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2015 Fiscal Year Annual Research Report

遺伝子解析に基づいた難聴発症メカニズムの解明および個別化医療システムの構築

Research Project

Project/Area Number 15H02565
Research InstitutionShinshu University

Principal Investigator

宇佐美 真一  信州大学, 学術研究院医学系, 教授 (10184996)

Co-Investigator(Kenkyū-buntansha) 茂木 英明  信州大学, 医学部附属病院, 講師 (60422698)
西尾 信哉  信州大学, 医学部, 助教 (70467166)
Project Period (FY) 2015-04-01 – 2018-03-31
Keywords難聴 / 遺伝子 / ゲノム / 内耳
Outline of Annual Research Achievements

平成27年度は、当研究室の難聴患者 DNA バンク(約 6500 名) のうち、インベーダー法を用いた難聴スクリーニング検査で原因の明らかとならなかった難聴患者 500 例を対象に、難聴の原因遺伝子として報告されている遺伝子の網羅的解析を行った。その結果、大規模集団における日本人難聴患者の原因遺伝子変異のスペクトラムを明らかにすることができた(Nishio and Usami 2015)。
また、既知難聴原因遺伝子の網羅的解析を行っても難聴の原因を特定できなかった症例のうち、比較的大きい家系5家系を対象に全遺伝子のエクソン領域を網羅的にエキソーム 解析を実施した。その結果、うち3家系より、新規の難聴原因候補遺伝子を同定することができた。これらの遺伝子に関して内耳における局在を明らかにすることを目的に、マウス内耳における発現部位を免疫組織染色で確認を行った。また抗体の入手が困難であった1遺伝子に関しては、レーザーキャプチャーマイクロダイセクション法により内耳を部位別に分断し、RNAを抽出して遺伝子発現を確認し、内耳における機能的役割について検討を行った。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

当初の計画どおり500例に対するターゲットリシークエンス解析が完了した。また、原因の特定できなかった家系に関してエクソーム解析を実施し候補遺伝子を同定することができた。

Strategy for Future Research Activity

平成28年度は前年度までに既知難聴原因遺伝子の網羅的解析を行っても難聴の原因を特定できなかった症例のうち、比較的大きい家系を対象に全遺伝子のエクソン領域を網羅的にエキソーム 解析を実施し、新規の難聴原因候補遺伝子を同定する。
また、新規の遺伝子に関しては機能や難聴発症のメカニズムが不明であることより、マウス内耳における発現部位を免疫組織染色およびレーザーキャプチャーマイクロダイセクション法により内耳を部位別に分断し、RNAを抽出して遺伝子発現を確認することにより、内耳における局在や機能的役割について検討を行い、論文として報告する。

  • Research Products

    (23 results)

All 2016 2015

All Journal Article (17 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 17 results,  Open Access: 16 results,  Acknowledgement Compliant: 17 results) Presentation (6 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results)

  • [Journal Article] Frequency of Usher syndrome type 1 in deaf children by massively parallel DNA sequencing.2016

    • Author(s)
      Yoshimura H, Miyagawa M, Kumakawa K, Nishio S, Usami S.
    • Journal Title

      J Hum Genet

      Volume: 61 Pages: 419-422

    • DOI

      10.1038/jhg.2015.168.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] An effective screening strategy for deafness in combination with a next-generation sequencing platform: a consecutive analysis.2016

    • Author(s)
      Sakuma N, Moteki H, Takahashi M, Nishio SY, Arai Y, Yamashita Y, Oridate N, Usami S.
    • Journal Title

      J Hum Genet.

      Volume: 61 Pages: 253-261

    • DOI

      doi: 10.1038/jhg.2015.143.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] A Comprehensive Study on the Etiology of Patients Receiving Cochlear Implantation With Special Emphasis on Genetic Epidemiology.2016

    • Author(s)
      Miyagawa M, Nishio SY, Usami S.
    • Journal Title

      Otol Neurotol.

