1
|
Lyu J, Okada H, Sunagozaka H, Kawaguchi K, Shimakami T, Nio K, Murai K, Shirasaki T, Yoshida M, Arai K, Yamashita T, Tanaka T, Harada K, Takamura T, Kaneko S, Yamashita T, Honda M. Potential utility of l-carnitine for preventing liver tumors derived from metabolic dysfunction-associated steatohepatitis. Hepatol Commun 2024; 8:e0425. [PMID: 38619434 PMCID: PMC11019826 DOI: 10.1097/hc9.0000000000000425] [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: 11/09/2023] [Accepted: 01/26/2024] [Indexed: 04/16/2024] Open
Abstract
BACKGROUND Recent reports have unveiled the potential utility of l-carnitine to alleviate metabolic dysfunction-associated steatohepatitis (MASH) by enhancing mitochondrial metabolic function. However, its efficacy at preventing the development of HCC has not been assessed fully. METHODS l-carnitine (2 g/d) was administered to 11 patients with MASH for 10 weeks, and blood liver function tests were performed. Five patients received a serial liver biopsy, and liver histology and hepatic gene expression were evaluated using this tissue. An atherogenic plus high-fat diet MASH mouse model received long-term l-carnitine administration, and liver histology and liver tumor development were evaluated. RESULTS Ten-week l-carnitine administration significantly improved serum alanine transaminase and aspartate transaminase levels along with a histological improvement in the NAFLD activity score, while steatosis and fibrosis were not improved. Gene expression profiling revealed a significant improvement in the inflammation and profibrotic gene signature as well as the recovery of lipid metabolism. Long-term l-carnitine administration to atherogenic plus high-fat diet MASH mice substantially improved liver histology (inflammation, steatosis, and fibrosis) and significantly reduced the incidence of liver tumors. l-carnitine directly reduced the expression of the MASH-associated and stress-induced transcriptional factor early growth response 1. Early growth response 1 activated the promoter activity of neural precursor cell expressed, developmentally downregulated protein 9 (NEDD9), an oncogenic protein. Thus, l-carnitine reduced the activation of the NEDD9, focal adhesion kinase 1, and AKT oncogenic signaling pathway. CONCLUSIONS Short-term l-carnitine administration ameliorated MASH through its anti-inflammatory effects. Long-term l-carnitine administration potentially improved the steatosis and fibrosis of MASH and may eventually reduce the risk of HCC.
Collapse
Affiliation(s)
- Junyan Lyu
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Hajime Sunagozaka
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kouki Nio
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kazuhisa Murai
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Takayoshi Shirasaki
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Mika Yoshida
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kuniaki Arai
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Tatsuya Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Takuji Tanaka
- Research Center of Diagnostic Pathology, Gifu Municipal Hospital, Gifu, Japan
| | - Kenichi Harada
- Department of Human Pathology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Toshinari Takamura
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Masao Honda
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| |
Collapse
|
2
|
Shimizu R, Murai K, Tanaka K, Sato Y, Takeda N, Nakasyo S, Shirasaki T, Kawaguchi K, Shimakami T, Nio K, Nakaya Y, Kagiwada H, Horimoto K, Mizokami M, Kaneko S, Murata K, Yamashita T, Honda M. Nucleos(t)ide analogs for hepatitis B virus infection differentially regulate the growth factor signaling in hepatocytes. Hepatol Commun 2024; 8:e0351. [PMID: 38180972 PMCID: PMC10781114 DOI: 10.1097/hc9.0000000000000351] [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: 08/23/2023] [Accepted: 10/13/2023] [Indexed: 01/07/2024] Open
Abstract
BACKGROUND Recent clinical studies have suggested that the risk of developing HCC might be lower in patients with chronic hepatitis B receiving tenofovir disoproxil fumarate than in patients receiving entecavir, although there is no difference in biochemical and virological remission between the 2 drugs. METHODS The effects of nucleoside analogs (NsAs; lamivudine and entecavir) or nucleotide analogs (NtAs; adefovir disoproxil, tenofovir disoproxil fumarate, and tenofovir alafenamide) on cell growth and the expression of growth signaling molecules in hepatoma cell lines and PXB cells were investigated in vitro. The tumor inhibitory effects of NsAs or NtAs were evaluated using a mouse xenograft model, and protein phosphorylation profiles were investigated. The binding of NsAs or NtAs to the insulin receptor (INSR) was investigated by thermal shift assays. RESULTS NtAs, but not NsAs, showed direct growth inhibitory effects on hepatoma cell lines in vitro and a mouse model in vivo. A phosphoprotein array revealed that INSR signaling was impaired and the levels of phosphorylated (p)-INSRβ and downstream molecules phosphorylated (p)-IRS1, p-AKT, p-Gab1, and p-SHP2 were substantially reduced by NtAs. In addition, p-epidermal growth factor receptor and p-AKT levels were substantially reduced by NtAs. Similar findings were also found in PXB cells and nontumor lesions of liver tissues from patients with chronic hepatitis B. Prodrug NtAs, but not their metabolites (adefovir, adefovir monophosphate, adefovir diphosphate, tenofovir, tenofovir monophosphate, and tenofovir diphosphate), had such effects. A thermal shift assay showed the binding of NtAs to INSRβ. CONCLUSIONS NtAs (adefovir disoproxil, tenofovir disoproxil fumarate, and tenofovir alafenamide), which are adenine derivative acyclic nucleotide analogs, potentially bind to the ATP-binding site of growth factor receptors and inhibit their autophosphorylation, which might reduce the risk of HCC in patients with chronic hepatitis B.
Collapse
Affiliation(s)
- Ryogo Shimizu
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kazuhisa Murai
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kensuke Tanaka
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Yuga Sato
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Naho Takeda
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Saki Nakasyo
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Takayoshi Shirasaki
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kouki Nio
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Yuki Nakaya
- Department of Infection and Immunity, Division of Virology, Jichi Medical University, Shimotsuke, Japan
| | - Harumi Kagiwada
- Biological Data Science Research Group, Cellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, Tokyo, Japan
| | - Katsuhisa Horimoto
- Artificial Intelligence Research Center, National Institute of Advanced Industrial Science and Technology, Tokyo, Japan
| | - Masashi Mizokami
- Genome Medical Sciences Project, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kazumoto Murata
- Department of Infection and Immunity, Division of Virology, Jichi Medical University, Shimotsuke, Japan
- Genome Medical Sciences Project, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masao Honda
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| |
Collapse
|
3
|
Shiota T, Li Z, Chen GY, McKnight KL, Shirasaki T, Yonish B, Kim H, Fritch EJ, Sheahan TP, Muramatsu M, Kapustina M, Cameron CE, Li Y, Zhang Q, Lemon SM. Hepatoviruses promote very-long-chain fatty acid and sphingolipid synthesis for viral RNA replication and quasi-enveloped virus release. Sci Adv 2023; 9:eadj4198. [PMID: 37862421 PMCID: PMC10588952 DOI: 10.1126/sciadv.adj4198] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 09/15/2023] [Indexed: 10/22/2023]
Abstract
Virus-induced changes in host lipid metabolism are an important but poorly understood aspect of viral pathogenesis. By combining nontargeted lipidomics analyses of infected cells and purified extracellular quasi-enveloped virions with high-throughput RNA sequencing and genetic depletion studies, we show that hepatitis A virus, an hepatotropic picornavirus, broadly manipulates the host cell lipid environment, enhancing synthesis of ceramides and other sphingolipids and transcriptionally activating acyl-coenzyme A synthetases and fatty acid elongases to import and activate long-chain fatty acids for entry into the fatty acid elongation cycle. Phospholipids with very-long-chain acyl tails (>C22) are essential for genome replication, whereas increases in sphingolipids support assembly and release of quasi-enveloped virions wrapped in membranes highly enriched for sphingomyelin and very-long-chain ceramides. Our data provide insight into how a pathogenic virus alters lipid flux in infected hepatocytes and demonstrate a distinction between lipid species required for viral RNA synthesis versus nonlytic quasi-enveloped virus release.
Collapse
Affiliation(s)
- Tomoyuki Shiota
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Zhucui Li
- Center for Translational Biomedical Research, The University of North Carolina at Greensboro, Kannapolis, NC, USA
| | - Guan-Yuan Chen
- Center for Translational Biomedical Research, The University of North Carolina at Greensboro, Kannapolis, NC, USA
| | - Kevin L. McKnight
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Takayoshi Shirasaki
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Bryan Yonish
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Heyjeong Kim
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ethan J. Fritch
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Timothy P. Sheahan
- Department of Epidemiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Masamichi Muramatsu
- Department of Infectious Disease Research, Foundation for Biomedical Research and Innovation at Kobe, Kobe, Hyogo, Japan
| | - Maryna Kapustina
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Craig E. Cameron
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - You Li
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Qibin Zhang
- Center for Translational Biomedical Research, The University of North Carolina at Greensboro, Kannapolis, NC, USA
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, Greensboro, NC, USA
| | - Stanley M. Lemon
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| |
Collapse
|
4
|
Imamura R, Sato H, Chih-Cheng Voon D, Shirasaki T, Honda M, Kurachi M, Sakai K, Matsumoto K. Met receptor is essential for MAVS-mediated antiviral innate immunity in epithelial cells independent of its kinase activity. Proc Natl Acad Sci U S A 2023; 120:e2307318120. [PMID: 37748074 PMCID: PMC10556573 DOI: 10.1073/pnas.2307318120] [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: 05/12/2023] [Accepted: 08/29/2023] [Indexed: 09/27/2023] Open
Abstract
Epithelial tissue is at the forefront of innate immunity, playing a crucial role in the recognition and elimination of pathogens. Met is a receptor tyrosine kinase that is necessary for epithelial cell survival, proliferation, and regeneration. Here, we showed that Met is essential for the induction of cytokine production by cytosolic nonself double-stranded RNA through retinoic acid-inducible gene-I-like receptors (RLRs) in epithelial cells. Surprisingly, the tyrosine kinase activity of Met was dispensable for promoting cytokine production. Rather, the intracellular carboxy terminus of Met interacted with mitochondrial antiviral-signaling protein (MAVS) in RLR-mediated signaling to directly promote MAVS signalosome formation. These studies revealed a kinase activity-independent function of Met in the promotion of antiviral innate immune responses, defining dual roles of Met in both regeneration and immune responses in the epithelium.
Collapse
Affiliation(s)
- Ryu Imamura
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa920-1192, Japan
- The World Premier International Research Center Initiative (WPI)-Nano Life Science Institute, Kanazawa University, Kanazawa920-1192, Japan
| | - Hiroki Sato
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa920-1192, Japan
| | - Dominic Chih-Cheng Voon
- Innovative Cancer Model Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa920-1192, Japan
| | - Takayoshi Shirasaki
- Department of Clinical Laboratory Medicine, Kanazawa University, Graduate School of Medical Science, Kanazawa920-8641, Japan
| | - Masao Honda
- Department of Clinical Laboratory Medicine, Kanazawa University, Graduate School of Medical Science, Kanazawa920-8641, Japan
- Department of Gastroenterology, Kanazawa University, Graduate School of Medical Science, Kanazawa920-8641, Japan
| | - Makoto Kurachi
- Department of Molecular Genetics, Kanazawa University, Graduate School of Medical Science, Kanazawa920-8640, Japan
| | - Katsuya Sakai
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa920-1192, Japan
- The World Premier International Research Center Initiative (WPI)-Nano Life Science Institute, Kanazawa University, Kanazawa920-1192, Japan
| | - Kunio Matsumoto
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa920-1192, Japan
- The World Premier International Research Center Initiative (WPI)-Nano Life Science Institute, Kanazawa University, Kanazawa920-1192, Japan
| |
Collapse
|
5
|
Shirasaki T, Murai K, Ishida A, Kuroki K, Kawaguchi K, Wang Y, Yamanaka S, Yasukawa R, Kawasaki N, Li YY, Shimakami T, Sumiyadorj A, Nio K, Sugimoto S, Orita N, Takayama H, Okada H, Thi Bich PD, Iwabuchi S, Hashimoto S, Ide M, Tabata N, Ito S, Matsushima K, Yanagawa H, Yamashita T, Kaneko S, Honda M. Functional involvement of endothelial lipase in hepatitis B virus infection. Hepatol Commun 2023; 7:e0206. [PMID: 37655967 PMCID: PMC10476801 DOI: 10.1097/hc9.0000000000000206] [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: 06/25/2022] [Accepted: 04/05/2023] [Indexed: 09/02/2023] Open
Abstract
BACKGROUND HBV infection causes chronic liver disease and leads to the development of HCC. To identify host factors that support the HBV life cycle, we previously established the HC1 cell line that maintains HBV infection and identified host genes required for HBV persistence. METHODS The present study focused on endothelial lipase (LIPG), which binds to heparan sulfate proteoglycans (HSPGs) in the cell membrane. RESULTS We found HBV infection was impaired in humanized liver chimeric mouse-derived hepatocytes that were transduced with lentivirus expressing short hairpin RNA against LIPG. Long-term suppression of LIPG combined with entecavir further suppressed HBV replication. LIPG was shown to be involved in HBV attachment to the cell surface by using 2 sodium taurocholate cotransporting peptide (NTCP)-expressing cell lines, and the direct interaction of LIPG and HBV large surface protein was revealed. Heparin and heparinase almost completely suppressed the LIPG-induced increase of HBV attachment, indicating that LIPG accelerated HBV attachment to HSPGs followed by HBV entry through NTCP. Surprisingly, the attachment of a fluorescently labeled NTCP-binding preS1 probe to NTCP-expressing cells was not impaired by heparin, suggesting the HSPG-independent attachment of the preS1 probe to NTCP. Interestingly, attachment of the preS1 probe was severely impaired in LIPG knockdown or knockout cells. Inhibitors of the lipase activity of LIPG similarly impaired the attachment of the preS1 probe to NTCP-expressing cells. CONCLUSIONS LIPG participates in HBV infection by upregulating HBV attachment to the cell membrane by means of 2 possible mechanisms: increasing HBV attachment to HSPGs or facilitating HSPG-dependent or HSPG-independent HBV attachment to NTCP by its lipase activity.
Collapse
Affiliation(s)
- Takayoshi Shirasaki
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kazuhisa Murai
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Atsuya Ishida
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kazuyuki Kuroki
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Ying Wang
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Souma Yamanaka
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Rio Yasukawa
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Narumi Kawasaki
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Ying-Yi Li
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Ariunaa Sumiyadorj
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kouki Nio
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Saiho Sugimoto
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Noriaki Orita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Hideo Takayama
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Phuong Doan Thi Bich
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Sadahiro Iwabuchi
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | - Shinichi Hashimoto
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | | | | | | | - Kouji Matsushima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba, Japan
| | | | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masao Honda
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| |
Collapse
|
6
|
Rosain J, Neehus AL, Manry J, Yang R, Le Pen J, Daher W, Liu Z, Chan YH, Tahuil N, Türel Ö, Bourgey M, Ogishi M, Doisne JM, Izquierdo HM, Shirasaki T, Le Voyer T, Guérin A, Bastard P, Moncada-Velez M, Han JE, Khan T, Rapaport F, Hong SH, Cheung A, Haake K, Mindt BC, Perez L, Philippot Q, Lee D, Zhang P, Rinchai D, Al Ali F, Ata MMA, Rahman M, Peel JN, Heissel S, Molina H, Kendir-Demirkol Y, Bailey R, Zhao S, Bohlen J, Mancini M, Seeleuthner Y, Roelens M, Lorenzo L, Soudée C, Paz MEJ, Gonzalez ML, Jeljeli M, Soulier J, Romana S, L’Honneur AS, Materna M, Martínez-Barricarte R, Pochon M, Oleaga-Quintas C, Michev A, Migaud M, Lévy R, Alyanakian MA, Rozenberg F, Croft CA, Vogt G, Emile JF, Kremer L, Ma CS, Fritz JH, Lemon SM, Spaan AN, Manel N, Abel L, MacDonald MR, Boisson-Dupuis S, Marr N, Tangye SG, Di Santo JP, Zhang Q, Zhang SY, Rice CM, Béziat V, Lachmann N, Langlais D, Casanova JL, Gros P, Bustamante J. Human IRF1 governs macrophagic IFN-γ immunity to mycobacteria. Cell 2023; 186:621-645.e33. [PMID: 36736301 PMCID: PMC9907019 DOI: 10.1016/j.cell.2022.12.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 11/22/2022] [Accepted: 12/19/2022] [Indexed: 02/05/2023]
Abstract
Inborn errors of human IFN-γ-dependent macrophagic immunity underlie mycobacterial diseases, whereas inborn errors of IFN-α/β-dependent intrinsic immunity underlie viral diseases. Both types of IFNs induce the transcription factor IRF1. We describe unrelated children with inherited complete IRF1 deficiency and early-onset, multiple, life-threatening diseases caused by weakly virulent mycobacteria and related intramacrophagic pathogens. These children have no history of severe viral disease, despite exposure to many viruses, including SARS-CoV-2, which is life-threatening in individuals with impaired IFN-α/β immunity. In leukocytes or fibroblasts stimulated in vitro, IRF1-dependent responses to IFN-γ are, both quantitatively and qualitatively, much stronger than those to IFN-α/β. Moreover, IRF1-deficient mononuclear phagocytes do not control mycobacteria and related pathogens normally when stimulated with IFN-γ. By contrast, IFN-α/β-dependent intrinsic immunity to nine viruses, including SARS-CoV-2, is almost normal in IRF1-deficient fibroblasts. Human IRF1 is essential for IFN-γ-dependent macrophagic immunity to mycobacteria, but largely redundant for IFN-α/β-dependent antiviral immunity.
