Oxysterols induce transition of monocytic cells to phenotypically mature dendritic cell-like cells

2013 ◽  
Vol 438 (1) ◽  
pp. 161-168 ◽  
Author(s):  
Yonghae Son ◽  
Sun-Mi Kim ◽  
Sae-A Lee ◽  
Seong-Kug Eo ◽  
Koanhoi Kim
2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Yonghae Son ◽  
Bo-Young Kim ◽  
Seong-Kug Eo ◽  
Young Chul Park ◽  
Koanhoi Kim

Oxysterol like 27-hydroxycholesterol (27OHChol) has been reported to induce differentiation of monocytic cells into a mature dendritic cell phenotype. We examined whether dexamethasone (Dx) affects 27OHChol-induced differentiation using THP-1 cells. Treatment of monocytic cells with Dx resulted in almost complete inhibition of transcription and surface expression of CD80, CD83, and CD88 induced by 27OHChol. Elevated surface levels of MHC class I and II molecules induced by 27OHChol were reduced to basal levels by treatment with Dx. A decreased endocytosis ability caused by 27OHChol was recovered by Dx. We also examined effects of Dx on expression of CD molecules involved in atherosclerosis. Increased levels of surface protein and transcription of CD105, CD137, and CD166 by treatment with 27OHChol were significantly inhibited by cotreatment with Dx. These results indicate that Dx inhibits 27OHChol-induced differentiation of monocytic cells into a mature dendritic cell phenotype and expression of CD molecules whose levels are associated with atherosclerosis. In addition, we examined phosphorylation of AKT induced by 27OHChol and effect of Dx, where cotreatment with Dx inhibited the phosphorylation of AKT. The current study reports that Dx regulates oxysterol-mediated dendritic cell differentiation of monocytic cells.


2020 ◽  
Author(s):  
zhihong sun ◽  
Guanjun Deng ◽  
Xinghua Peng ◽  
Xiuli Xu ◽  
Lanlan Liu ◽  
...  

Recently, photothermal-immuno synergistic therapy under mild temperature (~ 45 °C) has got broad interest in cancer treatment. Inhibition the intratumorally HSPs production is the key to accomplish highly efficient and mild photothermal therapy. In this work, we developed biomimetic nanoterminators with mature DCs functions by coating the mature dendritic cell membrane on photothermal nanoagents. As-prepared nanoterminators could automatically locate on T cell in the complex tumor-immune microenvironment and promote the T cells proliferation, activation and cytokine secretion, which could not only inhibit the expression of heat shock proteins to cooperate on highly efficient mild photothermal therapy (~42°C), but also promote tumor apoptosis during the treatment. More importantly, this nanoterminator could serve as vaccine to trigger anti-tumor immune response of the whole body, which would be promising to long-life tumor inhibition and termination.


2010 ◽  
Vol 8 (1) ◽  
pp. 52 ◽  
Author(s):  
Laura Fiammenghi ◽  
Valentina Ancarani ◽  
Tilman Rosales ◽  
Jay R Knutson ◽  
Massimiliano Petrini ◽  
...  

2015 ◽  
Vol 64 (11) ◽  
pp. 885-893 ◽  
Author(s):  
Zu-Xia Ma ◽  
Xi Tan ◽  
Yang Shen ◽  
Xia Ke ◽  
Yu-Cheng Yang ◽  
...  

2014 ◽  
Vol 24 (6) ◽  
pp. 670-675 ◽  
Author(s):  
Kotaro Tada ◽  
Toshihisa Hamada ◽  
Kenji Asagoe ◽  
Hiroshi Umemura ◽  
Kazuko Mizuno-Ikeda ◽  
...  

PLoS Biology ◽  
2012 ◽  
Vol 10 (4) ◽  
pp. e1001315 ◽  
Author(s):  
Nuria Izquierdo-Useros ◽  
Maier Lorizate ◽  
F.-Xabier Contreras ◽  
Maria T. Rodriguez-Plata ◽  
Bärbel Glass ◽  
...  

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