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KMID : 0624620140470090512
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BMB Reports
2014 Volume.47 No. 9 p.512 ~ p.517
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Mycobacterium abscessus MAB2560 induces maturation of dendritic cells via Toll-like receptor 4 and drives Th1 immune response
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Lee Su-Jung
Shin Sung-Jae
Lee Seung-Jun
Lee Moon-Hee
Kang Tae-Heung
Noh Kyung-Tae
Shin Yong-Kyoo
Kim Han-Wool
Yun Cheol-Heui
Jung In-Duk
Park Yeong-Min
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Abstract
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In this study, we showed that Mycobacterium abscessus MAB2560 induces the maturation of dendritic cells (DCs), which are representative antigen-presenting cells (APCs). M. abscessus MAB2560 stimulate the production of pro-inflammatory cytokines [interleukin (IL)-6, tumor necrosis factor (TNF)-α, IL-1β, and IL-12p70] and reduce the endocytic capacity and maturation of DCs. Using TLR4-/- DCs, we found that MAB2560 mediated DC maturation via Toll-like receptor 4 (TLR4). MAB2560 also activated the MAPK signaling pathway, which was essential for DC maturation. Furthermore, MAB2560- treated DCs induced the transformation of na?ve T cells to polarized CD4+ and CD8+ T cells, which would be crucial for Th1 polarization of the immune response. Taken together, our results indicate that MAB2560 could potentially regulate the host immune response to M. abscessus and may have critical implications for the manipulation of DC functions for developing DC-based immunotherapy.
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KEYWORD
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Dendritic cells, MAB2560, MAPKs, Mycobacterium abscessus, Th1 polarization
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