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The role of FGF signal for the maturation of stereocilia in hair cells

Research Project

Project/Area Number 25462638
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Otorhinolaryngology
Research InstitutionKyoto University

Principal Investigator

Kita Tomoko  京都大学, 医学研究科, 特定助教 (20362519)

Co-Investigator(Kenkyū-buntansha) 中川 隆之  京都大学, 医学研究科, 講師 (50335270)
本田 晶  国立研究開発法人理化学研究所, 多細胞システム形成研究センター, 研究員 (50443023)
Raj Ladher (RAJ Ladher)  国立研究開発法人理化学研究所, 多細胞システム形成研究センター, 特別主管研究員 (70392173)
Research Collaborator Sabyasachi Rakshit  Indian Institute of Science Education and Research, Assistant Professor
Project Period (FY) 2013-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords内耳有毛細胞 / 感覚毛 / FGFシグナル / 形成 / 内耳 / FGFR1 / stereocilia
Outline of Final Research Achievements

The aim of this project is to clarify the effect of FGF signal on the morphology of stereocilia and transductional channeln of hair cells. We've reported reported that FGF signal helps not only the ear formation in early embryo stage but also kinocilia formation. FGFR1 exists in the tip of stereocilia temporary (P2-P7 in cochlea organ and P1-P10 in vestibular organ) using lab-made antibody. This was confirmed using the purchased antibody which recognize same region. Sequencing of FGFR1 gene from mouse cochlea sample on that transient stage, we found the new isoform which doesn't contain neither transmembrane nor intracellular domain. Although we tried to produce FGFR1 conditional KO mice, the estimation of these mice because of the variability of KO ratio.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (9 results)

All 2017 2016 2015 2014 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (1 results)

  • [Int'l Joint Research] NCBS/IPC(インド)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Activation of IGF1 Signaling in the Cochlea Induces the Transcription of Its Mediators During the Protection of Cochlear Hair Cells Against Aminoglycoside.2017

    • Author(s)
      Hayashi Y, Yamamoto N, Nakagawa T, Omori K, Ito J.
    • Journal Title

      Otol Neurotol.

      Volume: 38 Issue: 2 Pages: 278-282

    • DOI

      10.1097/mao.0000000000001276

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Netrin 1 mediates protective effects exerted by insulin-like growth factor 1 on cochlear hair cells.2017

    • Author(s)
      Yamahara K, Nakagawa T, Ito J, Kinoshita K, Omori K, Yamamoto N.
    • Journal Title

      Neuropharmacology.

      Volume: 119 Pages: 26-39

    • DOI

      10.1016/j.neuropharm.2017.03.032

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hair cell stereociliary bundle regeneration by espin gene transduction after aminoglycoside damage and hair cell induction by Notch inhibition2016

    • Author(s)
      Taura, A. Taura, K. Koyama, Y. Yamamoto, N. Nakagawa, T. Ito, J. Ryan, A. F.
    • Journal Title

      Gene Ther

      Volume: Online Issue: 5 Pages: 1-9

    • DOI

      10.1038/gt.2016.12

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Early steps in inner ear development: induction and2015

    • Author(s)
      Sai X, Ladher RK.
    • Journal Title

      Front Pharmacol.

      Volume: 6 Pages: 19-19

    • DOI

      10.3389/fphar.2015.00019

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Characterization of the finch embryo supports evolutionary conservation of the naive stage of development in amniotes.2015

    • Author(s)
      Mak SS, Alev C, Nagai H, Wrabel A, Matsuoka Y, Honda A, Sheng G, Ladher RK.
    • Journal Title

      Elife.

      Volume: 4

    • DOI

      10.7554/elife.07178

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression of the heparan sulfate 6-0-endosulfatases, Sulfl and Sulf2, in the avian and mammalian inner earsuggests a role for sulfation during inner ear development.2014

    • Author(s)
      Freeman SD, Keino-Masu K, Masu M, Ladher RK.
    • Journal Title

      Developmental Dynamics

      Volume: 244 Issue: 2 Pages: 168-180

    • DOI

      10.1002/dvdy.24223

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fgfr1-Frs2/3 Signalling Maintains Sensory Progenitors during Inner Ear Hair Cell Formation.2014

    • Author(s)
      Ono K
    • Journal Title

      PLoS Genet

      Volume: 10 Issue: 1 Pages: e1004118-e1004118

    • DOI

      10.1371/journal.pgen.1004118

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] FGFR1 Assembles a Kinocilia-Specific Transport Particle During Inner Ear Hair Cell Specialization2014

    • Author(s)
      Raj Ladher
    • Organizer
      Fibroblast Growth Factors in Development & Disease
    • Place of Presentation
      Ventura, CA
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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