title: Antisense IRAK-2 oligonucleotide blocks IL-1-stimulated NF-kappaB activation and ICAM-1 expression in cultured endothelial cells.
abstract: Phosphorothioate oligodeoxynucleotide (ODN) was designed antisense to sequences of the recently cloned human IL-1 receptor associated kinase-2 (IRAK-2). Antisense IRAK-2 ODN was delivered by lipofectin encapsulation into cultured endothelial cells. The levels of NF-KB, surface expression of intracellular adhesion molecule-1 (ICAM-1), ICAM-1 and IRAK-2 mRNAs were measured by sandwich ELISA, ELISA on cells in situ, and semiquantitative reverse transcription-PCR (RT-PCR), respectively. Antisense IRAK-2 ODN inhibited IL-1-induced NF-KB activation and surface expression of ICAM-1 in a concentration (1-4 microg)- and time (5-24 h)-dependent fashion. A maximum inhibition of NF-KB activation or surface expression of ICAM-1 occurred when the cells were incubated with antisense IRAK-2 ODN 3 microg for 8 h. IL-1-induced ICAM-1 mRNA expression was also inhibited after treatment of cells with antisense IRAK-2 ODN 3 microg for 8 h. The attenuation of the cellular response to IL-1 caused by antisense IRAK-2 ODN correlated with a reduction of IRAK-2 expression. These data suggest that antisense IRAK-2 ODN may share a role in the design of antiinflammatory therapeutics.
authors.affiliation: Institute of Pharmaceutic Sciences, The First Military Medical University, Guang Zhou, China.
authors.forename: F
authors.initials: F
authors.lastname: Guo
authors.forename: Y
authors.initials: Y
authors.lastname: Li
authors.forename: S
authors.initials: S
authors.lastname: Wu
mesh_terms: D002478:Cells, Cultured; D004730:Endothelium, Vascular / Q000378:metabolism*; D005786:Gene Expression Regulation / Q000187:drug effects / Q000235:genetics; D006801:Humans; D018799:Intercellular Adhesion Molecule-1 / Q000096:biosynthesis* / Q000235:genetics; D053592:Interleukin-1 Receptor-Associated Kinases; D016328:NF-kappa B / Q000235:genetics / Q000378:metabolism*; D016376:Oligonucleotides, Antisense / Q000235:genetics / Q000494:pharmacology*; D011494:Protein Kinases / Q000235:genetics* / Q000378:metabolism
chemical_list: D016328:NF-kappa B; D016376:Oligonucleotides, Antisense; D018799:Intercellular Adhesion Molecule-1; D011494:Protein Kinases; D053592:Interleukin-1 Receptor-Associated Kinases