PMID- 29032198 OWN - NLM STAT- MEDLINE DCOM- 20171229 LR - 20211204 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 495 IP - 1 DP - 2018 Jan 1 TI - Antagonism of cysteinyl leukot-riene receptor 1 (cysLT1R) by montelukast regulates differentiation of MC3T3-E1 cells under overloaded mechanical environment. PG - 995-1001 LID - S0006-291X(17)32021-1 [pii] LID - 10.1016/j.bbrc.2017.10.051 [doi] AB - Long-term exposure to overloaded mechanical environment induces bone fatigue damage symptoms and osteoblast damages. Montelukast is a selective cysteinyl leukot-riene receptor 1 (cysLT1R) antagonist, which has been used for the treatment of bronchial asthma in clinics. In the current study, we have identified a novel pharmacological role of montelukast by finding that it has protective properties against overload damage in osteoblastic MC3T3-E1 cells. Firstly, our results show that CysLT1R is expressed in MC3T3-E1 cells. Mechanical tensile strain of 5000-7000 muepsilon resulted in a significant upregulation of CysLT1R in osteoblastic MC3T3-E1 cells in an intensity dependent manner. Secondly, MTT assay indicates that loading with 5000 muepsilon mechanical strain inhibited cell proliferation, which was suppressed by montelukast treatment. Furthermore, montelukast promotes cell differentiation by increasing the expression of ALP and RUNX2. Alizarin Red S staining assay showed that montelukast abolished the inhibitory effects of overload mechanics on osteoblast mineralization. Mechanistically, the effect of montelukast on osteoblastic differentiation acted by activating the extracellular regulated protein kinases (ERK) pathway. The obtained results suggested that montelukast promotes proliferation and differentiation in osteoblasts exposed to overload mechanics. CI - Copyright (c) 2017. Published by Elsevier Inc. FAU - Wei, Jinsong AU - Wei J AD - Department of Orthopaedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong, China. Electronic address: jlgdwei@163.com. FAU - Chen, Siyuan AU - Chen S AD - Department of Orthopaedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong, China. FAU - Huang, Chengshuo AU - Huang C AD - Department of Orthopaedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong, China. FAU - Guo, Weixiong AU - Guo W AD - Department of Orthopaedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong, China. FAU - Yang, Shukai AU - Yang S AD - Department of Orthopaedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong, China. FAU - Feng, Bailin AU - Feng B AD - Department of Orthopaedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong, China. FAU - Chu, Jiaqi AU - Chu J AD - Department of Stem Cell Research and Cellular Therapy Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, Guangdong, China. LA - eng PT - Journal Article DEP - 20171012 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Acetates) RN - 0 (Cyclopropanes) RN - 0 (Leukotriene Antagonists) RN - 0 (Quinolines) RN - 0 (Receptors, Leukotriene) RN - 0 (Sulfides) RN - LRF7RW46ID (leukotriene D4 receptor) RN - MHM278SD3E (montelukast) SB - IM MH - 3T3 Cells MH - Acetates/*administration & dosage MH - Animals MH - Cell Differentiation/*physiology MH - Cyclopropanes MH - Gene Expression Regulation, Developmental/physiology MH - Leukotriene Antagonists/*administration & dosage MH - Mechanotransduction, Cellular/*physiology MH - Mice MH - Osteoblasts/cytology/drug effects/*physiology MH - Osteogenesis/*drug effects/physiology MH - Quinolines/*administration & dosage MH - Receptors, Leukotriene/drug effects/*metabolism MH - Stress, Mechanical MH - Sulfides OTO - NOTNLM OT - Cysteinyl leukot-riene receptor 1 OT - MC3T3-E1 OT - Montelukast OT - Overload EDAT- 2017/10/17 06:00 MHDA- 2017/12/30 06:00 CRDT- 2017/10/17 06:00 PHST- 2017/09/12 00:00 [received] PHST- 2017/10/11 00:00 [accepted] PHST- 2017/10/17 06:00 [pubmed] PHST- 2017/12/30 06:00 [medline] PHST- 2017/10/17 06:00 [entrez] AID - S0006-291X(17)32021-1 [pii] AID - 10.1016/j.bbrc.2017.10.051 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2018 Jan 1;495(1):995-1001. doi: 10.1016/j.bbrc.2017.10.051. Epub 2017 Oct 12.