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Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Immunity 2017 ; 46 (3): 504-15 Nephropedia Template TP
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Dendritic cells display subset and tissue-specific maturation dynamics over human life #MMPMID28329707
Granot T; Senda T; Carpenter DJ; Matsuoka N; Weiner J; Gordon CL; Miron M; Kumar B; Griesemer A; Ho SH; Lerner H; Thome JJ; Connors T; Reizis B; Farber DL
Immunity 2017[Mar]; 46 (3): 504-15 PMID28329707show ga
Maturation and migration to lymph nodes (LNs) constitutes a central paradigm in conventional dendritic cell (cDC) biology, but remains poorly defined in humans. Using our organ donor tissue resource, we analyzed cDC subset distribution, maturation and migration in mucosal tissues (lungs, intestines), associated lymph nodes (LNs), and other lymphoid sites from 78 individuals aged <1?93years. The distribution of cDC1 (CD141hiCD13hi) and cDC2 (Sirp-?+CD1c+) subsets was a function of tissue site and conserved between donors. We identified cDC2 as the major mature (HLA-DRhi) subset in LNs with the highest frequency in lung-draining LNs. Mature cDC2 in mucosal-draining LNs expressed tissue-specific markers derived from the paired mucosal site, reflecting their tissue-migratory origin. These distribution and maturation patterns were largely maintained throughout life, with site-specific variations. Our findings provide evidence for localized DC tissue surveillance and reveal a lifelong division of labor between DC subsets, with cDC2 functioning as guardians of the mucosa.