PMID- 23126502 OWN - NLM STAT- MEDLINE DCOM- 20130321 LR - 20161125 IS - 1365-3083 (Electronic) IS - 0300-9475 (Linking) VI - 77 IP - 2 DP - 2013 Feb TI - 1,25-dihydroxyvitamin D3 inhibits nuclear factor kappa B activation by stabilizing inhibitor IkappaBalpha via mRNA stability and reduced phosphorylation in passively sensitized human airway smooth muscle cells. PG - 109-16 LID - 10.1111/sji.12006 [doi] AB - Excessive activation of nuclear transcription factor-kappaB (NF-kappaB) is involved in human airway smooth muscle cells (HASMCs) activities in asthma. We investigated the effects of 1,25 - dihydroxyvitamin D3 [1,25 - (OH) 2D3] on the NF- kappaB signaling pathway in passively sensitized HASMCs and the molecular mechanisms involved. HASMCs were treated with either healthy controls' serum, asthma patients' serum or pretreated with 1,25 - (OH) 2D3 prior to treatment with asthmatics' serum. At 1 h after serum treatment: electrophoretic mobility shift assay (EMSA) was used to detect NF-kappaB DNA binding activity; immunocytochemical staining was used to observe the nuclear translocation of NF-kappaB p65; Western blots were used for NF-kappaB p65, IkappaBalpha, and phospho-IkappaBalpha protein levels and the nuclear translocation of NF-kappaB p65; real-time quantitative PCR was used for NF-kappaB p65 and IkappaBalpha mRNA expressions; and actinomycin D treatment was used to determine IkappaBalpha mRNA stability. Our major findings were: (1) 1,25 - (OH) 2D3 significantly reduced asthma serum passively sensitized HASMCs NF-kappaB DNA binding activity and inhibited the nuclear translocation of NF-kappaB p65; (2) 1,25 - (OH) 2D3 increased the stability of IkappaBalpha mRNA with reduced IkappaBalpha phosphorylation in asthma serum passively sensitized HASMCs and significantly increased IkappaBalpha expression in these HASMCs. Inhibiting NF-kappaB signalling with 1,25 - dihydroxyvitamin D3 may be a therapeutic approach for controlling HASMC-related remodelling in asthma. CI - (c) 2012 The Authors. Scandinavian Journal of Immunology (c) 2012 Blackwell Publishing Ltd. FAU - Song, Y AU - Song Y AD - Department of Pulmonary and Critical Care Medicine, Fuzhou General Hospital of Nanjing Military Command, Dongfang Hospital, Xiamen University, Fuzhou, China. FAU - Hong, J AU - Hong J FAU - Liu, D AU - Liu D FAU - Lin, Q AU - Lin Q FAU - Lai, G AU - Lai G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Scand J Immunol JT - Scandinavian journal of immunology JID - 0323767 RN - 0 (I-kappa B Proteins) RN - 0 (NF-kappa B) RN - 0 (NFKBIA protein, human) RN - 0 (dihydroxy-vitamin D3) RN - 139874-52-5 (NF-KappaB Inhibitor alpha) RN - 1406-16-2 (Vitamin D) RN - 9007-49-2 (DNA) SB - IM MH - Active Transport, Cell Nucleus MH - Adult MH - Asthma/genetics/immunology/metabolism MH - Cell Line MH - Cell Nucleus/metabolism MH - DNA/metabolism MH - Enzyme Activation/drug effects MH - Female MH - Humans MH - I-kappa B Proteins/*genetics/*metabolism MH - Male MH - Middle Aged MH - Myocytes, Smooth Muscle/*drug effects/*metabolism MH - NF-KappaB Inhibitor alpha MH - NF-kappa B/*metabolism MH - Phosphorylation/drug effects MH - Protein Binding MH - RNA Stability/drug effects MH - Vitamin D/*analogs & derivatives/pharmacology MH - Young Adult EDAT- 2012/11/07 06:00 MHDA- 2013/03/22 06:00 CRDT- 2012/11/07 06:00 PHST- 2012/07/16 00:00 [received] PHST- 2012/10/10 00:00 [accepted] PHST- 2012/11/07 06:00 [entrez] PHST- 2012/11/07 06:00 [pubmed] PHST- 2013/03/22 06:00 [medline] AID - 10.1111/sji.12006 [doi] PST - ppublish SO - Scand J Immunol. 2013 Feb;77(2):109-16. doi: 10.1111/sji.12006.