Collapse
Affiliation(s)
- Jérémie Rosain
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France; Paris Cité University, Imagine Institute, 75015 Paris, France.
| | - Anna-Lena Neehus
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France,Institute of Experimental Hematology, REBIRTH Center for Regenerative and Translational Medicine, Hannover Medical School, 30625 Hannover, Germany
| | - Jeremy Manry
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France
| | - Rui Yang
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Jérémie Le Pen
- Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, NY 10065, USA
| | - Wassim Daher
- Infectious Disease Research Institute of Montpellier (IRIM), Montpellier University, 34000 Montpellier, France,Inserm, IRIM, 34293 Montpellier, France
| | - Zhiyong Liu
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Yi-Hao Chan
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Natalia Tahuil
- Department of Immunology, Del Niño Jesus Hospital, T4000 San Miguel de Tucuman, Tucuman, Argentina
| | - Özden Türel
- Department of Pediatric Infectious Disease, Bezmialem Vakif University Faculty of Medicine, 34093 İstanbul, Turkey
| | - Mathieu Bourgey
- Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, QC H3A 0G1, Canada,Canadian Centre for Computation Genomics, Montreal, QC H3A 0G1, Canada
| | - Masato Ogishi
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Jean-Marc Doisne
- Innate Immunity Unit, Institut Pasteur, 75015 Paris, France,Inserm U1223, 75015 Paris, France
| | | | - Takayoshi Shirasaki
- Department of Medicine, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7292, USA
| | - Tom Le Voyer
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France
| | - Antoine Guérin
- Garvan Institute of Medical Research, Darlinghurst, NSW 2010, Australia,St. Vincent’s Clinical School, Faculty of Medicine, University of NSW, Sydney, NSW 2052, Australia
| | - Paul Bastard
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France,St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA,Pediatric Hematology-Immunology and Rheumatology Unit, Necker Hospital for Sick Children, AP-HP, 75015 Paris, France
| | - Marcela Moncada-Velez
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Ji Eun Han
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Taushif Khan
- Department of Immunology, Sidra Medicine, Doha, Qatar
| | - Franck Rapaport
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Seon-Hui Hong
- Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, NY 10065, USA
| | - Andrew Cheung
- Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, NY 10065, USA
| | - Kathrin Haake
- Institute of Experimental Hematology, REBIRTH Center for Regenerative and Translational Medicine, Hannover Medical School, 30625 Hannover, Germany
| | - Barbara C. Mindt
- Department of Microbiology and Immunology, McGill University, Montreal, QC H3A 0G1, Canada,McGill University Research Centre on Complex Traits, McGill University, Montreal, QC H3A 0G1, Canada,FOCiS Centre of Excellence in Translational Immunology, McGill University, Montreal, QC H3A 0G1, Canada
| | - Laura Perez
- Department of Immunology and Rheumatology, “J. P. Garrahan” National Hospital of Pediatrics, C1245 CABA, Buenos Aires, Argentina
| | - Quentin Philippot
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France
| | - Danyel Lee
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France,St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Peng Zhang
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Darawan Rinchai
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Fatima Al Ali
- Department of Immunology, Sidra Medicine, Doha, Qatar
| | | | | | - Jessica N. Peel
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Søren Heissel
- Proteomics Resource Center, The Rockefeller University, New York, NY 10065, USA
| | - Henrik Molina
- Proteomics Resource Center, The Rockefeller University, New York, NY 10065, USA
| | - Yasemin Kendir-Demirkol
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA,Umraniye Education and Research Hospital, Department of Pediatric Genetics, 34764 İstanbul, Turkey
| | - Rasheed Bailey
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Shuxiang Zhao
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Jonathan Bohlen
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France
| | - Mathieu Mancini
- Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, QC H3A 0G1, Canada,Department of Microbiology and Immunology, McGill University, Montreal, QC H3A 0G1, Canada,McGill University Research Centre on Complex Traits, McGill University, Montreal, QC H3A 0G1, Canada
| | - Yoann Seeleuthner
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France
| | - Marie Roelens
- Study Center for Primary Immunodeficiencies, Necker Hospital for Sick Children, AP-HP, 75015 Paris, France,Paris Cité University, 75006 Paris, France
| | - Lazaro Lorenzo
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France
| | - Camille Soudée
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France
| | - María Elvira Josefina Paz
- Department of Pediatric Pathology, Del Niño Jesus Hospital, T4000 San Miguel de Tucuman, Tucuman, Argentina
| | - Maria Laura Gonzalez
- Central Laboratory, Del Niño Jesus Hospital, T4000 San Miguel de Tucuman, Tucuman, Argentina
| | - Mohamed Jeljeli
- Cochin University Hospital, Biological Immunology Unit, AP-HP, 75014 Paris, France
| | - Jean Soulier
- Inserm/CNRS U944/7212, Paris Cité University, 75006 Paris, France,Hematology Laboratory, Saint-Louis Hospital, AP-HP, 75010 Paris, France,,National Reference Center for Bone Marrow Failures, Saint-Louis and Robert Debré Hospitals, 75010 Paris, France
| | - Serge Romana
- Rare Disease Genomic Medicine Department, Paris Cité University, Necker Hospital for Sick Children, 75015 Paris, France
| | | | - Marie Materna
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France
| | - Rubén Martínez-Barricarte
- Division of Genetic Medicine, Department of Medicine, Vanderbilt Genetics Institute, Vanderbilt University Medical Center, Nashville, TN 37232, USA,Department of Pathology, Microbiology, and Immunology, Vanderbilt Center for Immunobiology, Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Mathieu Pochon
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France
| | - Carmen Oleaga-Quintas
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France
| | - Alexandre Michev
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France
| | - Mélanie Migaud
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France
| | - Romain Lévy
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France,Pediatric Hematology-Immunology and Rheumatology Unit, Necker Hospital for Sick Children, AP-HP, 75015 Paris, France
| | | | - Flore Rozenberg
- Department of Virology, Paris Cité University, Cochin Hospital, 75014 Paris, France
| | - Carys A. Croft
- Innate Immunity Unit, Institut Pasteur, 75015 Paris, France,Inserm U1223, 75015 Paris, France,Paris Cité University, 75006 Paris, France
| | - Guillaume Vogt
- Inserm UMR1283, CNRS UMR8199, European Genomic Institute for Diabetes, Lille University, Lille Pasteur Institute, Lille University Hospital, 59000 Lille, France,Neglected Human Genetics Laboratory, Paris Cité University, 75006 Paris, France
| | - Jean-François Emile
- Pathology Department, Ambroise-Paré Hospital, AP-HP, 92100 Boulogne-Billancourt, France
| | - Laurent Kremer
- Infectious Disease Research Institute of Montpellier (IRIM), Montpellier University, 34000 Montpellier, France,Inserm, IRIM, 34293 Montpellier, France
| | - Cindy S. Ma
- Garvan Institute of Medical Research, Darlinghurst, NSW 2010, Australia,St. Vincent’s Clinical School, Faculty of Medicine, University of NSW, Sydney, NSW 2052, Australia
| | - Jörg H. Fritz
- Department of Microbiology and Immunology, McGill University, Montreal, QC H3A 0G1, Canada,McGill University Research Centre on Complex Traits, McGill University, Montreal, QC H3A 0G1, Canada,FOCiS Centre of Excellence in Translational Immunology, McGill University, Montreal, QC H3A 0G1, Canada,Department of Physiology, McGill University, Montreal, QC H3A 0G1, Canada
| | - Stanley M. Lemon
- Department of Medicine, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7292, USA
| | - András N. Spaan
- St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA,Department of Medical Microbiology, University Medical Center Utrecht, Utrecht University, 3584CX Utrecht, The Netherlands
| | - Nicolas Manel
- Institut Curie, PSL Research University, Inserm U932, 75005 Paris, France
| | - Laurent Abel
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France,St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Margaret R. MacDonald
- Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, NY 10065, USA
| | - Stéphanie Boisson-Dupuis
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France,St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Nico Marr
- Department of Immunology, Sidra Medicine, Doha, Qatar,College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Stuart G. Tangye
- Garvan Institute of Medical Research, Darlinghurst, NSW 2010, Australia,St. Vincent’s Clinical School, Faculty of Medicine, University of NSW, Sydney, NSW 2052, Australia
| | - James P. Di Santo
- Innate Immunity Unit, Institut Pasteur, 75015 Paris, France,Inserm U1223, 75015 Paris, France
| | - Qian Zhang
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France,St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Shen-Ying Zhang
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France,St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Charles M. Rice
- Laboratory of Virology and Infectious Disease, The Rockefeller University, New York, NY 10065, USA
| | - Vivien Béziat
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France,Paris Cité University, Imagine Institute, 75015 Paris, France,St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA
| | - Nico Lachmann
- Institute of Experimental Hematology, REBIRTH Center for Regenerative and Translational Medicine, Hannover Medical School, 30625 Hannover, Germany,Department of Pediatric Pulmonology, Allergology and Neonatology and Biomedical Research in Endstage and Obstructive Lung Disease, German Center for Lung Research, Hannover Medical School, 30625 Hannover, Germany, EU,Cluster of Excellence RESIST (EXC 2155), Hannover Medical School, 30625 Hannover, Germany
| | - David Langlais
- Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, QC H3A 0G1, Canada,Department of Microbiology and Immunology, McGill University, Montreal, QC H3A 0G1, Canada,Department of Human Genetics, McGill University, Montreal, QC H3A 0G1, Canada
| | - Jean-Laurent Casanova
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France; Paris Cité University, Imagine Institute, 75015 Paris, France; St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA; Department of Pediatrics, Necker Hospital for Sick Children, AP-HP, 75015 Paris, France; Howard Hughes Medical Institute, New York, NY 10065, USA.
| | - Philippe Gros
- Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, QC H3A 0G1, Canada,Department of Biochemistry, McGill University, Montreal, QC H3A 0G1, Canada
| | - Jacinta Bustamante
- Laboratory of Human Genetics of Infectious Diseases, Inserm U1163, 75015 Paris, France; Paris Cité University, Imagine Institute, 75015 Paris, France; St. Giles Laboratory of Human Genetics of Infectious Diseases, The Rockefeller University, New York, NY 10065, USA; Study Center for Primary Immunodeficiencies, Necker Hospital for Sick Children, AP-HP, 75015 Paris, France.
| |
Collapse
|
7
|
Sun L, Feng H, Misumi I, Shirasaki T, Hensley L, González-López O, Shiota I, Chou WC, Ting JPY, Cullen JM, Cowley DO, Whitmire JK, Lemon SM. Viral protease cleavage of MAVS in genetically modified mice with hepatitis A virus infection. J Hepatol 2023; 78:271-280. [PMID: 36152761 DOI: 10.1016/j.jhep.2022.09.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 05/20/2022] [Revised: 08/17/2022] [Accepted: 09/14/2022] [Indexed: 01/24/2023]
Abstract
BACKGROUND & AIMS Consistent with its relatively narrow host species range, hepatitis A virus (HAV) cannot infect C57BL/6 mice. However, in Mavs-/- mice with genetic deficiency of the innate immune signaling adaptor MAVS, HAV replicates robustly in the absence of disease. The HAV 3ABC protease cleaves MAVS in human cells, thereby disrupting virus-induced IFN responses, but it cannot cleave murine MAVS (mMAVS) due to sequence differences at the site of scission. Here, we sought to elucidate the role of 3ABC MAVS cleavage in determining HAV pathogenesis and host species range. METHODS Using CRISPR/Cas9 gene editing, we established two independent lineages of C57BL/6 mice with knock-in mutations altering two amino acids in mMAVS ('mMAVS-VS'), rendering it susceptible to 3ABC cleavage without loss of signaling function. We challenged homozygous Mavsvs/vs mice with HAV, and compared infection outcomes with C57BL/6 and genetically deficient Mavs-/- mice. RESULTS The humanized murine mMAVS-VS protein was cleaved as efficiently as human MAVS when co-expressed with 3ABC in Huh-7 cells. In embyronic fibroblasts from Mavsvs/vs mice, mMAVS-VS was cleaved by ectopically expressed 3ABC, significantly disrupting Sendai virus-induced IFN responses. However, in contrast to Mavs-/- mice with genetic MAVS deficiency, HAV failed to establish infection in Mavsvs/vs mice, even with additional genetic knockout of Trif or Irf1. Nonetheless, when crossed with permissive Ifnar1-/- mice lacking type I IFN receptors, Mavsvs/vsIfnar1-/- mice demonstrated enhanced viral replication coupled with significant reductions in serum alanine aminotransferase, hepatocellular apoptosis, and intrahepatic inflammatory cell infiltrates compared with Ifnar1-/- mice. CONCLUSIONS MAVS cleavage by 3ABC boosts viral replication and disrupts disease pathogenesis, but it is not by itself sufficient to break the host-species barrier to HAV infection in mice. IMPACT AND IMPLICATIONS The limited host range of human hepatitis viruses could be explained by species-specific viral strategies that disrupt innate immune responses. Both hepatitis A virus (HAV) and hepatitis C virus express viral proteases that cleave the innate immune adaptor protein MAVS, in human but not mouse cells. However, the impact of this immune evasion strategy has never been assessed in vivo. Here we show that HAV 3ABC protease cleavage of MAVS enhances viral replication and lessens liver inflammation in mice lacking interferon receptors, but that it is insufficient by itself to overcome the cross-species barrier to infection in mice. These results enhance our understanding of how hepatitis viruses interact with the host and their impact on innate immune responses.
Collapse
Affiliation(s)
- Lu Sun
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Hui Feng
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Ichiro Misumi
- Department of Genetics, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599 USA
| | - Takayoshi Shirasaki
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Lucinda Hensley
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Olga González-López
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Itoe Shiota
- Department of Genetics, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599 USA
| | - Wei-Chun Chou
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Jenny P-Y Ting
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA; Department of Genetics, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599 USA
| | - John M Cullen
- College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina 27607, USA
| | - Dale O Cowley
- Department of Genetics, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599 USA; Animal Models Core Facility, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Jason K Whitmire
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA; Department of Genetics, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599 USA; Department of Microbiology & Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Stanley M Lemon
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA; Department of Microbiology & Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA; Department of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
| |
Collapse
|
8
|
Li YY, Kuroki K, Shimakami T, Murai K, Kawaguchi K, Shirasaki T, Nio K, Sugimoto S, Nishikawa T, Okada H, Orita N, Takayama H, Wang Y, Thi Bich PD, Ishida A, Iwabuchi S, Hashimoto S, Shimaoka T, Tabata N, Watanabe-Takahashi M, Nishikawa K, Yanagawa H, Seiki M, Matsushima K, Yamashita T, Kaneko S, Honda M. Hepatitis B Virus Utilizes a Retrograde Trafficking Route via the Trans-Golgi Network to Avoid Lysosomal Degradation. Cell Mol Gastroenterol Hepatol 2023; 15:533-558. [PMID: 36270602 PMCID: PMC9868690 DOI: 10.1016/j.jcmgh.2022.10.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Hepatitis B virus (HBV) infection is difficult to cure owing to the persistence of covalently closed circular viral DNA (cccDNA). We performed single-cell transcriptome analysis of newly established HBV-positive and HBV-negative hepatocellular carcinoma cell lines and found that dedicator of cytokinesis 11 (DOCK11) was crucially involved in HBV persistence. However, the roles of DOCK11 in the HBV lifecycle have not been clarified. METHODS The cccDNA levels were measured by Southern blotting and real-time detection polymerase chain reaction in various hepatocytes including PXB cells by using an HBV-infected model. The retrograde trafficking route of HBV capsid was investigated by super-resolution microscopy, proximity ligation assay, and time-lapse analysis. The downstream molecules of DOCK11 and underlying mechanism were examined by liquid chromatography-tandem mass spectrometry, immunoblotting, and enzyme-linked immunosorbent assay. RESULTS The cccDNA levels were strongly increased by DOCK11 overexpression and repressed by DOCK11 suppression. Interestingly, DOCK11 functionally associated with retrograde trafficking proteins in the trans-Golgi network (TGN), Arf-GAP with GTPase domain, ankyrin repeat, and pleckstrin homology domain-containing protein 2 (AGAP2), and ADP-ribosylation factor 1 (ARF1), together with HBV capsid, to open an alternative retrograde trafficking route for HBV from early endosomes (EEs) to the TGN and then to the endoplasmic reticulum (ER), thereby avoiding lysosomal degradation. Clinically, DOCK11 levels in liver biopsies from patients with chronic hepatitis B were significantly reduced by entecavir treatment, and this reduction correlated with HBV surface antigen levels. CONCLUSIONS HBV uses a retrograde trafficking route via EEs-TGN-ER for infection that is facilitated by DOCK11 and serves to maintain cccDNA. Therefore, DOCK11 is a potential therapeutic target to prevent persistent HBV infection.
