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Related Experiment Videos

Epidermal growth factor receptor immunoreactivity in rat brain. Development and cellular localization.

F Gómez-Pinilla1, D J Knauer, M Nieto-Sampedro

  • 1Department of Psychobiology, University of California, Irvine 92717.

Brain Research
|January 12, 1988
PubMed
Summary

Epidermal growth factor receptor (EGFR) appears in rat brain astroglia and neurons during development. Its distinct localization suggests roles beyond astroglia proliferation, potentially in neuronal survival and neuron-glia signaling.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cell Signaling

Background:

  • Epidermal growth factor receptor (EGFR) plays crucial roles in cell growth and differentiation.
  • Understanding EGFR expression patterns in the developing brain is key to elucidating its functions.

Purpose of the Study:

  • To investigate the spatiotemporal expression of EGFR immunoreactivity (EGFR-IR) in the developing and adult rat brain.
  • To correlate EGFR expression patterns with potential roles in neuronal and glial development.

Main Methods:

  • Immunohistochemistry was used to detect EGFR-IR in rat brain sections at various postnatal ages.
  • Analysis focused on astroglia, Purkinje cells, and cortical neurons.

Main Results:

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  • EGFR-IR emerged in astroglia around postnatal day 16, peaking at day 19, then decreasing in adulthood.
  • EGFR-IR was present in cerebellar Purkinje cells from postnatal day 11 into adulthood.
  • Prominent EGFR immunostaining in adult and aged rats was observed in cerebral cortex neurons (layers IV and V) with basket cell morphology, particularly in motor and sensory areas.

    • Conclusions:

    • The developmental expression pattern of EGFR in astroglia does not strongly support a direct mitogenic role in proliferation.
    • EGFR in the rat brain may be involved in neuronal survival and/or neuron-glia communication.