      Volume: 37 Pages: e126-134

    • DOI

      doi: 10.1097/MAO.0000000000000936.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Comprehensive genetic testing with ethnic-specific filtering by allele frequency in a Japanese hearing-loss population.2015

    • Author(s)
      Moteki H, Azaiez H, Booth KT, Shearer AE, Sloan CM, Kolbe DL, Nishio S, Hattori M, Usami S, Smith RJ.
    • Journal Title

      Clin Genet.

      Volume: in press Pages: in press

    • DOI

      doi: 10.1111/cge.12677.

    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Massively parallel DNA sequencing successfully identified seven families with deafness-associated MYO6 mutations: the mutational spectrum and clinical characteristics.2015

    • Author(s)
      Miyagawa M, Nishio SY, Kumakawa K, Usami S.
    • Journal Title

      Ann Otol Rhinol Laryngol.

      Volume: 124 Pages: 148S-157S

    • DOI

      doi: 10.1177/0003489415575055.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Novel mutation in GRXCR1 at DFNB25 lead to progressive hearing loss and dizziness.2015

    • Author(s)
      Mori K, Miyanohara I, Moteki H, Nishio SY, Kurono Y, Usami S.
    • Journal Title

      Ann Otol Rhinol Laryngol.

      Volume: 124 Pages: 129S-134S.

    • DOI

      doi: 10.1177/0003489415575061.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Mutations in LOXHD1 gene cause various types and severities of hearing loss.2015

    • Author(s)
      Mori K, Moteki H, Kobayashi Y, Azaiez H, Booth KT, Nishio SY, Sato H, Smith RJ, Usami S.
    • Journal Title

      Ann Otol Rhinol Laryngol.

      Volume: 124 Pages: 135S-141S

    • DOI

      doi: 10.1177/0003489415574067.

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Mutational spectrum and clinical features of patients with ACTG1 mutations identified by massively parallel DNA sequencing.2015

    • Author(s)
      Miyagawa M, Nishio SY, Ichinose A, Iwasaki S, Murata T, Kitajiri S, Usami S.
    • Journal Title

      Ann Otol Rhinol Laryngol.

      Volume: 124 Pages: 158S-168S.

    • DOI

      doi: 10.1177/0003489415575058.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Novel PTPRQ mutations identified in three congenital hearing loss patients with various types of hearing loss.2015

    • Author(s)
      Sakuma N, Moteki H, Azaiez H, Booth KT, Takahashi M, Arai Y, Shearer AE, Sloan CM, Nishio SY, Kolbe DL, Iwasaki S, Oridate N, Smith RJ, Usami S.
    • Journal Title

      Ann Otol Rhinol Laryngol.

      Volume: 124 Pages: 184S-192S.

    • DOI

      doi: 10.1177/0003489415575041.

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Deafness gene variations in a 1120 nonsyndromic hearing loss cohort: molecular epidemiology and deafness mutation spectrum of patients in Japan.2015

    • Author(s)
      Nishio SY, Usami S.
    • Journal Title

      Ann Otol Rhinol Laryngol.

      Volume: 124 Pages: 49S-60S

    • DOI

      doi: 10.1177/0003489415575059.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Novel mutations in LRTOMT associated with moderate progressive hearing loss in autosomal recessive inheritance.2015

    • Author(s)
      Ichinose A, Moteki H, Hattori M, Nishio SY, Usami S.
    • Journal Title

      Ann Otol Rhinol Laryngol.

      Volume: 124 Pages: 142S-147S

    • DOI

      doi: 10.1177/0003489415575043.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Non-ocular Stickler syndrome with a novel mutation in COL11A2 diagnosed by massively parallel sequencing in Japanese hearing loss patients.2015

    • Author(s)
      Iwasa Y, Moteki H, Hattori M, Sato R, Nishio SY, Takumi Y, Usami S.
    • Journal Title

      Ann Otol Rhinol Laryngol.

      Volume: 124 Pages: 111S-117S

    • DOI

      doi: 10.1177/0003489415575044.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Germinal mosaicism in a family with BO syndrome.2015

    • Author(s)
      Miyagawa M, Nishio SY, Hattori M, Takumi Y, Usami S.
    • Journal Title

      Ann Otol Rhinol Laryngol.

