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首页> 外文期刊>Korean Journal of Microbiology and Biotechnology >Effects of PGA-LM on CD4+CD25+foxp3+ Treg Cell Activation in Isolated CD4+ T Cells in NC/Nga Mice
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Effects of PGA-LM on CD4+CD25+foxp3+ Treg Cell Activation in Isolated CD4+ T Cells in NC/Nga Mice

机译:PGA-LM对NC / Nga小鼠离体CD4 + T细胞中CD4 + CD25 + foxp3 + Treg细胞活化的影响

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摘要

Poly-gamma-glutamic acid (gamma-PGA) was mixed natural flora of Bacillus subtilis, contaminated from cooked soybeans. Also, it was performed to find out the antiallergic activity by using NC/Nga mice, in vitro. The gamma-PGA (PGA-HM : PGA-high molecular weight), Molecular weight 300 kDa, was decomposed and made PGA-LM (PGA-low molecular weight) which has molecular weight below 30 kDa by sonication. Therefore, it was same result between PGA-HM and PGA-LM, and reported PGA-LM as basic result. We foundthat PGA-LM contains antiallergic efficacy that inhibit B cells and Th2 cells activation from isolated CD4+ T cells in NC/Nga atopic dermatitis model mice, and not show a cytotoxicity in the hFCs. To investigate the effects of these PGA-LM in vitro, isolation of splenic B cell and CD4+ T cells in atopic dermatitis mice were used. To elucidate the role of PGA-LM in anti-CD40+ interleukin-4 (IL-4)-mediated B-cell activation, showed that the capacity of B cells to expression IL-1 beta, IL-6, and TNF-alphamRNA down-regulated, and IL-10 mRNA up-regulation by PGA-LM treatment, but it had no effect on TGF-beta expression. In addition to CD4+IFN-Y+ and CD4+CD25+foxp3+, the functions of PGA-LM in the development of the CD4+ CD25+foxp3+ and CD4+IFN-gamma+ cells, the phenotype and functions of PGA-LM induced CD4+CD25+ foxp3+, and CD4+IFN-gamma+ cells in CD4+ T cells. These results suggested that PGA-LM could change cytokine production and generate CD4+CD25+foxp3+ Tregs in NC/Nga mice, and may be effective for immunotherapy in patients with AD.
机译:聚-γ-谷氨酸(γ-PGA)是枯草芽孢杆菌的混合自然菌群,被煮熟的大豆污染。另外,通过使用NC / Nga小鼠在体外进行了抗过敏活性的研究。分解分子量为300kDa的γ-PGA(PGA-HM:PGA-高分子量),并通过超声处理制成分子量低于30kDa的PGA-LM(PGA-低分子量)。因此,PGA-HM和PGA-LM之间的结果相同,并以PGA-LM作为基本结果。我们发现PGA-LM包含抗过敏功效,可抑制NC / Nga特应性皮炎模型小鼠中来自分离的CD4 + T细胞的B细胞和Th2细胞活化,并且在hFC中未显示出细胞毒性。为了研究这些PGA-LM的体外作用,使用了特应性皮炎小鼠脾脏B细胞和CD4 + T细胞的分离。阐明PGA-LM在抗CD40 +白介素4(IL-4)介导的B细胞活化中的作用,表明B细胞表达IL-1 beta,IL-6和TNF-alphamRNA的能力下降PGA-LM处理可调节IL-10 mRNA的表达,并上调IL-10 mRNA的表达,但对TGF-beta的表达没有影响。除CD4 + IFN-Y +和CD4 + CD25 + foxp3 +外,PGA-LM在CD4 + CD25 + foxp3 +和CD4 +IFN-γ+细胞发育中的功能,PGA-LM诱导的CD4 + CD25 +的表型和功能CD4 + T细胞中的foxp3 +和CD4 +IFN-γ+细胞。这些结果表明,PGA-LM可以改变NC / Nga小鼠的细胞因子产生并产生CD4 + CD25 + foxp3 + Treg,对于AD患者的免疫治疗可能有效。

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