Collapse
Affiliation(s)
- Ying-Yi Li
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kazuyuki Kuroki
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kazuhisa Murai
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Takayoshi Shirasaki
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Kouki Nio
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Saiho Sugimoto
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Tomoki Nishikawa
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Noriaki Orita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Hideo Takayama
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Ying Wang
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Phuong Doan Thi Bich
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Astuya Ishida
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Sadahiro Iwabuchi
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | - Shinichi Hashimoto
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | - Takeshi Shimaoka
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba, Japan
| | | | | | - Kiyotaka Nishikawa
- Department of Molecular Life Sciences, Doshisha University, Kyoto, Japan
| | | | - Motoharu Seiki
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kouji Matsushima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan; Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan.
| |
Collapse
|
9
|
Shirasaki T, González-López O, McKnight KL, Xie L, Shiota T, Chen X, Feng H, Lemon SM. Nonlytic Quasi-Enveloped Hepatovirus Release Is Facilitated by pX Protein Interaction with the E3 Ubiquitin Ligase ITCH. J Virol 2022; 96:e0119522. [PMID: 36286484 PMCID: PMC9645215 DOI: 10.1128/jvi.01195-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 08/01/2022] [Accepted: 09/20/2022] [Indexed: 11/20/2022] Open
Abstract
Hepatoviruses are atypical hepatotropic picornaviruses that are released from infected cells without lysis in small membranous vesicles. These exosome-like, quasi-enveloped virions (eHAV) are infectious and the only form of hepatitis A virus (HAV) found circulating in blood during acute infection. eHAV is released through multivesicular endosomes in a process dependent on endosomal sorting complexes required for transport (ESCRT). Capsid protein interactions with the ESCRT-associated Bro1 domain proteins, ALG-2-interacting protein X (ALIX) and His domain-containing protein tyrosine phosphatase (HD-PTP), which are both recruited to the pX domain of 1D (VP1pX), are critical for this process. Previous proteomics studies suggest pX also binds the HECT domain, NEDD4 family E3 ubiquitin ligase, ITCH. Here, we confirm this interaction and show ITCH binds directly to the carboxy-terminal half of pX from both human and bat hepatoviruses independently of ALIX. A small chemical compound (compound 5) designed to disrupt interactions between WW domains of NEDD4 ligases and substrate molecules blocked ITCH binding to pX and demonstrated substantial antiviral activity against HAV. CRISPR deletion or small interfering RNA (siRNA) knockdown of ITCH expression inhibited the release of a self-assembling nanocage protein fused to pX and also impaired the release of eHAV from infected cells. The release could be rescued by overexpression of wild-type ITCH, but not a catalytically inactive ITCH mutant. Despite this, we found no evidence that ITCH ubiquitylates pX or that eHAV release is strongly dependent upon Lys residues in pX. These data indicate ITCH plays an important role in the ESCRT-dependent release of quasi-enveloped hepatovirus, although the substrate molecule targeted for ubiquitylation remains to be determined. IMPORTANCE Mechanisms underlying the cellular release of quasi-enveloped hepatoviruses are only partially understood, yet play a crucial role in the pathogenesis of this common agent of viral hepatitis. Multiple NEDD4 family E3 ubiquitin ligases, including ITCH, have been reported to promote the budding of conventional enveloped viruses but are not known to function in the release of HAV or other picornaviruses from infected cells. Here, we show that the unique C-terminal pX extension of the VP1 capsid protein of HAV interacts directly with ITCH and that ITCH promotes eHAV release in a manner analogous to its role in budding of some conventional enveloped viruses. The catalytic activity of ITCH is required for efficient eHAV release and may potentially function to ubiquitylate the viral capsid or activate ESCRT components.
Collapse
Affiliation(s)
- Takayoshi Shirasaki
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Olga González-López
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Kevin L. McKnight
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Ling Xie
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Tomoyuki Shiota
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Xian Chen
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Hui Feng
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Stanley M. Lemon
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| |
Collapse
|
10
|
Kamoshita K, Tajima-Shirasaki N, Ishii KA, Shirasaki T, Takayama H, Abuduwaili H, Abuduyimiti T, Oo HK, Yao X, Li Q, Galicia-Medina CM, Kaneko S, Takamura T. Forkhead box protein O1 (FoxO1) knockdown accelerates the eicosapentaenoic acid (EPA)-mediated Selenop downregulation independently of sterol regulatory element-binding protein-1c (SREBP-1c) in H4IIEC3 hepatocytes. Endocr J 2022; 69:907-918. [PMID: 35321982 DOI: 10.1507/endocrj.ej21-0392] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Selenoprotein P is upregulated in type 2 diabetes, causing insulin and exercise resistance. We have previously reported that eicosapentaenoic acid (EPA) negatively regulates Selenop expression by suppressing Srebf1 in H4IIEC3 hepatocytes. However, EPA downregulated Srebf1 long before downregulating Selenop. Here, we report additional novel mechanisms for the Selenop gene regulation by EPA. EPA upregulated Foxo1 mRNA expression, which was canceled with the ERK1/2 inhibitor, but not with the PKA inhibitor. Foxo1 knockdown by siRNA initiated early suppression of Selenop, but not Srebf1, by EPA. However, EPA did not affect the nuclear translocation of the FoxO1 protein. Neither ERK1/2 nor PKA inhibitor affected FoxO1 nuclear translocation. In summary, FoxO1 knockdown accelerates the EPA-mediated Selenop downregulation independent of SREBP-1c in hepatocytes. EPA upregulates Foxo1 mRNA via the ERK1/2 pathway without altering its protein and nuclear translocation. These findings suggest redundant and conflicting transcriptional networks in the lipid-induced redox regulation.
Collapse
Affiliation(s)
- Kyoko Kamoshita
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Natsumi Tajima-Shirasaki
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Kiyo-Aki Ishii
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
- Department of Integrative Medicine for Longevity, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Takayoshi Shirasaki
- Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Kanazawa 920-8641, Japan
| | - Hiroaki Takayama
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
- Life Sciences Division, Engineering and Technology Department, Kanazawa University, Kanazawa 920-8641, Japan
| | - Halimulati Abuduwaili
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Tuerdiguli Abuduyimiti
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Hein Ko Oo
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Xingyu Yao
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Qifang Li
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Cynthia M Galicia-Medina
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Shuichi Kaneko
- Department of System Biology, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Toshinari Takamura
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| |
Collapse
|
11
|
Shirasaki T, Feng H, Duyvesteyn HME, Fusco WG, McKnight KL, Xie L, Boyce M, Kumar S, Barouch-Bentov R, González-López O, McNamara R, Wang L, Hertel-Wulff A, Chen X, Einav S, Duncan JA, Kapustina M, Fry EE, Stuart DI, Lemon SM. Nonlytic cellular release of hepatitis A virus requires dual capsid recruitment of the ESCRT-associated Bro1 domain proteins HD-PTP and ALIX. PLoS Pathog 2022; 18:e1010543. [PMID: 35969644 PMCID: PMC9410543 DOI: 10.1371/journal.ppat.1010543] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 08/25/2022] [Accepted: 07/18/2022] [Indexed: 12/01/2022] Open
Abstract
Although picornaviruses are conventionally considered 'nonenveloped', members of multiple picornaviral genera are released nonlytically from infected cells in extracellular vesicles. The mechanisms underlying this process are poorly understood. Here, we describe interactions of the hepatitis A virus (HAV) capsid with components of host endosomal sorting complexes required for transport (ESCRT) that play an essential role in release. We show release of quasi-enveloped virus (eHAV) in exosome-like vesicles requires a conserved export signal located within the 8 kDa C-terminal VP1 pX extension that functions in a manner analogous to late domains of canonical enveloped viruses. Fusing pX to a self-assembling engineered protein nanocage (EPN-pX) resulted in its ESCRT-dependent release in extracellular vesicles. Mutational analysis identified a 24 amino acid peptide sequence located within the center of pX that was both necessary and sufficient for nanocage release. Deleting a YxxL motif within this sequence ablated eHAV release, resulting in virus accumulating intracellularly. The pX export signal is conserved in non-human hepatoviruses from a wide range of mammalian species, and functional in pX sequences from bat hepatoviruses when fused to the nanocage protein, suggesting these viruses are released as quasi-enveloped virions. Quantitative proteomics identified multiple ESCRT-related proteins associating with EPN-pX, including ALG2-interacting protein X (ALIX), and its paralog, tyrosine-protein phosphatase non-receptor type 23 (HD-PTP), a second Bro1 domain protein linked to sorting of ubiquitylated cargo into multivesicular endosomes. RNAi-mediated depletion of either Bro1 domain protein impeded eHAV release. Super-resolution fluorescence microscopy demonstrated colocalization of viral capsids with endogenous ALIX and HD-PTP. Co-immunoprecipitation assays using biotin-tagged peptides and recombinant proteins revealed pX interacts directly through the export signal with N-terminal Bro1 domains of both HD-PTP and ALIX. Our study identifies an exceptionally potent viral export signal mediating extracellular release of virus-sized protein assemblies and shows release requires non-redundant activities of both HD-PTP and ALIX.
Collapse
Affiliation(s)
- Takayoshi Shirasaki
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Hui Feng
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Helen M. E. Duyvesteyn
- Division of Structural Biology, The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
- Diamond Light Source, Didcot, United Kingdom
| | - William G. Fusco
- Department of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Kevin L. McKnight
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Ling Xie
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Mark Boyce
- Division of Structural Biology, The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - Sathish Kumar
- Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California, United States of America
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, California, United States of America
| | - Rina Barouch-Bentov
- Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California, United States of America
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, California, United States of America
| | - Olga González-López
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Ryan McNamara
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Li Wang
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Adriana Hertel-Wulff
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Xian Chen
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Shirit Einav
- Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California, United States of America
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, California, United States of America
- Chan-Zuckerberg BioHub, San Francisco, California, United States of America
| | - Joseph A. Duncan
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Pharmacology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Maryna Kapustina
- Department of Cell Biology & Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Elizabeth E. Fry
- Division of Structural Biology, The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - David I. Stuart
- Division of Structural Biology, The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
- Diamond Light Source, Didcot, United Kingdom
| | - Stanley M. Lemon
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Microbiology & Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| |
Collapse
|
12
|
Sumiyadorj A, Murai K, Shimakami T, Kuroki K, Nishikawa T, Kakuya M, Yamada A, Wang Y, Ishida A, Shirasaki T, Kawase S, Li YY, Okada H, Nio K, Kawaguchi K, Yamashita T, Sakai Y, Duger D, Mizukoshi E, Honda M, Kaneko S. A single hepatitis B virus genome with a reporter allows the entire viral life cycle to be monitored in primary human hepatocytes. Hepatol Commun 2022; 6:2441-2454. [PMID: 35691027 PMCID: PMC9426382 DOI: 10.1002/hep4.2018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 11/05/2021] [Revised: 03/22/2022] [Accepted: 05/05/2022] [Indexed: 11/10/2022] Open
Abstract
For the development of antiviral agents to eliminate hepatitis B virus (HBV), it is essential to establish an HBV cell culture system that can easily monitor HBV infection. Here, we created a novel HBV infection monitoring system using a luminescent 11-amino acid reporter, the high-affinity subunit of nano-luciferase binary technology (HiBiT). The HiBiT-coding sequence was inserted at the N-terminus of preS1 in a 1.2-fold plasmid encoding a genotype C HBV genome. After transfection of HepG2 cells with this HiBiT-containing plasmid, the supernatant was used to prepare a recombinant cell culture-derived virus (HiBiT-HBVcc). Primary human hepatocytes (PXB) were inoculated with HiBiT-HBVcc. Following inoculation, intracellular and extracellular HiBiT activity and the levels of various HBV markers were determined. Reinfection of naive PXB cells with HiBiT-HBVcc prepared from HiBiT-HBVcc-infected PXB cells was analyzed. When PXB cells were infected with HiBiT-HBVcc at several titers, extracellular HiBiT activity was detected in a viral titer-dependent manner and was correlated with intracellular HiBiT activity. Inhibitors of HBV entry or replication suppressed extracellular HiBiT activity. Viral DNA, RNA, and proteins were detectable, including covalently closed circular DNA, by Southern blot analysis. The synthesis of relaxed-circular DNA from single-stranded DNA in HiBiT-HBV decreased to one third of that of wild-type HBV, and the infectivity of HiBiT-HBVcc decreased to one tenth of that of wild-type HBVcc. HiBiT-HBVcc prepared from PXB cells harboring HiBiT-HBV was able to infect naive PXB cells. Conclusions: Recombinant HiBiT-HBV can undergo the entire viral life cycle, thus facilitating high-throughput screening for HBV infection in vitro using supernatants. This system will be a powerful tool for developing antiviral agents.
Collapse
Affiliation(s)
- Ariunaa Sumiyadorj
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kazuhisa Murai
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kazuyuki Kuroki
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Tomoki Nishikawa
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masaki Kakuya
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Atsumu Yamada
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Ying Wang
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Atsuya Ishida
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Shotaro Kawase
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Ying-Yi Li
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kouki Nio
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Yoshio Sakai
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Davaadorj Duger
- Department of Gastroenterology, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - Eishiro Mizukoshi
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| |
Collapse
|
13
|
Ide M, Tabata N, Yonemura Y, Shirasaki T, Murai K, Wang Y, Ishida A, Okada H, Honda M, Kaneko S, Doi N, Ito S, Yanagawa H. Guanine nucleotide exchange factor DOCK11-binding peptide fused with a single chain antibody inhibits Hepatitis B Virus infection and replication. J Biol Chem 2022; 298:102097. [PMID: 35660020 PMCID: PMC9241042 DOI: 10.1016/j.jbc.2022.102097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 01/31/2022] [Revised: 05/19/2022] [Accepted: 05/23/2022] [Indexed: 12/26/2022] Open
Abstract
Hepatitis B virus (HBV) infection is a major global health problem with no established cure. Dedicator of cytokinesis 11 (DOCK11), known as a guanine nucleotide exchange factor (GEF) for Cdc42, is reported to be essential for the maintenance of HBV. However, potential therapeutic strategies targeting DOCK11 have not yet been explored. We have previously developed an in vitro virus method as a more efficient tool for the analysis of proteomics and evolutionary protein engineering. In this study, using the in vitro virus method, we screened and identified a novel antiasialoglycoprotein receptor (ASGR) antibody, ASGR3-10M, and a DOCK11-binding peptide, DCS8-42A, for potential use in HBV infection. We further constructed a fusion protein (10M-D42AN) consisting of ASGR3-10M, DCS8-42A, a fusogenic peptide, and a nuclear localization signal to deliver the peptide inside hepatocytes. We show using immunofluorescence staining that 10M-D42AN was endocytosed into early endosomes and released into the cytoplasm and nucleus. Since DCS8-42A shares homology with activated cdc42-associated kinase 1 (Ack1), which promotes EGFR endocytosis required for HBV infection, we also found that 10M-D42AN inhibited endocytosis of EGFR and Ack1. Furthermore, we show 10M-D42AN suppressed the function of DOCK11 in the host DNA repair system required for covalently closed circular DNA synthesis and suppressed HBV proliferation in mice. In conclusion, this study realizes a novel hepatocyte-specific drug delivery system using an anti-ASGR antibody, a fusogenic peptide, and DOCK11-binding peptide to provide a novel treatment for HBV.
