• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Novel therapeutic strategy for brain metastasis of lung cancer using herpes simplex thymidine kinase bearing Muse cells.

Research Project

Project/Area Number 19K09523
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56010:Neurosurgery-related
Research InstitutionHamamatsu University School of Medicine

Principal Investigator

Sameshima Tetsuro  浜松医科大学, 医学部, 准教授 (00295213)

Co-Investigator(Kenkyū-buntansha) 小泉 慎一郎  浜松医科大学, 医学部附属病院, 講師 (10456577)
難波 宏樹  浜松医科大学, 医学部, 特命研究教授 (60198405)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords自殺遺伝子療法 / 歯髄幹細胞 / HSV-TK / 肺癌脳転移 / matastatic brain tumor / Stem cell / SHED / bystander effect / thymidine kinase / 脱落乳歯歯髄幹細胞 / Muse-tk細胞 / 抗腫瘍効果 / 転移性脳腫瘍
Outline of Research at the Start

腫瘍指向性を有する生体組織由来多能性幹細胞の一つであるMuse細胞を用いた悪性グリオーマに対する自殺遺伝子幹細胞療法の研究開発を行っており、これまでにHSVtk発現Muse細胞(Muse-tk細胞)を用い、強力な抗腫瘍効果と腫瘍指向性について明らかにした。また、マウス脳内に移植したMuse-tk細胞はGCV投与のより完全に消失することから、安全性も示された。今回、悪性グリオーマ以外の脳腫瘍への適応拡大を目指し、肺腺癌による転移性脳腫瘍を治療対象とし、Muse-tk細胞を用いた自殺遺伝子幹細胞療法の有効性を検証すると共に臨床応用に際し必ず問われる正常脳に対する本治療の毒性についての検証を行う。

Outline of Final Research Achievements

Wild-type HSV-TK was transfected into SHED, cytotoxicity associated with hypermetabolism of thymidine appeared, so we introduced a mutation that makes it less likely to metabolize thymidine. We demonstrated that the HSV-TK gene can be safely transduced into SHED using the modified HSV-TK, and that SHED-TK is sensitive to GCV and has an anti-tumor effect due to the bystander effect. In the treatment model, the increase in tumor luminescence was suppressed as in the co-transplantation model, and the survival period of mice was prolonged. Suicide gene therapy with TK-expressing SHED was also shown to be effective in lung cancer brain metastases.

Academic Significance and Societal Importance of the Research Achievements

肺癌脳転移に対しては手術や定位放射線治療が選択されるが、制御できないこともある。実 際、原発巣がコントロールされている転移性脳腫瘍患者の生存期間中央値は19.7ヶ月と報告されており、脳転移巣に特異性があり、全身性の副作用が限定的な新規治療法が望まれる疾患である。幹細胞を用いた自殺遺伝子療法はprodrugを使用して腫瘍特異的に抗腫瘍効果を示す点で安全性が高い。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (6 results)

All 2022 2021

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

  • [Journal Article] Molecular Mechanisms and Clinical Challenges of Glioma Invasion2022

    • Author(s)
      Tomoya Oishi, Shinichiro Koizumi, Kazuhiko Kurozumi
    • Journal Title

      Brain Sciences

      Volume: 20;12(2) Issue: 2 Pages: 291-291

    • DOI

      10.3390/brainsci12020291

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Efficacy of HSV-TK/GCV system suicide gene therapy using stem cells from human exfoliated deciduous teeth (SHED) expressing “modified” HSV-TK against brain metastasis of non-small cell lung cancer2022

    • Author(s)
      Tomoya Oishi
    • Organizer
      World Federation of Neuro-Oncology Societies 2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 非小細胞性肺癌脳転移に対するTk発現脱落乳歯髄幹細胞を用いた自殺遺伝子療法の効果2021

    • Author(s)
      大石知也
    • Organizer
      第39回日本脳腫瘍学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 非小細胞性肺癌脳転移に対するTK発現脱落乳歯髄幹細胞を用いた自殺遺伝子療法の効果2021

    • Author(s)
      大石知也
    • Organizer
      第80回日本脳神経外科学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Efficacy of the HSV1-TK/GCV suicide gene therapy against brain metastasis of non-small cell lung cancer usin stem cells from human exfoliated deciduous teeth (SHED) expressing HSV-TK2021

    • Author(s)
      Tomoya Oishi
    • Organizer
      第27回日本遺伝子細胞治療学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 非小細胞性肺癌脳転移に対するTK発現脱落乳歯髄幹細胞を用いた自殺遺伝子療法の有効性2021

    • Author(s)
      大石知也
    • Organizer
      第21回日本分子脳神経外科学会学術集会
    • Related Report
      2021 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2023-03-23  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi