首页> 外文期刊>Cellular immunology >Vitamin C-treated murine bone marrow-derived dendritic cells preferentially drive naive T cells into Th1 cells by increased IL-12 secretions.
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Vitamin C-treated murine bone marrow-derived dendritic cells preferentially drive naive T cells into Th1 cells by increased IL-12 secretions.

机译:维生素C处理过的鼠源于骨髓的树突状细胞优先通过增加IL-12分泌,将幼稚T细胞驱动为Th1细胞。

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摘要

Vitamin C has been reported to shift immune responses toward Th1. In this study, we evaluated whether this effect was by way of dendritic cells. Murine dendritic cells (DCs) were prepared from bone marrow precursors. DCs treated with vitamin C secreted an increased amount of IL-12p70 after activation with LPS. These cells rendered naive T cells to secrete more Th1 cytokine, IFN-gamma, and less Th2-cytokine, IL-5 in the culture supernatants. Vitamin C-treatment also increased phosphorylation of p38 and ERK1/2 in DCs. p38 inhibitor in culture media suppressed the effect of vitamin C to elevate IL-12p70 secretion. In contrast, ERK inhibitor elevated IL-12p70 secretion. In summary, vitamin C taken up into DCs increased IL-12p70 secretion of these cells by modulating the activation of signal molecules, and thus shifted immune responses toward Th1. These data provide us a new insight on the role of vitamin C in modulating immune responses.
机译:据报道,维生素C可将免疫反应移向Th1。在这项研究中,我们评估了这种作用是否是通过树突状细胞。从骨髓前体制备鼠树突状细胞(DC)。用LPS激活后,用维生素C处理的DC分泌更多的IL-12p70。这些细胞使幼稚的T细胞在培养上清液中分泌更多的Th1细胞因子IFN-γ和更少的Th2细胞因子IL-5。维生素C处理还增加了DC中p38和ERK1 / 2的磷酸化。培养基中的p38抑制剂抑制了维生素C提高IL-12p70分泌的作用。相反,ERK抑制剂可提高IL-12p70的分泌。总之,摄取到DC中的维生素C通过调节信号分子的激活来增加这些细胞的IL-12p70分泌,从而使免疫反应向Th1转移。这些数据为我们提供了有关维生素C在调节免疫反应中作用的新见解。

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