Collapse
Affiliation(s)
- Mayuko Ide
- Research Department, Purotech Bio Inc, Yokohama, Kanagawa, 230-0045, Japan
| | - Noriko Tabata
- Research Department, Purotech Bio Inc, Yokohama, Kanagawa, 230-0045, Japan
| | - Yuko Yonemura
- Research Department, Purotech Bio Inc, Yokohama, Kanagawa, 230-0045, Japan
| | - Takayoshi Shirasaki
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Ishikawa, 920-0942, Japan
| | - Kazuhisa Murai
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Ishikawa, 920-0942, Japan
| | - Ying Wang
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Ishikawa, 920-0942, Japan
| | - Atsuya Ishida
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Ishikawa, 920-0942, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Ishikawa, 920-8641, Japan
| | - Masao Honda
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Ishikawa, 920-0942, Japan; Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Ishikawa, 920-8641, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Ishikawa, 920-8641, Japan
| | - Nobuhide Doi
- Department of Biosciences and Informatics, Keio University, Yokohama, Kanagawa, 223-8522, Japan
| | - Satoru Ito
- Research Department, Purotech Bio Inc, Yokohama, Kanagawa, 230-0045, Japan
| | - Hiroshi Yanagawa
- Research Department, Purotech Bio Inc, Yokohama, Kanagawa, 230-0045, Japan.
| |
Collapse
|
14
|
Shirasaki T, Murai K, Honda M, Okada H, Innami Y, Yamada A, Shimakami T, Kawaguchi K, Yamashita T, Sakai Y, Kaneko S. Establishment of liver tumor cell lines from atherogenic and high fat diet fed hepatitis C virus transgenic mice. Sci Rep 2021; 11:13021. [PMID: 34158541 PMCID: PMC8219799 DOI: 10.1038/s41598-021-92128-9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 06/03/2021] [Indexed: 11/08/2022] Open
Abstract
A syngeneic mouse model bearing a transplanted tumor is indispensable for the evaluation of the efficacy of immune checkpoint inhibitors (ICIs). However, few syngeneic mouse models of liver cancer are available. We established liver tumor cell lines (MHCF1 and MHCF5) from hepatitis C virus transgenic mice fed an atherogenic high-fat diet. MHCF1 and MHCF5 were successfully transplanted into the subcutaneous space of syngeneic C57BL/6 mice, in addition, they efficiently developed orthotopic tumors in the liver of syngeneic C57BL/6 mice. MHCF5 grew rapidly and showed a more malignant phenotype compared with MHCF1. Histologically, MHCF1-derived tumors were a combined type of hepatocellular carcinoma and MHCF5-derived tumors showed a sarcomatous morphology. Interestingly, MHCF1 and MHCF5 showed different sensitivity against an anti-PD1 antibody and MHCF5-derived tumors were resistant to this antibody. CD8 T cells infiltrated the MHCF1-derived tumors, but no CD8 T cells were found within the MHCF5-derived tumors. Gene expression profiling and whole-exon sequencing revealed that MHCF5 displayed the features of an activated cancer stem cell-like signature of sonic hedgehog and Wnt signaling. Therefore, these cell lines could be useful for the identification of new biomarkers and molecular mechanisms of ICI resistance and the development of new drugs against liver cancer.
Collapse
MESH Headings
- Allografts/pathology
- Animals
- Antibodies, Neoplasm/metabolism
- Atherosclerosis/pathology
- Carcinoma, Hepatocellular/immunology
- Carcinoma, Hepatocellular/pathology
- Carcinoma, Hepatocellular/virology
- Cell Line, Tumor
- Diet, High-Fat
- Disease Models, Animal
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Hepacivirus/physiology
- Liver Neoplasms/immunology
- Liver Neoplasms/pathology
- Liver Neoplasms/virology
- Mice, Inbred C57BL
- Mice, Transgenic
- Mutation/genetics
- Programmed Cell Death 1 Receptor/metabolism
- Signal Transduction/genetics
- Spleen/pathology
- Exome Sequencing
- Mice
Collapse
Affiliation(s)
- Takayoshi Shirasaki
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Takara-machi 13-1, Kanazawa, 920-8641, Japan
- Department of Laboratory Medicine, Graduate School of Health Medicine, Kanazawa University, Kanazawa, Japan
| | - Kazuhisa Murai
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Takara-machi 13-1, Kanazawa, 920-8641, Japan
- Department of Laboratory Medicine, Graduate School of Health Medicine, Kanazawa University, Kanazawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Takara-machi 13-1, Kanazawa, 920-8641, Japan.
- Department of Laboratory Medicine, Graduate School of Health Medicine, Kanazawa University, Kanazawa, Japan.
| | - Hikari Okada
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Takara-machi 13-1, Kanazawa, 920-8641, Japan
| | - Yuika Innami
- Department of Laboratory Medicine, Graduate School of Health Medicine, Kanazawa University, Kanazawa, Japan
| | - Atsumu Yamada
- Department of Laboratory Medicine, Graduate School of Health Medicine, Kanazawa University, Kanazawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Takara-machi 13-1, Kanazawa, 920-8641, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Takara-machi 13-1, Kanazawa, 920-8641, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Takara-machi 13-1, Kanazawa, 920-8641, Japan
| | - Yoshio Sakai
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Takara-machi 13-1, Kanazawa, 920-8641, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Takara-machi 13-1, Kanazawa, 920-8641, Japan
| |
Collapse
|
15
|
Hashimoto S, Shirasaki T, Yamashita T, Iwabuchi S, Suzuki Y, Takamura Y, Ukita Y, Deshimaru S, Okayama T, Ikeo K, Kuroki K, Kawaguchi K, Mizukoshi E, Matsushima K, Honda M, Kaneko S. DOCK11 and DENND2A play pivotal roles in the maintenance of hepatitis B virus in host cells. PLoS One 2021; 16:e0246313. [PMID: 33539396 PMCID: PMC7861363 DOI: 10.1371/journal.pone.0246313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 01/15/2021] [Indexed: 01/05/2023] Open
Abstract
Human hepatitis B virus (HBV) infection remains a serious health problem worldwide. However, the mechanism for the maintenance of HBV in a latent state within host cells remains unclear. Here, using single-cell RNA sequencing analysis, we identified four genes linked to the maintenance of HBV in a liver cell line expressing HBV RNA at a low frequency. These genes included DOCK11 and DENND2A, which encode small GTPase regulators. In primary human hepatocytes infected with HBV, knockdown of these two genes decreased the amount of both HBV DNA and covalently closed circular DNA to below the limit of detection. Our findings reveal a role for DOCK11 and DENND2A in the maintenance of HBV.
Collapse
Affiliation(s)
- Shinichi Hashimoto
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
- Japan Science and Technology Agency, CREST, Tokyo, Japan
- * E-mail:
| | - Takayoshi Shirasaki
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Ishikawa, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Ishikawa, Japan
| | - Sadahiro Iwabuchi
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
- Japan Science and Technology Agency, CREST, Tokyo, Japan
| | - Yutaka Suzuki
- Department of Computational Biology, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan
| | - Yuzuru Takamura
- Department of Bioscience and Biotechnology, Japan Advanced Institute of Science and Technology, Ishikawa, Japan
| | - Yoshiaki Ukita
- Faculty of Engineering, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, Yamanashi, Japan
| | - Shungo Deshimaru
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute of Biomedical Sciences, Tokyo University of Science, Noda, Japan
| | - Toshitugu Okayama
- Laboratory of DNA Data Analysis, National Institute of Genetics, Shizuoka, Japan
| | - Kazuho Ikeo
- Laboratory of DNA Data Analysis, National Institute of Genetics, Shizuoka, Japan
| | - Kazuyuki Kuroki
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Ishikawa, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Ishikawa, Japan
| | - Eishiro Mizukoshi
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Ishikawa, Japan
| | - Kouji Matsushima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute of Biomedical Sciences, Tokyo University of Science, Noda, Japan
| | - Masao Honda
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Ishikawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Ishikawa, Japan
| |
Collapse
|
16
|
Kitabayashi J, Shirasaki T, Shimakami T, Nishiyama T, Welsch C, Funaki M, Murai K, Sumiyadorj A, Takatori H, Kitamura K, Kawaguchi K, Arai K, Yamashita T, Sakai Y, Yamashita T, Mizukoshi E, Honda M, Kaneko S. Upregulation of the Long Non-Coding RNA HULC by Hepatitis C Virus and its Regulation of Viral Replication. J Infect Dis 2020; 226:407-419. [PMID: 32515477 PMCID: PMC9417122 DOI: 10.1093/infdis/jiaa325] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 02/22/2020] [Accepted: 06/05/2020] [Indexed: 12/11/2022] Open
Abstract
Background Many long noncoding RNAs (lncRNAs) have important roles in biological processes. The lncRNA HULC was found to be upregulated in human hepatoma tissues. HULC is thought to be involved in multiple steps of hepatoma development and progression; however, the relationship between HULC and hepatitis C virus (HCV) infection, which is a leading cause of hepatoma, remains unclear. Methods We examined the effect of HCV replication on HULC expression and the underlying mechanism using cell culture systems. Subsequently, we tested the effect of HULC suppression and overexpression on HCV replication. Finally, we examined the impact of HCV eradication on HULC expression using human liver tissue and blood samples. Results HCV replication increased HULC expression in cell cultures. A promoter assay showed that an HCV nonstructural protein, NS5A, increased HULC transcription. HULC suppression inhibited HCV replication; conversely, its overexpression enhanced HCV replication. These effects on HCV replication seemed to occur by the modification of HCV translation. Measurements from human liver and blood samples showed that HCV eradication significantly reduced HULC levels in the liver and blood. Conclusions HCV infection increases HULC expression in vitro and in vivo. HULC modulates HCV replication through an HCV internal ribosome entry site–directed translation step.
Collapse
Affiliation(s)
- Juria Kitabayashi
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Tomoaki Nishiyama
- Advanced Science Research Center, Kanazawa University, Takara-machi, Kanazawa, Japan
| | - Christoph Welsch
- Department of Internal Medicine I, University Hospital Frankfurt, Goethe University, Germany
| | - Masaya Funaki
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Kazuhisa Murai
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Ariunaa Sumiyadorj
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Hajime Takatori
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Kazuya Kitamura
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Kuniaki Arai
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Yoshio Sakai
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Tatsuya Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Eishiro Mizukoshi
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Takara-machi, Kanazawa, Ishikawa, Japan
| | | |
Collapse
|
17
|
Horii R, Honda M, Shirasaki T, Shimakami T, Shimizu R, Yamanaka S, Murai K, Kawaguchi K, Arai K, Yamashita T, Sakai Y, Yamashita T, Okada H, Nakamura M, Mizukoshi E, Kaneko S. MicroRNA-10a Impairs Liver Metabolism in Hepatitis C Virus-Related Cirrhosis Through Deregulation of the Circadian Clock Gene Brain and Muscle Aryl Hydrocarbon Receptor Nuclear Translocator-Like 1. Hepatol Commun 2019; 3:1687-1703. [PMID: 31832575 PMCID: PMC6887665 DOI: 10.1002/hep4.1431] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 04/05/2019] [Accepted: 09/04/2019] [Indexed: 12/13/2022] Open
Abstract
The circadian rhythm of the liver plays an important role in maintaining its metabolic homeostasis. We performed comprehensive expression analysis of microRNAs (miRNAs) using TaqMan polymerase chain reaction of liver biopsy tissues to identify the miRNAs that are significantly up‐regulated in advanced chronic hepatitis C (CHC). We found miR‐10a regulated various liver metabolism genes and was markedly up‐regulated by hepatitis C virus infection and poor nutritional conditions. The expression of miR‐10a was rhythmic and down‐regulated the expression of the circadian rhythm gene brain and muscle aryl hydrocarbon receptor nuclear translocator‐like 1 (Bmal1) by directly suppressing the expression of RA receptor‐related orphan receptor alpha (RORA). Overexpression of miR‐10a in hepatocytes blunted circadian rhythm of Bmal1 and inhibited the expression of lipid synthesis genes (sterol regulatory element binding protein [SREBP]1, fatty acid synthase [FASN], and SREBP2), gluconeogenesis (peroxisome proliferator‐activated receptor gamma coactivator 1 alpha [PGC1α]), protein synthesis (mammalian target of rapamycin [mTOR] and ribosomal protein S6 kinase [S6K]) and bile acid synthesis (liver receptor homolog 1 [LRH1]). The expression of Bmal1 was significantly correlated with the expression of mitochondrial biogenesis‐related genes and reduced Bmal1 was associated with increased serum alanine aminotransferase levels and progression of liver fibrosis in CHC. Thus, impaired circadian rhythm expression of Bmal1 by miR‐10a disturbs metabolic adaptations, leading to liver damage, and is closely associated with the exacerbation of abnormal liver metabolism in patients with advanced CHC. In patients with hepatitis C‐related liver cirrhosis, liver tissue miR‐10a levels were significantly associated with hepatic reserve, fibrosis markers, esophageal varix complications, and hepatitis C‐related hepatocellular carcinoma recurrence. Conclusion: MiRNA‐10a is involved in abnormal liver metabolism in cirrhotic liver through down‐regulation of the expression of the circadian rhythm gene Bmal1. Therefore, miR‐10a is a possible useful biomarker for estimating the prognosis of liver cirrhosis.
Collapse
Affiliation(s)
- Rika Horii
- Department of Gastroenterology Kanazawa University Graduate School of Medicine Kanazawa Japan
| | - Masao Honda
- Department of Gastroenterology Kanazawa University Graduate School of Medicine Kanazawa Japan.,Department of Laboratory Medicine Kanazawa University Graduate School of Health Medicine Kanazawa Japan
| | - Takayoshi Shirasaki
- Department of Laboratory Medicine Kanazawa University Graduate School of Health Medicine Kanazawa Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology Kanazawa University Graduate School of Medicine Kanazawa Japan
| | - Ryogo Shimizu
- Department of Laboratory Medicine Kanazawa University Graduate School of Health Medicine Kanazawa Japan
| | - Souma Yamanaka
- Department of Laboratory Medicine Kanazawa University Graduate School of Health Medicine Kanazawa Japan
| | - Kazuhisa Murai
- Department of Laboratory Medicine Kanazawa University Graduate School of Health Medicine Kanazawa Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology Kanazawa University Graduate School of Medicine Kanazawa Japan
| | - Kuniaki Arai
- Department of Gastroenterology Kanazawa University Graduate School of Medicine Kanazawa Japan
| | - Tatsuya Yamashita
- Department of Gastroenterology Kanazawa University Graduate School of Medicine Kanazawa Japan
| | - Yoshio Sakai
- Department of Gastroenterology Kanazawa University Graduate School of Medicine Kanazawa Japan
| | - Taro Yamashita
- Department of Gastroenterology Kanazawa University Graduate School of Medicine Kanazawa Japan
| | - Hikari Okada
- Department of Gastroenterology Kanazawa University Graduate School of Medicine Kanazawa Japan
| | - Mikiko Nakamura
- Department of Gastroenterology Kanazawa University Graduate School of Medicine Kanazawa Japan
| | - Eishiro Mizukoshi
- Department of Gastroenterology Kanazawa University Graduate School of Medicine Kanazawa Japan
| | - Shuichi Kaneko
- Department of Gastroenterology Kanazawa University Graduate School of Medicine Kanazawa Japan
| |
Collapse
|
18
|
Murai K, Honda M, Shirasaki T, Shimakami T, Omura H, Misu H, Kita Y, Takeshita Y, Ishii KA, Takamura T, Urabe T, Shimizu R, Okada H, Yamashita T, Sakai Y, Kaneko S. Induction of Selenoprotein P mRNA during Hepatitis C Virus Infection Inhibits RIG-I-Mediated Antiviral Immunity. Cell Host Microbe 2019; 25:588-601.e7. [PMID: 30974086 DOI: 10.1016/j.chom.2019.02.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 12/13/2017] [Accepted: 02/26/2019] [Indexed: 12/16/2022]
Abstract
Patients infected with hepatitis C virus (HCV) have an increased risk of developing type 2 diabetes. HCV infection is linked to various liver abnormalities, potentially contributing to this association. We show that HCV infection increases the levels of hepatic selenoprotein P (SeP) mRNA (SEPP1 mRNA) and serum SeP, a hepatokine linked to insulin resistance. SEPP1 mRNA inhibits type I interferon responses by limiting the function of retinoic-acid-inducible gene I (RIG-I), a sensor of viral RNA. SEPP1 mRNA binds directly to RIG-I and inhibits its activity. SEPP1 mRNA knockdown in hepatocytes causes a robust induction of interferon-stimulated genes and decreases HCV replication. Clinically, high SeP serum levels are significantly associated with treatment failure of direct-acting antivirals in HCV-infected patients. Thus, SeP regulates insulin resistance and innate immunity, possibly inducing immune tolerance in the liver, and its upregulation may explain the increased risk of type 2 diabetes in HCV-infected patients.
