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Explication of resistance to PD-1 blockade on nasopharyngeal car cinoma through the mechanism of protein sorting to exosomes

Research Project

Project/Area Number 21K20946
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0905:Surgery of the organs maintaining homeostasis and related fields
Research InstitutionKanazawa University

Principal Investigator

Kobayashi Eiji  金沢大学, 医学系, 助教 (00632530)

Project Period (FY) 2021-08-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords上咽頭癌 / エクソソーム / PD-L1 / PD-L-1 / Epstein Barrウイルス / PD-1/PD-L1系 / 細胞間情報伝達
Outline of Research at the Start

癌の浸潤・転移には、エクソソームという細胞外小胞が重要な役割を果たしていることが分かってきた。これまで我々は、高転移性癌である上咽頭癌モデルにおいて、エクソソームがその高転移性に寄与することを報告している。
上咽頭癌に対する抗PD-1抗体製剤の奏効率は、期待を下回っている。他の癌種で、PD-L1含有エクソソームと耐性の関連が報告されている。
本研究はエクソソームに着目し、上咽頭癌における抗PD-1抗体製剤耐性の機序を解明し、新規バイオマーカーおよび治療標的の探索を目的とする。

Outline of Final Research Achievements

I focused on UCH-L1 and its farnesylation, which are reported to play roles in protein sorting to exosomes on nasopharyngeal carcinoma (NPC) models. I evaluated molecular effects of farnesyltransferase inhibitors, FTI-277 and Tipifarnib, to NPC cells. It is reported recently that Tipifarnib has anti-tumor effect against head and neck carcinomas.
I have shown that these farnesyltransferase inhibitors suppress release of exosomes by NPC cells, and suppress expression of PD-L1 by NPC cells. These results suggests that protein farnesylation plays some roles on formation and release of exosomes, especially on formation of PD-L1 positive exosomes.

Academic Significance and Societal Importance of the Research Achievements

癌の浸潤・転移には、エクソソームと呼ばれる細胞外小胞が関わる細胞間情報伝達機構が重要な役割を果たしていることが分かってきた。近年抗PD-1抗体製剤が、上咽頭癌を含む頭頸部癌において承認されたが、その奏効率は期待を下回っている。他の癌種において薬剤耐性機構へのエクソソームへの関与が報告されており、上咽頭においても同様に、その薬剤耐性機構に、エクソソームが関与していることが予想される。本研究によって、上咽頭癌におけるエクソソームへのタンパク分泌機構の解明につながった。抗PD-1抗体製剤耐性の機序の解明ならびにその回避を通じた臨床応用・新規創薬につながる社会的意義のある研究である。

Report

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

    (12 results)

All 2023 2022

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (6 results) (of which Int'l Joint Research: 2 results) Book (1 results)

  • [Journal Article] EBV genome variations enhance clinicopathological features of nasopharyngeal carcinoma in a non‐endemic region2022

    • Author(s)
      Kondo Satoru、Okuno Yusuke、Murata Takayuki、Dochi Hirotomo、Wakisaka Naohiro、Mizokami Harue、Moriyama‐Kita Makiko、Kobayashi Eiji、Kano Makoto、Ueno Takayoshi、et al.
    • Journal Title

      Cancer Science

      Volume: 113 Issue: 7 Pages: 2446-2456

    • DOI

      10.1111/cas.15381

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Estrogen induces the expression of <scp>EBV</scp> lytic protein <scp>ZEBRA</scp> , a?marker of poor prognosis in nasopharyngeal carcinoma2022

    • Author(s)
      Dochi H、Kondo S、Murata T、Fukuyo M、Nanbo A、Wakae K、Jiang P、Hamabe T、Tanaka M、Nishiuchi T、Mizokami H、Moriyama M、Kobayashi E、Hirai N、Komori T、Ueno T、Nakanishi Y、Hatano M、Endo K、Sugimoto H、Wakisaka N、Juang H、Muramatsu M、Kaneda A、Yoshizaki T
    • Journal Title

