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Related Experiment Videos

Keratins in the developing olfactory epithelia.

Y Suzuki1, M Takeda

  • 1Department of Oral Anatomy, Higashi Nippon Gakuen University, School of Dentistry, Hokkaido, Japan.

Brain Research. Developmental Brain Research
|April 24, 1991
PubMed
Summary
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Olfactory epithelium development involves specific keratin expression in supporting and basal cells. These keratin changes, identified by antikeratin antibodies, are crucial for cell differentiation and structural integrity during olfactory system maturation.

Area of Science:

  • Cell Biology
  • Developmental Biology
  • Neuroscience

Background:

  • The olfactory epithelium contains supporting cells and basal cells, which undergo differentiation during development.
  • Keratins are intermediate filament proteins essential for epithelial cell structure and function.
  • Understanding keratin expression patterns can elucidate cellular differentiation processes in sensory epithelia.

Purpose of the Study:

  • To investigate the temporal and spatial expression of keratins in the developing olfactory epithelium.
  • To characterize the specific keratins present in supporting cells and basal cells at different developmental stages.
  • To correlate keratin expression with morphological changes in basal cells.

Main Methods:

  • Immunohistochemistry using specific antikeratin antibodies (RGE53, MA902, PKK2, CKB1, KL1).

Related Experiment Videos

  • Analysis of olfactory epithelium at embryonic day 14 and postnatal days 1 and 14.
  • Microscopic examination of cell morphology and filament aggregation.

    • Main Results:

    • Supporting cells at embryonic day 14 expressed 45 and 52.5 kDa keratins.
    • Basal cells at postnatal day 1 expressed 40, 46, 48, 54, and 50 kDa keratins.
    • By postnatal day 14, basal cells showed increased filament bundles and expressed 56 and 52.5 kDa keratins, with shape changes observed.
    • Olfactory cells did not stain for keratins throughout development.

    Conclusions:

    • Distinct keratin profiles characterize supporting and basal cells in the developing olfactory epithelium.
    • Keratin expression patterns change dynamically during basal cell differentiation and maturation.
    • These keratin changes are integral to the structural development and functional specialization of the olfactory epithelium.