G, Hylemon PB, Zhou H, Bajaj JS, Pandak WM. Mitochondrial oxysterol biosynthetic pathway gives evidence for CYP7B1 as controller of regulatory oxysterols. J Steroid Biochem Mol Biol 2019; 189:36-47. [PMID: 30710743 DOI: 10.1016/j.jsbmb.2019.01.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 01/17/2019] [Accepted: 01/22/2019] [Indexed: 12/13/2022]
Abstract
The aim of this paper was to more completely study the mitochondrial CYP27A1 initiated acidic pathway of cholesterol metabolism. The mitochondrial CYP27A1 initiated pathway of cholesterol metabolism (acidic pathway) is known to synthesize two well-described vital regulators of cholesterol/lipid homeostasis, (25R)-26-hydroxycholesterol (26HC) and 25-hydroxycholesterol (25HC). Both 26HC and 25HC have been shown to be subsequently 7α-hydroxylated by Cyp7b1; reducing their regulatory abilities and furthering their metabolism to chenodeoxycholic acid (CDCA). Cholesterol delivery into the inner mitochondria membrane, where CYP27A1 is located, is considered the pathway's only rate-limiting step. To further explore the pathway, we increased cholesterol transport into mitochondrial CYP27A1 by selectively increased expression of the gene encoding the steroidogenic acute transport protein (StarD1). StarD1 overexpression led to an unanticipated marked down-regulation of oxysterol 7α-hydroxylase (Cyp7b1), a marked increase in 26HC, and the formation of a third vital regulatory oxysterol, 24(S)-hydroxycholesterol (24HC), in B6/129 mice livers. To explore the further metabolism of 24HC, as well as, 25HC and 26HC, characterizations of oxysterols and bile acids using three murine models (StarD1 overexpression, Cyp7b1-/-, Cyp27a1-/-) and human Hep G2 cells were conducted. This report describes the discovery of a new mitochondrial-initiated pathway of oxysterol/bile acid biosynthesis. Just as importantly, it provides evidence for CYP7B1 as a key regulator of three vital intracellular regulatory oxysterol levels.
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Affiliation(s)
- Genta Kakiyama
- Department of Internal Medicine, Virginia Commonwealth University, United States; Department of Veterans Affairs, Richmond, VA, United States.
| | - Dalila Marques
- Department of Internal Medicine, Virginia Commonwealth University, United States; Department of Veterans Affairs, Richmond, VA, United States
| | - Hajime Takei
- Junshin Clinic Bile Acid Institute, Tokyo, Japan
| | | | - Sandra Erickson
- School of Medicine, University of California, San Francisco, United States
| | - Michael Fuchs
- Department of Internal Medicine, Virginia Commonwealth University, United States; Department of Veterans Affairs, Richmond, VA, United States
| | - Daniel Rodriguez-Agudo
- Department of Internal Medicine, Virginia Commonwealth University, United States; Department of Veterans Affairs, Richmond, VA, United States
| | - Gregorio Gil
- Department of Biochemistry & Molecular Biology, Virginia Commonwealth University, United States
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University, United States; Department of Veterans Affairs, Richmond, VA, United States
| | - Huiping Zhou
- Department of Microbiology and Immunology, Virginia Commonwealth University, United States; Department of Veterans Affairs, Richmond, VA, United States
| | - Jasmohan S Bajaj
- Department of Internal Medicine, Virginia Commonwealth University, United States; Department of Veterans Affairs, Richmond, VA, United States
| | - William M Pandak
- Department of Internal Medicine, Virginia Commonwealth University, United States; Department of Veterans Affairs, Richmond, VA, United States
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27
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Liu R, Ahluwalia V, Kang JD, Ghosh SS, Zhou H, Li Y, Zhao D, Gurley E, Li X, White MB, Fagan A, Lippman HR, Wade JB, Hylemon PB, Bajaj JS. Effect of Increasing Age on Brain Dysfunction in Cirrhosis. Hepatol Commun 2019; 3:63-73. [PMID: 30619995 PMCID: PMC6312655 DOI: 10.1002/hep4.1286] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 10/24/2018] [Indexed: 12/28/2022] Open
Abstract
Patients with cirrhosis are growing older, which could have an impact on brain dysfunction beyond hepatic encephalopathy. Our aim was to study the effect of concomitant aging and cirrhosis on brain inflammation and degeneration using human and animal experiments. For the human study, age-matched patients with cirrhosis and controls between 65 and 85 years underwent cognitive testing, quality of life (QOL) assessment, and brain magnetic resonance (MR) spectroscopy and resting state functional MR imaging (rs-fMRI) analysis. Data were compared between groups. For the animal study, young (10-12 weeks) and old (1.5 years) C57BL/6 mice were given either CCl4 gavage to develop cirrhosis or a vehicle control and were followed for 12 weeks. Cortical messenger RNA (mRNA) expression of inflammatory mediators (interleukin [IL]-6, IL-1β, transforming growth factor β [TGF-β], and monocyte chemoattractant protein 1), sirtuin-1, and gamma-aminobutyric acid (GABA)-ergic synaptic plasticity (neuroligin-2 [NLG2], discs large homolog 4 [DLG4], GABA receptor, subunit gamma 1/subunit B1 [GABRG1/B1]) were analyzed and compared between younger/older control and cirrhotic mice. The human study included 46 subjects (23/group). Patients with cirrhosis had worse QOL and cognition. On MR spectroscopy, patients with cirrhosis had worse changes related to ammonia and lower N-acetyl aspartate, whereas rs-fMRI analysis revealed that these patients demonstrated functional connectivity changes in the frontoparietal cortical region compared to controls. Results of the animal study showed that older mice required lower CCl4 to reach cirrhosis. Older mice, especially with cirrhosis, demonstrated higher cortical inflammatory mRNA expression of IL-6, IL-1β, and TGF-β; higher glial and microglial activation; and lower sirtuin-1 expression compared to younger mice. Older mice also had lower expression of DLG4, an excitatory synaptic organizer, and higher NLG2 and GABRG1/B1 receptor expression, indicating a predominantly inhibitory synaptic organization. Conclusion: Aging modulates brain changes in cirrhosis; this can affect QOL, cognition, and brain connectivity. Cortical inflammation, microglial activation, and altered GABA-ergic synaptic plasticity could be contributory.
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Affiliation(s)
- Runping Liu
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth UniversityRichmondVA
- Microbiology and ImmunologyVirginia Commonwealth UniversityRichmondVA
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
| | - Vishwadeep Ahluwalia
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth UniversityRichmondVA
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
| | - Jason D. Kang
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth UniversityRichmondVA
- Microbiology and ImmunologyVirginia Commonwealth UniversityRichmondVA
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
| | - Siddhartha S. Ghosh
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
- Division of NephrologyVirginia Commonwealth UniversityRichmondVA
| | - Huiping Zhou
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth UniversityRichmondVA
- Microbiology and ImmunologyVirginia Commonwealth UniversityRichmondVA
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
| | - Yunzhou Li
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth UniversityRichmondVA
- Microbiology and ImmunologyVirginia Commonwealth UniversityRichmondVA
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
| | - Derrick Zhao
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth UniversityRichmondVA
- Microbiology and ImmunologyVirginia Commonwealth UniversityRichmondVA
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
| | - Emily Gurley
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth UniversityRichmondVA
- Microbiology and ImmunologyVirginia Commonwealth UniversityRichmondVA
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
| | - Xiaojiaoyang Li
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth UniversityRichmondVA
- Microbiology and ImmunologyVirginia Commonwealth UniversityRichmondVA
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
| | - Melanie B. White
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth UniversityRichmondVA
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
| | - Andrew Fagan
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth UniversityRichmondVA
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
| | - H. Robert Lippman
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
- PathologyVirginia Commonwealth UniversityRichmondVA
| | - James B. Wade
- PsychiatryVirginia Commonwealth UniversityRichmondVA
| | - Phillip B. Hylemon
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth UniversityRichmondVA
- Microbiology and ImmunologyVirginia Commonwealth UniversityRichmondVA
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
| | - Jasmohan S. Bajaj
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth UniversityRichmondVA
- Hunter Holmes McGuire Veterans Administration Medical CenterVirginia Commonwealth UniversityRichmondVA
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28
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Kang JD, Myers CJ, Harris SC, Kakiyama G, Lee IK, Yun BS, Matsuzaki K, Furukawa M, Min HK, Bajaj JS, Zhou H, Hylemon PB. Bile Acid 7α-Dehydroxylating Gut Bacteria Secrete Antibiotics that Inhibit Clostridium difficile: Role of Secondary Bile Acids. Cell Chem Biol 2018; 26:27-34.e4. [PMID: 30482679 DOI: 10.1016/j.chembiol.2018.10.003] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 06/28/2018] [Accepted: 09/28/2018] [Indexed: 12/11/2022]
Abstract
Clostridium scindens biotransforms primary bile acids into secondary bile acids, and is correlated with inhibition of Clostridium difficile growth in vivo. The aim of the current study was to determine how C. scindens regulates C. difficile growth in vitro and if these interactions might relate to the regulation of gut microbiome structure in vivo. The bile acid 7α-dehydroxylating gut bacteria, C. scindens and C. sordellii, were found to secrete the tryptophan-derived antibiotics, 1-acetyl-β-carboline and turbomycin A, respectively. Both antibiotics inhibited growth of C. difficile and other gut bacteria. The secondary bile acids, deoxycholic acid and lithocholic acid, but not cholic acid, enhanced the inhibitory activity of these antibiotics. These antibiotics appear to inhibit cell division of C. difficile. The results help explain how endogenously synthesized antibiotics and secondary bile acids may regulate C. difficile growth and the structure of the gut microbiome in health and disease.
