Résumé
AIM: To study the effect of NF-?B "decoy" oligodeoxynucleotides on TNF-? 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-? 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-? and IL-6 in macrophages was observed by RT-PCR. RESULTS: NF-?B "decoy" oligodeoxynucleotides decreased the expression of TNF-? and IL-6 in LPS-induced macrophages and inhibited generation of TNF-? and IL-6. The level of TNF-? and IL-6 did not change in control group. CONCLUSIONS: NF-?B "decoy" oligodeoxynucleotides inhibit the expression of TNF-? and IL-6 in LPS-induced macrophages, which is probably due to the specific inhibition of activated NF-?B binding sites .