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首页> 外文期刊>Journal of Leukocyte Biology: An Official Publication of the Reticuloendothelial Society >Inhibition of murine macrophage nitric oxide production by synthetic oligonucleotides.
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Inhibition of murine macrophage nitric oxide production by synthetic oligonucleotides.

机译:合成寡核苷酸抑制鼠巨噬细胞一氧化氮的产生。

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摘要

Synthetic 30-mer phosphorothioate (Ps) oligonucleotides (ODN) comprised of single bases (SdA30, SdC30, SdG30, and SdT30) were assessed for their effects on nitric oxide (NO) production by murine bone marrow macrophages (BMMC) and macrophage cell lines J774 and RAW264.7. Pretreatment of these cells with any of the four Ps ODN inhibited NO production induced by CpG ODN, E. coli DNA (EC DNA), or LPS. This inhibition was time- and dose-dependent and was observed even if the Ps ODN were added as long as 12 h after stimulation. As in the case of stimulatory ODN, inhibition was dependent on backbone structure and length. Thus, all four 30-mer, single-base Ps ODN were inhibitory, and only dG30 among phosphodiester ODN was inhibitory. Together, these observations indicate that Ps ODN can inhibit macrophage production of inflammatory mediators, suggesting a role of these compounds as immunomodulatory agents.
机译:评估了由单碱基(SdA30,SdC30,SdG30和SdT30)组成的30-mer硫代磷酸合成寡核苷酸(ODN)对鼠骨髓巨噬细胞(BMMC)和巨噬细胞细胞系对一氧化氮(NO)产生的影响。 J774和RAW264.7。用四种Ps ODN中的任何一种预处理这些细胞均会抑制CpG ODN,大肠杆菌DNA(EC DNA)或LPS诱导的NO产生。这种抑制作用是时间和剂量依赖性的,即使在刺激后长达12 h加入Ps ODN也能观察到这种抑制作用。与刺激性ODN一样,抑制作用取决于骨架结构和长度。因此,所有四个30聚体,单碱基Ps ODN均被抑制,而磷酸二酯ODN中仅dG30被抑制。总之,这些观察结果表明Ps ODN可以抑制巨噬细胞炎性介质的产生,表明这些化合物作为免疫调节剂的作用。

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