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© Research
Publication : Nature immunology

Diversification of human plasmacytoid predendritic cells in response to a single stimulus

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Nature immunology - 04 Dec 2017

Alculumbre SG, Saint-André V, Di Domizio J, Vargas P, Sirven P, Bost P, Maurin M, Maiuri P, Wery M, Roman MS, Savey L, Touzot M, Terrier B, Saadoun D, Conrad C, Gilliet M, Morillon A, Soumelis V

Link to Pubmed [PMID] – 29203862

Nat. Immunol. 2018 Jan;19(1):63-75

Innate immune cells adjust to microbial and inflammatory stimuli through a process termed environmental plasticity, which links a given individual stimulus to a unique activated state. Here, we report that activation of human plasmacytoid predendritic cells (pDCs) with a single microbial or cytokine stimulus triggers cell diversification into three stable subpopulations (P1-P3). P1-pDCs (PD-L1CD80) displayed a plasmacytoid morphology and specialization for type I interferon production. P3-pDCs (PD-L1CD80) adopted a dendritic morphology and adaptive immune functions. P2-pDCs (PD-L1CD80) displayed both innate and adaptive functions. Each subpopulation expressed a specific coding- and long-noncoding-RNA signature and was stable after secondary stimulation. P1-pDCs were detected in samples from patients with lupus or psoriasis. pDC diversification was independent of cell divisions or preexisting heterogeneity within steady-state pDCs but was controlled by a TNF autocrine and/or paracrine communication loop. Our findings reveal a novel mechanism for diversity and division of labor in innate immune cells.

https://www.ncbi.nlm.nih.gov/pubmed/29203862