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CD1c-Expression by Monocytes - Implications for the Use of Commercial CD1c+ Dendritic Cell Isolation Kits.

Schrøder, Martine; Melum, Guro Reinholt; Landsverk, Ole J B; Bujko, Anna; Yaqub, Sheraz; Gran, Einar; Aamodt, Henrik; Bækkevold, Espen S; Jahnsen, Frode L; Richter, Lisa.
PLoS One; 11(6): e0157387, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27311059
Conventional dendritic cells (cDCs) comprise a heterogeneous population of cells that are important regulators of immunity and homeostasis. CD1c+ cDCs are present in human blood and tissues, and found to efficiently activate naïve CD4+ T cells. While CD1c is thought to specifically identify this subset of human cDCs, we show here that also classical and intermediate monocytes express CD1c. Accordingly, the commercial CD1c (BDCA-1)+ Dendritic Cell Isolation Kit isolates two distinct cell populations from blood: CD1c+CD14- cDCs and CD1c+CD14+ monocytes. CD1c+ cDCs and CD1c+ monocytes exhibited strikingly different properties, including their differential regulation of surface marker expression, their levels of cytokine production, and their ability to stimulate naïve CD4+ T cells. These results demonstrate that a commercial CD1c (BDCA-1)+ Dendritic Cell Isolation Kit isolates two functionally different cell populations, which has important implications for the interpretation of previously generated data using this kit to characterize CD1c+ cDCs.
Selo DaSilva