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IMPROVED GENE TRANSDUCTION WITH RECOMBINANT AAV FOLLOWING IMMUNE TOLERANCE.

Research Project

Project/Area Number 16K07081
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Laboratory animal science
Research InstitutionUniversity of Tsukuba

Principal Investigator

Ishii Akiko  筑波大学, 医学医療系, 講師 (10400681)

Co-Investigator(Kenkyū-buntansha) 喜納 裕美 (早下裕美)  日本医科大学, 大学院医学研究科, 助教 (60532728)
岡田 浩典  日本医科大学, 大学院医学研究科, 研究生 (80416271)
Research Collaborator Okada Takashi  
Takeda Sin'ichi  
Sankai Tadashi  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords遺伝子治療 / 免疫寛容 / 筋ジストロフィー / アデノ随伴ウイルス / カニクイザル / ヒト歯髄類似細胞 / AAVベクター / 免疫寛容誘導 / 組換えAAV / 骨格筋 / 組換えAAVベクター / 歯髄類似細胞 / アデノ関連ウイルス
Outline of Final Research Achievements

Recombinant adeno-associated virus (rAAV) is a promising viral vector for gene therapy of Duchenne muscular dystrophy (DMD). Emergence of circulating dystrophin-specific T cells was reported in DMD patients treated with rAAV. Therefore, immunomodulation is a necessary requirement for successful gene therapy. Immune tolerance induction is immunosuppressive method and we used it as a novel alternative for this purpose. Our research consist on inducing immune tolerance using dental pulp stem cells (DPSCs) and the effects on the AAV-mediated expression of LacZ in the skeletal muscle of cynomolgus monkey. Without DPSCs, LacZ expression was not detected at any point of the observation period. Using DPSCs, LacZ expression was successfully detected at 48 weeks after the injection.
DPSCs administration was able to reduce immune response to rAAV9 and LacZ. This DPSCs-assisted transduction strategy can enhance the therapeutic benefits of AAV-mediated gene therapy of DMD.

Academic Significance and Societal Importance of the Research Achievements

Duchenne型筋ジストロフィーは,根本的な治療法がなく,遺伝子治療法の確立が望まれている.本研究は組換えAAVが筋ジストロフィーの遺伝子治療に用いることができるかどうかを検討する研究であり,ヒトの遺伝子治療の基礎的研究として重要である.iPS細胞を使用しても,何らかの方法により効率的に欠失している遺伝子の導入が必要である.AAVは病原性がないこと,長期発現が可能であることからもっとも有望な遺伝子導入法である.本研究で組換えAAVの安全性および免疫寛容の誘導による効果の持続法が確立されれば,他の遺伝性疾患に対する遺伝子治療も選択肢が広がり,遺伝子疾患患者にとって福音であり社会的意義は大きい.

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (6 results)

All 2018 2017 2016

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

  • [Journal Article] Highly Efficient Ultracentrifugation-free Chromatographic Purification of Recombinant AAV Serotype 92018

    • Author(s)
      Tomono T, Hirai Y, Okada H, Miyagawa Y, Adachi 1, Sakamoto S, Kawano Y, Chono H, Mineno J, Ishii A, Shimada T, Onodera M, Tamaoka A, Okada T.
    • Journal Title

      Mol Ther Methods Clin Dev

      Volume: 11 Pages: 180-190

    • DOI

      10.1016/j.omtm.2018.10.015

    • NAID

      120007128300

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Ultracentrifugation-free chromatography-mediated large-scale purification of recombinant adeno-associated virus serotype 1 (rAAV1).2016

    • Author(s)
      Taro Tomono, Yukihiko Hirai, Hironori Okada, Kumi Adachi, Akiko Ishii, Takashi Shimada, Masafumi Onodera, Akira Tamaoka, and Takashi Okada
    • Journal Title

      Molecular Therapy - Methods & Clinical Development

      Volume: 3 Pages: 15058-15058

    • DOI

      10.1038/mtm.2015.58

    • NAID

      120007128523

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Immune response elicited by gene therapy using adeno-associated virus (AAV) vector for muscular dystrophy2018

    • Author(s)
      Ishii A, Hayashita-Kinoh H, Okada H, Shin JH, Okada T, Takeda S
    • Organizer
      22th Annual Meeting of Japanese Society of Gene and Cell therapy
    • Related Report
      2018 Annual Research Report
  • [Presentation] Refinements of rAAV8 Purification Protocol with Chromatography Technology.2018

    • Author(s)
      Tomono T, Hirai,Y, Okada H, Miyagawa Y, Adachi K, Ishii A, Shimada T, Tamaoka A, Okada T
    • Organizer
      21st Annual Meeting of the American Society of Gene and Cell Therapy
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] rAAV8/9-MEDIATED GENE THERAPY FOR MUSCLULAR DYSTROPHY; TACROLIMUS AMELIORATES IMMUNORESPONCE IN NORMAL PRIMATES2017

    • Author(s)
      石井亜紀子
    • Organizer
      日本遺伝子細胞治療学会
    • Related Report
      2017 Research-status Report
  • [Presentation] EFFECTIVE MICRODYSTROPHIN EXPRESSION IN NON-HUMAN PRIMATE MUSCLE WITH AAV TYPE 8 VECTORS UNDER IMMUNE SUPPRESSION2016

    • Author(s)
      Akiko Ishii, Hironori Okada, Hiromi Hayashita-Kinoh, Jin-Hong Shin, Takashi Okada, Shin’ichi Takeda
    • Organizer
      日本遺伝子細胞治療学会
    • Place of Presentation
      東京虎ノ門ヒルズ東京都港区
    • Year and Date
      2016-07-28
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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