      Volume: 124 Pages: 118S-122S

    • DOI

      doi: 10.1177/0003489415575062.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Detailed hearing and vestibular profiles in the patients with COCH mutations.2015

    • Author(s)
      Tsukada K, Ichinose A, Miyagawa M, Mori K, Hattori M, Nishio SY, Naito Y, Kitajiri S, Usami S.
    • Journal Title

      Ann Otol Rhinol Laryngol.

      Volume: 124 Pages: 100S-110S

    • DOI

      doi: 10.1177/0003489415573074.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] The patients associated with TMPRSS3 mutations are good candidates for electric acoustic stimulation.2015

    • Author(s)
      Miyagawa M, Nishio SY, Sakurai Y, Hattori M, Tsukada K, Moteki H, Kojima H, Usami S.
    • Journal Title

      Ann Otol Rhinol Laryngol.

      Volume: 124 Pages: 193S-204S

    • DOI

      doi: 10.1177/0003489415575056.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Novel ABHD12 mutations in PHARC patients: the differential diagnosis of deaf-blindness.2015

    • Author(s)
      Yoshimura H, Hashimoto T, Murata T, Fukushima K, Sugaya A, Nishio SY, Usami S.
    • Journal Title

      Ann Otol Rhinol Laryngol.

      Volume: 124 Pages: 77S-83S

    • DOI

      doi: 10.1177/0003489415574513.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Clinical application of a custom AmpliSeq library and ion torrent PGM sequencing to comprehensive mutation screening for deafness genes.2015

    • Author(s)
      Nishio SY, Hayashi Y, Watanabe M, Usami S.
    • Journal Title

      Genet Test Mol Biomarkers.

      Volume: 19 Pages: 209-217

    • DOI

      doi: 10.1089/gtmb.2014.0252.

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Massively parallel DNA sequencing for deafness applied to social health insurance-based genetic testing.2016

    • Author(s)
      Usami S.
    • Organizer
      第13回国際人類遺伝学会
    • Place of Presentation
      国立京都国際会館(京都府京都市)
    • Year and Date
      2016-03-06
    • Int'l Joint Research
  • [Presentation] Deafness gene variations in a 1,120 nonsyndromic hearing loss cohort: Molecular epidemiology and deafness mutation spectrum of patients in Japan.2016

    • Author(s)
      Nishio S, Usami S.
    • Organizer
      第13回国際人類遺伝学会
    • Place of Presentation
      国立京都国際会館(京都府京都市)
    • Year and Date
      2016-03-05
    • Int'l Joint Research
  • [Presentation] Benefit of Genetic Testing for Cochlear Implantation Cadidates.2015

    • Author(s)
      Usami SI, Miyagawa M, Nishio SY, Moteki H
    • Organizer
      2015 Annual CORLAS Meeting
    • Place of Presentation
      Palace Hotel, San Francisco USA
    • Year and Date
      2015-08-25
    • Int'l Joint Research
  • [Presentation] 次世代シーケンスの臨床応用~先天性難聴、遺伝性結合組織疾患のパネル解析を中心に~2015

    • Author(s)
      宇佐美真一
    • Organizer
      第39回日本遺伝カウンセリング学術集会
    • Place of Presentation
      三井ガーデンホテル千葉(千葉県千葉市)
    • Year and Date
      2015-06-28
    • Invited
  • [Presentation] 難聴の遺伝子診断とその社会的貢献2015

    • Author(s)
      宇佐美真一
    • Organizer
      第116回日本耳鼻咽喉科学会総会
    • Place of Presentation
      東京国際フォーラム(東京都千代田区)
    • Year and Date
      2015-05-22
    • Invited
  • [Presentation] Importance of Genetic Testing for Cochlear Implantation Candidate2015

    • Author(s)
      Usami S.
    • Organizer
      10th APSCI 2015
    • Place of Presentation
      北京、中国
    • Year and Date
      2015-05-03
    • Int'l Joint Research

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Published: 2017-01-06  

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