...
首页> 外文期刊>Journal of endotoxin research >Use of murine embryonic fibroblasts to define Toll-like receptor activation and specificity.
【24h】

Use of murine embryonic fibroblasts to define Toll-like receptor activation and specificity.

机译:鼠胚胎成纤维细胞在定义Toll样受体激活和特异性中的用途。

获取原文
获取原文并翻译 | 示例
           

摘要

Toll-like receptors (TLRs) are critically involved in the innate immune response to bacterial, viral and fungal pathogens. We have studied human peripheral blood mononuclear cells, murine embryonic fibroblasts (MEFs) and a panel of human cell lines, including HEK, HeLa, AGS, ECV304 and U373 cells, for expression of TLR-specific mRNAs and for TLR-ligand dependent cytokine secretion. Peripheral blood cells expressed multiple TLRs; however, many studies have shown that blood contains multiple, heterogeneous cell populations with distinct patterns of TLR expression. Cell lines had variable expression of TLRs, and in most cases lacked TLR2 and TLR8 expression and only weakly expressed mRNAs for TLR5, TLR7 and TLR9. In contrast, MEFs expressed high levels of mRNA for TLR1, TLR2, TLR3, TLR4, TLR5, TLR6, TLR7, TLR8 and TLR9. MEFs were highly responsive to TLR-ligand activation and secreted high levels of both IL-6 and MCP-1 in response to TLR ligands. MEFs from mice with targeted deletions of TLR2, TLR4 and MyD88 demonstrated profound defects in their IL-6 response to their specific ligands, consistent with studies of macrophages and tissues from adult knockout animals. MEF cultures are homogenous and amenable to biochemical analysis and should allow rigorous studies of the contribution of individual TLRs to the innate immune response.
机译:Toll样受体(TLR)至关重要地参与了对细菌,病毒和真菌病原体的先天免疫应答。我们已经研究了人类外周血单核细胞,鼠胚胎成纤维细胞(MEF)和人类细胞系(包括HEK,HeLa,AGS,ECV304和U373细胞)的面板,以表达TLR特异性mRNA和TLR配体依赖性细胞因子的分泌。外周血细胞表达了多个TLR。但是,许多研究表明,血液中包含多个异种细胞群体,并具有不同的TLR表达模式。细胞系具有可变的TLR表达,并且在大多数情况下缺乏TLR2和TLR8表达,并且仅弱表达TLR5,TLR7和TLR9的mRNA。相反,MEF表达高水平的TLR1,TLR2,TLR3,TLR4,TLR5,TLR6,TLR7,TLR8和TLR9 mRNA。 MEF对TLR配体的活化高度敏感,并在对TLR配体的应答中分泌高水平的IL-6和MCP-1。来自具有TLR2,TLR4和MyD88靶向缺失的小鼠的MEF在其对特定配体的IL-6反应中显示出严重缺陷,这与对成年基因敲除动物的巨噬细胞和组织的研究一致。 MEF培养物是同质的,适合进行生化分析,并且应该允许对单个TLR对先天免疫反应的贡献进行严格的研究。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号