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The cellular response to neuregulins is governed by complex interactions of the erbB receptor family

D J Riese1, T M van Raaij, G D Plowman

  • 1Department of Pathology, Yale University School of Medicine, New Haven, Connecticut 06520-8023, USA.

Molecular and Cellular Biology
|October 1, 1995
PubMed

Insights

Neuregulin beta activates complex signaling patterns in the epidermal growth factor receptor (erbB) family. This study reveals previously unknown interactions, impacting cancer cell survival and proliferation.

Area of Science:

  • Molecular Biology
  • Cell Signaling
  • Cancer Research

Background:

  • Deregulated signaling of the four epidermal growth factor receptor tyrosine kinase family members (erbB family) is linked to human cancers.
  • Analyzing erbB family signaling is challenging due to diverse ligands and extensive interreceptor cross-talk.

Purpose of the Study:

  • To comprehensively analyze the signaling responses of the erbB family to a single peptide agonist, neuregulin beta.
  • To investigate previously undocumented receptor interactions within the erbB family.

Main Methods:

  • Expression of the four human erbB family receptors (singly and in pairwise combinations) in a Ba/F3 pro-B-lymphocyte cell line.
  • Investigation of interactions activated by the epidermal growth factor homology domain of neuregulin beta.
  • Analysis of receptor tyrosine phosphorylation patterns and regulation of cell survival and proliferation.

Main Results:

  • Neuregulin beta induced complex patterns of receptor tyrosine phosphorylation.
  • The peptide modulated Ba/F3 cell survival and proliferation.
  • Several previously undocumented erbB receptor interactions were identified.

Conclusions:

  • Neuregulin beta elicits intricate signaling cascades within the erbB receptor family.
  • These findings highlight novel receptor interactions crucial for understanding cancer development and progression.
  • The study provides a foundational analysis of erbB family responses to a single peptide agonist.

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