Collapse
Affiliation(s)
- Kazuhisa Murai
- Department of Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Masao Honda
- Department of Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan; Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan.
| | - Takayoshi Shirasaki
- Department of Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Hitoshi Omura
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Hirofumi Misu
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Yuki Kita
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Yumie Takeshita
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kiyo-Aki Ishii
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Toshinari Takamura
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Takeshi Urabe
- Public Central Hospital of Matto Ishikawa, Hakusan, Ishikawa, Japan
| | - Ryogo Shimizu
- Department of Laboratory Medicine, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Yoshio Sakai
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| |
Collapse
|
19
|
Wang Z, Kawaguchi K, Honda M, Hashimoto S, Shirasaki T, Okada H, Orita N, Shimakami T, Yamashita T, Sakai Y, Mizukoshi E, Murakami S, Kaneko S. Notch signaling facilitates hepatitis B virus covalently closed circular DNA transcription via cAMP response element-binding protein with E3 ubiquitin ligase-modulation. Sci Rep 2019; 9:1621. [PMID: 30733490 PMCID: PMC6367350 DOI: 10.1038/s41598-018-38139-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 12/18/2018] [Indexed: 12/16/2022] Open
Abstract
Notch1 is regulated by E3 ubiquitin ligases, with proteasomal degradation of the Notch intracellular domain affecting the transcription of target genes. cAMP response element-binding protein (CREB) mediates the transcription of hepatitis B virus (HBV) covalently closed circular DNA (cccDNA). We assessed the relationship between HBV cccDNA and Notch signaling activities. HBV cccDNA levels and relative gene expression were evaluated in HBV-replicating cells treated with Jagged1 shRNA and a γ-secretase inhibitor. The effects of these factors in surgically resected clinical samples were also assessed. Notch inhibition suppressed HBV cccDNA and CREB-related expression but increased ITCH and NUMB levels. Proteasome inhibitor augmented HBV cccDNA, restored Notch and CREB expression, and inhibited ITCH and NUMB function. Increased HBV cccDNA was observed after ITCH and NUMB blockage, even after treatment with the adenylate cyclase activator forskolin; protein kinase A (PKA) inhibitor had the opposite effect. Notch activation and E3 ligase inactivation were observed in HBV-positive cells in clinical liver tissue. Collectively, these findings reveal that Notch signaling activity facilitates HBV cccDNA transcription via CREB to trigger the downstream PKA-phospho-CREB cascade and is regulated by E3 ubiquitin ligase-modulation of the Notch intracellular domain.
Collapse
Affiliation(s)
- Zijing Wang
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Shinichi Hashimoto
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Noriaki Orita
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Yoshio Sakai
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Eishiro Mizukoshi
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Seishi Murakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| |
Collapse
|
20
|
Shirasaki T, Honda M, Yamashita T, Nio K, Shimakami T, Shimizu R, Nakasyo S, Murai K, Shirasaki N, Okada H, Sakai Y, Sato T, Suzuki T, Yoshioka K, Kaneko S. The osteopontin-CD44 axis in hepatic cancer stem cells regulates IFN signaling and HCV replication. Sci Rep 2018; 8:13143. [PMID: 30177680 PMCID: PMC6120883 DOI: 10.1038/s41598-018-31421-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 08/15/2018] [Indexed: 12/17/2022] Open
Abstract
Osteopontin (OPN) is involved in cell proliferation, migration, inflammation, and tumor progression in various tissues. OPN induces stemness by interacting with CD44, but the functional relevance of OPN-mediated interferon (IFN) signaling and hepatitis C virus (HCV) replication in stem cell populations remains unclear. In this study, we investigated the effect of OPN on HCV replication and IFN signaling in cancer stem cells (CSCs) positive for epithelial cell adhesion molecule (EpCAM) and CD44. We show that the EpCAM+/CD44+ CSCs show marked HCV replication when compared to EpCAM−/CD44− cells. In addition, OPN significantly enhances this HCV replication in EpCAM+/CD44+ CSCs and markedly suppresses IFN-stimulated gene expression. The GSK-3β inhibitor BIO increases the EpCAM+/CD44+ CSC population and OPN expression and impairs IFN signaling via STAT1 degradation. Taken together, our data suggest that OPN enhances HCV replication in the EpCAM+/CD44+ CSCs, while it also negatively regulates the IFN signaling pathway via inhibition of STAT1 phosphorylation and degradation. Therefore, OPN may represent a novel therapeutic target for treating HCV-related hepatocellular carcinoma.
Collapse
Affiliation(s)
- Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.,Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan. .,Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan.
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.,Department of General Medicine, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Kouki Nio
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Ryougo Shimizu
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.,Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Saki Nakasyo
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.,Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Kazuhisa Murai
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.,Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Natsumi Shirasaki
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Yoshio Sakai
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Tokiharu Sato
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Tetsuro Suzuki
- Department of Virology and Parasitology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Katsuji Yoshioka
- Division of Molecular Cell Signaling, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| |
Collapse
|
21
|
Okada H, Takabatake R, Honda M, Takegoshi K, Yamashita T, Nakamura M, Shirasaki T, Sakai Y, Shimakami T, Nagata N, Takamura T, Tanaka T, Kaneko S. Peretinoin, an acyclic retinoid, suppresses steatohepatitis and tumorigenesis by activating autophagy in mice fed an atherogenic high-fat diet. Oncotarget 2018; 8:39978-39993. [PMID: 28591717 PMCID: PMC5522259 DOI: 10.18632/oncotarget.18116] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 01/25/2017] [Accepted: 05/12/2017] [Indexed: 01/21/2023] Open
Abstract
The pathogenesis of non-alcoholic steatohepatitis (NASH) is still unclear and the prevention of the development of hepatocellular carcinoma (HCC) has not been established. We established an atherogenic and high-fat diet mouse model that develops hepatic steatosis, inflammation, fibrosis, and liver tumors at a high frequency. Using two NASH-HCC mouse models, we showed that peretinoin, an acyclic retinoid, significantly improved liver histology and reduced the incidence of liver tumors. Interestingly, we found that peretinoin induced autophagy in the liver of mice, which was characterized by the increased co-localized expression of microtubule-associated protein light chain 3B-II and lysosome-associated membrane protein 2, and increased autophagosome formation and autophagy flux in the liver. These findings were confirmed using primary mouse hepatocytes. Among representative autophagy pathways, the autophagy related (Atg) 5-Atg12-Atg16L1 pathway was impaired; especially, Atg16L1 was repressed at both the mRNA and protein level. Decreased Atg16L1 mRNA expression was also found in the liver of patients with NASH according to disease progression. Promoter analysis revealed that peretinoin activated the promoter of Atg16L1 by increasing the expression of CCAAT/enhancer-binding-protein-alpha. Interestingly, Atg16L1 overexpression in HepG2 cells inhibited palmitate-induced NF-kB activation and interleukin-6-induced STAT3 activation. We showed that Atg16L1 induced the de-phosphorylation of Gp130, a receptor subunit of interleukin-6 family cytokines, which subsequently repressed phosphorylated-STAT3 (Tyr705) levels, and this process might be independent of autophagy function. Thus, peretinoin prevents the progression of NASH and the development of HCC through activating the autophagy pathway by increased Atg16L1 expression, which is an essential regulator of autophagy and anti-inflammatory proteins.
Collapse
Affiliation(s)
- Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Riuta Takabatake
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan.,Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Kai Takegoshi
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Mikiko Nakamura
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Takayoshi Shirasaki
- Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Yoshio Sakai
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Naoto Nagata
- Department of Cell Metabolism and Nutrition, Brain/Liver Interface Medicine Research Center, Kanazawa University, Kanazawa, Japan
| | - Toshinari Takamura
- Department of Disease Control and Homeostasis, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Takuji Tanaka
- The Tohkai Cytopathology Institute, Cancer Research and Prevention, Gifu, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan.,Department of Disease Control and Homeostasis, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| |
Collapse
|
22
|
Murata K, Asano M, Matsumoto A, Sugiyama M, Nishida N, Tanaka E, Inoue T, Sakamoto M, Enomoto N, Shirasaki T, Honda M, Kaneko S, Gatanaga H, Oka S, Kawamura YI, Dohi T, Shuno Y, Yano H, Mizokami M. Induction of IFN-λ3 as an additional effect of nucleotide, not nucleoside, analogues: a new potential target for HBV infection. Gut 2018; 67:362-371. [PMID: 27789659 PMCID: PMC5868296 DOI: 10.1136/gutjnl-2016-312653] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 09/01/2016] [Accepted: 09/28/2016] [Indexed: 12/15/2022]
Abstract
OBJECTIVE The clinical significance of polymorphisms in the interleukin-28B gene encoding interferon (IFN)-λ3, which has antiviral effects, is known in chronic HCV but not in HBV infection. Thus, we measured IFN-λ3 levels in patients with HBV and investigated its clinical significance and association with nucleos(t)ide (NUC) analogue administration. DESIGN Serum IFN-λ3 level was measured in 254 patients with HBV with varying clinical conditions using our own high sensitivity method. The resulting values were compared with various clinical variables. In addition, cell lines originating from various organs were cultured with NUCs, and the production of IFN-λ3 was evaluated. RESULTS Higher serum IFN-λ3 levels were detected in the patients treated with nucleotide analogues (adefovir or tenofovir) compared with those treated with nucleoside analogues (lamivudine or entecavir). There were no other differences in the clinical background between the two groups. A rise in the serum IFN-λ3 levels was observed during additional administration of the nucleotide analogues. In vitro experiments showed that the nucleotide analogues directly and dose-dependently induced IFN-λ3 production only in colon cancer cells. Furthermore, the supernatant from cultured adefovir-treated colon cancer cells significantly induced IFN-stimulated genes (ISGs) and inhibited hepatitis B surface antigen (HBsAg) production in hepatoma cells, as compared with the supernatant from entecavir-treated cells. CONCLUSIONS We discovered that the nucleotide analogues show an additional pharmacological effect by inducing IFN-λ3 production, which further induces ISGs and results in a reduction of HBsAg production. These findings provide novel insights for HBV treatment and suggest IFN-λ3 induction as a possible target.
Collapse
Affiliation(s)
- Kazumoto Murata
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Mai Asano
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan
- Department of Hepatitis and Immunology, Nagoya City University Graduate School of Medical Science, Nagoya, Japan
| | - Akihiro Matsumoto
- Department of Medicine, Shinshu University of Medicine, Matsumoto, Japan
| | - Masaya Sugiyama
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Nao Nishida
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Eiji Tanaka
- Department of Medicine, Shinshu University of Medicine, Matsumoto, Japan
| | - Taisuke Inoue
- First Department of Medicine, University of Yamanashi, Chuo, Japan
| | - Minoru Sakamoto
- First Department of Medicine, University of Yamanashi, Chuo, Japan
| | - Nobuyuki Enomoto
- First Department of Medicine, University of Yamanashi, Chuo, Japan
| | - Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Hiroyuki Gatanaga
- AIDS Clinical Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Shinichi Oka
- AIDS Clinical Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Yuki I Kawamura
- Department of Gastroenterology, The Research Center for Hepatitis and Immunology, Research Institute, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Taeko Dohi
- Department of Gastroenterology, The Research Center for Hepatitis and Immunology, Research Institute, National Center for Global Health and Medicine, Ichikawa, Japan
| | - Yasutaka Shuno
- Division of Colorectal Surgery, Department of Surgery, National Center for Global Health and Medicine, Tokyo, Japan
| | - Hideaki Yano
- Division of Colorectal Surgery, Department of Surgery, National Center for Global Health and Medicine, Tokyo, Japan
| | - Masashi Mizokami
- The Research Center for Hepatitis and Immunology, National Center for Global Health and Medicine, Ichikawa, Japan
- Department of Hepatitis and Immunology, Nagoya City University Graduate School of Medical Science, Nagoya, Japan
| |
Collapse
|
23
|
Funaki M, Kitabayashi J, Shimakami T, Nagata N, Sakai Y, Takegoshi K, Okada H, Murai K, Shirasaki T, Oyama T, Yamashita T, Ota T, Takuwa Y, Honda M, Kaneko S. Peretinoin, an acyclic retinoid, inhibits hepatocarcinogenesis by suppressing sphingosine kinase 1 expression in vitro and in vivo. Sci Rep 2017; 7:16978. [PMID: 29208982 PMCID: PMC5717167 DOI: 10.1038/s41598-017-17285-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 11/22/2017] [Indexed: 02/07/2023] Open
Abstract
Sphingosine-1-phospate is a potent bioactive lipid metabolite that regulates cancer progression. Because sphingosine kinase 1 and sphingosine kinase 2 (SPHK 1/2) are both essential for sphingosine-1-phospate production, they could be a therapeutic target in various cancers. Peretinoin, an acyclic retinoid, inhibits post-therapeutic recurrence of hepatocellular carcinoma via unclear mechanisms. In this study, we assessed effects of peretinoin on SPHK expression and liver cancer development in vitro and in vivo. We examined effects of peretinoin on expression, enzymatic and promoter activity of SPHK1 in a human hepatoma cell line, Huh-7. We also investigated effects of SPHK1 on hepatocarcinogenesis induced by diethylnitrosamine using SPHK1 knockout mice. Peretinoin treatment of Huh-7 cells reduced mRNA levels, protein expression and enzymatic activity of SPHK1. Peretinoin reduced SPHK1 promoter activity; this effect of peretinoin was blocked by overexpression of Sp1, a transcription factor. Deletion of all Sp1 binding sites within the SPHK1 promoter region abolished SPHK1 promoter activity, suggesting that peretinoin reduced mRNA levels of SPHK1 via Sp1. Additionally, diethylnitrosamine-induced hepatoma was fewer and less frequent in SPHK1 knockout compared to wild-type mice. Our data showed crucial roles of SPHK1 in hepatocarcinogenesis and suggests that peretinoin prevents hepatocarcinogenesis by suppressing mRNA levels of SPHK1.
Collapse
Affiliation(s)
- Masaya Funaki
- Department of Gastroenterology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Juria Kitabayashi
- Department of Gastroenterology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University, Kanazawa, Ishikawa, Japan.
| | - Naoto Nagata
- Advanced Preventive Medical Sciences Research Center, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Yuriko Sakai
- Advanced Preventive Medical Sciences Research Center, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Kai Takegoshi
- Department of Gastroenterology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Kazuhisa Murai
- Department of Gastroenterology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Takeru Oyama
- Department of Molecular and Cellular Pathology, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Tsuguhito Ota
- Advanced Preventive Medical Sciences Research Center, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Yoh Takuwa
- Department of Physiology, Kanazawa University School of Medicine, Kanazawa, Ishikawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University, Kanazawa, Ishikawa, Japan
| |
Collapse
|
24
|
Suda T, Shimakami T, Shirasaki T, Yamashita T, Mizukoshi E, Honda M, Kaneko S. Reactivation of hepatitis B virus from an isolated anti-HBc positive patient after eradication of hepatitis C virus with direct-acting antiviral agents. J Hepatol 2017; 67:1108-1111. [PMID: 28739112 DOI: 10.1016/j.jhep.2017.07.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 02/06/2017] [Revised: 07/11/2017] [Accepted: 07/14/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Tsuyoshi Suda
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Ishikawa 920-8641, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Ishikawa 920-8641, Japan.
| | - Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Ishikawa 920-8641, Japan
| | - Tatsuya Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Ishikawa 920-8641, Japan
| | - Eishiro Mizukoshi
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Ishikawa 920-8641, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Ishikawa 920-8641, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Ishikawa 920-8641, Japan
| |
Collapse
|
25
|
Hayashi T, Yamashita T, Okada H, Oishi N, Sunagozaka H, Nio K, Hayashi T, Hara Y, Asahina Y, Yoshida M, Hashiba T, Suda T, Shirasaki T, Igarashi Y, Miyanouchi K, Yamashita T, Honda M, Kaneko S. A Novel mTOR Inhibitor; Anthracimycin for the Treatment of Human Hepatocellular Carcinoma. Anticancer Res 2017; 37:3397-3403. [PMID: 28668827 DOI: 10.21873/anticanres.11706] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 04/27/2017] [Revised: 05/24/2017] [Accepted: 05/25/2017] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Anthracimycin, a secondary metabolite of Streptomyces, has been shown to inhibit the invasion of certain cancer cell lines. MATERIALS AND METHODS In this study we evaluated the effect of anthracimycin on cell growth and signaling pathways in hepatocellular carcinoma (HCC). RESULTS Anthracimycin suppressed cell proliferation and motility and induced apoptosis in human HCC cell lines. Furthermore, anthracimycin had no effect on the enrichment of EpCAM-high liver cancer stem cells (CSCs), while fluorouracil dramatically enriched the CSCs with activation of the stemness-related genes EPCAM and SOX9 in HuH7 cells. Mechanistically, anthracimycin suppressed mammalian target of rapamycin (mTOR) signaling, and was most effective at inhibiting HCC cell proliferation with mTOR activation. CONCLUSION Anthracimycin is a novel mTOR inhibitor capable of suppressing the proliferation of CSCs and non-CSCs equally well in HCC, and it is suggested that anthracimycin could be effective in the eradication of HCC associated with mTOR-signaling activation.
