PMID- 28177661 OWN - NLM STAT- MEDLINE DCOM- 20180109 LR - 20180109 IS - 1205-7541 (Electronic) IS - 0008-4212 (Linking) VI - 95 IP - 6 DP - 2017 Jun TI - Anti-inflammatory effects of dabrafenib in vitro and in vivo. PG - 697-707 LID - 10.1139/cjpp-2016-0519 [doi] AB - The screening of bioactive compound libraries can be an effective approach for repositioning FDA-approved drugs or discovering new treatments for human diseases (drug repositioning). Drug repositioning refers to the development of existing drugs for new indications. Dabrafenib (DAB) is a B-Raf inhibitor and initially used for the treatment of metastatic melanoma therapy. Here, we tested the possible use of DAB in the treatment of lipopolysaccharide (LPS)-mediated vascular inflammatory responses. The anti-inflammatory activities of DAB were determined by measuring permeability, neutrophils adhesion and migration, and activation of pro-inflammatory proteins in LPS-activated human umbilical vein endothelial cells (HUVECs) and mice. We found that DAB inhibited LPS-induced barrier disruption, expression of cell adhesion molecules (CAMs), and adhesion and transendothelial migration of neutrophils to human endothelial cells. DAB also suppressed LPS-induced hyperpermeability and leukocytes migration in vivo. Furthermore, DAB suppressed the production of tumor necrosis factor-alpha (TNF-alpha) or interleukin (IL)-6 and the activation of nuclear factor-kappaB (NF-kappaB) or extracellular regulated kinases (ERK) 1/2 by LPS. Moreover, treatment with DAB resulted in reduced LPS-induced lethal endotoxemia. These results suggest that DAB possesses anti-inflammatory functions by inhibiting hyperpermeability, expression of CAMs, and adhesion and migration of leukocytes, thereby endorsing its usefulness as a therapy for vascular inflammatory diseases. FAU - Lee, In-Chul AU - Lee IC AD - a Department of Cosmetic Science and Technology, Seowon University, Cheongju 28674, Republic of Korea. FAU - Kim, Jongdoo AU - Kim J AD - b Cancer Control Team, Gachon University Gil Medical Center, Incheon 21565, Republic of Korea. FAU - Bae, Jong-Sup AU - Bae JS AD - c College of Pharmacy, CMRI, Research Institute of Pharmaceutical Sciences, BK21 Plus KNU Multi-Omics based Creative Drug Research Team, Kyungpook National University, Daegu 41566, Republic of Korea. LA - eng PT - Journal Article DEP - 20170203 PL - Canada TA - Can J Physiol Pharmacol JT - Canadian journal of physiology and pharmacology JID - 0372712 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Cell Adhesion Molecules) RN - 0 (Imidazoles) RN - 0 (Interleukin-6) RN - 0 (Lipopolysaccharides) RN - 0 (NF-kappa B) RN - 0 (Oximes) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) RN - QGP4HA4G1B (dabrafenib) SB - IM MH - Animals MH - Anti-Inflammatory Agents/*pharmacology/therapeutic use MH - Blood Vessels/drug effects/metabolism MH - Cell Adhesion/drug effects MH - Cell Adhesion Molecules/metabolism MH - Cell Movement/drug effects MH - Endotoxemia/chemically induced/prevention & control MH - Extracellular Signal-Regulated MAP Kinases/metabolism MH - Gene Expression Regulation/drug effects MH - Human Umbilical Vein Endothelial Cells/drug effects/metabolism MH - Humans MH - Imidazoles/*pharmacology/therapeutic use MH - Interleukin-6/biosynthesis MH - Lipopolysaccharides/pharmacology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - NF-kappa B/metabolism MH - Neutrophils/cytology/drug effects MH - Oximes/*pharmacology/therapeutic use MH - Tumor Necrosis Factor-alpha/biosynthesis OTO - NOTNLM OT - barrier integrity OT - dabrafenib OT - dabrafenib OT - drug repositioning OT - inflammation OT - integrite de la barriere OT - lipopolysaccharide OT - repositionnement des medicaments EDAT- 2017/02/09 06:00 MHDA- 2018/01/10 06:00 CRDT- 2017/02/09 06:00 PHST- 2017/02/09 06:00 [pubmed] PHST- 2018/01/10 06:00 [medline] PHST- 2017/02/09 06:00 [entrez] AID - 10.1139/cjpp-2016-0519 [doi] PST - ppublish SO - Can J Physiol Pharmacol. 2017 Jun;95(6):697-707. doi: 10.1139/cjpp-2016-0519. Epub 2017 Feb 3.