Frédéric Mourcin, Léa Verdière, David Roulois, Rada Amin, Claire Lamaison, Vonick Sibut, Brice Thamphya, Céline Pangault, Céline Monvoisin, Sarah Huet, Marine Seffals, Sylvain Baulande, Fatima Mechta-Grigoriou, Patricia Legoix, Delphine Rossille, Marion Guirriec, Simon Léonard, Guillaume Cartron, Gilles Salles, Thierry Fest, Karin Tarte
Lymphoid stromal cells (LSCs) are essential organizers of immune responses. We analyzed tonsillar tissue by combining flow cytometry, in situ imaging, RNA sequencing, and functional assays, defining three distinct human LSC subsets. The integrin CD49a designated perivascular stromal cells exhibiting features of local committed LSC precursors and segregated cytokine and chemokine-producing fibroblastic reticular cells (FRCs) supporting B and T cell survival. The follicular dendritic cell transcriptional profile reflected active responses to B cell and non-B cell stimuli...
August 10, 2021: Immunity