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2004 ; 5
(12
): 1227-34
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Bone marrow plasmacytoid dendritic cells can differentiate into myeloid dendritic
cells upon virus infection
#MMPMID15531885
Zuniga EI
; McGavern DB
; Pruneda-Paz JL
; Teng C
; Oldstone MB
Nat Immunol
2004[Dec]; 5
(12
): 1227-34
PMID15531885
show ga
Two subsets of dendritic cell (DCs), plasmacytoid (p) and myeloid (m) DCs, have
been described in humans and mice. These subsets are known to have divergent
roles during an immune response, but their developmental course is unclear. Here
we report that virus infection induces bone marrow pDCs to differentiate into
mDCs, thereby undergoing profound phenotypic and functional changes including the
acquisition of enhanced antigen-presenting capacity and the ability to recognize
different microbial structures through Toll-like receptor 4. The conversion of
pDCs into mDCs is also induced by the injection of double-stranded RNA and
requires type I interferons. Our results establish a precursor-product
developmental relationship between these two DC subsets and highlight unexpected
plasticity of bone marrow pDCs.