Impaired responses of leukemic dendritic cells derived from a human myeloid cell line to LPS stimulation

Cited 28 time in scopus
Metadata Downloads
Title
Impaired responses of leukemic dendritic cells derived from a human myeloid cell line to LPS stimulation
Author(s)
Kwang Dong Kim; Seung-Chul Choi; Young Woock Noh; J W Kim; S G Paik; Y Yang; K I Kim; J S Lim
Bibliographic Citation
Experimental and Molecular Medicine, vol. 38, no. 1, pp. 72-84
Publication Year
2006
Abstract
Several myeloid leukemia-derived cells have been reported to possess the ability to differentiate into dendritic cells (DC). MUTZ-3, a myeloid leukemia cell line, responds to GM-CSF, IL-4 and TNF-α, and acquires a phenotype similar to immature monocyte-derived DC (MoDC). In the present study, MUTZ-3-derived DC (MuDC) showed high level expression of HLA class II molecules, CD80 and CD86, and were able to function as potent antigen presenting cells as previously reported. Interestingly, MuDC maturation was induced by CD40-mediated stimulation, but not by LPS stimulation. We analyzed CCR1, CCR7 and Toll-like receptor (TLR) expressions in MuDC, and measured IL-10 and IL-12 production after maturation stimuli. Although MuDC expressed the mRNA for TLR4, a major component of the LPS receptor system, they did not show an enhanced level of CCR7 or cytokine production after LPS stimulation. In contrast, they responded to CD40 stimulation, which resulted in increased levels of CD83, CD86 and CCR7. Moreover, while LPS-stimulated MoDC could potently stimulate NK cells in a DC-NK cell co-culture, LPS-stimulated MuDC failed to stimulate primary NK cells. Taken together, our findings suggest that, although MuDC express TLR4, unlike TNF-α and IL-1β, LPS does not stimulate MuDC to acquire mature phenotypes, and they may have impaired activity to initiate innate immune response.
Keyword
Antigens, CD40Cell differentiationDendritic cellsKiller cells, naturalLipopolysaccharidesToll-like receptors
ISSN
I000-0028
Publisher
Springer-Nature Pub Group
DOI
http://dx.doi.org/10.1038/emm.2006.9
Type
Article
Appears in Collections:
1. Journal Articles > Journal Articles
Files in This Item:
  • There are no files associated with this item.


Items in OpenAccess@KRIBB are protected by copyright, with all rights reserved, unless otherwise indicated.