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Cd1d is expressed on dermal dendritic cells and monocyte-derived dendritic cells
G Gerlini1, H P Hefti, M Kleinhans
1Department of Dermatology, University of Zürich Medical School, Zürich, Switzerland.
The Journal of Investigative Dermatology
|September 21, 2001
Summary
Skin dendritic cells express CD1 molecules, including CD1d, crucial for lipid antigen presentation. Culture conditions significantly impact CD1d expression on these cells, affecting potential immunotherapy applications.
Area of Science:
- Immunology
- Dermatology
- Cell Biology
Background:
- CD1 proteins are cell surface molecules essential for presenting lipid antigens to T cells.
- Understanding CD1 expression in skin is vital for investigating immune responses and diseases.
Purpose of the Study:
- To investigate the expression of CD1 molecules, particularly CD1d, on skin dendritic cells and monocyte-derived dendritic cells.
- To analyze the impact of culture conditions on CD1d expression.
Main Methods:
- Immunohistochemical analysis of normal human skin.
- Flow cytometry analysis of epidermal/dermal cell suspensions.
- Western blot analysis of microdissected skin sections.
- Culture of monocyte-derived dendritic cells under different conditions.
Main Results:
- CD1d expression in skin is primarily on dermal dendritic cells, mainly perivascular, with no detectable expression on Langerhans cells.
- Dermal dendritic cells express CD1a, CD1b, CD1c, and CD1d.
- Migrated mature dermal dendritic cells coexpress CD83 and CD1d.
- Monocyte-derived dendritic cells express CD1d when cultured in autologous plasma, but this is downregulated by fetal bovine serum.
Conclusions:
- Skin antigen-presenting cells express diverse CD1 molecules, including CD1d, potentially playing a role in skin diseases.
- Differential CD1 molecule expression based on culture conditions has implications for dendritic cell-based immunotherapy.