Collapse
Affiliation(s)
- Tomoyuki Hayashi
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan .,Department of General Medicine, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Naoki Oishi
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Hajime Sunagozaka
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Kouki Nio
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Takehiro Hayashi
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Yasumasa Hara
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Yoshiro Asahina
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Mariko Yoshida
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Tomomi Hashiba
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Tsuyoshi Suda
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Yasuhiro Igarashi
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, Imizu, Japan
| | | | - Tatsuya Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| |
Collapse
|
26
|
Tajima-Shirasaki N, Ishii KA, Takayama H, Shirasaki T, Iwama H, Chikamoto K, Saito Y, Iwasaki Y, Teraguchi A, Lan F, Kikuchi A, Takeshita Y, Murao K, Matsugo S, Kaneko S, Misu H, Takamura T. Eicosapentaenoic acid down-regulates expression of the selenoprotein P gene by inhibiting SREBP-1c protein independently of the AMP-activated protein kinase pathway in H4IIEC3 hepatocytes. J Biol Chem 2017; 292:10791-10800. [PMID: 28465347 DOI: 10.1074/jbc.m116.747006] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [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: 07/07/2016] [Revised: 04/27/2017] [Indexed: 02/05/2023] Open
Abstract
Selenoprotein P (encoded by SELENOP in humans, Selenop in rat), a liver-derived secretory protein, induces resistance to insulin and vascular endothelial growth factor (VEGF) in type 2 diabetes. Suppression of selenoprotein P may provide a novel therapeutic approach to treating type 2 diabetes; however, few drugs inhibiting SELENOP expression in hepatocytes have been identified. The present findings demonstrate that eicosapentaenoic acid (EPA) suppresses SELENOP expression by inactivating sterol regulatory element-binding protein-1c (SREBP-1c, encoded by Srebf1 in rat) in H4IIEC3 hepatocytes. Treatment with EPA caused concentration- and time-dependent reduction in SELENOP promoter activity. EPA activated AMP-activated protein kinase (AMPK); however, the inhibitory effect of EPA on SELENOP promoter activity was not canceled with an AMPK inhibitor compound C and dominant-negative AMPK transfection. Deletion mutant promoter assays and computational analysis of transcription factor-binding sites conserved among the species resulted in identification of a sterol regulatory element (SRE)-like site in the SELENOP promoter. A chromatin immunoprecipitation (ChIP) assay revealed that EPA decreases binding of SREBP-1c to the SELENOP promoter. Knockdown of Srebf1 resulted in a significant down-regulation of Selenop expression. Conversely, SREBP-1c overexpression inhibited the suppressive effect of EPA. These data provide a novel mechanism of action for EPA involving improvement of systemic insulin sensitivity through the regulation of selenoprotein P production independently of the AMPK pathway and suggest an additional approach to developing anti-diabetic drugs.
Collapse
Affiliation(s)
| | - Kiyo-Aki Ishii
- From the Departments of Endocrinology and Metabolism.,System Biology, and
| | - Hiroaki Takayama
- From the Departments of Endocrinology and Metabolism.,System Biology, and
| | - Takayoshi Shirasaki
- System Biology, and.,Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, 13-1 Takara-machi, Kanazawa, Ishikawa 920-8641
| | - Hisakazu Iwama
- the Life Science Research Center, Kagawa University, Ikenobe 1750-1, Miki-cho, Kita-gun, Kagawa 761-0793
| | - Keita Chikamoto
- From the Departments of Endocrinology and Metabolism.,the Division of Natural System, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192
| | - Yoshiro Saito
- the Department of Medical Life Systems, Faculty of Medical and Life Sciences, Systems Life Sciences, Doshisha University, Kyotanabe, Kyoto 610-0394
| | | | | | - Fei Lan
- From the Departments of Endocrinology and Metabolism
| | - Akihiro Kikuchi
- From the Departments of Endocrinology and Metabolism.,System Biology, and
| | | | - Koji Murao
- the Department of Advanced Medicine, Kagawa University, Ikenobe 1750-1, Miki-cho, Kita-gun, Kagawa 761-0793, and
| | - Seiichi Matsugo
- the Division of Natural System, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192
| | | | - Hirofumi Misu
- From the Departments of Endocrinology and Metabolism.,PRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan
| | | |
Collapse
|
27
|
Liu F, Shimakami T, Murai K, Shirasaki T, Funaki M, Honda M, Murakami S, Yi M, Tang H, Kaneko S. Efficient Suppression of Hepatitis C Virus Replication by Combination Treatment with miR-122 Antagonism and Direct-acting Antivirals in Cell Culture Systems. Sci Rep 2016; 6:30939. [PMID: 27484655 PMCID: PMC4971519 DOI: 10.1038/srep30939] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 07/11/2016] [Indexed: 02/05/2023] Open
Abstract
Direct-acting antivirals (DAAs) against Hepatitis C virus (HCV) show effective antiviral activity with few side effects. However, the selection of DAA-resistance mutants is a growing problem that needs to be resolved. In contrast, miR-122 antagonism shows extensive antiviral effects among all HCV genotypes and a high barrier to drug resistance. In the present study, we evaluated three DAAs (simeprevir, daclatasvir, and sofosbuvir) in combination with anti-miR-122 treatment against HCV genotype 1a in cell cultures. We found that combination treatments with anti-miR-122 and a DAA had additive or synergistic antiviral effects. The EC50 values of simeprevir in simeprevir-resistant mutants were significantly decreased by combining simeprevir with anti-miR-122. A similar reduction in EC50 in daclatasvir-resistant mutants was achieved by combining daclatasvir with anti-miR-122. Combination treatment in HCV-replicating cells with DAA and anti-miR-122 sharply reduced HCV RNA amounts. Conversely, DAA single treatment with simeprevir or daclatasvir reduced HCV RNA levels initially, but the levels later rebounded. DAA-resistant mutants were less frequently observed in combination treatments than in DAA single treatments. In summary, the addition of miR-122 antagonism to DAA single treatments had additive or synergistic antiviral effects and helped to efficiently suppress HCV replication and the emergence of DAA-resistant mutants.
Collapse
Affiliation(s)
- Fanwei Liu
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Ishikawa 920-8641, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Ishikawa 920-8641, Japan
| | - Kazuhisa Murai
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Ishikawa 920-8641, Japan
| | - Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Ishikawa 920-8641, Japan
| | - Masaya Funaki
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Ishikawa 920-8641, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Ishikawa 920-8641, Japan
| | - Seishi Murakami
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Ishikawa 920-8641, Japan
| | - Minkyung Yi
- Department of Microbiology and Immunology, University of Texas Medical Branch at Galveston, Galveston, TX 77555-0144, USA
| | - Hong Tang
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Ishikawa 920-8641, Japan
| |
Collapse
|
28
|
Kawaguchi K, Honda M, Yamashita T, Okada H, Shirasaki T, Nishikawa M, Nio K, Arai K, Sakai Y, Yamashita T, Mizukoshi E, Kaneko S. Jagged1 DNA Copy Number Variation Is Associated with Poor Outcome in Liver Cancer. Am J Pathol 2016; 186:2055-2067. [PMID: 27315779 DOI: 10.1016/j.ajpath.2016.04.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 03/10/2016] [Accepted: 04/09/2016] [Indexed: 12/21/2022]
Abstract
Notch signaling abnormalities are reported to be involved in the acceleration of malignancy in solid tumors and stem cell formation or regeneration in various organs. We analyzed specific genes for DNA copy number variations in liver cancer cells and investigated whether these factors relate to clinical outcome. Chromosome 20p, which includes the ligand for Notch pathways, Jagged1, was found to be amplified in several types of hepatoma cells, and its mRNA was up-regulated according to α-fetoprotein gene expression levels. Notch inhibition using Jagged1 shRNA and γ-secretase inhibitors produced significant suppression of cell growth in α-fetoprotein-producing cells with suppression of downstream genes. Using in vivo hepatoma models, the administration of γ-secretase inhibitors resulted in reduced tumor sizes and effective Notch inhibition with widespread apoptosis and necrosis of viable tumor cells. The γ-secretase inhibitors suppressed cell growth of the epithelial cell adhesion molecule-positive fraction in hepatoma cells, indicating that Notch inhibitors could suppress the stem cell features of liver cancer cells. Even in clinical liver cancer samples, the expression of α-fetoprotein and Jagged1 showed significant correlation, and amplification of the copy number of Jagged1 was associated with Jagged1 mRNA expression and poor survival after liver cancer surgical resection. In conclusion, amplification of Jagged1 contributed to mRNA expression that activates the Jagged1-Notch signaling pathway in liver cancer and led to poor outcome.
Collapse
Affiliation(s)
- Kazunori Kawaguchi
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Masashi Nishikawa
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Kouki Nio
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Kuniaki Arai
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Yoshio Sakai
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Tatsuya Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Eishiro Mizukoshi
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
| |
Collapse
|
29
|
Honda M, Shirasaki T, Terashima T, Kawaguchi K, Nakamura M, Oishi N, Wang X, Shimakami T, Okada H, Arai K, Yamashita T, Sakai Y, Yamashita T, Mizukoshi E, Kaneko S. Hepatitis B Virus (HBV) Core-Related Antigen During Nucleos(t)ide Analog Therapy Is Related to Intra-hepatic HBV Replication and Development of Hepatocellular Carcinoma. J Infect Dis 2015; 213:1096-106. [PMID: 26621908 DOI: 10.1093/infdis/jiv572] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [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: 10/22/2015] [Accepted: 11/13/2015] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Although nucleos(t)ide analog (NA) therapy effectively reduces the hepatitis B virus (HBV) DNA load in the serum of patients with chronic hepatitis B, it does not completely reduce the incidence of hepatocellular carcinoma (HCC). METHODS AND RESULTS A total of 109 patients who had chronic hepatitis B and were receiving NA therapy were analyzed. Multivariate Cox regression analysis showed that age (>60 years had a hazard ratio [HR] of 2.66), FIB-4 index (an index of >2.1 had a HR of 2.57), and the presence of HBV core-related antigen (HBcrAg; HR, 3.53) during treatment were significantly associated with the development of HCC. The amount of HBV DNA and pregenomic RNA in liver were significantly higher in 16 HBcrAg-positive patients, compared with 12 HBcrAg-negative patients, suggesting active HBV replication in HBcrAg-positive livers. Hepatic gene expression profiling showed that HBV-promoting transcriptional factors, including HNF4α, PPARα, and LRH1, were upregulated in HBcrAg-positive livers. HepAD38 cells overexpressing LRH1 increased HBV replication, characterized by higher HBV DNA and pregenomic RNA levels, during long-term exposure to entecavir. Conversely, overexpression of precore/core in HepG2 cells increased levels of these transcriptional factors. Metformin efficiently repressed HBV replication in primary human hepatocytes. CONCLUSIONS Modulating HBV transcriptional factors by metformin in combination with NA therapy would potentiate anti-HBV activity and reduce the incidence of HCC in HBcrAg-positive patients.
Collapse
Affiliation(s)
- Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Takeshi Terashima
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Mikiko Nakamura
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Naoki Oishi
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Xuyang Wang
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Kuniaki Arai
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Yoshio Sakai
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Tatsuya Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Eishiro Mizukoshi
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Health Medicine, Japan
| |
Collapse
|
30
|
Okada H, Honda M, Campbell JS, Takegoshi K, Sakai Y, Yamashita T, Shirasaki T, Takabatake R, Nakamura M, Tanaka T, Kaneko S. Inhibition of microRNA-214 ameliorates hepatic fibrosis and tumor incidence in platelet-derived growth factor C transgenic mice. Cancer Sci 2015; 106:1143-52. [PMID: 26122702 PMCID: PMC4582983 DOI: 10.1111/cas.12730] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 06/12/2015] [Accepted: 06/23/2015] [Indexed: 12/25/2022] Open
Abstract
Differentially regulated microRNA (miRNA) are associated with hepatic fibrosis; however, their potential usefulness for blocking hepatic fibrosis has not been exploited fully. We examined the expression of miRNA in the liver of a transgenic mouse model in which platelet-derived growth factor C (PDGF-C) is overexpressed (Pdgf-c Tg), resulting in hepatic fibrosis and steatosis and the eventual development of hepatocellular carcinoma (HCC). Robust induction of miR-214 correlated with fibrogenesis in the liver of Pdgf-c Tg mice, atherogenic high-fat diet-induced NASH mice, and patients with chronic hepatitis B or C. Pdgf-c Tg mice were injected with locked nucleic acid (LNA)-antimiR-214 via the tail vein using Invivofectamine 2.0 and the degree of hepatic fibrosis and tumor incidence were evaluated. Pdgf-c Tg mice treated with LNA-antimiR-214 showed a marked reduction in fibrosis and tumor incidence compared with saline or LNA-miR-control-injected control mice. In vitro, LNA-antimiR-214 significantly ameliorated TGF-β1-induced pro-fibrotic gene expression in Lx-2 cells. MiR-214 targets a negative regulator of EGFR signaling, Mig-6. Mimic-miR-214 decreased the expression of Mig-6 and increased the levels of EGF-mediated p-EGFR (Y1173 and Y845) and p-Met (Tyr1234/1235) in Huh-7 cells. Conversely, LNA-antimiR-214 repressed the expression of these genes. In conclusion, miR-214 appears to participate in the development of hepatic fibrosis by modulating the EGFR and TGF-β signaling pathways. LNA-antimiR-214 is a potential therapy for the prevention of hepatic fibrosis.
Collapse
Affiliation(s)
- Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan.,Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | - Jean S Campbell
- Department of Pathology, University of Washington School of Medicine, Seattle, Washington, USA
| | - Kai Takegoshi
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Yoshio Sakai
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Riuta Takabatake
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Mikiko Nakamura
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Takuji Tanaka
- The Tohkai Cytopathology Institute: Cancer Research and Prevention, Gifu, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| |
Collapse
|
31
|
Shirasaki T, Honda M, Shimakami T, Murai K, Shiomoto T, Okada H, Takabatake R, Tokumaru A, Sakai Y, Yamashita T, Lemon SM, Murakami S, Kaneko S. Impaired interferon signaling in chronic hepatitis C patients with advanced fibrosis via the transforming growth factor beta signaling pathway. Hepatology 2014; 60:1519-30. [PMID: 24962339 DOI: 10.1002/hep.27277] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [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: 02/01/2014] [Accepted: 06/20/2014] [Indexed: 12/14/2022]
Abstract
UNLABELLED Malnutrition in the advanced fibrosis stage of chronic hepatitis C (CH-C) impairs interferon (IFN) signaling by inhibiting mammalian target of rapamycin complex 1 (mTORC1) signaling. However, the effect of profibrotic signaling on IFN signaling is not known. Here, the effect of transforming growth factor (TGF)-β signaling on IFN signaling and hepatitis C virus (HCV) replication was examined in Huh-7.5 cells by evaluating the expression of forkhead box O3A (Foxo3a), suppressor of cytokine signaling 3 (Socs3), c-Jun, activating transcription factor 2, ras homolog enriched in brain, and mTORC1. The findings were confirmed in liver tissue samples obtained from 91 patients who received pegylated-IFN and ribavirin combination therapy. TGF-β signaling was significantly up-regulated in the advanced fibrosis stage of CH-C. A significant positive correlation was observed between the expression of TGF-β2 and mothers against decapentaplegic homolog 2 (Smad2), Smad2 and Foxo3a, and Foxo3a and Socs3 in the liver of CH-C patients. In Huh-7.5 cells, TGF-β1 activated the Foxo3a promoter through an AP1 binding site; the transcription factor c-Jun was involved in this activation. Foxo3a activated the Socs3 promoter and increased HCV replication. TGF-β1 also inhibited mTORC1 and IFN signaling. Interestingly, c-Jun and TGF-β signaling was up-regulated in treatment-resistant IL28B minor genotype patients (TG/GG at rs8099917), especially in the early fibrosis stage. Branched chain amino acids or a TGF-β receptor inhibitor canceled these effects and showed an additive effect on the anti-HCV activity of direct-acting antiviral drugs (DAAs). CONCLUSION Blocking TGF-β signaling could potentiate the antiviral efficacy of IFN- and/ or DAA-based treatment regimens and would be useful for the treatment of difficult-to-cure CH-C patients.