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Affiliation(s)
- Jason D Kang
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA 23298, USA; McGuire VA Medical Center, Richmond, VA, USA
| | - Christopher J Myers
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Spencer C Harris
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Genta Kakiyama
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA; McGuire VA Medical Center, Richmond, VA, USA
| | - In-Kyoung Lee
- NPChem, Co. and Division of Biotechnology, Chonbuk National University, Jeonju, Jeollabuk-do, Republic of Korea
| | - Bong-Sik Yun
- NPChem, Co. and Division of Biotechnology, Chonbuk National University, Jeonju, Jeollabuk-do, Republic of Korea
| | - Keiichi Matsuzaki
- Laboratory of Pharmacognosy and Natural Products Chemistry, School of Pharmacy, Nihon University, Chiba, Japan
| | - Megumi Furukawa
- Laboratory of Pharmacognosy and Natural Products Chemistry, School of Pharmacy, Nihon University, Chiba, Japan
| | - Hae-Ki Min
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Jasmohan S Bajaj
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA; McGuire VA Medical Center, Richmond, VA, USA
| | - Huiping Zhou
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA 23298, USA; McGuire VA Medical Center, Richmond, VA, USA
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA 23298, USA; McGuire VA Medical Center, Richmond, VA, USA.
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29
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Bajaj JS, Kakiyama G, Savidge T, Takei H, Kassam ZA, Fagan A, Gavis EA, Pandak WM, Nittono H, Hylemon PB, Boonma P, Haag A, Heuman DM, Fuchs M, John B, Sikaroodi M, Gillevet PM. Antibiotic-Associated Disruption of Microbiota Composition and Function in Cirrhosis Is Restored by Fecal Transplant. Hepatology 2018; 68:1549-1558. [PMID: 29665102 DOI: 10.1002/hep.30037] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 04/02/2018] [Accepted: 04/06/2018] [Indexed: 12/11/2022]
Abstract
UNLABELLED Patients with cirrhosis are often exposed to antibiotics that can lead to resistance and fungal overgrowth. The role of fecal microbial transplant (FMT) in restoring gut microbial function is unclear in cirrhosis. In a Food and Drug Administration-monitored phase 1 clinical safety trial, patients with decompensated cirrhosis on standard therapies (lactulose and rifaximin) were randomized to standard-of-care (SOC, no antibiotics/FMT) or 5 days of broad-spectrum antibiotics followed by FMT from a donor enriched in Lachnospiraceae and Ruminococcaceae. Microbial composition (diversity, family-level relative abundances), function (fecal bile acid [BA] deconjugation, 7α-dehydroxylation, short-chain fatty acids [SCFAs]), and correlations between Lachnospiraceae, Ruminococcaceae, and clinical variables were analyzed at baseline, postantibiotics, and 15 days post-FMT. FMT was well tolerated. Postantibiotics, there was a reduced microbial diversity and autochthonous taxa relative abundance. This was associated with an altered fecal SCFA and BA profile. Correlation linkage changes from beneficial at baseline to negative after antibiotics. All of these parameters became statistically similar post-FMT to baseline levels. No changes were seen in the SOC group. CONCLUSION In patients with advanced cirrhosis on lactulose and rifaximin, FMT restored antibiotic-associated disruption in microbial diversity and function. (Hepatology 2018; 00:000-000).
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Affiliation(s)
- Jasmohan S Bajaj
- Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Genta Kakiyama
- Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Tor Savidge
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX
| | - Hajime Takei
- Junshin Clinic Bile Acid Institute, Tokyo, Japan
| | | | - Andrew Fagan
- Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Edith A Gavis
- Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - William M Pandak
- Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | | | - Phillip B Hylemon
- Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Prapaporn Boonma
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX
| | - Anthony Haag
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX
| | - Douglas M Heuman
- Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Michael Fuchs
- Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Binu John
- Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
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Affiliation(s)
- Jasmohan S Bajaj
- Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
| | - Tor Savidge
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas
| | | | - Phillip B Hylemon
- Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia
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Liu R, Li X, Hylemon PB, Zhou H. Conjugated Bile Acids Promote Invasive Growth of Esophageal Adenocarcinoma Cells and Cancer Stem Cell Expansion via Sphingosine 1-Phosphate Receptor 2-Mediated Yes-Associated Protein Activation. Am J Pathol 2018; 188:2042-2058. [PMID: 29963993 PMCID: PMC6105923 DOI: 10.1016/j.ajpath.2018.05.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/05/2018] [Accepted: 05/15/2018] [Indexed: 02/07/2023]
Abstract
Esophageal adenocarcinoma (EAC) is the sixth leading cause of cancer deaths worldwide and has been dramatically increasing in incidence over the past decade. Gastroesophageal reflux and Barrett esophagus are well-established risk factors for disease progression. Conjugated bile acids (CBAs), including taurocholate (TCA), represent the major bile acids in the gastroesophageal refluxate of advanced Barrett esophagus and EAC patients. Our previous studies suggested that CBA-induced activation of sphingosine 1-phosphate receptor 2 (S1PR2) plays a critical role in promoting cholangiocarcinoma cell invasive growth. However, the role of CBAs in EAC development and underlying mechanisms remains elusive. In the current study, we identified that the expression level of S1PR2 is correlated to invasiveness of EAC cells. TCA significantly promoted cell proliferation, migration, invasion, transformation, and cancer stem cell expansion in highly invasive EAC cells (OE-33 cells), but had less effect on the lower invasive EAC cells (OE-19 cells). Pharmacologic inhibition of S1PR2 with specific antagonist JTE-013 or knockdown of S1PR2 expression significantly reduced TCA-induced invasive growth of OE-33 cells, whereas overexpression of S1PR2 sensitized OE-19 cells to TCA-induced invasive growth. Furthermore, TCA-induced activation of S1PR2 was closely associated with YAP and β-catenin signaling pathways. In conclusion, CBA-induced activation of the S1PR2 signaling pathway is critically involved in invasive growth of EAC cells and represents a novel therapeutic target for EAC.
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Affiliation(s)
- Runping Liu
- Department of Microbiology and Immunology, McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia
| | - Xiaojiaoyang Li
- Department of Microbiology and Immunology, McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia
| | - Huiping Zhou
- Department of Microbiology and Immunology, McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia.
