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Related Experiment Videos

T-cell receptor V beta expression in normal human skin

D A Dunn1, A S Gadenne, S Simha

  • 1Massachusetts General Hospital-Harvard Cutaneous Biology Research Center, Department of Dermatology, Charlestown 02129.

Proceedings of the National Academy of Sciences of the United States of America
|February 15, 1993
PubMed
Summary
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The T-cell receptor (TCR) repertoire in skin lymphocytes differs from peripheral blood, indicating it

Area of Science:

  • Immunology
  • Dermatology
  • Molecular Biology

Background:

  • The skin immune system defends against pathogens while tolerating self-antigens and commensal microbes.
  • The skin's microenvironment may shape the T-cell receptor (TCR) repertoire of resident lymphocytes.

Purpose of the Study:

  • To investigate the expression of T-cell receptor (TCR) beta-chain variable region (V beta) genes in normal human skin.
  • To compare the TCR repertoire in skin lymphocytes with that of peripheral blood mononuclear cells.

Main Methods:

  • Utilized a polymerase chain reaction-based comparative method to analyze V beta gene expression.
  • Compared V beta gene amplification patterns between normal skin biopsies and peripheral blood samples.

Main Results:

Related Experiment Videos

  • Specific TCR V beta genes (V beta 1, -7, -14, -16) showed higher expression in skin compared to peripheral blood.
  • TCR V beta 5.1 was preferentially expressed in peripheral blood mononuclear cells and not significantly detected in skin.

Conclusions:

  • The TCR repertoire in skin lymphocytes is not a random subset of peripheral blood lymphocytes.
  • Skin lymphocyte TCR repertoire is likely influenced by local skin microenvironmental factors, including self-antigens and microbial flora.