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ErbB Receptors and Cancer

Zhixiang Wang1

  • 1Signal Transduction Research Group, Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, 835 MSB, 114 St NW, Edmonton, AB, Canada, T6G 2H7. zhixiang.wang@ualberta.ca.

Methods in Molecular Biology (Clifton, N.J.)
|August 10, 2017
PubMed

Insights

The ErbB receptor family, including the epidermal growth factor receptor (EGFR), plays a crucial role in cancer. Dysregulation of these receptors is linked to poor prognosis and resistance, making them key targets for cancer therapies.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Cell Signaling

Background:

  • The ErbB receptor family, also known as the EGF receptor family, comprises EGFR, ErbB2, ErbB3, and ErbB4.
  • EGFR was the first receptor tyrosine kinase (RTK) identified and linked to cancer, making it extensively studied.
  • ErbB receptors activate through dimerization, with ErbB3 having impaired kinase activity and ErbB2 lacking direct ligands, necessitating heterodimerization for activation.

Purpose of the Study:

  • To review the structure, activation mechanisms, and signaling pathways of the ErbB receptor family.
  • To highlight the role of ErbB receptor overexpression and mutation in various cancers.
  • To discuss the therapeutic targeting of ErbB receptors in cancer treatment.

Main Methods:

  • Literature review of ErbB receptor family signaling.
  • Analysis of ErbB receptor involvement in cancer development and progression.
  • Examination of current and emerging therapeutic strategies targeting ErbB receptors.

Main Results:

  • ErbB receptor activation depends on ligand binding, dimerization (homo- and hetero-), and interactions with signaling proteins.
  • Specific signaling pathway outcomes are modulated by regulators, ligands, and receptor dimer composition.
  • Overexpression or mutation of ErbB receptors, particularly EGFR and ErbB2, is common in breast, ovarian, and non-small cell lung cancers.

Conclusions:

  • ErbB receptor dysregulation is associated with adverse cancer outcomes, including metastasis and reduced survival.
  • EGFR and ErbB2 are critical targets for developing effective cancer therapies.
  • Targeting ErbB receptors offers a promising strategy for improving cancer treatment outcomes.
Keywords:
CancerCell signalingEGFRErbB family receptorsErbB2ErbB3ErbB4

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