Modulation of CD86 expression in skin dendritic cells does not always correlate with changes in DC motility,
Nicolas Bechetoille1, Aurélie Boher, Amandine Gaydon
1BASF Beauty Care Solutions, 32 rue Saint Jean de Dieu, 69007 Lyon, France. nicolas.bechetoille@basf.com
Insights
CD86 expression on dendritic cells (DCs) is a known activation marker. This study found that DC motility and migration are separate from activation, suggesting compounds may modulate immune responses by down-regulating CD86, not affecting cell movement.
Area of Science:
- Immunology
- Cell Biology
Background:
- CD86 is a key activation marker on dendritic cells (DCs).
- Understanding DC function requires correlating activation markers with functional properties like motility and migration.
Purpose of the Study:
- To investigate the relationship between CD86 expression and the motility, migration, and allostimulatory capacity of human monocyte-derived skin DCs.
- To determine if immune response modulation by compounds is linked to CD86 expression or cell motility.
Main Methods:
- Isolation and characterization of monocyte-derived skin dendritic cells.
- Assessment of CD86 expression levels via flow cytometry.
- Analysis of cell motility and migration using live-cell imaging and transwell assays.
- Evaluation of allostimulatory capacity in mixed lymphocyte reactions.
Main Results:
- Motility and migratory abilities of DCs can be independent of their activation status indicated by CD86 expression.
- Down-regulation of CD86 expression by certain compounds correlates with immune response modulation.
- Observed effects on immune response were not primarily driven by changes in DC motility or migration.
Conclusions:
- DC activation, motility, and migration are distinct processes.
- CD86 expression level is a more relevant indicator than motility for certain immune-modulating effects of compounds.
- Targeting CD86 may be a viable strategy for modulating immune responses.
Abstract:
CD86 expression is a well-known activation marker of dendritic cells (DC). In this study, we compared the level of CD86 expression in monocyte-derived skin DC with their motility, migratory abilities and allostimulatory capabilities. We show that motility and migration could be uncoupled from activation and that the immune response-modulating effects of certain compounds may correlate with down-regulation of CD86 expression rather than with effects on motility and migration.
