核因子-κB“decoy”寡核苷酸对LPS诱导巨噬细胞TNF-α和IL-6表达的影响

Effects of NF-κB "decoy" oligodeoxynucleotides on TNF-α and IL-6 expression in LPS-induced mouse macrophages

目的 :研究核因子 -κB“decoy”寡核苷酸 (decoyODNs)对脂多糖 (LPS)诱导小鼠巨噬细胞株J774 1细胞TNF -α和IL - 6表达的影响。方法 :酶联免疫吸附法 (ELISA)测定培养上清液中TNF -α、IL - 6含量 ,半定量RT -PCR观察细胞TNF -α、IL - 6mRNA表达变化。结果 :核因子 -κB“decoy”ODNs可降低LPS诱导的J774 1细胞TNF -α和IL - 6含量 ,减少TNF -α及IL - 6的表达 ;对照序列的ODNs和转染剂对TNFα、IL - 6无明显影响。结论 :核因子-κB“decoy”ODNs可抑制TNF -α和IL - 6生成 ,为急性失控性炎性疾病的防治提供了新思路。

AIM: To study the effect of NF-κB 'decoy' oligodeoxynucleotides on TNF-α and IL-6 expression in LPS-induced mouse macrophages. METHODS: Mouse macrophage cell line J774.1 cells were cultured with LPS and liposome-mediated oligodeoxynucleotides, and the levels of TNF-α and IL-6 measured in the different culture supernatant by enzyme linked immunosorbent assay. RNA was extracted from macrophages, and the mRNA expression of TNF-α and IL-6 in macrophages was observed by RT-PCR. RESULTS: NF-κB 'decoy' oligodeoxynucleotides decreased the expression of TNF-α and IL-6 in LPS-induced macrophages and inhibited generation of TNF-α and IL-6. The level of TNF-α and IL-6 did not change in control group. CONCLUSIONS: NF-κB 'decoy' oligodeoxynucleotides inhibit the expression of TNF-α and IL-6 in LPS-induced macrophages, which is probably due to the specific inhibition of activated NF-κB binding sites .