Tumor necrosis factor increases the number of epidermal growth factor receptors on human fibroblasts Academic Article uri icon

Overview

MeSH Major

  • Fibroblasts
  • Glycoproteins
  • Receptor, Epidermal Growth Factor

abstract

  • Tumor necrosis factor (TNF) was shown previously to stimulate the growth of human FS-4 fibroblasts. Here we show that human recombinant TNF can increase the binding of epidermal growth factor (EGF) to these cells. Incubation with TNF resulted in a 40-80% increase in the number of EGF-binding sites with no apparent change in receptor binding affinity. The increase in EGF binding was apparent 8-12 h after the addition of TNF. TNF also increased the amount of EGF receptor protein immunoprecipitated from cells labeled with [35S]methionine. Stimulation of EGF receptor protein synthesis was demonstrable 2-4 h following TNF treatment. TNF increased EGF binding with a dose-response relationship similar to that reported earlier for the mitogenic action. Increased expression of EGF receptors, due to enhanced synthesis of the EGF receptor protein, may be functionally related to the mitogenic action of TNF in human fibroblasts.

publication date

  • September 17, 1987

Research

keywords

  • Academic Article

Identity

Language

  • eng

PubMed ID

  • 3546282

Additional Document Info

start page

  • 1950

end page

  • 4

volume

  • 262

number

  • 5