      Cancer Science

      Volume: 113 Issue: 8 Pages: 2862-2877

    • DOI

      10.1111/cas.15440

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Protein Farnesylation on Nasopharyngeal Carcinoma, Molecular Background and Its Potential as a Therapeutic Target2022

    • Author(s)
      Kobayashi Eiji、Kondo Satoru、Dochi Hirotomo、Moriyama-Kita Makiko、Hirai Nobuyuki、Komori Takeshi、Ueno Takayoshi、Nakanishi Yosuke、Hatano Miyako、Endo Kazuhira、Sugimoto Hisashi、Wakisaka Naohiro、Yoshizaki Tomokazu
    • Journal Title

      Cancers

      Volume: 14 Issue: 12 Pages: 2826-2826

    • DOI

      10.3390/cancers14122826

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 頭頸部癌に対する化学放射線療法症例における全身性炎症反応と サルコペニア評価の意義2022

    • Author(s)
      遠藤一平、小林英士、平井信行、小森岳、中西庸介、近藤悟、吉崎智一
    • Journal Title

      金沢大学十全医学会雑誌

      Volume: 131 Pages: 32-40

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] EBV genome variations enhance clinicopathological features of nasopharyngeal carcinoma in a non-endemic region2022

    • Author(s)
      Kondo, Satoru; Okuno, Yusuke; Murata, Takayuki; Dochi, Hirotomo; Wakisaka, Naohiro; Mizokami, Harue; Moriyama-Kita, Makiko; Kobayashi, Eiji; Kano, Makoto; Komori, Takeshi; Hirai, Nobuyuki; Ueno, Takayoshi; Nakanishi, Yosuke; Endo, Kazuhira; Sugimoto, Hisashi; Kimura, Hiroshi; Yoshizaki, Tomokazu
    • Journal Title

      Cancer Science

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] エクソソームの上咽頭癌転移・浸潤能への関与とLiquid Biopsyへの応用の展望2023

    • Author(s)
      小林英士、上野貴雄、近藤悟、吉崎智一
    • Organizer
      第6回CTC臨床応用研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Clinical outcomes of Nivolumab its prognostic factors related to tumor immunity in head and neck malignancies2022

    • Author(s)
      Eiji Kobayashi, Satoru Kondo, Hisashi Sugimoto, Tomokazu Yoshizaki
    • Organizer
      18th Japan-Korea Joint Meeting of Otorhinolaryngology - Head and Neck Surgery
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 当科におけるNivolumabの使用成績および腫瘍免疫に関連した予後因子の検討2022

    • Author(s)
      小林英士、吉崎智一
    • Organizer
      第1回日本耳鼻咽喉科免疫アレルギー感染症学会
    • Related Report
      2021 Research-status Report
  • [Presentation] C-Terminal Farnesylation of UCH-L1 Plays a Role in Transport of Epstain-Barr Virus Primary Oncoprotein LMP1 to Exosomes2022

    • Author(s)
      Eiji Kobayashi, Satoru Kondo, Christopher B Whitehurst, Tomokazu Yoshizaki, Joseph S Pagano, Julia Shakelford
    • Organizer
      19th International Symposium on Epstein-Barr Virus and associated disease
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 当科における甲状腺分化癌の術後再発期間についての検討2022

    • Author(s)
      小林英士、近藤悟、吉崎智一
    • Organizer
      第80回日本癌学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 外側側頭骨切除術施行時の前方視野確保おける、万能開口器の有用性2022

    • Author(s)
      小林 英士、杉本 寿史、吉崎 智一
    • Organizer
      第22回 耳鼻咽喉科手術支援システム・ナビ研究会
    • Related Report
      2021 Research-status Report
  • [Book] 分子標的薬が適応となる耳鼻咽喉科疾患2022

    • Author(s)
      小林英士、吉崎智一
    • Total Pages
      4
    • Publisher
      東京医学社
    • ISBN
      9784885635502
    • Related Report
      2021 Research-status Report

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Published: 2021-10-22   Modified: 2024-01-30  

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