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Li X, Liu R, Huang Z, Gurley EC, Wang X, Wang J, He H, Yang H, Lai G, Zhang L, Bajaj JS, White M, Pandak WM, Hylemon PB, Zhou H. Cholangiocyte-derived exosomal long noncoding RNA H19 promotes cholestatic liver injury in mouse and humans. Hepatology 2018; 68:599-615. [PMID: 29425397 PMCID: PMC6085159 DOI: 10.1002/hep.29838] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 01/28/2018] [Accepted: 02/07/2018] [Indexed: 12/12/2022]
Abstract
UNLABELLED Cholestatic liver injury is an important clinical problem with limited understanding of disease pathologies. Exosomes are small extracellular vesicles released by a variety of cells, including cholangiocytes. Exosome-mediated cell-cell communication can modulate various cellular functions by transferring a variety of intracellular components to target cells. Our recent studies indicate that the long noncoding RNA (lncRNA), H19, is mainly expressed in cholangiocytes, and its aberrant expression is associated with significant down-regulation of small heterodimer partner (SHP) in hepatocytes and cholestatic liver injury in multidrug resistance 2 knockout (Mdr2-/- ) mice. However, how cholangiocyte-derived H19 suppresses SHP in hepatocytes remains unknown. Here, we report that cholangiocyte-derived exosomes mediate transfer of H19 into hepatocytes and promote cholestatic injury. Hepatic H19 level is correlated with severity of cholestatic injury in both fibrotic mouse models, including Mdr2-/- mice, a well-characterized model of primary sclerosing cholangitis (PSC), or CCl4 -induced cholestatic liver injury mouse models, and human PSC patients. Moreover, serum exosomal-H19 level is gradually up-regulated during disease progression in Mdr2-/- mice and patients with cirrhosis. H19-carrying exosomes from the primary cholangiocytes of wild-type (WT) mice suppress SHP expression in hepatocytes, but not the exosomes from the cholangiocytes of H19-/- mice. Furthermore, overexpression of H19 significantly suppressed SHP expression at both transcriptional and posttranscriptional levels. Importantly, transplant of H19-carrying serum exosomes of old fibrotic Mdr2-/- mice significantly promoted liver fibrosis (LF) in young Mdr2-/- mice. CONCLUSION Cholangiocyte-derived exosomal-H19 plays a critical role in cholestatic liver injury. Serum exosomal H19 represents a noninvasive biomarker and potential therapeutic target for cholestatic diseases. (Hepatology 2018).
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Affiliation(s)
- Xiaojiaoyang Li
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Runping Liu
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Zhiming Huang
- Department of Gastroenterology, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Emily C. Gurley
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA,Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University
| | - Xuan Wang
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Juan Wang
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia, United States
| | - Hongliang He
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia, United States
| | - Hu Yang
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia, United States
| | - Guanhua Lai
- Department of Pathology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Luyong Zhang
- Guangdong Pharmaceutical University, Guangzhou, China
| | - Jasmohan S Bajaj
- Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University
| | - Melanie White
- Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University
| | - William M Pandak
- Division of Gastroenterology, Hepatology and Nutrition and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University
| | - Phillip B. Hylemon
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Huiping Zhou
- Department of Microbiology and Immunology and McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, USA,Department of Gastroenterology, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China,Address correspondence to: Huiping Zhou, Ph.D., Department of Microbiology & Immunology, Virginia Commonwealth University, McGuire Veterans Affairs Medical Center, 1217 East Marshall Street, MSB#533, Richmond, VA, 23298-0678, USA, Tel: 804-828-6817; Fax: 804-828-0676,
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Bajaj JS, Acharya C, Fagan A, White MB, Gavis E, Heuman DM, Hylemon PB, Fuchs M, Puri P, Schubert ML, Sanyal AJ, Sterling RK, Stravitz TR, Siddiqui MS, Luketic V, Lee H, Sikaroodi M, Gillevet PM. Proton Pump Inhibitor Initiation and Withdrawal affects Gut Microbiota and Readmission Risk in Cirrhosis. Am J Gastroenterol 2018; 113:1177-1186. [PMID: 29872220 DOI: 10.1038/s41395-018-0085-9] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 04/01/2018] [Indexed: 02/08/2023]
Abstract
OBJECTIVES Cirrhosis is associated with gut microbial dysbiosis, high readmissions and proton pump inhibitor (PPI) overuse, which could be inter-linked. Our aim was to determine the effect of PPI use, initiation and withdrawl on gut microbiota and readmissions in cirrhosis. METHODS Four cohorts were enrolled. Readmissions study: Cirrhotic inpatients were followed throughout the hospitalization and 30/90-days post-discharge. PPI initiation, withdrawal/continuation patterns were analyzed between those with/without readmissions. Cross-sectional microbiota study: Cirrhotic outpatients and controls underwent stool microbiota analysis. Beneficial autochthonous and oral-origin taxa analysis vis-à-vis PPI use was performed. Longitudinal studies: Two cohorts of decompensated cirrhotic outpatients were enrolled. Patients on chronic unindicated PPI use were withdrawn for 14 days. Patients not on PPI were started on omeprazole for 14 days. Microbial analysis for oral-origin taxa was performed pre/post-intervention. RESULTS Readmissions study: 343 inpatients (151 on admission PPI) were enrolled. 21 were withdrawn and 45 were initiated on PPI resulting in a PPI use increase of 21%. PPIs were associated with higher 30 (p = 0.002) and 90-day readmissions (p = 0.008) independent of comorbidities, medications, MELD and age. Cross-sectional microbiota: 137 cirrhotics (59 on PPI) and 45 controls (17 on PPI) were included. PPI users regardless of cirrhosis had higher oral-origin microbiota while cirrhotics on PPI had lower autochthonous taxa compared to the rest. Longitudinal studies: Fifteen decompensated cirrhotics tolerated omeprazole initiation with an increase in oral-origin microbial taxa compared to baseline. PPIs were withdrawn from an additional 15 outpatients, which resulted in a significant reduction of oral-origin taxa compared to baseline. CONCLUSIONS PPIs modulate readmission risk and microbiota composition in cirrhosis, which responds to withdrawal. The systematic withdrawal and judicious use of PPIs is needed from a clinical and microbiological perspective in decompensated cirrhosis.
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Affiliation(s)
- Jasmohan S Bajaj
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Chathur Acharya
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Andrew Fagan
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Melanie B White
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Edith Gavis
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Douglas M Heuman
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Phillip B Hylemon
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Michael Fuchs
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Puneet Puri
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Mitchell L Schubert
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Arun J Sanyal
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Richard K Sterling
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Todd R Stravitz
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Mohammad S Siddiqui
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Velimir Luketic
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Hannah Lee
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Masoumeh Sikaroodi
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
| | - Patrick M Gillevet
- Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA, USA. Microbiome Analysis Center, George Mason University, Manassas, VA, USA
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Bajaj JS, Idilman R, Mabudian L, Hood M, Fagan A, Turan D, White MB, Karakaya F, Wang J, Atalay R, Hylemon PB, Gavis EA, Brown R, Thacker LR, Acharya C, Heuman DM, Sikaroodi M, Gillevet PM. Diet affects gut microbiota and modulates hospitalization risk differentially in an international cirrhosis cohort. Hepatology 2018; 68:234-247. [PMID: 29350768 DOI: 10.1002/hep.29791] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 12/14/2017] [Accepted: 01/16/2018] [Indexed: 12/17/2022]
Abstract
UNLABELLED The relative ranking of cirrhosis-related deaths differs between high-/middle-income countries. Gut microbiome is affected in cirrhosis and is related to diet. Our aim was to determine the effect of differing dietary habits on gut microbiota and clinical outcomes. Outpatient compensated/decompensated patients with cirrhosis and controls from Turkey and the United States underwent dietary and stool microbiota analysis. Patients with cirrhosis were followed till 90-day hospitalizations. Shannon diversity and multivariable determinants (Cox and binary logistic) of microbial diversity and hospitalizations were studied within/between groups. Two hundred ninety-six subjects (157 U.S.: 48 controls, 59 compensated, 50 decompensated; 139 Turkey: 46 controls, 50 compensated, 43 decompensated) were included. Patients with cirrhosis between cohorts had similar Model for End-Stage Liver Disease (MELD) scores. American patients with cirrhosis had more men, greater rifaximin/lactulose use, and higher hepatitis C/alcohol etiologies. Coffee intake was higher in Americans whereas tea, fermented milk, and chocolate intake were higher in Turkey. The entire Turkish cohort had a significantly higher microbial diversity than Americans, which did not change between their controls and patients with cirrhosis. In contrast, microbial diversity changed in the U.S.-based cohort and was the lowest in decompensated patients. Coffee, tea, vegetable, chocolate, and fermented milk intake predicted a higher diversity whereas MELD score, lactulose use, and carbonated beverage use predicted a lower microbial diversity. The Turkish cohort had a lower risk of 90-day hospitalizations. On Cox and binary logistic regression, microbial diversity was protective against 90-day hospitalizations, along with coffee/tea, vegetable, and cereal intake. CONCLUSION In this study of patients with cirrhosis and healthy controls from the United States and Turkey, a diet rich in fermented milk, vegetables, cereals, coffee, and tea is associated with a higher microbial diversity. Microbial diversity was associated with an independently lower risk of 90-day hospitalizations. (Hepatology 2018;68:234-247).
