Expression of high- and low-affinity epidermal growth factor receptors in human hepatoma cell lines

Massimo Clementi, Antonella Festa, Ivano Testa, Patrizia Bagnarelli, Giulia Devescovi, Guido Carloni

Research output: Contribution to journalArticlepeer-review

Abstract

Data are presented from a comparative research on expression of epidermal growth factor (EGF) receptors and response to EGF of six independently established cell lines derived from human hepatoma. These lines differ in terms of the degree of differentiation, presence of hepatitis B virus (HBV) DNA copies in integrated form and expression of HBV genes. Our results indicate differential expression of membrane EGF receptors and differential response to EGF under serum- and hormone-free culture conditions. Furthermore, a significant difference in affinity could be detected between EGF receptors of the two highly dedifferentiated cell lines (HA22T/VGH and Li7A) whose replication is inhibited by EGF concentrations capable of stimulating more differentiated phenotypes.

Original languageEnglish
Pages (from-to)297-301
Number of pages5
JournalFEBS Letters
Volume249
Issue number2
DOIs
Publication statusPublished - Jun 5 1989

Keywords

  • (Human hepatoma cell)
  • Cell replication
  • Epidermal growth factor receptor

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Molecular Biology

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