RAS BiologyБиохимия Biochemistry

  • ISSN (Print) 0320-9725
  • ISSN (Online) 3034-5294

FOS PROMOTER IS OVERACTIVE OUTSIDE OF GENOME CONTEXT AND WEAKLY REGULATED BY CHANGES IN THE Na+i/K+i RATIO

PII
S30345294S0320972525050037-1
DOI
10.7868/S3034529425050037
Publication type
Article
Status
Published
Authors
Volume/ Edition
Volume 90 / Issue number 5
Pages
627-635
Abstract
Changes in the Na+ and K+ intracellular concentrations affect expression of the FOS gene. Here, we obtained a genetic construct coding for the TurboGFP-dest1 protein under control of the human FOS promoter (-549 to +155) and studied its expression in HEK293T cells exposed to monovalent metal cations. Amplification of the FOS promoter sequence from genomic DNA was efficient only in the presence of Li+ ions. Incubation of cells with ouabain or in a medium containing Li+ ions instead of Na+ ions caused intracellular accumulation of Na+ and Li+ ions, respectively. In addition, both stimuli increased the levels of endogenous FOS mRNA and the average fluorescence intensity of TurboGFP-dest1 in transfected cells. The mRNA levels of TurboGFP-dest1 were significantly higher than the FOS mRNA levels and were little affected by the stimuli.
Keywords
литий натрий уабаин FOS транскрипция
Date of publication
04.02.2026
Year of publication
2026
Number of purchasers
0
Views
90

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