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Affiliation(s)
- Jasmohan S Bajaj
- Internal Medicine, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Ramazan Idilman
- Ankara University School of Medicine, Department of Gastroenterology, Ankara, Turkey
| | - Leila Mabudian
- Microbiome Analysis Center, George Mason University, Manassas, VA
| | - Matthew Hood
- Microbiome Analysis Center, George Mason University, Manassas, VA
| | - Andrew Fagan
- Internal Medicine, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Dilara Turan
- Ankara University School of Medicine, Department of Gastroenterology, Ankara, Turkey
| | - Melanie B White
- Internal Medicine, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Fatih Karakaya
- Ankara University School of Medicine, Department of Gastroenterology, Ankara, Turkey
| | - Jessica Wang
- Microbiome Analysis Center, George Mason University, Manassas, VA
| | - Rengül Atalay
- Bioinformatics Department, Graduate School of Informatics, Middle East Technical University, Ankara, Turkey
| | - Phillip B Hylemon
- Microbiology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Edith A Gavis
- Internal Medicine, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Robert Brown
- Microbiome Analysis Center, George Mason University, Manassas, VA
| | - Leroy R Thacker
- Biostatistics, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Chathur Acharya
- Internal Medicine, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Douglas M Heuman
- Internal Medicine, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
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Bajaj JS, Hylemon PB. Gut-liver axis alterations in alcoholic liver disease: Are bile acids the answer? Hepatology 2018; 67:2074-2075. [PMID: 29272041 DOI: 10.1002/hep.29760] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 12/19/2017] [Accepted: 12/20/2017] [Indexed: 12/17/2022]
Affiliation(s)
- Jasmohan S Bajaj
- Department of Medicine, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
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Harris SC, Devendran S, Méndez- García C, Mythen SM, Wright CL, Fields CJ, Hernandez AG, Cann I, Hylemon PB, Ridlon JM. Bile acid oxidation by Eggerthella lenta strains C592 and DSM 2243 T. Gut Microbes 2018; 9:523-539. [PMID: 29617190 PMCID: PMC6287680 DOI: 10.1080/19490976.2018.1458180] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Strains of Eggerthella lenta are capable of oxidation-reduction reactions capable of oxidizing and epimerizing bile acid hydroxyl groups. Several genes encoding these enzymes, known as hydroxysteroid dehydrogenases (HSDH) have yet to be identified. It is also uncertain whether the products of E. lenta bile acid metabolism are further metabolized by other members of the gut microbiota. We characterized a novel human fecal isolate identified as E. lenta strain C592. The complete genome of E. lenta strain C592 was sequenced and comparative genomics with the type strain (DSM 2243) revealed high conservation, but some notable differences. E. lenta strain C592 falls into group III, possessing 3α, 3β, 7α, and 12α-hydroxysteroid dehydrogenase (HSDH) activity, as determined by mass spectrometry of thin layer chromatography (TLC) separated metabolites of primary and secondary bile acids. Incubation of E. lenta oxo-bile acid and iso-bile acid metabolites with whole-cells of the high-activity bile acid 7α-dehydroxylating bacterium, Clostridium scindens VPI 12708, resulted in minimal conversion of oxo-derivatives to lithocholic acid (LCA). Further, Iso-chenodeoxycholic acid (iso-CDCA; 3β,7α-dihydroxy-5β-cholan-24-oic acid) was not metabolized by C. scindens. We then located a gene encoding a novel 12α-HSDH in E. lenta DSM 2243, also encoded by strain C592, and the recombinant purified enzyme was characterized and substrate-specificity determined. Genomic analysis revealed genes encoding an Rnf complex (rnfABCDEG), an energy conserving hydrogenase (echABCDEF) complex, as well as what appears to be a complete Wood-Ljungdahl pathway. Our prediction that by changing the gas atmosphere from nitrogen to hydrogen, bile acid oxidation would be inhibited, was confirmed. These results suggest that E. lenta is an important bile acid metabolizing gut microbe and that the gas atmosphere may be an important and overlooked regulator of bile acid metabolism in the gut.
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Affiliation(s)
- Spencer C. Harris
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA,McGuire Veterans Affairs, Richmond, VA, USA
| | - Saravanan Devendran
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA,Microbiome Metabolic Engineering Theme, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | | | - Sean M. Mythen
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA,Microbiome Metabolic Engineering Theme, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Chris L. Wright
- Keck Center for Biotechnology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Christopher J. Fields
- Keck Center for Biotechnology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Alvaro G. Hernandez
- Keck Center for Biotechnology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Isaac Cann
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA,Microbiome Metabolic Engineering Theme, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA,Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA,Energy Biosciences Institute, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Phillip B. Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA,McGuire Veterans Affairs, Richmond, VA, USA
| | - Jason M. Ridlon
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA,Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA,Microbiome Metabolic Engineering Theme, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA,Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA,Cancer Center of Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, USA,CONTACT Jason M. Ridlon Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL USA
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Hylemon PB, Harris SC, Ridlon JM. Metabolism of hydrogen gases and bile acids in the gut microbiome. FEBS Lett 2018; 592:2070-2082. [PMID: 29683480 DOI: 10.1002/1873-3468.13064] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 04/04/2018] [Accepted: 04/10/2018] [Indexed: 12/26/2022]
Abstract
The human gut microbiome refers to a highly diverse microbial ecosystem, which has a symbiotic relationship with the host. Molecular hydrogen (H2 ) and carbon dioxide (CO2 ) are generated by fermentative metabolism in anaerobic ecosystems. H2 generation and oxidation coupled to CO2 reduction to methane or acetate help maintain the structure of the gut microbiome. Bile acids are synthesized by hepatocytes from cholesterol in the liver and are important regulators of host metabolism. In this Review, we discuss how gut bacteria metabolize hydrogen gases and bile acids in the intestinal tract and the consequences on host physiology. Finally, we focus on bile acid metabolism by the Actinobacterium Eggerthella lenta. Eggerthella lenta appears to couple hydroxyl group oxidations to reductive acetogenesis under a CO2 or N2 atmosphere, but not under H2 . Hence, at low H2 levels, E. lenta is proposed to use NADH from bile acid hydroxyl group oxidations to reduce CO2 to acetate.
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Affiliation(s)
- Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA.,McGuire Veterans Hospital, Richmond, VA, USA
| | - Spencer C Harris
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA.,McGuire Veterans Hospital, Richmond, VA, USA
| | - Jason M Ridlon
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, IL, USA
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Kwong EK, Li X, Liu R, Wang X, Hylemon PB, Zhou H. The Role of Sphingosine Kinase 2 in Chronic Alcohol‐Induced Liver Injury and Disease. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.813.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Xuan Wang
- Virginia Commonwealth UniversityRichmondVA
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39
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Liu R, Li X, Huang Z, Zhao D, Ganesh BS, Lai G, Pandak WM, Hylemon PB, Bajaj JS, Sanyal AJ, Zhou H. C/EBP homologous protein-induced loss of intestinal epithelial stemness contributes to bile duct ligation-induced cholestatic liver injury in mice. Hepatology 2018; 67:1441-1457. [PMID: 28926118 PMCID: PMC5859257 DOI: 10.1002/hep.29540] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 09/12/2017] [Accepted: 09/14/2017] [Indexed: 12/26/2022]
Abstract
Impaired intestinal barrier function promotes the progression of various liver diseases, including cholestatic liver diseases. The close association of primary sclerosing cholangitis (PSC) with inflammatory bowel disease highlights the importance of the gut-liver axis. It has been reported that bile duct ligation (BDL)-induced liver fibrosis is significantly reduced in C/EBP homologous protein knockout (CHOP-/- ) mice. However, the underlying mechanisms remain unclear. In the current study, we demonstrate that BDL induces striking and acute hepatic endoplasmic reticulum (ER) stress responses after 1 day, which return to normal after 3 days. No significant hepatocyte apoptosis is detected 7-14 days following BDL. However, the inflammatory response is significantly increased after 7 days, which is similar to what we found in human PSC liver samples. BDL-induced loss of stemness in intestinal stem cells (ISCs), disruption of intestinal barrier function, bacterial translocation, activation of hepatic inflammation, M2 macrophage polarization and liver fibrosis are significantly reduced in CHOP-/- mice. In addition, intestinal organoids derived from CHOP-/- mice contain more and longer crypt structures than those from wild-type (WT) mice, which is consistent with the upregulation of stem cell markers (leucine-rich repeat-containing G-protein-coupled receptor 5, olfactomedin 4, and SRY [sex determining region Y]-box 9) and in vivo findings that CHOP-/- mice have longer villi and crypts as compared to WT mice. Similarly, mRNA levels of CD14, interleukin-1β, tumor necrosis factor-alpha, and monocyte chemotactic protein-1 are increased and stem cell proliferation is suppressed in the duodenum of patients with cirrhosis. CONCLUSION Activation of ER stress and subsequent loss of stemness of ISCs plays a critical role in BDL-induced systemic inflammation and cholestatic liver injury. Modulation of the ER stress response represents a potential therapeutic strategy for cholestatic liver diseases as well as other inflammatory diseases. (Hepatology 2018;67:1441-1457).
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Affiliation(s)
- Runping Liu
- Department of Microbiology and Immunology, Medical College of Virginia Campus, Richmond, Virginia, 23298
- McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Xiaojiaoyang Li
- Department of Microbiology and Immunology, Medical College of Virginia Campus, Richmond, Virginia, 23298
- McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Zhiming Huang
- Department of Gastroenterology, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Derrick Zhao
- Department of Microbiology and Immunology, Medical College of Virginia Campus, Richmond, Virginia, 23298
| | - Bhagyalaxmi Sukka Ganesh
- Department of Microbiology and Immunology, Medical College of Virginia Campus, Richmond, Virginia, 23298
| | - Guanhua Lai
- Department of Pathology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - William M. Pandak
- McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
- Department of Internal Medicine/GI Division, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Medical College of Virginia Campus, Richmond, Virginia, 23298
- McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
- Department of Internal Medicine/GI Division, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Jasmohan S Bajaj
- McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
- Department of Internal Medicine/GI Division, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Arun J Sanyal
- Department of Internal Medicine/GI Division, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Huiping Zhou
- Department of Microbiology and Immunology, Medical College of Virginia Campus, Richmond, Virginia, 23298
- McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
- Department of Gastroenterology, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Department of Internal Medicine/GI Division, Virginia Commonwealth University, Richmond, Virginia, 23298
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40
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Bajaj JS, Thacker LR, Fagan A, White MB, Gavis EA, Hylemon PB, Brown R, Acharya C, Heuman DM, Fuchs M, Dalmet S, Sikaroodi M, Gillevet PM. Gut microbial RNA and DNA analysis predicts hospitalizations in cirrhosis. JCI Insight 2018. [PMID: 29515036 DOI: 10.1172/jci.insight.98019] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Cirrhosis is associated with gut microbial changes, but current 16S rDNA techniques sequence both dead and live bacteria. We aimed to determine the rRNA content compared with DNA from the same stool sample to evaluate cirrhosis progression and predict hospitalizations. METHODS Cirrhotics and controls provided stool for RNA and DNA analysis. Comparisons were made between cirrhotics/controls and within cirrhosis (compensated/decompensated, infected/uninfected, renal dysfunction/not, rifaximin use/not) with respect to DNA and RNA bacterial content using linear discriminant analysis. A separate group was treated with omeprazole for 14 days with longitudinal microbiota evaluation. Patients were followed for 90 days for hospitalizations. Multivariable models for hospitalizations with clinical data with and without DNA and RNA microbial data were created. RESULTS Twenty-six controls and 154 cirrhotics (54 infected, 62 decompensated, 20 renal dysfunction, 18 rifaximin) were included. RNA and DNA analysis showed differing potentially pathogenic taxa but similar autochthonous taxa composition. Thirty subjects underwent the omeprazole study, which demonstrated differences between RNA and DNA changes. Thirty-six patients were hospitalized within 90 days. In the RNA model, MELD score and Enterococcus were independently predictive of hospitalizations, while in the DNA model MELD was predictive and Roseburia protective. In both models, adding microbiota significantly added to the MELD score in predicting hospitalizations. CONCLUSION DNA and RNA analysis of the same stool sample demonstrated differing microbiota composition, which independently predicts the hospitalization risk in cirrhosis. RNA and DNA content of gut microbiota in cirrhosis are modulated differentially with disease severity, infections, and omeprazole use. TRIAL REGISTRATION NCT01458990. FUNDING VA Merit I0CX001076.
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Affiliation(s)
| | | | - Andrew Fagan
- Division of Gastroenterology, Hepatology and Nutrition
| | | | - Edith A Gavis
- Division of Gastroenterology, Hepatology and Nutrition
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, Virginia, USA
| | - Robert Brown
- Microbiome Analysis Center, George Mason University, Manassas, Virginia, USA
| | | | | | - Michael Fuchs
- Division of Gastroenterology, Hepatology and Nutrition
| | - Swati Dalmet
- Microbiome Analysis Center, George Mason University, Manassas, Virginia, USA
| | - Masoumeh Sikaroodi
- Microbiome Analysis Center, George Mason University, Manassas, Virginia, USA
| | - Patrick M Gillevet
- Microbiome Analysis Center, George Mason University, Manassas, Virginia, USA
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Puri P, Daita K, Joyce A, Mirshahi F, Santhekadur PK, Cazanave S, Luketic VA, Siddiqui MS, Boyett S, Min HK, Kumar DP, Kohli R, Zhou H, Hylemon PB, Contos MJ, Idowu M, Sanyal AJ. The presence and severity of nonalcoholic steatohepatitis is associated with specific changes in circulating bile acids. Hepatology 2018; 67:534-548. [PMID: 28696585 PMCID: PMC5764808 DOI: 10.1002/hep.29359] [Citation(s) in RCA: 243] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 05/25/2017] [Accepted: 07/07/2017] [Indexed: 12/12/2022]
Abstract
The histologic spectrum of nonalcoholic fatty liver disease (NAFLD) includes fatty liver (NAFL) and steatohepatitis (NASH), which can progress to cirrhosis in up to 20% of NASH patients. Bile acids (BA) are linked to the pathogenesis and therapy of NASH. We (1) characterized the plasma BA profile in biopsy-proven NAFL and NASH and compared to controls and (2) related the plasma BA profile to liver histologic features, disease activity, and fibrosis. Liquid chromatography/mass spectrometry quantified BAs. Descriptive statistics, paired and multiple group comparisons, and regression analyses were performed. Of 86 patients (24 controls, 25 NAFL, and 37 NASH; mean age 51.8 years and body mass index 31.9 kg/m2 ), 66% were women. Increased total primary BAs and decreased secondary BAs (both P < 0.05) characterized NASH. Total conjugated primary BAs were significantly higher in NASH versus NAFL (P = 0.047) and versus controls (P < 0.0001). NASH had higher conjugated to unconjugated chenodeoxycholate (P = 0.04), cholate (P = 0.0004), and total primary BAs (P < 0.0001). The total cholate to chenodeoxycholate ratio was significantly higher in NAFLD without (P = 0.005) and with (P = 0.02) diabetes. Increased key BAs were associated with higher grades of steatosis (taurocholate), lobular (glycocholate) and portal inflammation (taurolithocholate), and hepatocyte ballooning (taurocholate). Conjugated cholate and taurocholate directly and secondary to primary BA ratio inversely correlated to NAFLD activity score. A higher ratio of total secondary to primary BA decreased (odds ratio, 0.57; P = 0.004) and higher conjugated cholate increased the likelihood of significant fibrosis (F≥2) (P = 0.007). Conclusion: NAFLD is associated with significantly altered circulating BA composition, likely unaffected by type 2 diabetes, and correlated with histological features of NASH; these observations provide the foundation for future hypothesis-driven studies of specific effects of BAs on specific aspects of NASH. (Hepatology 2018;67:534-548).
