A cellular and spatial map of salivary glands at single cell resolution reveals the functional basis of tertiary lymphoid structure formation in Sjogren's syndrome
Nayar, S.; Turner, J. D.; Asam, S.; Fennell, E.; Pugh, M.; Colafrancesco, S.; Berardicurti, O.; Smith, C. G.; Flint, J.; Teodosio, A.; Iannizzotto, V.; Gardner, D. G.; Roon, J. v.; Korsunsky, I.; Roche Fibroblast Network Consortium, ; Bowman, S. J.; Ng, W.-F.; Croft, A. P.; Filer, A.; Fisher, B. A.; Buckley, C. D.; Barone, F.
Show abstract
The key role of tertiary lymphoid structures in autoimmune and non-autoimmune conditions has been recently appreciated. While many of the molecular mechanisms involved in tertiary lymphoid structure (TLS) formation have been identified, their cellular sources and their temporal and spatial relationship to each other during the development of TLS remain unknown. Here we have constructed a cellular and functional map of key components involved in the formation of TLS in the minor salivary glands (SG) in humans. We have confirmed the presence of an immunofibroblast cell state and identified an undescribed immunopericyte cell state with potential immunological functions within TLS. The identification of TLS cellular and functional properties and their relevant modulators provided by this analysis provides key therapeutic cues for TLS associated conditions in autoimmunity and cancer.
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