TY - JOUR
T1 - Elevated circulating CD14lowCD16+ monocyte subset in primary biliary cirrhosis correlates with liver injury and promotes Th1 polarization
AU - Peng, Anping
AU - Ke, Peifeng
AU - Zhao, Rong
AU - Lu, Xinyi
AU - Zhang, Cheng
AU - Huang, Xianzhang
AU - Tian, Guangjun
AU - Huang, Jun
AU - Wang, Jinli
AU - Invernizzi, Pietro
AU - Chen, Qubo
AU - Zhuang, Junhua
PY - 2015/9/24
Y1 - 2015/9/24
N2 - Primary biliary cirrhosis (PBC) is a progressive autoimmune liver disease in which monocytes/macrophages infiltration and skewed T helper type (Th) 1 and Th17 cell responses participate in the development of the disease. Human peripheral blood monocytes are heterogeneous and can be divided into classical CD14highCD16−, intermediate CD14highCD16+, and nonclassical CD14lowCD16+ monocyte subsets. Compared to classical monocytes, CD16+ monocytes are generally termed pro-inflammatory monocytes and play an important pathogenic role in autoimmune diseases. However, little is known about the immunophenotype and immunopathogenic role of peripheral blood CD16+ monocytes in PBC. Thus, we investigated the phenotype and function of these circulating monocyte subsets from PBC patients. The frequencies of circulating CD14highCD16+ and CD14lowCD16+ subpopulation were increased in disease compared with healthy controls. Among them, CD14lowCD16+ monocyte subset positively correlated with disease progress, liver damage indicators and serum C-reactive protein, respectively. Furthermore, the frequencies of Th1 and Th17 cells were upregulated and CD14lowCD16+ monocyte subset was also positively associated with Th1 cell frequency in PBC. Using a vitro coculture model, we further found that CD14lowCD16+ monocytes promoted Th1 cell polarization compared to classical monocytes. Interleukin-12 (IL-12) and direct contact of patient CD4+T cell and CD14lowCD16+ monocytes, were responsible for CD14lowCD16+ monocytes promotion of Th1 cells polarization in PBC. Our study demonstrated that the enhanced CD14lowCD16+ monocyte subset participated in fostering liver damage and inflammatory responses, and promoted Th1 cells skewing in PBC.
AB - Primary biliary cirrhosis (PBC) is a progressive autoimmune liver disease in which monocytes/macrophages infiltration and skewed T helper type (Th) 1 and Th17 cell responses participate in the development of the disease. Human peripheral blood monocytes are heterogeneous and can be divided into classical CD14highCD16−, intermediate CD14highCD16+, and nonclassical CD14lowCD16+ monocyte subsets. Compared to classical monocytes, CD16+ monocytes are generally termed pro-inflammatory monocytes and play an important pathogenic role in autoimmune diseases. However, little is known about the immunophenotype and immunopathogenic role of peripheral blood CD16+ monocytes in PBC. Thus, we investigated the phenotype and function of these circulating monocyte subsets from PBC patients. The frequencies of circulating CD14highCD16+ and CD14lowCD16+ subpopulation were increased in disease compared with healthy controls. Among them, CD14lowCD16+ monocyte subset positively correlated with disease progress, liver damage indicators and serum C-reactive protein, respectively. Furthermore, the frequencies of Th1 and Th17 cells were upregulated and CD14lowCD16+ monocyte subset was also positively associated with Th1 cell frequency in PBC. Using a vitro coculture model, we further found that CD14lowCD16+ monocytes promoted Th1 cell polarization compared to classical monocytes. Interleukin-12 (IL-12) and direct contact of patient CD4+T cell and CD14lowCD16+ monocytes, were responsible for CD14lowCD16+ monocytes promotion of Th1 cells polarization in PBC. Our study demonstrated that the enhanced CD14lowCD16+ monocyte subset participated in fostering liver damage and inflammatory responses, and promoted Th1 cells skewing in PBC.
KW - CD16
KW - Monocyte subsets
KW - Primary biliary cirrhosis
KW - T helper type 1 cells
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U2 - 10.1007/s10238-015-0381-2
DO - 10.1007/s10238-015-0381-2
M3 - Article
C2 - 26403460
AN - SCOPUS:84944540289
JO - Zeitschrift für Die Gesamte Experimentelle Medizin
JF - Zeitschrift für Die Gesamte Experimentelle Medizin
SN - 1591-8890
ER -