Collapse
Affiliation(s)
- Takayoshi Shirasaki
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan; Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Honda M, Shirasaki T, Shimakami T, Sakai A, Horii R, Arai K, Yamashita T, Sakai Y, Yamashita T, Okada H, Murai K, Nakamura M, Mizukoshi E, Kaneko S. Hepatic interferon-stimulated genes are differentially regulated in the liver of chronic hepatitis C patients with different interleukin-28B genotypes. Hepatology 2014; 59:828-38. [PMID: 24311440 DOI: 10.1002/hep.26788] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [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: 05/31/2013] [Accepted: 09/30/2013] [Indexed: 12/14/2022]
Abstract
UNLABELLED Pretreatment up-regulation of hepatic interferon (IFN)-stimulated genes (ISGs) has a stronger association with the treatment-resistant interleukin (IL)28B minor genotype (MI; TG/GG at rs8099917) than with the treatment-sensitive IL28B major genotype (MA; TT at rs8099917). We compared the expression of ISGs in the liver and blood of 146 patients with chronic hepatitis C who received pegylated IFN and ribavirin combination therapy. Gene expression profiles in the liver and blood of 85 patients were analyzed using an Affymetrix GeneChip (Affymetrix, Santa Clara, CA). ISG expression was correlated between the liver and blood of the MA patients, whereas no correlation was observed in the MI patients. This loss of correlation was the result of the impaired infiltration of immune cells into the liver lobules of MI patients, as demonstrated by regional gene expression analysis in liver lobules and portal areas using laser capture microdissection and immunohistochemical staining. Despite having lower levels of immune cells, hepatic ISGs were up-regulated in the liver of MI patients and they were found to be regulated by multiple factors, namely, IL28A/B, IFN-λ4, and wingless-related MMTV integration site 5A (WNT5A). Interestingly, WNT5A induced the expression of ISGs, but also increased hepatitis C virus replication by inducing the expression of the stress granule protein, GTPase-activating protein (SH3 domain)-binding protein 1 (G3BP1), in the Huh-7 cell line. In the liver, the expression of WNT5A and its receptor, frizzled family receptor 5, was significantly correlated with G3BP1. CONCLUSIONS Immune cells were lost and induced the expression of other inflammatory mediators, such as WNT5A, in the liver of IL28B minor genotype patients. This might be related to the high level of hepatic ISG expression in these patients and the treatment-resistant phenotype of the IL28B minor genotype.
Collapse
Affiliation(s)
- Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan; Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Kanazawa, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Takayama H, Misu H, Iwama H, Chikamoto K, Saito Y, Murao K, Teraguchi A, Lan F, Kikuchi A, Saito R, Tajima N, Shirasaki T, Matsugo S, Miyamoto KI, Kaneko S, Takamura T. Metformin suppresses expression of the selenoprotein P gene via an AMP-activated kinase (AMPK)/FoxO3a pathway in H4IIEC3 hepatocytes. J Biol Chem 2013; 289:335-45. [PMID: 24257750 DOI: 10.1074/jbc.m113.479386] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [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: 02/05/2023] Open
Abstract
Selenoprotein P (SeP; encoded by SEPP1 in humans) is a liver-derived secretory protein that induces insulin resistance in type 2 diabetes. Suppression of SeP might provide a novel therapeutic approach to treating type 2 diabetes, but few drugs that inhibit SEPP1 expression in hepatocytes have been identified to date. The present findings demonstrate that metformin suppresses SEPP1 expression by activating AMP-activated kinase (AMPK) and subsequently inactivating FoxO3a in H4IIEC3 hepatocytes. Treatment with metformin reduced SEPP1 promoter activity in a concentration- and time-dependent manner; this effect was cancelled by co-administration of an AMPK inhibitor. Metformin also suppressed Sepp1 gene expression in the liver of mice. Computational analysis of transcription factor binding sites conserved among the species resulted in identification of the FoxO-binding site in the metformin-response element of the SEPP1 promoter. A luciferase reporter assay showed that metformin suppresses Forkhead-response element activity, and a ChIP assay revealed that metformin decreases binding of FoxO3a, a direct target of AMPK, to the SEPP1 promoter. Transfection with siRNAs for Foxo3a, but not for Foxo1, cancelled metformin-induced luciferase activity suppression of the metformin-response element of the SEPP1 promoter. The overexpression of FoxO3a stimulated SEPP1 promoter activity and rescued the suppressive effect of metformin. Metformin did not affect FoxO3a expression, but it increased its phosphorylation and decreased its nuclear localization. These data provide a novel mechanism of action for metformin involving improvement of systemic insulin sensitivity through the regulation of SeP production and suggest an additional approach to the development of anti-diabetic drugs.
Collapse
Affiliation(s)
- Hiroaki Takayama
- From the Department of Disease Control and Homeostasis, Kanazawa University Graduate School of Medical Sciences, 13-1 Takara-machi, Kanazawa, Ishikawa 920-8641, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Hamasaki R, Shirasaki T, Soeda F, Takahama K. Tipepidine activates VTA dopamine neuron via inhibiting dopamine D₂ receptor-mediated inward rectifying K⁺ current. Neuroscience 2013; 252:24-34. [PMID: 23896570 DOI: 10.1016/j.neuroscience.2013.07.044] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 06/28/2013] [Accepted: 07/18/2013] [Indexed: 11/19/2022]
Abstract
We previously reported that the novel antidepressant-like effect of tipepidine may be produced at least partly through the activation of mesolimbic dopamine (DA) neurons via inhibiting G protein-coupled inwardly rectifying potassium (GIRK) channels. In this study, we investigated the action of tipepidine on DA D2 receptor-mediated GIRK currents (IDA(GIRK)) and membrane excitability in DA neurons using the voltage clamp and current clamp modes of the patch-clamp techniques, respectively. DA neurons were acutely dissociated from the ventral tegmental area (VTA) in rats and identified by the presence of the hyperpolarization-activated currents. Tipepidine reversibly inhibited IDA(GIRK) with IC50 7.0 μM and also abolished IDA(GIRK) irreversibly activated in the presence of intracellular GTPγS. Then tipepidine depolarized membrane potential and generated action potentials in the neurons current-clamped. Furthermore, the drug at 40 mg/kg, i.p. increased the number of cells immunopositive both for c-Fos and tyrosine hydroxylase (TH) in the VTA. These results suggest that tipepidine may activate DA neurons in VTA through the inhibition of GIRK channel-activated currents.
Collapse
Affiliation(s)
- R Hamasaki
- Department of Environmental and Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
| | | | | | | |
Collapse
|
35
|
Mizuno H, Honda M, Shirasaki T, Yamashita T, Yamashita T, Mizukoshi E, Kaneko S. Heterogeneous nuclear ribonucleoprotein A2/B1 in association with hTERT is a potential biomarker for hepatocellular carcinoma. Liver Int 2012; 32:1146-55. [PMID: 22372738 DOI: 10.1111/j.1478-3231.2012.02778.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [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: 08/31/2011] [Accepted: 02/02/2012] [Indexed: 01/06/2023]
Abstract
BACKGROUND The heterogeneous nature of hepatocellular carcinoma (HCC) and the lack of appropriate biomarkers have hampered patient prognosis and treatment stratification. To identify a new prognostic biomarker that is related to human telomerase reverse transcriptase (hTERT) in HCC, we employed a unique proteomics approach using liquid chromatograph-mass spectrometry/mass spectrometry (LC-MS/MS) after gel filtration purification of liver tissue. METHODS Protein lysates from HCC and cirrhotic liver tissue were subjected to gel filtration using high performance liquid chromatography. The telomerase complex was identified at a molecular mass of 350 kDa in parallel with telomerase activity. These fractionated lysates of 350 kDa were analyzed by LC-MS/MS. The relation of the identified marker and prognosis was statistically examined in surgically resected HCC patients. RESULTS We identified 24 differentially expressed proteins in HCC. One of these proteins, heterogeneous nuclear ribonucleoprotein A2/B1 (hnRNP A2/B1), was further analyzed by immunoprecipitation assay using tissue and cell line samples and found to interact with hTERT. Moreover small interfering RNA against hnRNP A2/B1 suppressed telomerase activity, and immunohistochemical examination showed that the enhanced nuclear and cytoplasmic hnRNP A2/B1 expression in HCC was significantly associated with histological grade of tumor differentiation and microvascular invasion of HCC. Furthermore, survival analysis of 74 HCC patients who received curative surgical treatment showed that hnRNP A2/B1 expression is an independent prognostic factor for patient survival. CONCLUSIONS Heterogeneous nuclear ribonucleoprotein A2/B1, an hTERT-associated protein, is a potential prognostic biomarker for HCC patients and might be a therapeutic target of HCC.
Collapse
Affiliation(s)
- Hideki Mizuno
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | | | | | | | | | | | | |
Collapse
|
36
|
Okada H, Honda M, Campbell JS, Sakai Y, Yamashita T, Takebuchi Y, Hada K, Shirasaki T, Takabatake R, Nakamura M, Sunagozaka H, Tanaka T, Fausto N, Kaneko S. Acyclic retinoid targets platelet-derived growth factor signaling in the prevention of hepatic fibrosis and hepatocellular carcinoma development. Cancer Res 2012; 72:4459-71. [PMID: 22651928 DOI: 10.1158/0008-5472.can-12-0028] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Hepatocellular carcinoma (HCC) often develops in association with liver cirrhosis, and its high recurrence rate leads to poor patient prognosis. Although recent evidence suggests that peretinoin, a member of the acyclic retinoid family, may be an effective chemopreventive drug for HCC, published data about its effects on hepatic mesenchymal cells, such as stellate cells and endothelial cells, remain limited. Using a mouse model in which platelet-derived growth factor (PDGF)-C is overexpressed (Pdgf-c Tg), resulting in hepatic fibrosis, steatosis, and eventually, HCC development, we show that peretinoin significantly represses the development of hepatic fibrosis and tumors. Peretinoin inhibited the signaling pathways of fibrogenesis, angiogenesis, and Wnt/β-catenin in Pdgf-c transgenic mice. In vitro, peretinoin repressed the expression of PDGF receptors α/β in primary mouse hepatic stellate cells (HSC), hepatoma cells, fibroblasts, and endothelial cells. Peretinoin also inhibited PDGF-C-activated transformation of HSCs into myofibroblasts. Together, our findings show that PDGF signaling is a target of peretinoin in preventing the development of hepatic fibrosis and HCC.
Collapse
Affiliation(s)
- Hikari Okada
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, Takara-Machi 13-1, Kanazawa 920-8641, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Honda M, Takehana K, Sakai A, Tagata Y, Shirasaki T, Nishitani S, Muramatsu T, Yamashita T, Nakamoto Y, Mizukoshi E, Sakai Y, Yamashita T, Nakamura M, Shimakami T, Yi M, Lemon SM, Suzuki T, Wakita T, Kaneko S. Malnutrition impairs interferon signaling through mTOR and FoxO pathways in patients with chronic hepatitis C. Gastroenterology 2011; 141:128-40, 140.e1-2. [PMID: 21458454 DOI: 10.1053/j.gastro.2011.03.051] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [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: 10/19/2010] [Revised: 02/21/2011] [Accepted: 03/18/2011] [Indexed: 01/22/2023]
Abstract
BACKGROUND & AIMS Patients with advanced chronic hepatitis C (CH-C) often are malnourished, but the effects of malnutrition on interferon (IFN) signaling and response to treatment have not been determined. We assessed the importance of the nutritional state of the liver on IFN signaling and treatment response. METHODS We studied data from 168 patients with CH-C who were treated with the combination of pegylated-IFN and ribavirin. Plasma concentrations of amino acids were measured by mass spectrometry. Liver gene expression profiles were obtained from 91 patients. Huh-7 cells were used to evaluate the IFN signaling pathway, mammalian target of rapamycin complex 1 (mTORC1), and forkhead box O (FoxO). Antiviral signaling induced by branched-chain amino acids (BCAAs) was determined using the in vitro hepatitis C virus replication system. RESULTS Multivariate logistic regression analysis showed that Fischer's ratio was associated significantly with nonresponders, independent of interleukin-28B polymorphisms or the histologic stage of the liver. Fischer's ratio was correlated inversely with the expression of BCAA transaminase 1, and was affected by hepatic mTORC1 signaling. IFN stimulation was impaired substantially in Huh-7 cells grown in medium that was low in amino acid concentration, through repressed mTORC1 signaling, and increased Socs3 expression, which was regulated by Foxo3a. BCAA could restore impaired IFN signaling and inhibit hepatitis C virus replication under conditions of malnutrition. CONCLUSIONS Malnutrition impaired IFN signaling by inhibiting mTORC1 and activating Socs3 signaling through Foxo3a. Increasing BCAAs to up-regulate IFN signaling might be used as a new therapeutic approach for patients with advanced CH-C.
Collapse
Affiliation(s)
- Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Honda M, Nakamura M, Tateno M, Sakai A, Shimakami T, Shirasaki T, Yamashita T, Arai K, Yamashita T, Sakai Y, Kaneko S. Differential interferon signaling in liver lobule and portal area cells under treatment for chronic hepatitis C. J Hepatol 2010; 53:817-26. [PMID: 20739080 DOI: 10.1016/j.jhep.2010.04.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [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: 10/12/2009] [Revised: 04/29/2010] [Accepted: 04/30/2010] [Indexed: 01/11/2023]
Abstract
BACKGROUND & AIMS The mechanisms of treatment resistance to interferon (IFN) and ribavirin (Rib) combination therapy for hepatitis C virus (HCV) infection are not known. This study aims to gain insight into these mechanisms by exploring hepatic gene expression before and during treatment. METHODS Liver biopsy was performed in 50 patients before therapy and repeated in 30 of them 1week after initiating combination therapy. The cells in liver lobules (CLL) and the cells in portal areas (CPA) were obtained from 12 patients using laser capture microdissection (LCM). RESULTS Forty-three patients were infected with genotype 1 HCV, 20 of who were viral responders (genotype 1-Rsp) with treatment outcome of SVR or TR, while 23 were non-responders (genotype 1-nonRsp) with NR. Only seven patients were infected with genotype 2. Before treatment, the expression of IFN and Rib-stimulated genes (IRSGs), apoptosis-associated genes, and immune reaction gene pathways was greater in genotype 1-nonRsp than in Rsp. During treatment, IRSGs were induced in genotype 1-Rsp, but not in nonRsp. IRSG induction was irrelevant in genotype 2-Rsp and was mainly impaired in CLL but not in CPA. Pathway analysis revealed that many immune regulatory pathways were induced in CLL from genotype 1-Rsp, while growth factors related to angiogenesis and fibrogenesis were more induced in CPA from genotype 1-nonRsp. CONCLUSIONS Impaired IRSGs induction in CLL reduces the sensitivity to treatment for genotype 1 HCV infection. CLL and CPA in the liver might be differentially involved in treatment resistance. These findings could be useful for the improvement of therapy for HCV infection.
Collapse
Affiliation(s)
- Masao Honda
- Department of Gastroenterology, Kanazawa University, Graduate School of Medicine, Kanazawa, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Honda M, Sakai A, Yamashita T, Nakamoto Y, Mizukoshi E, Sakai Y, Yamashita T, Nakamura M, Shirasaki T, Horimoto K, Tanaka Y, Tokunaga K, Mizokami M, Kaneko S. Hepatic ISG expression is associated with genetic variation in interleukin 28B and the outcome of IFN therapy for chronic hepatitis C. Gastroenterology 2010; 139:499-509. [PMID: 20434452 DOI: 10.1053/j.gastro.2010.04.049] [Citation(s) in RCA: 339] [Impact Index Per Article: 24.2] [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: 10/09/2009] [Revised: 04/05/2010] [Accepted: 04/14/2010] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Multiple viral and host factors are related to the treatment response to pegylated-interferon and ribavirin combination therapy; however, the clinical relevance and relationship of these factors have not yet been fully evaluated. METHODS We studied 168 patients with chronic hepatitis C who received pegylated-interferon and ribavirin combination therapy. Gene expression profiles in the livers of 91 patients were analyzed using an Affymetrix genechip (Affymetrix, Santa Clara, CA). The expression of interferon-stimulated genes (ISGs) was evaluated in all samples by real-time polymerase chain reaction. Genetic variation in interleukin 28B (IL28B; rs8099917) was determined in 91 patients. RESULTS Gene expression profiling of the liver differentiated patients into 2 groups: patients with up-regulated ISGs and patients with down-regulated ISGs. A high proportion of patients with no response to treatment was found in the up-regulated ISGs group (P=.002). Multivariate logistic regression analysis showed that ISGs (<3.5) (odds ratio [OR], 16.2; P<.001), fibrosis stage (F1-F2) (OR, 4.18; P=.003), and ISDR mutation (>or=2) (OR, 5.09; P=.003) were strongly associated with the viral response. The IL28B polymorphism of 91 patients showed that 66% were major homozygotes (TT), 30% were heterozygotes (TG), and 4% were minor homozygotes (GG). Interestingly, hepatic ISGs were associated with the IL28B polymorphism (OR, 18.1; P<.001), and its expression was significantly higher in patients with the minor genotype (TG or GG) than in those with the major genotype (TT). CONCLUSIONS The expression of hepatic ISGs is strongly associated with treatment response and genetic variation of IL28B. The differential role of host and viral factors as predicting factors may also be present.
