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Apoptosis in the epidermis.

Kiyofumi Yamanishi1, Chun-Shen Shen, Hitoshi Mizutani

  • 1Department of Dermatology, Hyogo College of Medicine, Japan.

Methods in Molecular Biology (Clifton, N.J.)
|October 27, 2004
PubMed
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This study details a practical nick-end labeling method to detect DNA fragmentation, a key indicator of apoptosis in keratinocytes during skin's natural keratinization process or due to damage.

Area of Science:

  • Dermatology
  • Cell Biology
  • Biochemistry

Background:

  • Keratinization is a specialized apoptosis forming the skin's stratum corneum.
  • Keratinocyte apoptosis is crucial in normal skin development and in response to stimuli like UVB radiation or genetic defects.
  • Apoptosis involves characteristic cellular changes, including DNA fragmentation.

Purpose of the Study:

  • To describe a practical method for detecting DNA fragmentation in skin specimens.
  • To provide a protocol for assessing apoptosis in keratinocytes using nick-end labeling.
  • To facilitate the study of keratinocyte cell death in various conditions.

Main Methods:

  • The study focuses on the nick-end labeling technique.
  • The protocol is specifically adapted for paraffin-embedded skin sections.

Related Experiment Videos

  • This method allows for the visualization of DNA fragmentation indicative of apoptosis.

    • Main Results:

    • The described nick-end labeling procedure effectively detects DNA fragmentation in skin samples.
    • The technique is valuable for identifying apoptotic keratinocytes in histological sections.
    • This method aids in quantifying or assessing the extent of apoptosis in skin.

    Conclusions:

    • Nick-end labeling is a reliable technique for studying keratinocyte apoptosis.
    • The described protocol provides a practical approach for researchers and clinicians.
    • Understanding keratinocyte apoptosis is vital for skin biology and disease research.