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Affiliation(s)
- Puneet Puri
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Kalyani Daita
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | | | - Faridoddin Mirshahi
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Prasanna K. Santhekadur
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Sophie Cazanave
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Velimir A Luketic
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Mohammad S. Siddiqui
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Sherry Boyett
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Hae-Ki Min
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Divya P. Kumar
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Rohit Kohli
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Children’s Hospital Los Angeles, University of Southern California, Los Angeles, CA
| | - Huiping Zhou
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Phillip B. Hylemon
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Melissa J Contos
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Michael Idowu
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Arun J. Sanyal
- Div. of Gastroenterology, Hepatology and Nutrition, Dept. of Internal Medicine, Virginia Commonwealth University, Richmond, VA
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42
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Harris SC, Devendran S, Alves JMP, Mythen SM, Hylemon PB, Ridlon JM. Identification of a gene encoding a flavoprotein involved in bile acid metabolism by the human gut bacterium Clostridium scindens ATCC 35704. Biochim Biophys Acta Mol Cell Biol Lipids 2017; 1863:276-283. [PMID: 29217478 DOI: 10.1016/j.bbalip.2017.12.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 11/28/2017] [Accepted: 12/01/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND The multi-step bile acid 7α-dehydroxylating pathway by which a few species of Clostridium convert host primary bile acids to toxic secondary bile acids is of great importance to gut microbiome structure and host physiology and disease. While genes in the oxidative arm of the 7α-dehydroxylating pathway have been identified, genes in the reductive arm of the pathway are still obscure. METHODS We identified a candidate flavoprotein-encoding gene predicted to metabolize steroids. This gene was cloned and overexpressed in E. coli and affinity purified. Reaction substrate and product were separated by thin layer chromatography and identified by liquid chromatograph mass spectrometry-ion trap-time of flight (LCMS-IT-TOF). Phylogenetic analysis of the amino acid sequence was performed. RESULTS We report the identification of a gene encoding a flavoprotein (EDS08212.1) involved in secondary bile acid metabolism by Clostridium scindens ATCC 35704 and related species. Purified rEDS08212.1 catalyzed formation of a product from 3-dehydro-deoxycholic acid that UPLC-IT-TOF-MS analysis suggests loses 4amu. Our phylogeny identified this gene in other bile acid 7α-dehydroxylating bacteria. CONCLUSIONS These data suggest formation of a product, 3-dehydro-4,6-deoxycholic acid, a recognized intermediate in the reductive arm of bile acid 7α-dehydroxylation pathway and the first report of a gene in the reductive arm of the bile acid 7α-dehydroxylating pathway.
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Affiliation(s)
- Spencer C Harris
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA
| | - Saravanan Devendran
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Microbiome Metabolic Engineering Theme, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - João M P Alves
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Sean M Mythen
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Microbiome Metabolic Engineering Theme, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA
| | - Jason M Ridlon
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, USA; Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Microbiome Metabolic Engineering Theme, Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
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43
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Yang J, Li YZ, Hylemon PB, Zhang LY, Zhou HP. Cordycepin inhibits LPS-induced inflammatory responses by modulating NOD-Like Receptor Protein 3 inflammasome activation. Biomed Pharmacother 2017; 95:1777-1788. [DOI: 10.1016/j.biopha.2017.09.103] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 09/18/2017] [Accepted: 09/19/2017] [Indexed: 02/07/2023] Open
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44
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Li X, Liu R, Yang J, Sun L, Zhang L, Jiang Z, Puri P, Gurley EC, Lai G, Tang Y, Huang Z, Pandak WM, Hylemon PB, Zhou H. The role of long noncoding RNA H19 in gender disparity of cholestatic liver injury in multidrug resistance 2 gene knockout mice. Hepatology 2017; 66:869-884. [PMID: 28271527 PMCID: PMC5570619 DOI: 10.1002/hep.29145] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/11/2017] [Accepted: 03/02/2017] [Indexed: 12/31/2022]
Abstract
UNLABELLED The multidrug resistance 2 knockout (Mdr2-/- ) mouse is a well-established model of cholestatic cholangiopathies. Female Mdr2-/- mice develop more severe hepatobiliary damage than male Mdr2-/- mice, which is correlated with a higher proportion of taurocholate in the bile. Although estrogen has been identified as an important player in intrahepatic cholestasis, the underlying molecular mechanisms of gender-based disparity of cholestatic injury remain unclear. The long noncoding RNA H19 is an imprinted, maternally expressed, and estrogen-targeted gene, which is significantly induced in human fibrotic/cirrhotic liver and bile duct-ligated mouse liver. However, whether aberrant expression of H19 accounts for gender-based disparity of cholestatic injury in Mdr2-/- mice remains unknown. The current study demonstrated that H19 was markedly induced (∼200-fold) in the livers of female Mdr2-/- mice at advanced stages of cholestasis (100 days old) but not in age-matched male Mdr2-/- mice. During the early stages of cholestasis, H19 expression was minimal. We further determined that hepatic H19 was mainly expressed in cholangiocytes, not hepatocytes. Both taurocholate and estrogen significantly activated the extracellular signal-regulated kinase 1/2 signaling pathway and induced H19 expression in cholangiocytes. Knocking down H19 not only significantly reduced taurocholate/estrogen-induced expression of fibrotic genes and sphingosine 1-phosphate receptor 2 in cholangiocytes but also markedly reduced cholestatic injury in female Mdr2-/- mice. Furthermore, expression of small heterodimer partner was substantially inhibited at advanced stages of liver fibrosis, which was reversed by H19 short hairpin RNA in female Mdr2-/- mice. Similar findings were obtained in human primary sclerosing cholangitis liver samples. CONCLUSION H19 plays a critical role in the disease progression of cholestasis and represents a key factor that causes the gender disparity of cholestatic liver injury in Mdr2-/- mice. (Hepatology 2017;66:869-884).
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Affiliation(s)
- Xiaojiaoyang Li
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, China.,Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA
| | - Runping Liu
- Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA.,Guangdong Pharmaceutical University, Guangzhou, China
| | - Jing Yang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, China.,Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA
| | - Lixin Sun
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, China.,Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA
| | - Luyong Zhang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, China.,Guangdong Pharmaceutical University, Guangzhou, China
| | - Zhenzhou Jiang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Puneet Puri
- Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Emily C Gurley
- Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA
| | - Guanhua Lai
- Department of Pathology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, VA
| | - Yuping Tang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resource Industrialization and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, China
| | - Zhiming Huang
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - William M Pandak
- Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA.,Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA.,Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Huiping Zhou
- Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA.,Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA.,Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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Abstract
The ever-increasing prevalence of metabolic diseases such as dyslipidemia and diabetes in the western world continues to be of great public health concern. Biologically active sphingolipids, such as sphingosine 1-phosphate (S1P) and ceramide, are important regulators of lipid metabolism. S1P not only directly functions as an active intracellular mediator, but also activates multiple signaling pathways via five transmembrane G-protein coupled receptors (GPCRs), S1PR1-5. S1P is exclusively formed by sphingosine kinases (SphKs). Two isoforms of SphKs, SphK1 and SphK2, have been identified. Recent identification of the conjugated bile acid-induced activation of S1PR2 as a key regulator of SphK2 opened new directions for both the sphingolipid and bile acid research fields. The role of SphKs/S1P-mediated signaling pathways in health and various human diseases has been extensively reviewed elsewhere. This review focuses on recent findings related to SphKs/S1P-medaited signaling pathways in regulating hepatic lipid metabolism.
