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New Treatment Strategy for SMA: In tron-retention of the SMN2 gene

Research Project

Project/Area Number 17K10077
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Pediatrics
Research InstitutionKobe Gakuin University (2018-2019)
Kobe University (2017)

Principal Investigator

Nishio Hisahide  神戸学院大学, 総合リハビリテーション学部, 教授 (80189258)

Co-Investigator(Kenkyū-buntansha) 篠原 正和  神戸大学, 医学研究科, 准教授 (80437483)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords脊髄性筋萎縮症 / SMN1遺伝子 / SMN2遺伝子 / イントロン・リテンション / スプライス部位 / アンチセンスオリゴヌクレオチド / ヌシネルセン / オフターゲット効果 / SMN1遺伝子 / SMN2遺伝子 / スプライシング / 潜在性エクソン / 新規治療法
Outline of Final Research Achievements

Spinal muscular atrophy (SMA) is a motor neuron disease caused by SMN1 gene abnormality. We planned to develop a new treatment strategy for SMA in this project. To produce a higher amount of full-length SMN2 protein in SMA fibroblasts, we designed experiments in which SMN2 intron 7-retention should be induced by antisense oligonucleotide agents (AO). However, when SMA fibroblasts were transfected with AOs targeting the splice sites of SMNN2 intron 7, unexpected results were obtained; retention of intron 7 was hardly introduced, but exon 7 was rather incorporated into SMN2 mRNA. Our study revealed that AO, which targeted the splice sites of intron 7, might induce SMN2 exon 7 inclusion, suggesting that our AOs might have splicing-enhancing function. We also did experiments with Nusinesrsen-like AO (Nusi). High dose of Nusi produced a new transcript with a cryptic exon in SMN2 intron 6, suggesting the possibility of Nusinersen's off-target effect.

Academic Significance and Societal Importance of the Research Achievements

(学術的意義)SMN2遺伝子エクソン7において、スプライス部位を標的としたアンチセンスオリゴヌクレオチド(AO)がスプライシングを阻止しないで、かえってスプライシング増強機能を示したことは、スプライシング装置が遺伝子によって異なることを示している。
(社会的意義)ヌシネルセンは、SMA治療薬として、2016年米国で、翌年わが国で薬事承認を受けた。わが国では、400人を超えるSMA患者が本薬剤で治療を受けている。本薬剤のオフターゲット効果は報告されていないが、今回の実験結果はオフターゲット効果の存在を示唆している。ヌシネルセンの投与に際しては、今後も慎重な観察が必要である。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (19 results)

All 2019 2018 2017 Other

All Journal Article (10 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 10 results,  Open Access: 5 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Remarks (2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] A Novel System for Spinal Muscular Atrophy Screening in Newborns: Japanese Pilot Study2019

    • Author(s)
      Shinohara M, Niba ETE, Nishio H, et al.
    • Journal Title

      International Journal of Neonatal Screening

      Volume: 5 Issue: 4 Pages: 41-41

    • DOI

      10.3390/ijns5040041

    • NAID

      120006811121

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Incidence of Infantile Spinal Muscular Atrophy on Shikoku Island of Japan2019

    • Author(s)
      OKamoto K, Fukuda M, Nishio H, et al.
    • Journal Title

      Brain and Development

      Volume: 41 Issue: 1 Pages: 36-42

    • DOI

      10.1016/j.braindev.2018.07.016

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Intron-retained transcripts of the spinal muscular atrophy genes, SMN1 and SMN2.2018

    • Author(s)
      Harahap NIF, Niba ETE, Ar Rochmah M, Wijaya YOS, Saito T, Saito K, Awano H, Morioka I, Iijima K, Lai PS, Matsuo M, Nishio H, Shinohara M.
    • Journal Title

      Brain & Devwlopment

      Volume: 40 Issue: 8 Pages: 670-677

    • DOI

      10.1016/j.braindev.2018.03.001

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Receiver operating curve analyses of urinary titin of healthy 3-y-old children may be a noninvasive screening method for Duchenne muscular dystrophy2018

    • Author(s)
      Matsuo M, Shirakawa T, Awano H, Nishio H.
    • Journal Title

      Clinica Chimica Acta

      Volume: 486 Pages: 110-114

    • DOI

      10.1016/j.cca.2018.07.041

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Novel BICD2 mutation in a Japanese family with autosomal dominant lower extremity-predominant spinal muscular atrophy-22018

    • Author(s)
      Yoshioka M, Morisada N, Toyoshima D, Yoshimura H, Nishio H, Iijima K, Takeshima Y, Uehara T, Kosaki K.
    • Journal Title

      Brain & Devwlopment

      Volume: 40 Issue: 4 Pages: 343-347

    • DOI

      10.1016/j.braindev.2017.12.001

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] DMD transcripts in CRL-2061 rhabdomyosarcoma cells show high levels of intron retention by intron-specific PCR amplification2017

    • Author(s)
      Niba ETE, Yamanaka R, Rani AQM, Awano H, Matsumoto M, Nishio H, Matsuo M
    • Journal Title

      Cancer Cell international

      Volume: 17 Issue: 1 Pages: 58-73

    • DOI

      10.1186/s12935-017-0428-4

    • NAID

      120006373783

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Spinal muscular atrophy carriers with two SMN1 copies2017

    • Author(s)
      Ar Rochmah Mawaddah、Awano Hiroyuki、Awaya Tomonari、Harahap Nur Imma Fatimah、Morisada Naoya、Bouike Yoshihiro、Saito Toshio、Kubo Yuji、Saito Kayoko、Lai Poh San、Morioka Ichiro、Iijima Kazumoto、Nishio Hisahide、Shinohara Masakazu
    • Journal Title

      Brain and Development

      Volume: 39 Issue: 10 Pages: 851-860

    • DOI

      10.1016/j.braindev.2017.06.002

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Genetic screening of spinal muscular atrophy using a real-time modified COP-PCR technique with dried blood-spot DNA2017

    • Author(s)
      Ar Rochmah M, Harahap NIF, Niba ETE, Nakanishi K, Awano H, Morioka I, Iijima K, Saito T, Saito K, Lai PS, Takeshima Y, Takeuchi A, Bouike Y, Okamoto M, Nishio H, Shinohara M
    • Journal Title

      Brain Dev.

      Volume: 39(9) Issue: 9 Pages: 774-782

    • DOI

      10.1016/j.braindev.2017.04.015

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] SMA mutations in SMN Tudor and C-terminal domains destabilize the protein2017

    • Author(s)
      Takarada Toru、Ar Rochmah Mawaddah、Harahap Nur Imma Fatimah、Shinohara Masakazu、Saito Toshio、Saito Kayoko、Lai Poh San、Bouike Yoshihiro、Takeshima Yasuhiro、Awano Hiroyuki、Morioka Ichiro、Iijima Kazumoto、Nishio Hisahide、Takeuchi Atsuko
    • Journal Title

      Brain and Development

      Volume: 39 Issue: 7 Pages: 606-612

    • DOI

      10.1016/j.braindev.2017.03.002

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Cryptic splice activation but not exon skipping is observed in minigene assays of dystrophin c.9361+1G4A mutation identified by NGS2017

    • Author(s)
      Emma Tabe Eko Niba
    • Journal Title

      Journal of Human Genetics

      Volume: 1-7 Issue: 5 Pages: 531-537

    • DOI

      10.1038/jhg.2016.162

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 脊髄性筋萎縮症スクリーニング・パイロット・スタディ2019

    • Author(s)
      西尾久英
    • Organizer
      第46回日本マススクリーニング学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 脊髄性筋萎縮症の新生児マススクリーニング2018

    • Author(s)
      西尾久英
    • Organizer
      第121回日本小児科学会学術集会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] SMNハイブリッド遺伝子を有する脊髄性筋萎縮症2/3型の一例2018

    • Author(s)
      杉本真里、佐久間肇、相場佳織、戸田泰子、横地健治、西尾久英
    • Organizer
      第60回日本小児神経学会学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] Genetic diagnosis of spinal muscular atrophy in Japan2017

    • Author(s)
      Hisahide Nishio
    • Organizer
      14th Asian and Oceanian Congress of Child Neurology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Dystrophin Dp427 is lost due to multiple DMD intron retentions in rhabdomyosarcoma CRL-2061 cells.2017

    • Author(s)
      Emma Niba, Ryo Yamanaka, Abdul Qawee Mahyoob Rani, Hiroyuki Awano, Masaaki Matsumoto, Hisahide Nishio, Masafumi Matsuo
    • Organizer
      22nd INTERNATIONAL CONGRESS OF THE WORLD MUSCLE SOCIETY
    • Related Report
      2017 Research-status Report
  • [Presentation] Multi-intron retentions in DMD transcripts in CRL-2061 rhabdomyosarcoma cells identified by intron-specific RT-PCR2017

    • Author(s)
      Emma Niba, Ryo Yamanaka, Rani Adbul, Hiroyuki Awano, Masaaki Matsumoto, Hisahide Nishio, Masafumi Matsuo.
    • Organizer
      The 62nd Annual Meeting of the Japan Society of Human Genetics
    • Related Report
      2017 Research-status Report
  • [Remarks] 神戸学院大学 教員総覧 総合リハビリテーション学部

    • URL

      https://www.kobegakuin.ac.jp/information/public/teacher/rehabilitation/nishio.html

    • Related Report
      2018 Research-status Report
  • [Remarks] 神戸大学大学院医学研究科 地域社会医学・健康科学講座 疫学分野

    • URL

      http://www.med.kobe-u.ac.jp/pbheal/index.html

    • Related Report
      2017 Research-status Report
  • [Patent(Industrial Property Rights)] SNP検出方法2017

    • Inventor(s)
      西尾久英、篠原正和
    • Industrial Property Rights Holder
      西尾久英、篠原正和
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2017-196967
    • Filing Date
      2017
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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