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Elucidation of the mechanism for revertant mosaicism using model mice

Research Project

Project/Area Number 21H02943
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 53050:Dermatology-related
Research InstitutionNara Medical University

Principal Investigator

Shinkuma Satoru  奈良県立医科大学, 医学部, 准教授 (00613788)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2022: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2021: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Keywords表皮水疱症 / 遺伝子編集 / 復帰変異モザイク / 再生医療 / 相同組換え / 細胞競合
Outline of Research at the Start

遺伝子治療は遺伝性皮膚疾患の根治的治療の有望な選択肢である。しかし、遺伝子治療した細胞の全身移植は、安全面やコスト面から実現困難である。もし遺伝子治療した細胞が周囲に対し優位に増殖した場合、最小限の移植で広範囲にその効果を波及することが可能になる。近年、様々な遺伝性皮膚疾患で後天的に一部の皮膚の遺伝子が正常化することが明らかになった。興味深いことに表皮水疱症の正常化部分の面積は他の疾患に比し極めて大きく、増殖優位性を獲得していることが示唆される。そこで、本研究では、遺伝子編集技術により正常化した皮膚を有する表皮水疱症モデルマウスを作製し、表皮細胞の増殖優位性の獲得機序を解明する。

Outline of Final Research Achievements

The area of revertant mosaicism in epidermolysis bullosa is significantly larger compared to other diseases, suggesting that revertant cells in epidermolysis bullosa acquire a proliferative advantage. In this study, to elucidate the mechanism by which epidermal cells acquire proliferative advantage, we created epidermolysis bullosa model mice with revertant mosaicism using gene editing technology.
We generated junctional epidermolysis bullosa model mice with compound heterozygous deletion mutations in the Col17a1 gene. Furthermore, by intradermally administering a CRISPR/Cas9 system that specifically cleaves the region between these mutations, we successfully induced revertant mosaicism.

Academic Significance and Societal Importance of the Research Achievements

遺伝性皮膚疾患の根治的治療の有望な選択肢である遺伝子治療は、全身への遺伝子治療した細胞の移植が必要であり、安全面やコスト面から実現困難である。もし遺伝子治療した細胞が周囲に対して優位に増殖すれば、最小限の移植で広範囲に効果を波及させることが可能になる。表皮水疱症の復帰変異モザイクの面積は他の疾患に比べて大きく、増殖優位性を獲得していることが示唆されている。本研究では、表皮細胞の増殖優位性を解明するため、復帰変異モザイクを有する表皮水疱症モデルマウスを作製した。この成果は、復帰変異モザイクの研究に留まらず、遺伝子・再生治療戦略のブレークスルーにつながる可能性がある。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (10 results)

All 2023 2022 2021

All Journal Article (5 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results)

  • [Journal Article] 2.表皮水疱症でみられる復帰変異モザイク2023

    • Author(s)
      新熊 悟
    • Journal Title

      The Japanese Journal of Dermatology

      Volume: 133 Issue: 13 Pages: 3065-3073

    • DOI

      10.14924/dermatol.133.3065

    • ISSN
      0021-499X, 1346-8146
    • Year and Date
      2023-12-20
    • Related Report
      2023 Annual Research Report
  • [Journal Article] Possible relation of cathepsin C activity and seasonal fluctuation of skin lesions in Papillon?Lef?vre syndrome2023

    • Author(s)
      Sakai Akari、Shinkuma Satoru、Miura Nobuaki、Deguchi Tokiko、Oginezawa Mahoko、Nakajima Mami、Katsumi Tatsuya、Hayashi Ryota、Abe Riichiro
    • Journal Title

      British Journal of Dermatology

      Volume: 190 Issue: 2 Pages: 272-274

    • DOI

      10.1093/bjd/ljad373

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] New insight of itch mediators and proinflammatory cytokines in epidermolysis bullosa2022

    • Author(s)
      Nguyen Hong Ha、Shinkuma Satoru、Hayashi Ryota、Katsumi Tatsuya、Nishiguchi Tomoki、Natsuga Ken、Fujita Yasuyuki、Abe Riichiro
    • Journal Title

      Journal of Cutaneous Immunology and Allergy

      Volume: 5 Issue: 3 Pages: 78-87

    • DOI

      10.1002/cia2.12230

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Advances in gene therapy and their application to skin diseases: A review2021

    • Author(s)
      Shinkuma Satoru
    • Journal Title

      Journal of Dermatological Science

      Volume: 103 Issue: 1 Pages: 2-9

    • DOI

      10.1016/j.jdermsci.2021.05.004

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Current topics in Epidermolysis bullosa: Pathophysiology and therapeutic challenges.2021

    • Author(s)
      Natsuga K, Shinkuma S, Hsu CK, Fujita Y, Ishiko A, Tamai K, McGrath JA
    • Journal Title

      J Dermatol Sci

      Volume: 104(3) Issue: 3 Pages: 164-176

    • DOI

      10.1016/j.jdermsci.2021.11.004

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 復帰変異モザイクを用いた自家培養表皮による表皮水疱症の治療と復帰変異モデルマウスの作製2023

    • Author(s)
      新熊 悟
    • Organizer
      第19回加齢皮膚医学研究会 再生医療のシンポジウム
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] SCFを介したメラノサイトと表皮角化細胞の細胞間相互作用2023

    • Author(s)
      新熊 悟
    • Organizer
      第5回日本白斑学会学術大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] New insight of itch mediators and proinflammatory cytokines in epidermolysis bullosa2022

    • Author(s)
      Hong Ha Nguyen, Satoru Shinkuma, Ryota Hayashi, Tatsuya Katsumi, Tomoki Nishiguchi, Ken Natsuga, Yasuyuki Fujita, Riichiro Abe
    • Organizer
      Society of Investigative Dermatology annual meeting 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] モザイク病変と遺伝性皮膚疾患2021

    • Author(s)
      新熊 悟
    • Organizer
      第72回 日本皮膚科学会中部支部学術大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] CRISPR/Cas9 targeting an intronic region for retrieving Col17 expression in junctional epidermolysis bullosa model mice2021

    • Author(s)
      Hong Ha Nguyen
    • Organizer
      The 46th annual meeting of the Japanese society for investigative dermatology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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