• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Involvement of functional RNA and epigenetic regulation in the specific function of corneal epithelium

Research Project

Project/Area Number 19592033
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Ophthalmology
Research InstitutionKyoto Prefectural University of Medicine

Principal Investigator

KAWASAKI Satoshi  Kyoto Prefectural University of Medicine, 医学研究科, 助教 (60347458)

Co-Investigator(Kenkyū-buntansha) 松田 彰  京都府立医科大学, 医学研究科, 助教 (00312348)
Co-Investigator(Renkei-kenkyūsha) MATSUDA Akira  現順天堂大学, 医学部・医学学研究科, 准教授 (00312348)
Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2008: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2007: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
KeywordsmiRNA、エピジェネティクス / メチル化 / 機能的RNA / 角膜上皮細胞 / miR-21 / PI3K / Aktシグナル / miRNA / エピジェネティクス
Research Abstract

角膜上皮細胞は角膜組織の無血管性等の特異的な機能に大きく関与していると考えられている。今回この角膜上皮細胞における機能的RNA、特にmiRNAの発現について検討した。また多くのコーディングRNAのゲノムレベルでの制御にゲノムメチル化が関与していることが報告されているが、角膜上皮細胞特異的マーカーであるケラチン12遺伝子のゲノムメチル化状態についても検討した。結果として角膜上皮細胞のセルラインではmiR-21がもっとも多く発現していることが明らかとなった。また正常角膜上皮細胞と比較するとHCE-T細胞では約7倍ほどmiR-21の発現が亢進していることが明らかとなった。またmiR-21をノックダウンすると若干ながらHCE-Tの細胞増殖が低下することがわかった。さらに阻害剤をもちいてHCE-TにおけるmiR-21の発現がPI3Kおよびp38のシグナルによって負に制御されていることがわかった。またリポーターアッセイによってHCE-TにおけるmiR-21の発現制御を検討したところ、HCE-T細胞の定常状態におけるmiR-21の転写活性はpri-miR-21の転写開始点上流800塩基から1000の間の領域で正に制御され、0から+500塩基の領域によって負に制御されていることがわかった。
レーザーマイクロキャプチャーを用いて角膜上皮の各領域からゲノムDNA10ngを採取して角膜上皮細胞において最も特異的に発現している分子であるケラチン12遺伝子のゲノムメチル化状態を検討した。結果として、輪部基底のケラチン12陰性の角膜上皮ではケラチン12遺伝子のメチル化率は高いことが明らかとなった。

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (17 results)

All 2009 2008 2007

All Journal Article (9 results) (of which Peer Reviewed: 2 results) Presentation (8 results)

  • [Journal Article] Genomic Aberrations and Cellular Heterogeneity in SV40-Immortalized Human Corneal Epithelial Cells2009

    • Author(s)
      Yamasaki K, et al
    • Journal Title

      Invest Ophthalmol Vis Sci 50

      Pages: 604-613

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hyperexpression of the high-affinity IgE receptor-{beta} chain in chronic allergic keratoconjunctivitis.2009

    • Author(s)
      Matsuda A., et al
    • Journal Title

      Invest Ophthalmol Vis Sci. (In press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ophthalmology2008

    • Author(s)
      Koizumi, N., Suzuki, T., Uno, T., Chihara, H., Shiraishi, A., Hara, Y., Inatomi, T., Sotozono, C., Kawasaki, S., Yamasaki, K., Mochida, C., Ohashi, Y., and Kinoshita, S.
    • Journal Title

      e293 155

      Pages: 292-297

    • Related Report
      2008 Final Research Report
  • [Journal Article] Br J Ophthalmol2008

    • Author(s)
      Kojima, K., Ueta, M., Hamuro, J., Hozono, Y., Kawasaki, S., Yokoi, N., and Kinoshita, S.
    • Journal Title

      92

      Pages: 411-416

    • Related Report
      2008 Final Research Report
  • [Journal Article] Biomaterials2008

    • Author(s)
      Pratoomsoot, C., Tanioka, H., Hori, K., Kawasaki, S., Kinoshita, S., Tighe, P. J., Dua, H., Shakesheff, K. M., and Rose, F. R.
    • Journal Title

      29

      Pages: 272-281

    • Related Report
      2008 Final Research Report
  • [Journal Article] Invest Ophthalmol Vis Sci2008

    • Author(s)
      Yamasaki, K., Kawasaki, S., Young, R. D., Fukuoka, H., Tanioka, H., Nakatsukasa, M., Quantock, A. J., and Kinoshita, S.
    • Related Report
      2008 Final Research Report
  • [Journal Article] Graefes Arch Clin Exp Ophthalmol2007

