Related Experiment Video
Updated: Aug 8, 2026
Real-time Imaging of Leukotriene B4 Mediated Cell Migration and BLT1 Interactions with β-arrestin
Published on: December 23, 2010
Interleukin 1 beta and the stimulation of Langerhans cell migration: comparisons with tumour necrosis factor alpha
M Cumberbatch1, R J Dearman, I Kimber
1Zeneca Central Toxicology Laboratory, Macclesfield, Cheshire, UK.
Insights
Interleukin 1 beta (IL-1 beta) and tumor necrosis factor alpha (TNF-alpha) both stimulate epidermal Langerhans cell (LC) migration and dendritic cell (DC) accumulation in lymph nodes. While TNF-alpha acts faster, IL-1 beta induces more persistent changes in LC frequency.
Area of Science:
- Immunology
- Dermatology
- Cell Biology
Background:
- Epidermal Langerhans cells (LC) are crucial for skin immune function and initiate contact sensitization by migrating to lymph nodes.
- Tumor necrosis factor alpha (TNF-alpha), a keratinocyte-derived cytokine, is known to signal LC migration.
- Interleukin 1 beta (IL-1 beta) is exclusively produced by LC in murine epidermis.
Purpose of the Study:
- To investigate the influence of IL-1 beta on LC migration, morphology, and dendritic cell (DC) accumulation in the skin.
- To compare the effects of IL-1 beta with those of TNF-alpha on these parameters.
Main Methods:
- Intradermal administration of IL-1 beta and TNF-alpha in murine models.
- Quantification of epidermal LC frequency.
- Assessment of DC arrival in draining lymph nodes.
- Analysis of LC morphology and Ia molecule expression.
Main Results:
- Both IL-1 beta and TNF-alpha significantly reduced epidermal LC frequency and DC accumulation in lymph nodes.
- TNF-alpha induced faster changes in LC frequency and DC accumulation compared to IL-1 beta.
- IL-1 beta treatment resulted in a more persistent reduction in epidermal LC frequency.
- Both cytokines promoted LC activation, evidenced by increased dendritic morphology and Ia molecule expression.
Conclusions:
- IL-1 beta and TNF-alpha are both potent stimulators of epidermal LC migration.
- While both cytokines induce LC activation and lymph node accumulation of DCs, their temporal effects and persistence differ.
- These findings highlight distinct yet overlapping roles for IL-1 beta and TNF-alpha in regulating cutaneous immune responses.
Abstract:
Epidermal Langerhans cells (LC) and the cells into which they mature are believed to play a pivotal role in cutaneous immune function. The induction phase of contact sensitization is associated with the migration of LC from the skin and their accumulation as dendritic cells (DC) in lymph nodes draining the site of exposure. We have demonstrated previously that tumour necrosis factor alpha (TNF-alpha), an epidermal cytokine produced by keratinocytes, provides one signal for LC migration. We describe here experiments designed to evaluate the influence of interleukin 1 beta (IL-1 beta), a product exclusively of LC in murine epidermis, on LC migration, LC morphology and DC accumulation, and to compare the effects of this cytokine with those of TNF-alpha. Both cytokines induced a significant reduction in the frequency of epidermal LC and the arrival of DC in draining lymph nodes. Changes in both parameters were induced more rapidly following intradermal administration of TNF-alpha than were observed after treatment with IL-1 beta. However, the reduction in LC frequency was more persistent with IL-1 beta. Both cytokines caused the activation of LC, characterized by the acquisition of a more dendritic morphology and the increased expression of Ia molecules. These results demonstrate that IL-1 beta and TNF-alpha can each stimulate the migration of epidermal LC, but that the changes induced by these cytokines are not identical.
