Online now: Homeostatic mature dendritic cells instruct fibroblast specialization via Notch2 signaling to establish T cell niches
Specialized fibroblastic reticular cell (FRC) subsets in lymph nodes orchestrate the compartmentalization that guides immune cell migration, interaction, and function. Alouche et al. examine the signals governing FRC differentiation and identify a Notch2-dependent process by which homeostatic mature dendritic cells drive Ccl19hi T-zone fibroblast differentiation, maintain segregation of distinct T-zone niches, and support CD8+ T cell memory formation.