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Affiliation(s)
- Eric K Kwong
- Department of Microbiology and Immunology, Medical College of Virginia Campus, McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Xiaojiaoyang Li
- Department of Microbiology and Immunology, Medical College of Virginia Campus, McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Medical College of Virginia Campus, McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Huiping Zhou
- Department of Microbiology and Immunology, Medical College of Virginia Campus, McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
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Wang Y, Aoki H, Yang J, Peng K, Liu R, Li X, Qiang X, Sun L, Gurley EC, Lai G, Zhang L, Liang G, Nagahashi M, Takabe K, Pandak WM, Hylemon PB, Zhou H. The role of sphingosine 1-phosphate receptor 2 in bile-acid-induced cholangiocyte proliferation and cholestasis-induced liver injury in mice. Hepatology 2017; 65:2005-2018. [PMID: 28120434 PMCID: PMC5444993 DOI: 10.1002/hep.29076] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/14/2016] [Accepted: 01/19/2017] [Indexed: 12/13/2022]
Abstract
UNLABELLED Bile duct obstruction is a potent stimulus for cholangiocyte proliferation, especially for large cholangiocytes. Our previous studies reported that conjugated bile acids (CBAs) activate the protein kinase B (AKT) and extracellular signal-regulated kinase 1 and 2 (ERK1/2) signaling pathways through sphingosine 1-phosphate receptor (S1PR) 2 in hepatocytes and cholangiocarcinoma cells. It also has been reported that taurocholate (TCA) promotes large cholangiocyte proliferation and protects cholangiocytes from bile duct ligation (BDL)-induced apoptosis. However, the role of S1PR2 in bile-acid-mediated cholangiocyte proliferation and cholestatic liver injury has not been elucidated. Here, we report that S1PR2 is the predominant S1PR expressed in cholangiocytes. Both TCA- and sphingosine-1-phosphate (S1P)-induced activation of ERK1/2 and AKT were inhibited by JTE-013, a specific antagonist of S1PR2, in cholangiocytes. In addition, TCA- and S1P-induced cell proliferation and migration were inhibited by JTE-013 and a specific short hairpin RNA of S1PR2, as well as chemical inhibitors of ERK1/2 and AKT in mouse cholangiocytes. In BDL mice, expression of S1PR2 was up-regulated in whole liver and cholangiocytes. S1PR2 deficiency significantly reduced BDL-induced cholangiocyte proliferation and cholestatic injury, as indicated by significant reductions in inflammation and liver fibrosis in S1PR2 knockout mice. Treatment of BDL mice with JTE-013 significantly reduced total bile acid levels in serum and cholestatic liver injury. CONCLUSION This study suggests that CBA-induced activation of S1PR2-mediated signaling pathways plays a critical role in obstructive cholestasis and may represent a novel therapeutic target for cholestatic liver diseases. (Hepatology 2017;65:2005-2018).
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Affiliation(s)
- Yongqing Wang
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University,Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Hiroaki Aoki
- Division of Surgical Oncology, Department of Surgery, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Jing Yang
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, 23298,China Pharmaceutical University
| | - Kesong Peng
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, 23298,College of Pharmaceutical Science, Wenzhou Medical University
| | - Runping Liu
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Xiaojiaoyang Li
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, 23298,China Pharmaceutical University
| | - Xiaoyan Qiang
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, 23298,China Pharmaceutical University
| | - Lixin Sun
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, 23298,China Pharmaceutical University
| | - Emily C Gurley
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, 23298,McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Guanhua Lai
- Department of Pathology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, Virginia, 23298
| | | | - Guang Liang
- College of Pharmaceutical Science, Wenzhou Medical University
| | - Masayuki Nagahashi
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata City 951-8510
| | - Kazuaki Takabe
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, 23298,Breast Surgery, Department of Surgical Oncology, Roswell Park Cancer Institute, Buffalo, New York, 14263
| | - William M Pandak
- McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Phillip B. Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, 23298,McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298
| | - Huiping Zhou
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, Virginia, 23298,McGuire Veterans Affairs Medical Center, Virginia Commonwealth University, Richmond, Virginia, 23298,College of Pharmaceutical Science, Wenzhou Medical University
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Yang J, Sun L, Wang L, Hassan HM, Wang X, Hylemon PB, Wang T, Zhou H, Zhang L, Jiang Z. Activation of Sirt1/FXR Signaling Pathway Attenuates Triptolide-Induced Hepatotoxicity in Rats. Front Pharmacol 2017; 8:260. [PMID: 28536529 PMCID: PMC5422577 DOI: 10.3389/fphar.2017.00260] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 04/25/2017] [Indexed: 01/14/2023] Open
Abstract
Triptolide (TP), a diterpenoid isolated from Tripterygium wilfordii Hook F, has an excellent pharmacological profile of immunosuppression and anti-tumor activities, but its clinical applications are severely restricted due to its severe and cumulative toxicities. The farnesoid X receptor (FXR) is the master bile acid nuclear receptor and plays an important role in maintaining hepatic metabolism homeostasis. Hepatic Sirtuin (Sirt1) is a key regulator of the FXR signaling pathway and hepatic metabolism homeostasis. The aims of this study were to determine whether Sirt1/FXR signaling pathway plays a critical role in TP-induced hepatotoxicity. Our study revealed that the intragastric administration of TP (400 μg/kg body weight) for 28 consecutive days increased bile acid accumulation, suppressed hepatic gluconeogenesis in rats. The expression of bile acid transporter BSEP was significantly reduced and cholesterol 7α-hydroxylase (CYP7A1) was markedly increased in the TP-treated group, whereas the genes responsible for hepatic gluconeogenesis were suppressed in the TP-treated group. TP also modulated the FXR and Sirt1 by decreasing its expression both in vitro and in vivo. The Sirt1 agonist SRT1720 and the FXR agonist obeticholic acid (OCA) were used both in vivo and in vitro. The remarkable liver damage induced by TP was attenuated by treatment with either SRT1720 or OCA, as reflected by decreased levels of serum total bile acids and alkaline phosphatase and increased glucose levels. Meanwhile, SRT1720 significantly alleviated TP-induced FXR suppression and FXR-targets involved in hepatic lipid and glucose metabolism. Based on these results, we conclude that Sirt1/FXR inactivation plays a critical role in TP-induced hepatotoxicity. Moreover, Sirt1/FXR axis represents a novel therapeutic target that could potentially ameliorate TP-induced hepatotoxicity.
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Affiliation(s)
- Jing Yang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical UniversityNanjing, China.,Department of Microbiology and Immunology, Virginia Commonwealth University, RichmondVA, USA
| | - Lixin Sun
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical UniversityNanjing, China
| | - Lu Wang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical UniversityNanjing, China
| | - Hozeifa M Hassan
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical UniversityNanjing, China
| | - Xuan Wang
- Department of Microbiology and Immunology, Virginia Commonwealth University, RichmondVA, USA
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University, RichmondVA, USA.,McGuire Veterans Affairs Medical Center, RichmondVA, USA
| | - Tao Wang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical UniversityNanjing, China
| | - Huiping Zhou
- Department of Microbiology and Immunology, Virginia Commonwealth University, RichmondVA, USA.,McGuire Veterans Affairs Medical Center, RichmondVA, USA
| | - Luyong Zhang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical UniversityNanjing, China.,Jiangsu Center for Pharmacodynamics Research and Evaluation, China Pharmaceutical UniversityNanjing, China.,State Key Laboratory of Natural Medicines, China Pharmaceutical UniversityNanjing, China
| | - Zhenzhou Jiang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical UniversityNanjing, China.,Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Ministry of EducationNanjing, China.,Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical UniversityNanjing, China
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48
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Kang DJ, Hylemon PB, Gillevet PM, Sartor RB, Betrapally NS, Kakiyama G, Sikaroodi M, Takei H, Nittono H, Zhou H, Pandak WM, Yang J, Jiao C, Li X, Lippman HR, Heuman DM, Bajaj JS. Gut microbial composition can differentially regulate bile acid synthesis in humanized mice. Hepatol Commun 2017; 1:61-70. [PMID: 29404434 PMCID: PMC5747030 DOI: 10.1002/hep4.1020] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 01/24/2017] [Indexed: 02/06/2023] Open
Abstract
We previously reported that alcohol drinkers with and without cirrhosis showed a significant increase in fecal bile acid secretion compared to nondrinkers. We hypothesized this may be due to activation by alcohol of hepatic cyclic adenosine monophosphate responsive element-binding protein 3-like protein 3 (CREBH), which induces cholesterol 7α-hydroxylase (Cyp7a1). Alternatively, the gut microbiota composition in the absence of alcohol might increase bile acid synthesis by up-regulating Cyp7a1. To test this hypothesis, we humanized germ-free (GF) mice with stool from healthy human subjects (Ctrl-Hum), human subjects with cirrhosis (Cirr-Hum), and human subjects with cirrhosis and active alcoholism (Alc-Hum). All animals were fed a normal chow diet, and none demonstrated cirrhosis. Both hepatic Cyp7a1 and sterol 12α-hydroxylase (Cyp8b1) messenger RNA (mRNA) levels were significantly induced in the Alc-Hum and Ctrl-Hum mice but not in the Cirr-Hum mice or GF mice. Liver bile acid concentration was correspondingly increased in the Alc-Hum mice despite fibroblast growth factor 15, fibroblast growth receptor 4, and small heterodimer partner mRNA levels being significantly induced in the large bowel and liver of the Ctrl-Hum mice and Alc-Hum mice but not in the Cirr-Hum mice or GF mice. This suggests that the normal pathways of Cyp7a1 repression were activated in the Alc-Hum mice and Ctrl-Hum mice. CREBH mRNA was significantly induced only in the Ctrl-Hum mice and Alc-Hum mice, possibly indicating that the gut microbiota up-regulate CREBH and induce bile acid synthesis genes. Analysis of stool bile acids showed that the microbiota of the Cirr-Hum and Alc-Hum mice had a greater ability to deconjugate and 7α-dehydroxylate primary bile acids compared to the microbiota of the Cirr-Hum mice. 16S ribosomal RNA gene sequencing of the gut microbiota showed that the relative abundance of taxa that 7-α dehydroxylate primary bile acids was higher in the Ctrl-Hum and Alc-Hum groups. Conclusion: The composition of gut microbiota influences the regulation of the rate-limiting enzymes in bile acid synthesis in the liver. (Hepatology Communications 2017;1:61-70).
