首都医科大学学报 ›› 2005, Vol. 26 ›› Issue (6): 711-713.

• 基础研究 • 上一篇    下一篇

脂多糖对THP-1细胞CD14诱导表达的影响

侯本祥1, 张琛1, 荫俊2   

  1. 1. 首都医科大学口腔医学院牙体牙髓科;2. 军事医学科学院微生物流行病研究所
  • 收稿日期:2005-01-15 修回日期:1900-01-01 出版日期:2005-12-24 发布日期:2005-12-24

The Effects of LPS on Expression of mCD14 in THP-1 Cell Line

Hou Benxiang1, Zhang Chen1, Yin Jun2   

  1. 1. Faculty of Stomatollogy, Capital University of Medical Sciences;2. Institute of Microbiology andEpidemiology, Academy of Military Science
  • Received:2005-01-15 Revised:1900-01-01 Online:2005-12-24 Published:2005-12-24

摘要: 目的 探讨脂多糖 (LPS) 对THP-1细胞CD14诱导表达的影响。方法 应用不同质量浓度 (0.1~50mg/L) 的LPS刺激培养48h的THP-1细胞,并测定其CD14mRNA、肿瘤坏死因子α (TNFα) 和白细胞介素6 (IL-6) 表达的变化。结果 正常培养条件下,THP-1细胞CD14表达量极低,而LPS对单核巨噬细胞THP-1具有显著的诱导激活作用,在较低质量浓度剂量刺激下即可被活化,表现为CD14mRNA表达量迅速增加,同时,LPS可诱导THP-1细胞产生TNF-α和IL-6,并在一定范围内呈剂量依赖关系。结论 LPS可导致THP-1细胞活化,显著上调CD14mRNA的表达,并诱导产生炎症介质TNF-α和IL-6。

关键词: 脂多糖, CD14, 肿瘤坏死因子, 白细胞介素6, THP-1细胞

Abstract: Objective To investigate the effects of LPSon expression of mCD14 on the THP-1 cell line.Methods Under vitro cultured conditions human THP-1 cell line was stimulated respectively by 0(as control), 0.1~50 mg/L LPSfor 24 h, the cell apoptosis rate was determined with flow cytometry.The contents of TNFa and IL-6 in the supernatant were measured by ELISA.The expression levels of mCD14 on the cell membrane were measured in the levels of relative density of PCRproducts.Results After activation of LPS, the cell apoptosis rate was promoted and levels of TNF-α and IL-6 in culture supernatant were remarkablely increased.The mCD14 expression on the cell membrane was significantly up-regulated.Conclusion LPScan lead to activition of THP-1 and significantly up-regulate the expression of CD14mRNA.It reveals that LPSmay be an important inflammatory factor on THP-1 cell reactions.

Key words: LPS, CD14, TNFα, IL-6, THP-wash basin

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