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

Identification of Transcription Factors Expressed in Pulmonary Epithelium in Response to Oxygen Tension Shift

Research Project

Project/Area Number 08670918
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Pediatrics
Research InstitutionTokyo University of Pharmacy and Life Science

Principal Investigator

TAKAHASHI Yuji  Tokyo University of Pharmacy and Life Science, School of life Science, Associate Professor, 生命科学部, 助教授 (20154875)

Co-Investigator(Kenkyū-buntansha) MIURA Takashi  Tokyo University of Pharmacy and Life Science, School of life Science, Professor, 生命科学部, 教授 (70013323)
TAKAHASHI Shigeru  Tokyo University of Pharmacy and Life Science, School of life Science, Research, 生命科学部, 助手 (10266900)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1997: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1996: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordshypoxia / phosphoglycerate mutase B / differential display / fibroblast / prolyl 4-hydroxylase / rat / fetus
Research Abstract

Molecular oxygen (O2) is essential for aerobic organisms. Exposure of tissues or cells to hypoxia induces a variety of adaptive or pathogenic responses. To understand the mechanism and processes of cellular response to hypoxia, we exposed fetal rat lung fibroblasts to hypoxia (pO2=5Pa) and screened the hypoxia-responsible gene by the differential display method. Exposure of the cells to hypoxia activated the phosphoglycerate mutase B (PGM-B) and prolyl 4-hydroxylase (P4H) alpha gene, resulting in the induction of PGM enzymatic activity, concomitant with elevations of PGM-B mRNA and protein levels. The mRNA level was elevated linearly with decreases in partial O2 pressure, indicating a 2-3 fold increase in these levels after 16 h hypoxia. Up-regulation of PGM mRNA by hypoxia was obvious after 8 h exposure, reached its peak after 16 h, persists for 40 h and returned to the basal level after reoxygenation at 20% O2 for 16 h. Run-on and stability assays indicated that PGM-B expression is regulated mainly at the transcriptional step. These results suggest that the induction of PGM-B may contribute to the regulation of glycolytic flux under reduced O2 tension and play a role in the adaptation of cells to hypoxia.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] Dukes.S.M., Y.Takahashi et al: "Ontogeny of γ-glutamyl transferase in the rat lung" Am.J.Physiol. 272. 739-744 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Takahashi, Y., S.Takahashi et al: "Hypoxia induced expression of phoshoglycerate mutase-B in fibroblast" Eur.J.Biochem.(in press). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Oakes, S.M., Y.Takahashi, M.C.Williams, and M.Joyce-Brady: "Ontogeny of gamma-glutamyl transferase in the rat lung." Am.J.Physiol.272. L739-744 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Takahashi, Y., S.Takahashi, T.Yoshimi, and T.Miura.: "Hypoxia-induced expression of phosphoglucerate mutase B in fibroblasts." Eur.J.Biochem.(In Press). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Takahashi Yuji 他: "Nitrogen dioxide exposure activates α-glutamyltrans・・・" Toxicology & Applied Pharmacology. (in press).

    • Related Report
      1996 Annual Research Report
  • [Publications] Takahashi Yuji 他: "Ontogeny of α-glutamyultransferase in the rat lung" Am.J.Physiol.(in press).

    • Related Report
      1996 Annual Research Report
  • [Publications] Takahashi Yuji 他: "Lncreases in the mRNA of α-glutamyltranse・・・" Biochemical Pharmacol. (in press).

    • Related Report
      1996 Annual Research Report

URL: 

Published: 1996-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi