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Identification of HLA-binding peptides of liver cnancer stem cells

Research Project

Project/Area Number 20K17619
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionYamaguchi University

Principal Investigator

Kanekiyo Shinsuke  山口大学, 医学部, 特別医学研究員 (80555730)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords癌
Outline of Research at the Start

癌の転移は予後不良の主因であり、転移・再発抑制は、患者QOLを改善及び生存期間延長も期待される。癌幹細胞としての顕著な表現型を示す癌幹細胞様浮遊細胞塊 (Cancer stem-like sphere cells, CSLCs) を誘導し、CSLC特異的遺伝子発現を指標とした一細胞解析及び質量分析によるpeptidome解析により、転移抑制免疫療法に有用なペプチドワクチンを開発する。特に、CSLC特異的HLA提示抗原ペプチド同定によるペプチドワクチンを想定する。転移性再発の原因となるCSLCに有効な治療法を開発することで、外科的治癒切除後の癌転移・再発に対するリスクを低減させる。

Outline of Final Research Achievements

Comprehensive analysis by mass spectrometry (peptidome analysis) of peptides enriched by immunoprecipitation on a Sepharose bead column prepared with anti-HLA*A24:02 antibody was performed. The peptide sequences obtained were correlated with the mRNA expression encoding the protein containing the peptide, and the product with high mRNA expression was homologous to the consensus sequence. As a result of repeated experimental condition examinations, we succeeded in improving the peptide identity by using SCX columns for cation exchange. This allowed us to identify nearly 1,000 9-mer peptides with FDR<5%, most of which showed HLA-binding consensus sequences.

Academic Significance and Societal Importance of the Research Achievements

がん細胞上でのHLA拘束ペプチドの配列同定は、オーダーメイド癌免疫療法の実現に向けて学術的・社会的に意義がある。本研究によって、peptideome解析 (がん組織と抗HLA抗体を用いた免疫沈降物の質量分析) の感度を向上させることができた。得られたペプチド配列を検討した結果、HLA拘束ペプチドはコンセンサス配列との相同性を示し、元となるタンパクをコードするmRNAレベルでは高い発現を示した。これらの結果から、プロテオミクスではなく次世代シーケンサーを用いた解析データのみでも、個々の症例に応じたHLA拘束ペプチドの配列を予測できることが示唆された。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (7 results)

  • [Journal Article] Elevated expression of RAB3B plays important roles in chemoresistance and metastatic potential of hepatoma cells2022

    • Author(s)
      Tsunedomi Ryouichi、Yoshimura Kiyoshi、Kimura Yuta、Nishiyama Mitsuo、Fujiwara Nobuyuki、Matsukuma Satoshi、Kanekiyo Shinsuke、Matsui Hiroto、Shindo Yoshitaro、Watanabe Yusaku、Tokumitsu Yukio、Yoshida Shin、Iida Michihisa、Suzuki Nobuaki、Takeda Shigeru、Ioka Tatsuya、Hazama Shoichi、Nagano Hiroaki
    • Journal Title

      BMC Cancer

      Volume: 22 Issue: 1 Pages: 260-260

    • DOI

      10.1186/s12885-022-09370-1

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pancreatic Cancer Stem-Like Cells With High Calreticulin Expression Associated With Immune Surveillance2021

    • Author(s)
      Fujiwara Yasuhiro、Tsunedomi Ryouichi、Yoshimura Kiyoshi、Matsukuma Satoshi、Fujiwara Nobuyuki、Nishiyama Mitsuo、Kanekiyo Shinsuke、Matsui Hiroto、Shindo Yoshitaro、Tokumitsu Yukio、Yoshida Shin、Iida Michihisa、Suzuki Nobuaki、Takeda Shigeru、Ioka Tatsuya、Hazama Shoichi、Nagano Hiroaki
    • Journal Title

      Pancreas

      Volume: 50 Issue: 3 Pages: 405-413

    • DOI

      10.1097/mpa.0000000000001772

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Siglec-7 is a predictive biomarker for the efficacy of cancer vaccination against metastatic colorectal cancer2020

    • Author(s)
      Yamada Kensuke、Hazama Shoichi、Suzuki Nobuaki、Xu Ming、Nakagami Yuki、Fujiwara Nobuyuki、Tsunedomi Ryouichi、Yoshida Shin、Tomochika Shinobu、Matsukuma Satoshi、Matsui Hiroto、Tokumitsu Yukio、Kanekiyo Shinsuke、Shindo Yoshitaro、Watanabe Yusaku、Iida Michihisa、Takeda Shigeru、Ioka Tatsuya、Ueno Tomio、et al.
    • Journal Title

      Oncology Letters

      Volume: 21 Issue: 1 Pages: 1-1

    • DOI

      10.3892/ol.2020.12271

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Serum LOX-1 is a novel prognostic biomarker of colorectal cancer.2020

    • Author(s)
      Nakashima-Nakasuga C, Hazama S, Suzuki N, Nakagami Y, Xu M, Yoshida S, Tomochika S, Fujiwara N, Matsukuma S, Matsui H, Tokumitsu Y, Kanekiyo S, Shindo Y, Maeda N, Tsunedomi R, Iida M, Takeda S, Yoshino S, Ueno T, Hamamoto Y, Ogihara H, Hoshii Y, Nagano H.
    • Journal Title

      Int J Clin Oncol.

      Volume: - Issue: 7 Pages: 1308-1317

    • DOI

      10.1007/s10147-020-01673-2

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] A phase I study of multi-HLA-binding peptides derived from heat shock protein 70/glypican-3 and a novel combination adjuvant of hLAG-3Ig and Poly-ICLC for patients with metastatic gastrointestinal cancers: YNP01 trial.2020

    • Author(s)
      Masao;Nakajima, Shoichi, Hazama; Koji;Tamada. Nobuaki;Suzuki.Hiroaki;Nagano
    • Journal Title

      Cancer Immunology, Immunotherapy

      Volume: 5 Issue: 8 Pages: 5-10

    • DOI

      10.1007/s00262-020-02518-7

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 治療抵抗性肝癌幹細胞様 Sphere 細胞における RAB3B の役割2021

    • Author(s)
      恒富亮一
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Research-status Report
  • [Presentation] 切除可能肝細胞癌に対する微小環境をターゲットにした新規ペプチドワクチン療法2020

    • Author(s)
      鈴木伸明、兼清信介、他
    • Organizer
      第42回日本癌局所療法研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] 切除可能肝細胞癌に対する新規ペプチドワクチンを用いた周術期補助療法の開発2020

    • Author(s)
      新藤芳太郎、兼清信介、他
    • Organizer
      第41回癌免疫外科研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] 樹状細胞ワクチンによる肝細胞癌術後補助療法(第Ⅰ/Ⅱ相臨床試験)―最終報告と今後の展望―2020

    • Author(s)
      松井洋人、兼清信介、他
    • Organizer
      第41回癌免疫外科研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] 消化器癌における抑制性免疫解除と革新的新規免疫療法の開発2020

    • Author(s)
      鈴木伸明、兼清信介、他
    • Organizer
      第120回日本外科学会定期学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] 治療抵抗性肝癌幹細胞様 Sphere 細胞における RAB3B 遺伝子2020

    • Author(s)
      恒富亮一、兼清信介、他
    • Organizer
      第79回日本癌学会学術総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 誘導癌幹細胞における免疫逃避機構の検討2020

    • Author(s)
      恒富亮一、兼清信介、他
    • Organizer
      第58回日本癌治療学会学術集会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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