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Affiliation(s)
- Dae Joong Kang
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth University and McGuire Veterans Administration Medical CenterRichmondVA
| | - Phillip B Hylemon
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth University and McGuire Veterans Administration Medical CenterRichmondVA
| | | | - R. Balfour Sartor
- Departments of Medicine, Microbiology, and Immunology, National Gnotobiotic Rodent Resource CenterUniversity of North CarolinaChapel HillNC
| | | | - Genta Kakiyama
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth University and McGuire Veterans Administration Medical CenterRichmondVA
| | | | | | | | - Huiping Zhou
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth University and McGuire Veterans Administration Medical CenterRichmondVA
| | - William M. Pandak
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth University and McGuire Veterans Administration Medical CenterRichmondVA
| | - Jing Yang
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth University and McGuire Veterans Administration Medical CenterRichmondVA
| | - Chunhua Jiao
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth University and McGuire Veterans Administration Medical CenterRichmondVA
| | - Xiaojiaoyang Li
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth University and McGuire Veterans Administration Medical CenterRichmondVA
| | - H. Robert Lippman
- Department of PathologyVirginia Commonwealth University and McGuire Veterans Administration Medical CenterRichmondVA
| | - Douglas M. Heuman
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth University and McGuire Veterans Administration Medical CenterRichmondVA
| | - Jasmohan S. Bajaj
- Division of Gastroenterology, Hepatology, and NutritionVirginia Commonwealth University and McGuire Veterans Administration Medical CenterRichmondVA
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49
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Chen T, Huang Z, Liu R, Yang J, Hylemon PB, Zhou H. Sphingosine-1 phosphate promotes intestinal epithelial cell proliferation via S1PR2. Front Biosci (Landmark Ed) 2017; 22:596-608. [PMID: 27814635 DOI: 10.2741/4505] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Sphingosine-1 phosphate (S1P) is a potent bioactive lipid mediator that acts both as an intracellular signaling molecule and a natural ligand of five different G protein-coupled receptors (GPCRs), S1PR1-5. The level of S1P in intestinal tissue is abundant. Previous studies have reported that S1P protects intestinal epithelial cell from apoptosis by activating the ERK and Akt signaling pathways. However, the effect of S1P on intestinal epithelial cell proliferation under physiological conditions and the underlying signaling mechanisms remain to be elucidated. Here, we show that, except for S1PR4, all S1PRs are expressed in normal intestinal epithelial cells with S1PR2 being the most abundant. S1P dose-dependently stimulated cell migration and proliferation, which were inhibited by JTE-013, a selective chemical antagonist of S1PR2, and by a S1PR2 shRNA. S1P significantly upregulated the expression of c-Myc, cyclin D1, E-cadherin and zona occluden-1 (ZO-1), which was completely inhibited by downregulation of S1PR2 expression with a shRNA. In total, the results suggest that S1P-mediated activation of the S1PR2 plays an important role in regulating intestinal epithelial cell proliferation and migration.
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Affiliation(s)
- Tanzhou Chen
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Zhiming Huang
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Runping Liu
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Jing Yang
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA 23298, USA, and McGuire VA Medical Center, Richmond, VA 23235, USA
| | - Huiping Zhou
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China,
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50
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Kang DJ, Betrapally NS, Ghosh SA, Sartor RB, Hylemon PB, Gillevet PM, Sanyal AJ, Heuman DM, Carl D, Zhou H, Liu R, Wang X, Yang J, Jiao C, Herzog J, Lippman HR, Sikaroodi M, Brown RR, Bajaj JS. Gut microbiota drive the development of neuroinflammatory response in cirrhosis in mice. Hepatology 2016; 64:1232-48. [PMID: 27339732 PMCID: PMC5033692 DOI: 10.1002/hep.28696] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 05/18/2016] [Accepted: 06/21/2016] [Indexed: 12/23/2022]
Abstract
UNLABELLED The mechanisms behind the development of hepatic encephalopathy (HE) are unclear, although hyperammonemia and systemic inflammation through gut dysbiosis have been proposed. The aim of this work was to define the individual contribution of hyperammonemia and systemic inflammation on neuroinflammation in cirrhosis using germ-free (GF) and conventional mice. GF and conventional C57BL/6 mice were made cirrhotic using CCl4 gavage. These were compared to their noncirrhotic counterparts. Intestinal microbiota, systemic and neuroinflammation (including microglial and glial activation), serum ammonia, intestinal glutaminase activity, and cecal glutamine content were compared between groups. GF cirrhotic mice developed similar cirrhotic changes to conventional mice after 4 extra weeks (16 vs. 12 weeks) of CCl4 gavage. GF cirrhotic mice exhibited higher ammonia, compared to GF controls, but this was not associated with systemic or neuroinflammation. Ammonia was generated through increased small intestinal glutaminase activity with concomitantly reduced intestinal glutamine levels. However, conventional cirrhotic mice had intestinal dysbiosis as well as systemic inflammation, associated with increased serum ammonia, compared to conventional controls. This was associated with neuroinflammation and glial/microglial activation. Correlation network analysis in conventional mice showed significant linkages between systemic/neuroinflammation, intestinal microbiota, and ammonia. Specifically beneficial, autochthonous taxa were negatively linked with brain and systemic inflammation, ammonia, and with Staphylococcaceae, Lactobacillaceae, and Streptococcaceae. Enterobacteriaceae were positively linked with serum inflammatory cytokines. CONCLUSION Gut microbiota changes drive development of neuroinflammatory and systemic inflammatory responses in cirrhotic animals. (Hepatology 2016;64:1232-1248).
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Affiliation(s)
- Dae Joong Kang
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | | | - Siddhartha A Ghosh
- Division of Nephrology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - R Balfour Sartor
- National Gnotobiotic Rodent Resource Center, Department of Medicine, University of North Carolina, Chapel Hill, NC
| | - Phillip B Hylemon
- Division of Microbiology and Immunology, and, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | | | - Arun J Sanyal
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Douglas M Heuman
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Daniel Carl
- Division of Nephrology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Huiping Zhou
- Division of Microbiology and Immunology, and, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Runping Liu
- Division of Microbiology and Immunology, and, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Xiang Wang
- Division of Microbiology and Immunology, and, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Jing Yang
- Division of Microbiology and Immunology, and, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Chunhua Jiao
- Division of Microbiology and Immunology, and, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | - Jeremy Herzog
- National Gnotobiotic Rodent Resource Center, Department of Medicine, University of North Carolina, Chapel Hill, NC
| | - H Robert Lippman
- Division of Pathology, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA
| | | | - Robert R Brown
- Microbiome Analysis Center, George Mason University, Manassas, VA
| | - Jasmohan S Bajaj
- Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and McGuire VA Medical Center, Richmond, VA.
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