    • Author(s)
      Ban, Y., Yoshida, Y., Kawasaki, S., and Mochida, C.
    • Journal Title

      245

      Pages: 1581-1583

    • Related Report
      2008 Final Research Report
  • [Journal Article] Graefes Arch Clin Exp Ophthalmol2007

    • Author(s)
      Koizumi, N., Rigby, H., Fullwood, N. J., Kawasaki, S., Tanioka, H., Koizumi, K., Kociok, N., Joussen, A. M., and Kinoshita, S.
    • Journal Title

      245

      Pages: 123-134

    • Related Report
      2008 Final Research Report
  • [Journal Article] J Cataract Refract Surg2007

    • Author(s)
      Tanioka, H., Hieda, O., Kawasaki, S., Nakai, Y., and Kinoshita, S.
    • Journal Title

      33

      Pages: 1195-1200

    • Related Report
      2008 Final Research Report
  • [Presentation] Genomic Aberration and Heterogeneity in SV40 Immortalized Human Corneal Epithelial Cells2008

    • Author(s)
      Kawasaki S., et al
    • Organizer
      Association for Research in Vision and Ophthalmology
    • Place of Presentation
      Fort Lauderdale, Florida
    • Year and Date
      2008-04-30
    • Related Report
      2008 Annual Research Report
  • [Presentation] The effects of tenascin-C for beta-catenin signals in corneal epithelial cells2007

    • Author(s)
      Matsuda A, Kusakabe M, Kawasaki S, Sekiyama E, Hamuro J
    • Organizer
      Kinoshita S 2007 Annual Meeting of the Association for Research in Vision and Ophthalmology
    • Place of Presentation
      Fort Lauderdale, Florida, U.S.A.
    • Related Report
      2008 Final Research Report
  • [Presentation] Epigenetic Regulation of Keratin 12 Gene Expression2007

    • Author(s)
      Kawasaki S, Yamasaki K, Tanioka H, Nakamura T, Fukuoka H, Araki B, Yokoi N, Kinoshita S
    • Organizer
      2007 Annual Meeting of the Association for Research in Vision and Ophthalmology
    • Place of Presentation
      Fort Lauderdale, Florida, U.S.A.
    • Related Report
      2008 Final Research Report
  • [Presentation] Novel Mutations in the M1S1 Gene Associated With Gelatinous Drop-like Corneal Dystrophy in Japan hursday2007

    • Author(s)
      Nakatsukasa M, Kawasaki S, Yamasaki K, Ogita R, Mochida C, Takaoka M, Inatomi T, Sotozono C, Kinoshita S
    • Organizer
      2007 Annual Meeting of the Association for Research in Vision and Ophthalmology
    • Place of Presentation
      Fort Lauderdale, Florida, U.S.A.
    • Related Report
      2008 Final Research Report
  • [Presentation] Cytokeratin Expression Pattern of Limbal Dermoid2007

    • Author(s)
      Fukuoka H, Kawasaki S, Tanioka H, Yamasaki K, Inatomi T, Sotozono C, Araki B, Yokoi N, Kinoshita S.
    • Organizer
      2007 Annual Meeting of the Association for Research in Vision and Ophthalmology
    • Place of Presentation
      Fort Lauderdale, Florida, U.S.A.
    • Related Report
      2008 Final Research Report
  • [Presentation] Assessment of Epithelial Integrity and Cell Viability in Epithelial Flaps Prepared With Epi-Keratomes2007

    • Author(s)
      Tanioka H, Hieda O, Kawasaki S, Nakai Y, Nakatsukasa M, Kinoshita S
    • Organizer
      2007 Annual Meeting of the Association for Research in Vision and Ophthalmology
    • Place of Presentation
      Fort Lauderdale, Florida, U.S.A.
    • Related Report
      2008 Final Research Report
  • [Presentation] Depth-Dependant Collagen Fibrillar Architecture in Human Eye Bank Corneas Ascertained by Microfocus Synchrotron X-Ray Diffraction2007

    • Author(s)
      Quantock A. J., Boote C., Young R. D., Hayes S., Tanioka H, Kawasaki S, Ohta N, Yagi N, Kinoshita S, Meek K. M.
    • Organizer
      2007 Annual Meeting of the Association for Research in Vision and Ophthalmology
    • Place of Presentation
      Fort Lauderdale, Florida, U.S.A.
    • Related Report
      2008 Final Research Report
  • [Presentation] Involvement of epigenetic regulation in keratin 12 gene expression2007

    • Author(s)
      Kawasaki S
    • Organizer
      1<st> Korea-Japan Cornea Joint Conference
    • Place of Presentation
      Kyoto, Japan
    • Related Report
      2008 Final Research Report

URL: 

Published: 2007-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi