Relationship between epidermal growth factor and its receptor in human benign prostatic hyperplasia

C. Lubrano, V. Toscano, E. Petrangeli, G. Spera, M. C. Trotta, N. Rombola, L. Frati, F. Di Silverio, F. Sciarra

Research output: Contribution to journalArticlepeer-review

Abstract

Human benign prostatic hyperlasia (BPH) samples were analyzed to evaluate the presence of immunoreactive epidermal growth factor (irEGF) and EGF receptor (EGFR). In all BPH samples examined both peptide and its receptor were present. Scatchard analysis of binding data of [125I]EGF showed two classes of binding sites with high and low affinity. Intratissular irEGF concentrations showed a significant inverse linear correlation with EGFR levels. Two groups of samples can be identified: the first showing high irEGF concentrations and low levels of EGF binding sites; the second low irEGF and high concentrations of EGFR. The simultaneous presence of EGF and its receptor in BPH samples indicates that this growth factor may act in an autocrine/paracrine manner in human prostatic tissue. The inverse relationship between EGF and the two sites of EGFR lead one to hypothesize that EGF itself could play a central role in determining receptor cell surface availability.

Original languageEnglish
Pages (from-to)463-468
Number of pages6
JournalJournal of Steroid Biochemistry and Molecular Biology
Volume46
Issue number4
DOIs
Publication statusPublished - 1993

ASJC Scopus subject areas

  • Biochemistry
  • Endocrinology

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