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Adhesion molecule expression by epidermal Langerhans cells and lymph node dendritic cells: a comparison
M Cumberbatch1, R J Dearman, I Kimber
1Zeneca Central Toxicology Laboratory, Macclesfield, Cheshire, UK.
Archives of Dermatological Research
|November 1, 1996
Summary
Epidermal Langerhans cells (LC) change adhesion molecule expression during migration to lymph nodes. E-cadherin decreases while ICAM-1 increases, impacting immune responses.
Area of Science:
- Immunology
- Dermatology
- Cell Biology
Background:
- Langerhans cells (LC) are crucial for skin immunity and antigen transport to lymph nodes.
- LC undergo phenotypic changes during migration, affecting their immune functions.
- Adhesion molecules on LC regulate interactions with tissues and T cells.
Purpose of the Study:
- To investigate changes in E-cadherin, ICAM-1, and CD44 expression on migrating LC.
- To understand the role of these adhesion molecules in LC functional maturation.
Main Methods:
- Immunocytochemistry and flow cytometry were used to analyze adhesion molecule expression.
- Expression levels were examined on LC in the skin and mature dendritic cells in lymph nodes.
Main Results:
- LC migration was linked to a significant decrease in E-cadherin expression.
- A parallel increase in intercellular adhesion molecule-1 (ICAM-1) expression was observed.
- No detectable changes in CD44 expression were found on migrating LC.
Conclusions:
- Altered E-cadherin and ICAM-1 expression are key events in LC migration and maturation.
- These changes likely influence LC interactions and their capacity for antigen presentation.
- The findings provide insights into the dynamic regulation of LC during cutaneous immune responses.