Abstract
Migration of leukocytes from the skin to lymph nodes (LNs) via afferent lymphatic vessels (LVs) is pivotal for adaptive immune responses1,2. Circadian rhythms have emerged as important regulators of leukocyte trafficking to LNs via the blood3,4. Here, we demonstrate that dendritic cells (DCs) have a circadian migration pattern into LVs, which peaks during the rest phase in mice. This migration pattern is determined by rhythmic gradients in the expression of the chemokine CCL21 and of adhesion molecules in both mice and humans. Chronopharmacological targeting of the involved factors abrogates circadian migration of DCs. We identify cell-intrinsic circadian oscillations in skin lymphatic endothelial cells (LECs) and DCs that cogovern these rhythms, as their genetic disruption in either cell type ablates circadian trafficking. These observations indicate that circadian clocks control the infiltration of DCs into skin lymphatics, a process that is essential for many adaptive immune responses and relevant for vaccination and immunotherapies.
| Original language | English |
|---|---|
| Journal | Nature Immunology |
| Volume | 22 |
| Issue number | 11 |
| Pages (from-to) | 1375-1381 |
| Number of pages | 7 |
| ISSN | 1529-2908 |
| DOIs | |
| Publication status | Published - 11.2021 |
Funding
This study received support from the European Research Council (Starting grant 635872, CIRCODE to C.S.), the Deutsche Forschungsgemeinschaft (DFG; German Research Foundation) (Emmy-Noether grant SCHE 1645/2-1 and SFB914 projects B09 and Z03 to C.S.), the Swiss National Science Foundation (SNF 310030_182417/1 to C.S.), the Novartis foundation (20A019 to C.S.) and the International Max Planck Research School for Molecular Life Sciences (IMPRS-LS to C.S.). F.S. was supported by an SGED/ SSED Young Investigator grant. Work in the laboratory of C.D. was supported by a Swiss National Science Foundation grant (310030_184708/1), the Vontobel Foundation, the Novartis Consumer Health Foundation, Swiss Life Foundation, the EFSD/Novo Nordisk Program for Diabetes Research in Europe, the Leenaards Foundation, the Olga Mayenfisch Foundation and Fondation pour l’innovation sur le cancer et la biologie. D.V. received support from the DFG (SFB1009, project A1). C.H. gratefully acknowledges financial support from the Swiss National Science Foundation (310030_182528). H.O. received support from the DFG (OS353-7/1 and OS353-10/1). J.R. received support from the Peter Hans Hofschneider Professorship of the Stiftung Experimentelle Biomedizin, the DFG (grant SFB914, project A12) and the LMU Institutional Strategy LMU-Excellent within the framework of the German Excellence Initiative. We thank the Ludwig-Maximilian University flow cytometry core facility, especially L. Richter and the University of Geneva flow cytometry core facility for their services as well as the core facility for animal models (CAM) of the BMC and the animal facility in Geneva. We thank J. Arasa Aparici for helping us set up the GM-CSF hybridoma culture, V. Petrenko for providing BM from Bmal1–/– animals and J. Ripperger and U. Albrecht for providing BM from Per1–/–/Per2–/– mice.
Research Areas and Centers
- Academic Focus: Center for Infection and Inflammation Research (ZIEL)
- Centers: Center for Research on Inflammation of the Skin (CRIS)
- Academic Focus: Center for Brain, Behavior and Metabolism (CBBM)
DFG Research Classification Scheme
- 2.22-17 Endocrinology, Diabetology, Metabolism
- 2.22-19 Dermatology
- 2.21-05 Immunology