Collapse
Affiliation(s)
- Masao Honda
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Soeda F, Tanaka A, Shirasaki T, Takahama K. An enriched environment mitigates the brain-disruptive effects of prenatal diethylstilbestrol exposure in mice. Neuroscience 2010; 169:223-8. [DOI: 10.1016/j.neuroscience.2010.04.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2010] [Revised: 04/09/2010] [Accepted: 04/21/2010] [Indexed: 11/27/2022]
|
41
|
Shirasaki T, Honda M, Mizuno H, Shimakami T, Okada H, Sakai Y, Murakami S, Wakita T, Kaneko S. La protein required for internal ribosome entry site-directed translation is a potential therapeutic target for hepatitis C virus replication. J Infect Dis 2010; 202:75-85. [PMID: 20497049 DOI: 10.1086/653081] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Translation of the hepatitis C virus (HCV) is mediated by an internal ribosome entry site (IRES). Here, we analyzed the functional relevance of La protein for replication of HCV using an infectious HCV clone, JFH-1. METHODS A single-nucleotide mutation from A to U was introduced at the 338th nucleotide in the stem-loop domain IV structure of HCV IRES, which stabilized stem-loop IV and abolished translation and replication of JFH-1 almost completely. RESULTS During JFH-1 replication, translation initiation factors required for HCV IRES activity, including La protein, polypyrimidine tract binding protein (PTB), PSMA7, and PCBP2, were significantly induced in Huh-7.5 cells. Interestingly, JFH-1 infection increased telomerase activity and induced the expression of human telomerase RNA (hTR) in Huh-7.5 cells. In 37 tissue specimens from patients with chronic hepatitis C, La protein significantly correlated with the representative essential telomerase components hTR, p23, and HSP90 (P<.001). Recombinant adenovirus that expressed short-hairpin RNA against La protein successfully suppressed the levels of La protein and core protein of JFH-1 to 30% of that in the control cells. CONCLUSIONS HCV infection might be strongly related to telomerase activity in the liver through La protein induction. Inhibition of La protein substantially repressed JFH-1 replication; therefore, La protein is a potential therapeutic target for HCV.
Collapse
Affiliation(s)
- Takayoshi Shirasaki
- Department of Gastroenterology, Division of Health Medicine, Graduate School of Medicine, Kanazawa University, Kanazawa 920-8641, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Takahama K, Shirasaki T, Soeda F. Central mechanisms III: neuronal mechanisms of action of centrally acting antitussives using electrophysiological and neurochemical study approaches. Handb Exp Pharmacol 2009:219-240. [PMID: 18825343 DOI: 10.1007/978-3-540-79842-2_11] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- K Takahama
- Department of Environmental and Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan.
| | | | | |
Collapse
|
43
|
Kaitsuka T, Fukunaga K, Soeda F, Shirasaki T, Miyamoto E, Takahama K. Changes in Ca(2+)/calmodulin-dependent protein kinase II activity and its relation to performance in passive avoidance response and long-term potentiation formation in mice prenatally exposed to diethylstilbestrol. Neuroscience 2006; 144:1415-24. [PMID: 17184923 DOI: 10.1016/j.neuroscience.2006.10.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2005] [Revised: 10/09/2006] [Accepted: 10/14/2006] [Indexed: 10/23/2022]
Abstract
We investigated the effects of prenatal exposure to diethylstilbestrol (DES), an endocrine disrupter on learning behavior and synaptic functions. Specifically, we determined the activity of Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) and related kinases that play an essential role in long-term potentiation (LTP) in the hippocampus in mice that were prenatally exposed to DES. Treatment with DES resulted in increased CaMKII autophosphorylation and Ca(2+)-independent activity in the hippocampus and cortex of male mice. Impaired passive avoidance correlated with this increased CaMKII autophosphorylation, as did the enhanced early phase of LTP (E-LTP) in hippocampus. These data suggest that prenatal exposure to DES induces deficits in passive avoidance responses as a result of increased CaMKII activity and hippocampal LTP.
Collapse
Affiliation(s)
- T Kaitsuka
- Department of Environmental and Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
| | | | | | | | | | | |
Collapse
|
44
|
Abstract
Spontaneous transient outward currents have been found in peripheral neurons and smooth muscle cells, but rarely in central neurons. Using a nystatin-perforated patch clamp technique, we succeeded in recording spontaneous transient outward currents in mouse dentate gyrus granule cells. Nociceptin/orphanin FQ increased the amplitude and frequency of transient outward currents. We consider modulation of spontaneous transient outward currents to be a new means to regulate cell activity in central neurons, and studied their characteristics and mechanism of augmentation. The whole-cell current-voltage relationship showed outward rectification and the reversal potential was close to the equilibrium potential for K+. The frequency of spontaneous transient outward currents increased at depolarized potentials. Tetraethylammonium, iberiotoxin and a Ca2+ chelator BAPTA-AM inhibited spontaneous transient outward currents. These results suggest the involvement of large-conductance Ca2+-activated K+ channels. Single-channel recordings in the inside-out configuration revealed Ca2+-activated K+ channels with a conductance ranging from 82 to 352 pS. The augmenting effect of nociceptin/orphanin FQ was cancelled by [Phe1psi(CH2-NH)Gly2]Nociceptin(1-13)NH2. Cd2+ did not affect the transient outward currents or augmentation by nociceptin/orphanin FQ. Whereas nociceptin/orphanin FQ, theophylline and cyclic ADP ribose induced transient outward currents with short duration observed under control conditions, inositol 1,4,5-trisphosphate induced transient outward currents with long duration, in addition to those with short duration. Ryanodine inhibited nociceptin/orphanin FQ from augmenting spontaneous transient outward currents. Our data suggest that Ca2+ sparks transiently activate large-conductance Ca2+-activated K+ channels to induce transient outward currents. Nociceptin/orphanin FQ probably sensitizes ryanodine receptors and increases transient outward currents to reduce cell excitability.
Collapse
Affiliation(s)
- T Shirasaki
- Department of Physiology, Kansai Medical University, Moriguchi, 570-8506, Osaka, Japan
| | | | | | | |
Collapse
|
45
|
Takahama K, Shirasaki T. [Endocrine disruptors and brain estrogen receptors: the current state of behavioral, neurochemical, and molecular biological studies]. Nihon Shinkei Seishin Yakurigaku Zasshi 2001; 21:103-11. [PMID: 11769567] [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] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Based on epidemiological studies and animal studies, endocrine disrupters have received considerable attention as exerting disrupting actions on the developing brain. On the other hand, there has been increasing evidence that sex hormones and thyroid hormones play important roles in the development of the brain, including sexual dimorphism during the perinatal stage. Thus it seems probable that perinatal exposure to endocrine disruptors, which may have an affect on biosynthesis, transport, action, and metabolism of the hormones, may disrupt brain development enough to impair the brain functions. In this review, we introduce the current state of studies on brain disrupting actions of endocrine disruptors, addressing their actions on the estrogen system, including our own findings. The outline of the findings thus far reported are as follows: (1) Perinatal exposure to relatively low concentrations of endocrine disrupters may cause an impairment of higher brain functions, such as sexual behavior and learning behavior, (2) There seems to be sexual difference about the impairment described above, (3) Endocrine disruptors may cause an increase in volume of some nuclei, such as the sexual dimorphic nucleus of the preoptic area and locus coeruleus of the brain, (4) The disruptor might change the level of some substances that are considered to be involved in synaptic functions. Much remained to be studied about how does each finding reported link the others, and about detailed mechanisms of the disrupting actions of endocrine disruptors on the developing brain.
Collapse
Affiliation(s)
- K Takahama
- Department of Hygienic Chemistry, Faculty of Pharmaceutical Sciences, Kumamoto University, 5-1, Oe-honmachi, Kumamoto, 862-0973 Japan
| | | |
Collapse
|
46
|
Suzuki S, Osanai M, Murase M, Suzuki N, Ito K, Shirasaki T, Narita K, Ohnuma K, Kuba K, Kijima H. Ca2+ dynamics at the frog motor nerve terminal. Pflugers Arch 2000; 440:351-65. [PMID: 10954322 DOI: 10.1007/s004240000278] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Rises in free [Ca2+]i in response to various tetanic stimuli (Ca2+ transient) in frog motor nerve terminals were measured by recording fluorescence changes of Ca2+ indicators and analyzed in relation to short-term synaptic plasticity. Ca2+ transients reached a plateau after 10-20 impulses at 100 Hz and decayed in a three-exponential manner, in which the fast component was predominant. The plateau and fast component of the Ca2+ transient were elevated infralinearly with an increase in tetanus frequency. Computer simulation showed that the Ca2+ transients estimated from fluorescence changes faithfully reflect the true changes in [Ca2+]i except for the initial 20 ms. A slow Ca2+ chelator, EGTA, loaded into the nerve terminal, decreased the magnitude of both the fast and slow components of facilitation of transmitter release and the time constant of the former. A fast Ca2+ chelator, BAPTA, decreased the magnitude of fast facilitation but slightly increased its time constant. These results suggest that Ca2+ transients in the frog motor nerve terminals are primarily caused by Ca2+ entry and are dissipated by three components, in which the rate of the fast component is equivalent to that of free Ca2+ diffusion. The residual Ca2+ in the nerve terminals after stimulation accounts for the fast component of facilitation.
Collapse
Affiliation(s)
- S Suzuki
- Department of Physics, School of Science, Nagoya University, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Liu C, Shirasaki T, Tanaka S, Kuba K. Activity-dependent enhancement of miniature excitatory postsynaptic current amplitude and its modulation by protein kinase C in cultured rat sympathetic neurons. Neurosci Lett 2000; 280:57-60. [PMID: 10696811 DOI: 10.1016/s0304-3940(99)00992-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A high K+ solution increased the frequency of miniature excitatory postsynaptic currents (MEPSCs) and intracellular Ca2+ concentration ([Ca2+]i) in cultured rat sympathetic neurons. Repetition or continuation of high K+ treatment increased MEPSC amplitude, acetylcholine-induced currents and the averaged rise in [Ca2+]i per single MEPSC. The enhancement of MEPSCs lasted over 30 min and was inhibited by intracellular BAPTA and phorbol ester, but not by atropine. The results suggest that repeated Ca2+ entry through the channel pore of nicotinic acetylcholine receptor enhances the efficacy of its opening and the activation of protein kinase C inhibits the enhancement.
Collapse
Affiliation(s)
- C Liu
- Department of Physiology, Saga Medical School, Japan
| | | | | | | |
Collapse
|
48
|
Narita K, Akita T, Osanai M, Shirasaki T, Kijima H, Kuba K. A Ca2+-induced Ca2+ release mechanism involved in asynchronous exocytosis at frog motor nerve terminals. J Gen Physiol 1998; 112:593-609. [PMID: 9806968 PMCID: PMC2229444 DOI: 10.1085/jgp.112.5.593] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
The extent to which Ca2+-induced Ca2+ release (CICR) affects transmitter release is unknown. Continuous nerve stimulation (20-50 Hz) caused slow transient increases in miniature end-plate potential (MEPP) frequency (MEPP-hump) and intracellular free Ca2+ ([Ca2+]i) in presynaptic terminals (Ca2+-hump) in frog skeletal muscles over a period of minutes in a low Ca2+, high Mg2+ solution. Mn2+ quenched Indo-1 and Fura-2 fluorescence, thus indicating that stimulation was accompanied by opening of voltage-dependent Ca2+ channels. MEPP-hump depended on extracellular Ca2+ (0.05-0.2 mM) and stimulation frequency. Both the Ca2+- and MEPP-humps were blocked by 8-(N, N-diethylamino)octyl3,4,5-trimethoxybenzoate hydrochloride (TMB-8), ryanodine, and thapsigargin, but enhanced by CN-. Thus, Ca2+-hump is generated by the activation of CICR via ryanodine receptors by Ca2+ entry, producing MEPP-hump. A short interruption of tetanus (<1 min) during MEPP-hump quickly reduced MEPP frequency to a level attained under the effect of TMB-8 or thapsigargin, while resuming tetanus swiftly raised MEPP frequency to the previous or higher level. Thus, the steady/equilibrium condition balancing CICR and Ca2+ clearance occurs in nerve terminals with slow changes toward a greater activation of CICR (priming) during the rising phase of MEPP-hump and toward a smaller activation during the decay phase. A short pause applied after the end of MEPP- or Ca2+-hump affected little MEPP frequency or [Ca2+]i, but caused a quick increase (faster than MEPP- or Ca2+-hump) after the pause, whose magnitude increased with an increase in pause duration (<1 min), suggesting that Ca2+ entry-dependent inactivation, but not depriming process, explains the decay of the humps. The depriming process was seen by giving a much longer pause (>1 min). Thus, ryanodine receptors in frog motor nerve terminals are endowed with Ca2+ entry-dependent slow priming and fast inactivation mechanisms, as well as Ca2+ entry-dependent activation, and involved in asynchronous exocytosis. Physiological significance of CICR in presynaptic terminals was discussed.
Collapse
Affiliation(s)
- K Narita
- Department of Physiology, Kawasaki Medical School, Kurashiki 701-0192, Japan
| | | | | | | | | | | |
Collapse
|
49
|
Tokimasa T, Shirasaki T, Kuba K. Evidence for the calcium-dependent potentiation of M-current obtained by the ratiometric measurement of the fura-2 fluorescence in bullfrog sympathetic neurons. Neurosci Lett 1997; 236:123-6. [PMID: 9406752 DOI: 10.1016/s0304-3940(97)00791-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Intracellular Ca2+ concentration ([Ca]i) was measured following the activation of an inward Ca2+ current and subsequent potentiation of an M-type K+ current (IM) in bullfrog sympathetic neurons. Fura-2 was used as an indicator for [Ca]i. The fluorescence ratio at 340 and 380 nm (F340/F380) was elevated from 0.36 to 1.22 when IM was potentiated by 68% following the Ca2+ current. Based on the in vivo calibration curve obtained from cells permeabilized with digitonin (20 microM), the F340/F380 value of 1.22 was equivalent to a [Ca]i of 0.97 microM. We therefore propose that a rise in [Ca]i into the micromolar range can lead to the potentiation of IM in amphibian autonomic neurons.
Collapse
Affiliation(s)
- T Tokimasa
- Department of Physiology, Tokai University School of Medicine, Isehara, Japan.
| | | | | |
Collapse
|
50
|
Tokimasa T, Shirasaki T, Yoshida M, Ito M, Tanaka E, Mitsumoto T, Akasu T, Tanaka M, Higashi H, Nakano T. Calcium-dependent potentiation of M-current in bullfrog sympathetic neurons. Neurosci Lett 1996; 214:79-82. [PMID: 8878088 DOI: 10.1016/0304-3940(96)12890-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Whole-cell voltage-clamp recordings were made from cultured bullfrog sympathetic neurons to measure the steady-state activation curve of M-type potassium current. When measured with a calcium-deficient (10 nM) pipette solution M-conductance was 4.8 nS at -35 mV having the 50%-activation voltage at-20 mV. Respective values were 17.2 nS at -35 mV with the 50%-activation voltage at -42 mV when measured with a calcium-rich (1 microM) solution, indicating the hyperpolarizing displacement of the activation curve with high internal calcium. It is suggested that intracellular calcium ions can modulate kinetics of M-current which thereby regulate the number of M-channels being open at given membrane potentials.
Collapse
Affiliation(s)
- T Tokimasa
- Department of Physiology, Tokai University Medical School, Isehara, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|