Human BDCA2+CD123+CD56+ dendritic cells (DCs) related to blastic plasmacytoid dendritic cell neoplasm represent a unique myeloid DC subset
Protein & Cell
;
(12): 297-306, 2015.
Article
in English
| WPRIM
| ID: wpr-757590
ABSTRACT
Dendritic cells (DCs) comprise two functionally distinct subsets plasmacytoid DCs (pDCs) and myeloid DCs (mDCs). pDCs are specialized in rapid and massive secretion of type I interferon (IFN-I) in response to nucleic acids through Toll like receptor (TLR)-7 or TLR-9. In this report, we characterized a CD56(+) DC population that express typical pDC markers including CD123 and BDCA2 but produce much less IFN-I comparing with pDCs. In addition, CD56(+) DCs cluster together with mDCs but not pDCs by genome-wide transcriptional profiling. Accordingly, CD56(+) DCs functionally resemble mDCs by producing IL-12 upon TLR4 stimulation and priming naïve T cells without prior activation. These data suggest that the CD56(+) DCs represent a novel mDC subset mixed with some pDC features. A CD4(+)CD56(+) hematological malignancy was classified as blastic plasmacytoid dendritic cell neoplasm (BPDCN) due to its expression of characteristic molecules of pDCs. However, we demonstrated that BPDCN is closer to CD56(+) DCs than pDCs by global gene-expression profiling. Thus, we propose that the CD4(+)CD56(+) neoplasm may be a tumor counterpart of CD56(+) mDCs but not pDCs.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pathology
/
Dendritic Cells
/
Membrane Glycoproteins
/
Receptors, Immunologic
/
Biomarkers
/
Interferon Type I
/
Gene Expression
/
Immunophenotyping
/
Interleukin-12
/
Cell Lineage
Limits:
Humans
Language:
English
Journal:
Protein & Cell
Year:
2015
Type:
Article
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