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CD10 expression in human adventitial cells

ABSTRACT: The tunica adventitia ensheaths arteries and veins and contains presumptive mesenchymal stem cells (MSCs) involved in vascular remodeling. We show here that a subset of human adventitial cells expresses the CD10/CALLA cell surface metalloprotease. Sorted CD10+ adventitial cells developed promptly in culture into MSCs, exhibiting higher proliferation, clonogenic and osteogenic potentials than CD10- counterparts. CD10+ adventitial cells increased expression of the cell cycle protein CCND2 via ERK1/2 and prompted NELL1 expression via NF-κB. CD10 expression was upregulated in CD10+ adventitial cells through neural secreted protein sonic hedgehog-mediated Gli1 signaling. These results suggest that CD10 expression, which marks rapidly dividing cells in other normal and malignant cell lineages, plays a role in MSC homeostasis in human tissues.

ORGANISM(S): Homo sapiens

PROVIDER: GSE115557 | GEO | 2019/06/11

REPOSITORIES: GEO

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CD10 expression in human adventitial cells

Project description:CD10 expression in human adventitial cells

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Adventitial stromal cells define group 2 innate lymphoid cell tissue niches

Project description:We identify a subset of IL-33 expressing adventitial stromal cells as local regulators of ILC2s Type 2 lymphocytes promote both physiologic tissue remodeling and allergic pathology, yet their physical tissue niches are poorly described. In this study, we used quantitative imaging together with scRNAseq to define tissue niches of group 2 innate lymphoid cells (ILC2s), critical instigators of type 2 immunity. We identified a dominant adventitial cuff niche around lung bronchi and larger vessels in multiple tissues, where ILC2s localized with subsets of dendritic and regulatory T cells. However, ILC2s were most intimately associated with adventitial stromal cells (ASC), a mesenchymal fibroblast-like subset that expressed Interleukin-33 (IL-33) and thymic stromal lymphopoietin (TSLP) and supported ILC2s and tissue-resident Th2 cells.

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