Angiotensin II induces formation of the early growth response gene-1 protein in rat vascular smooth muscle cells

FEBS Lett. 1992 Nov 23;313(2):109-12. doi: 10.1016/0014-5793(92)81423-j.

Abstract

The effect of angiotensin II (Ang II) on the early growth response gene-1 (Egr-1) mRNA, on the Egr-1 protein and on the phosphoinositide PI turnover signalling system was investigated in the presence and absence of EXP3174, a potent non-peptide Ang II receptor antagonist. Ang II induced an accumulation of 3.4 kb Egr-1 mRNA and the 80 kDa Egr-1 protein, with a maximum at 30 min and 60 min, respectively. EXP3174 blocked the Ang II-induced increase of inositol phosphates, Egr-1 mRNA and the Egr-1 protein, suggesting the involvement of the PI signalling system by the expression of the Egr-1 gene.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Angiotensin II / pharmacology*
  • Animals
  • Cells, Cultured
  • DNA-Binding Proteins / biosynthesis*
  • DNA-Binding Proteins / genetics
  • Early Growth Response Protein 1
  • Female
  • Immediate-Early Proteins*
  • Muscle, Smooth, Vascular / drug effects
  • Muscle, Smooth, Vascular / metabolism*
  • Phosphatidylinositols / metabolism
  • RNA, Messenger / analysis
  • Rats
  • Rats, Inbred WKY
  • Transcription Factors / biosynthesis*
  • Transcription Factors / genetics

Substances

  • DNA-Binding Proteins
  • Early Growth Response Protein 1
  • Egr1 protein, rat
  • Immediate-Early Proteins
  • Phosphatidylinositols
  • RNA, Messenger
  • Transcription Factors
  • Angiotensin II