Virchows Archiv B

, 58:389 | Cite as

Immunophenotypic and cell cycle analysis of lymph node cells from dimethylbenzanthracene-treated mice

  • Gary M. Halliday
  • Lois L. Cavanagh
  • H. Konrad Muller


The chemical carcinogen 7, 12-dimethylbenz(a)anthracene (DMBA) depletes Langerhans cells from murine epidermis. Application of contact sensitizers to DMBA-treated skin induces specific immunological tolerance due to a DMBA-resistant epidermal antigen presenting cell (APC) migrating to local lymph nodes where it presents antigen in a way which activates suppressor cells. As alterations in local lymph node lymphocytes may enhance the ability of the DMBA-resistant APC to activate suppressor cells, these cells were examined in DMBA-treated mice. Lymph nodes in DMBA-treated mice had normal morphology but were larger and contained increased numbers of lymphocytes. Cell cycle analysis revealed that these lymphocytes did not arise from division within the lymph node, suggesting alterations in homing properties of lymphocytes. Contact sensitizer applied to DMBA-treated skin did not increase lymphocyte division, possibly due to suppressor cell inhibition of the development of effector lymphocytes. DMBA treatment had no effect on B cells or Ia expression, but decreased levels of the T lymphocyte cell surface molecule Thy-1, and increased L3T4 and Lyt-2 as quantitated by flow cytofluorimetry. These changes could influence the development of immune responses as these T cell molecules are receptors involved in lymphocyte interactions.

Key words

Chemical carcinogenesis Tumour immunology Cellular immunity Lymph nodes Suppressor lymphocytes 


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Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • Gary M. Halliday
    • 1
  • Lois L. Cavanagh
    • 1
  • H. Konrad Muller
    • 2
  1. 1.Department of Medicine (Dermatology)University of SydneyNew South WalesAustralia
  2. 2.Department of PathologyUniversity of TasmaniaTasmaniaAustralia

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