Cell shape sensing licenses dendritic cells for homeostatic migration to lymph nodes

Zahraa Alraies, Claudia A. Rivera, Maria Graciela Delgado, Doriane Sanséau, Mathieu Maurin, Roberto Amadio, Giulia Maria Piperno, Garett Dunsmore, Aline Yatim, Livia Lacerda Mariano, Anna Kniazeva, Vincent Calmettes, Pablo J. Sáez, Alice Williart, Henri Popard, Matthieu Gratia, Olivier Lamiable, Aurélie Moreau, Zoé Fusilier, Lou CresteyBenoit Albaud, Patricia Legoix, Anne S. Dejean, Anne Louise Le Dorze, Hideki Nakano, Donald N. Cook, Toby Lawrence, Nicolas Manel, Federica Benvenuti, Florent Ginhoux, Hélène D. Moreau, Guilherme P. F. Nader, Matthieu Piel, Ana Maria Lennon-Duménil

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Immune cells experience large cell shape changes during environmental patrolling because of the physical constraints that they encounter while migrating through tissues. These cells can adapt to such deformation events using dedicated shape-sensing pathways. However, how shape sensing affects immune cell function is mostly unknown. Here, we identify a shape-sensing mechanism that increases the expression of the chemokine receptor CCR7 and guides dendritic cell migration from peripheral tissues to lymph nodes at steady state. This mechanism relies on the lipid metabolism enzyme cPLA2, requires nuclear envelope tensioning and is finely tuned by the ARP2/3 actin nucleation complex. We also show that this shape-sensing axis reprograms dendritic cell transcription by activating an IKKβ–NF-κB-dependent pathway known to control their tolerogenic potential. These results indicate that cell shape changes experienced by immune cells can define their migratory behavior and immunoregulatory properties and reveal a contribution of the physical properties of tissues to adaptive immunity.

Original languageEnglish
Pages (from-to)1193-1206
Number of pages14
JournalNature Immunology
Volume25
Issue number7
DOIs
Publication statusPublished - 1 Jul 2024
Externally publishedYes

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