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Inhibition of proliferative vitreo retinopathy by controling the related transcription factors.

Research Project

Project/Area Number 09671797
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Ophthalmology
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

TAKAHASHI Masayo  Kyoto University, Graduate School of Medicine, Assistant Professor, 医学研究科, 助手 (80252443)

Co-Investigator(Kenkyū-buntansha) MANDAI Michiko  Kyoto University, Graduate School of Medicine, Assistant Professor, 医学研究科, 助手 (80263086)
HONDA Yoshihito  Kyoto University, Graduate School of Medicine, Professor, 医学研究科, 教授 (90026930)
谷原 秀信  京都大学, 医学研究科, 講師 (60217148)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1998: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1997: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsPVR / NF_<kappa>B / E2F / gene transfer / NFkBデコイ / 網膜芽細胞腫 / 変異型Rb遺伝子導入 / 遺伝子治療 / NFkB転写因子
Research Abstract

Purpose. Previous studies suggested that proliferation and migration of retinal pigment epithelial cells are deeply involved in pathogenesis of proliferative vitreo retinopathy (PVR). Recently it is reported that decoys, double-stranded phosphorothioate oligonucleotides, have the same sequence of binding site of transcription factors. In this study we tested the effect of E2F decoys and NFkappaB decoys in the proliferation of cultured human retinal pigment epithelial (RPE) cells and in vivo animal model of PVR.Methods. HVJ cationic liposomes were prepared by replacing phosphatidylserine of HVJ liposomes (Hangai, et al, 1996) to DC cholesterol. Results. It was shown that E2F decoys highly combined to nuclear extracts from human fibroblast cells and NFkappaB decoys also combined to nuclear extracts from human RPE cells stimulated by interleukin 1beta (IL-1beta). RT-PCR indicated that E2F decoys introduced into human fibroblast decreased expression of important factor that is regulating cell cycle, it showed that NFkappaB decoys introduced into human RPE cells reduced transcripts of IL-1beta in IL-1beta stimulated RPE cells. BrdU labeling index and DNA synthesis (H-thymidine uptake) clarified that cell proliferation was highly inhibited with E2F decoys. Cells on culture dishes with NFkappaB decoys were significantly inhibited cell migrations compared with scrambled decoys. In vivo experiment NFkappaB decoys, transferred by HVJ cationic liposomes into human cultured fibroblast, were injected in the vitreous cavity of rabbit PVR model. The appearances of rabbit PVR were scored by a classification of Blumenkraz et al. The incidences of PVR were not significantly different between with NFkappaB decoys and with scrambled decoys. Conclusions. These results suggest that E2F decoys and NFkappaB decoys have the potential to treat proliferative vitreoretinopathy in vitro and it is needed more study to vitro use.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] Akimoto,: "Growth inhibition of cultured human Tenon's fibroblastic cells by targeting the E2F transcription Factor." Exp. Eye Res.67. 395-401 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Akimoto, M: "Adenovirally expressed basic fibroblast growth factor rescues photoreceptor cells in RCS rats." Invest Ophthalmol Vis Sci. 40. 273-9 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M Akimoto: "Growth inhibition of cultured human Tenon's fibroblastic cells by targeting the E2F transcription Factor." Exp.Eye Res. 67. 395-401 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M Akimoto: "Adenovirally expressed basic fibroblast growth factor rescues photoreceptor cells in RCS rats." Invest Ophthalmol Vis Sci. 40. 273-9 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Okazaki: "Facilitated introduction of dna and oligonucleotides into primate trabecular meshwork cells by HVJ liposome" Invest Ophthalmol Vis Sci. 39 (4). S30 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Akimoto: "Adenovirally expressed bFGF rescues photoreceptor cell death in RCS rat." Invest Ophthalmol Vis Sci. 39 (4). S720 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Akimoto M: "Adenovirally expressed basic fibroblast growth factor rescues photoreceptor cells in RCS rats." Invest Ophthalmol Vis Sci. 40 (2). 273-9 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Okazaki: "A novel method for inhibiting proliferation of human RPE cells by supressing NFkB a transcription factor for cytokines" Invest Ophthalmolo Vis Sci. 38. S1133 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M Akimoto:"Inhibition of human Tenon's fibroblastic cell proliferation in vitro using synthetic oligonucleotides containing E2F cis element" :Invest Ophthalmolo Vis Sci:. 38. S1133 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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