Interferon priming is essential for human CD34+ cell-derived plasmacytoid dendritic cell maturation and function.

Interferon priming is essential for human CD34+ cell-derived plasmacytoid dendritic cell maturation and function.
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DOI:
10.1038/s41467-018-05816-y
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发表时间:
2018-08-30
影响因子:
16.6
通讯作者:
Jakobsen MR
Jakobsen MR
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Laustsen A;Bak RO;Krapp C;Kjær L;Egedahl JH;Petersen CC;Pillai S;Tang HQ;Uldbjerg N;Porteus M;Roan NR;Nyegaard M;Denton PW;Jakobsen MR

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Plasmacytoid dendritic cells (pDC) are essential for immune competence. Here we show that pDC precursor differentiated from human CD34+ hematopoietic stem and progenitor cells (HSPC) has low surface expression of pDC markers, and has limited induction of type I interferon (IFN) and IL-6 upon TLR7 and TLR9 agonists treatment; by contrast, cGAS or RIG-I agonists-mediated activation is not altered. Importantly, after priming with type I and II IFN, these precursor pDCs attain a phenotype and functional activity similar to that of peripheral blood-derived pDCs. Data from CRISPR/Cas9-mediated genome editing of HSPCs further show that HSPC-pDCs with genetic modifications can be obtained, and that expression of the IFN-α receptor is essential for the optimal function, but dispensable for the differentiation, of HSPC-pDC percursor. Our results thus demonstrate the biological effects of IFNs for regulating pDC function, and provide the means of generating of gene-modified human pDCs. Plasmacytoid dendritic cells (pDC) are an important regulator of immune responses. Here the authors show that pDC precursors, similar to peripheral blood-derived pDCs, can be differentiated from human CD34+ hematopoietic stem and progenitor cells, with type I/II IFN priming being required for their functional maturation and differentiation.
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