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2020 Fiscal Year Research-status Report

Cytoglobin overexpression inhibits liver fibrosis and cancer development via anti-oxidant function

Research Project

Project/Area Number 19K08428
Research InstitutionOsaka City University

Principal Investigator

LE THITHANHTHUY  大阪市立大学, 大学院医学研究科, 特任講師 (10572175)

Project Period (FY) 2019-04-01 – 2022-03-31
KeywordsCytoglobin / Hepatic stellate cells / Anti-fibrosis / Liver cancer
Outline of Annual Research Achievements

We have examined therapeutic effects of 6-His tagged recombinant human Cytoglobin (rhCYGB) protein against mouse liver injuries, fibrosis and human HSC activation. In cultured HSCs, extracellular His-CYGB was endocytosed and accumulated in endosomes via clathrin-mediated pathway. His-CYGB significantly impeded ROS formation spontaneously or in the presence of ROS inducers in HSCs, thus leading to the attenuation of Col1a1 production and HSC activation. Intravenously injected His-CYGB markedly suppressed liver inflammation, fibrosis and oxidative cell damage in TAA- or DDC-administered mice. The injected His-CYGB predominantly localised to HSCs, suggesting specific targeting effects. His-CYGB exhibited no toxicity in humanised liver chimeric PXB mice.

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

RNA-Seq analysis of His-CYGB-treated HHSteC samples in comparison with controls revealed the down-regulation of the fibrosis-related genes. Besides that, we also found IFN-stimulated genes such as the genes encoding IFN-inducible proteins IFI27, IFI6, and IFI44L, ISG15, IRF7 and IRF9, and OAS2 were upregulated, suggesting the involvement of IFNb signaling during His-CYGB treatment. His-CYGB treated HHSteC increased the levels of P-TBK1, and secreted IFN-β protein. Simultaneous with IFN-β secretion, STAT1 phosphorylation was observed, secreted IFNb 8 h after His-CYGB challenge. In opposite, the JAK1-specific inhibitor momelotinib attenuated the reduction in COL1A1 production in both His-CYGB- and rhIFN-β treated HHSteCs.

Strategy for Future Research Activity

We have pointed that IFN- β is one of down-stream targets of Cygb in protecting liver injuries. Beside that, we overexpression of Cygb in human HSCs and cancer cells. Immunoprecipitation experiments using Pull-Down Poly-His Protein:Protein Interaction Kit, Sulfo-SBED Biotin Label Transfer Kit, and Dynabeads His-Tag Isolation and pulldown (Invitrogen) to triple confirm the binding targets. We have found some potential CYGB targets including Flotilin-1, Annexin A2, ATPb5. We are now explore the role of each target. For rhCYGB protein production and application: we will perform the shortening full-length of rhCYGB protein to be shorten peptides and explore the important portion of CYGB for its effect.

Causes of Carryover

We need to shorten full-length of rhCYGB protein and explore the CYGB targets. We need to: design primers; PCR amplification of DNA fragments; Double digestion vectors; Ligation reaction; Transformation into DH5α, propagation the plasmids; Verify sequencing; Choose the corrected vectors and transformation into Ecoli BL21-AI; Produce rhCYGB short-peptides; Purify the peptides; In vitro application. Silencing or overexpression of each potential CYGB targets: Flotilin-1, Annexin A2, ATPb5. Examine the interaction between these targets with rhCYGB in vitro and in vivo.

  • Research Products

    (9 results)

All 2021 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] 6His-tagged Recombinant Human Cytoglobin Deactivates Hepatic Stellate Cells and Inhibits Liver Fibrosis by Scavenging Reactive Oxygen Species2021

    • Author(s)
      Ninh Quoc Dat, Le Thi Thanh Thuy, Vu Ngoc Hieu, Fuminori Tokunaga, Massimo Pinzani, and Norifumi Kawada
    • Journal Title

      Hepatology

      Volume: 0-0 Pages: 0-0

    • DOI

      10.1002/hep.31752

    • Peer Reviewed / Open Access
  • [Journal Article] Early Change in the Plasma Levels of Circulating Soluble Immune Checkpoint Proteins in Patients with Unresectable Hepatocellular Carcinoma Treated by Lenvatinib or Transcatheter Arterial Chemoembolization2020

