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2022 Fiscal Year Annual Research Report

Investigation of tumor immune escape mechanisms in liver cancer using allograft mouse model

Research Project

Project/Area Number 20K08276
Research InstitutionChiba University

Principal Investigator

千葉 哲博  千葉大学, 大学院医学研究院, 講師 (00381583)

Co-Investigator(Kenkyū-buntansha) 金山 健剛  千葉大学, 医学部附属病院, 医員 (20835102)
Project Period (FY) 2020-04-01 – 2023-03-31
Keywords腫瘍微小環境
Outline of Annual Research Achievements

ポリコームタンパクEZH2の肝癌微小環境に与える影響を詳細に検証するため、in vivo マウスモデルを用いた実験系を行った。
非肥満性糖尿病/重症複合免疫不全マウスを用いたマウス肝癌細胞皮下移植モデルでは、EZH2阻害剤(UNC1999)が著明に腫瘍増大を抑制するのに対して、同種異所性移植モデル(Hepa1-6細胞を皮下移植したC57BL/6マウス、H22細胞を皮下移植したBalb/cマウス)では、EZH2阻害剤の効果が減じることを示した。
コラゲナーゼ分離後の腫瘍構成細胞のフローサイトメトリー解析の結果、EZH2阻害剤投与により骨髄由来抑制細胞(MDSC)の数が有意に増加していることを見いだした。Gr-1中和抗体の併用投与は、MDSCの減少及びCD8+T細胞数の増加を来たし、抗腫瘍効果を回復させることが明らかになった。

  • Research Products

    (9 results)

All 2023 2022

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (2 results)

  • [Journal Article] Miglustat, a glucosylceramide synthase inhibitor, mitigates liver fibrosis through TGF-β/Smad pathway suppression in hepatic stellate cells.2023

    • Author(s)
      Iwanaga T, Chiba T, Nakamura M, Kaneko T, Ao J, et al.
    • Journal Title

      Biochem Biophys Res Commun.

      Volume: 642 Pages: 192-200

    • DOI

      10.1016/j.bbrc.2022.12.025.

    • Peer Reviewed
  • [Journal Article] Successful Identification of a Novel Therapeutic Compound for Hepatocellular Carcinoma Through Screening of ADAM9 Inhibitors.2023

    • Author(s)
      Ogawa K, Chiba T, Nakamura M, Arai J, Zhang J, et al.
    • Journal Title

      Anticancer Res.

      Volume: 43 Pages: 1043-1052

    • DOI

      10.21873/anticanres.16249

    • Peer Reviewed / Open Access
  • [Journal Article] Alteration of the tumor microenvironment by pharmacological inhibition of EZH2 in hepatocellular carcinoma.2023

    • Author(s)
      Qiang N, Ao J, Nakamura M, Chiba T, Kusakabe Y, Kaneko T, Kurosugi A, Kogure T, Ma Y, Zhang J, Ogawa K, Kan M, Iwanaga T, Sakuma T, Kanayama K, Kanzaki H, Kojima R, Nakagawa R, Kondo T, Nakamoto S, Muroyama R, Kato J, Mimura N, Ma A, Jin J, Kato N.
    • Journal Title

      Int Immunopharmacol.

      Volume: 118 Pages: 110068

    • DOI

      10.1016/j.intimp.2023.110068.

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of Atezolizumab plus Bevacizumab in Patients with Hepatocellular Carcinoma Harboring CTNNB1 Mutation in Early Clinical Experience.2022

    • Author(s)
      Ogawa K, Kanzaki H, Chiba T, Ao J, Qiang N, et al.
    • Journal Title

      J Cancer

      Volume: 13 Pages: 2656-2661

    • DOI

      10.7150/jca.71494

    • Peer Reviewed / Open Access
  • [Journal Article] The RNA-Binding Protein ELAVL1 Regulates Hepatitis B Virus Replication and Growth of Hepatocellular Carcinoma Cells.2022

    • Author(s)
      Kanzaki H, Chiba T, Kaneko T, Ao J, Kan M, Muroyama R, Nakamoto S, Kanda T, Maruyama H, Kato J, Zen Y, Kotani A, Sekiba K, Otsuka M, Ohtsuka M, Kato N.
    • Journal Title

      Int J Mol Sci

      Volume: 23 Pages: 7878

    • DOI

      10.3390/ijms23147878

    • Peer Reviewed / Open Access
  • [Journal Article] A diet-induced murine model for non-alcoholic fatty liver disease with obesity and insulin resistance that rapidly develops steatohepatitis and fibrosis.2022

    • Author(s)
      Sakuma T, Nakamura M, Chiba T, Iwanaga T, Kan M, Kojima R, Ao J, Ma Y, Unozawa H, Fujita N, Kanayama K, Kanzaki H, Koroki K, Kobayashi K, Nakagawa R, Kanogawa N, Kiyono S, Kondo T, Saito T, Ogasawara S, Nakamoto S, Muroyama R, Kato J, Kishimoto T, Kato N.
    • Journal Title

      Lab Invest.

      Volume: 102 Pages: 1150-1157

    • DOI

      10.1038/s41374-022-00807-6.

    • Peer Reviewed
  • [Journal Article] Bile proteome analysis by high-precision mass spectrometry to examine novel biomarkers of primary sclerosing cholangitis.2022

    • Author(s)
      Kan M, Chiba T, Konno R, Kouchi Y, Mishima T, Kawashima Y, Kishimoto T, Ohtsuka M, Ohara O, Kato N.
    • Journal Title

      J Hepatobiliary Pancreat Sci.

      Volume: in press Pages: in press

    • DOI

      10.1002/jhbp.1299

    • Peer Reviewed
  • [Presentation] 高精度質量分析を用いた胆汁プロテオーム解析による原発性硬化性胆管炎の病態解明の 試み2022

    • Author(s)
      菅元康、千葉哲博、加藤直也
    • Organizer
      第108回日本消化器病学会総会
  • [Presentation] 肝細胞癌におけるCTNNB1遺伝子変異とアテゾリズマブ/ベバシズマブ併用療法の初期治療効果と末梢血CCL5濃度に関する検討2022

    • Author(s)
      小川慶太、千葉哲博、加藤直也
    • Organizer
      第59回日本消化器免疫学会総会

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Published: 2023-12-25  

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