    • Author(s)
      2.Odagiri N, Hai H, Thuy LTT, Dong MP, Suoh M, Kotani K, Hagihara A, Uchida-Kobayashi S, Tamori A, Enomoto M, Kawada N
    • Journal Title

      Cancers (Basel)

      Volume: 12 Pages: 2045

    • DOI

      10.3390/cancers12082045

    • Peer Reviewed / Open Access
  • [Journal Article] Hepatocellular carcinoma incidence with tenofovir versus entecavir in chronic hepatitis B: a systematic review and meta-analysis.2020

    • Author(s)
      3.Cheng-Hao Tseng, Yao-Chun Hsu, Tzu-Haw Chen, Fanpu Ji, I-Sung Chen, Ying-Nan Tsai, Hoang Hai, Le Thi Thanh Thuy, Tetsuya Hosaka, Hitomi Sezaki, John A Borghi, Ramsey Cheung, Masaru Enomoto, Mindie H Nguyen
    • Journal Title

      Lancet Gastroenterol Hepatol

      Volume: 5 Pages: 1039-1052

    • DOI

      10.1016/S2468-1253(20)30249-1

    • Peer Reviewed / Open Access
  • [Presentation] Hepatocellular carcinoma incidence with tenofovir vs entecavir in chronic hepatitis b: a systematic review and meta-analysis2020

    • Author(s)
      Tseng, CH; Hsu, YC; Chen, TH; Ji, FP; Chen, IS; Tsai, YN; Hai, H; Le Thuy, TT; Hosaka, T; Sezaki, H; Borghi, JA; Cheung, R; Enomoto, M; Nguyen, MH.
    • Organizer
      Annual Meeting of American Association for the Study of Liver Diseases (AASLD)
    • Int'l Joint Research
  • [Presentation] Early change in the plasma levels of circulating soluble immune checkpoint proteins in patients with unresectable hepatocellular carcinoma treated by lenvatinib or transcatheter arterial chemoembolization.2020

    • Author(s)
      Odagiri N, Enomoto M, Hai H, Le Thuy TT, Dong MP, Suoh M, Kotani K, Hagihara A, Uchida S, Tamori A, Kawada N.
    • Organizer
      Annual Meeting of American Association for the Study of Liver Diseases (AASLD)
    • Int'l Joint Research
  • [Presentation] Recombinant human Cytoglobin scavenging ROS and inducing Interferon-Beta mediated hepatic stellate cells activation and liver fibrosis2020

    • Author(s)
      Vu Ngoc Hieu, Ninh Quoc Dat, Le Thi Thanh Thuy, Hoang Hai, Dinh Viet Hoang, Katsutoshi Yoishizato and Norifumi Kawada
    • Organizer
      56th Annual Meeting of Japanese Society of Hepatology
  • [Presentation] Recombinant human Cytoglobin Deactivates Hepatic Stellate Cells and Prevents Fibrosis Aggravation by Scavenging ROS and Inducing Interferon-Beta2020

    • Author(s)
      1.Vu Ngoc Hieu, Ninh Quoc Dat, Le Thi Thanh Thuy, Hoang Hai, Dinh Viet Hoang, Katsutoshi Yoishizato and Norifumi Kawada.
    • Organizer
      Symposium oral presentation at the 107th General Meeting of the Japanese Society of Gastroenterology
  • [Presentation] Cytoglobin inhibits pancreatic cancer growth in vitro and in vivo2020

    • Author(s)
      2.Dinh Viet Hoang, Le Thi Thanh Thuy, Hoang Hai, Vu Ngoc Hieu, Ninh Quoc Dat, Truong Huu Hoang, Dong Minh Phuong, Ngo Vinh Hanh, Yoshihiro Ikura, Kenjiro Kimura, and Norifumi Kawada
    • Organizer
      107th General Meeting of the Japanese Society of Gastroenterology
  • [Patent(Industrial Property Rights)] 肝星細胞の活性化並びに肝炎;肝線維化を抑制するサイトグロビン関連ペプチド2019

    • Inventor(s)
      河田 則文, LE THI THANH THUY
    • Industrial Property Rights Holder
      河田 則文, LE THI THANH THUY
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-566309

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Published: 2021-12-27  

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