PMID- 31245876 OWN - NLM STAT- MEDLINE DCOM- 20200908 LR - 20200908 IS - 1097-4644 (Electronic) IS - 0730-2312 (Linking) VI - 120 IP - 11 DP - 2019 Nov TI - Identification of Gli1-interacting proteins during simvastatin-stimulated osteogenic differentiation of bone marrow mesenchymal stem cells. PG - 18979-18994 LID - 10.1002/jcb.29221 [doi] AB - Simvastatin has been shown to promote osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). Our study aimed to illuminate the underlying mechanism, with a specific focus on the role of Hedgehog signaling in this process. BMSCs cultured with or without 10(-7) mol/L simvastatin were subjected to evaluation of osteogenic differentiation capacity. Osteogenic markers such as type 1 collagen (COL1) and osteocalcin (OCN), as well as key molecules of Hedgehog signaling molecules, were examined by Western blot and real-time polymerase chain reaction (PCR). Co-immunoprecipitation and mass spectrometry assays were applied to screen for Gli1-interacting proteins. Cyclopamine (Cpn) was used as a Hedgehog signaling inhibitor. Our results indicated that simvastatin increased alkaline phosphatase (ALP) activity; mineralization of extracellular matrix; mRNA expression of ALP, COL1, and OCN; and expression and nuclear translocation of Gli1. Contrasting effects were observed in Cpn-exposed groups, but were partially rescued by the simvastatin treatment. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analyses indicated that Gli1-interacting proteins were primarily associated with mitogen-activated protein kinase (MAPK) (P = 7.04E(-04) ), hippo, insulin, and glucagon signaling. Further, hub genes identified by protein-protein interaction network analysis included Gli1-interacting proteins such as Ppp2r1a, Rac1, Etf1, and XPO1/CRM1. In summary, the current study showed that the mechanism by which simvastatin stimulates osteogenic differentiation of BMSCs involves activation of Hedgehog signaling, as indicated by interactions with Gli1 and, most notably, the MAPK signaling pathway. CI - (c) 2019 Wiley Periodicals, Inc. FAU - Chi, Bojing AU - Chi B AUID- ORCID: 0000-0001-7083-3380 AD - Medical Research Center, North China University of Science and Technology, Tangshan, China. AD - Department of Geriatrics, Affiliated Hospital of North China University of Science and Technology, Tangshan, China. FAU - Fan, Xinhao AU - Fan X AD - Department of Stomatology, Kailuan General Hospital, Tangshan, China. FAU - Li, Zhengxiao AU - Li Z AD - Department of Dermatology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China. FAU - Liu, Guangyuan AU - Liu G AD - Medical Research Center, North China University of Science and Technology, Tangshan, China. FAU - Zhang, Guobin AU - Zhang G AD - Medical Research Center, North China University of Science and Technology, Tangshan, China. FAU - Xu, Hong AU - Xu H AD - Medical Research Center, North China University of Science and Technology, Tangshan, China. FAU - Li, Zhiguo AU - Li Z AD - Medical Research Center, North China University of Science and Technology, Tangshan, China. FAU - Lian, Qiangqiang AU - Lian Q AD - Medical Research Center, North China University of Science and Technology, Tangshan, China. FAU - Xing, Lei AU - Xing L AD - Department of Geriatrics, Affiliated Hospital of North China University of Science and Technology, Tangshan, China. FAU - Tian, Faming AU - Tian F AD - Medical Research Center, North China University of Science and Technology, Tangshan, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190627 PL - United States TA - J Cell Biochem JT - Journal of cellular biochemistry JID - 8205768 RN - 0 (Gli1 protein, rat) RN - 0 (Zinc Finger Protein GLI1) RN - AGG2FN16EV (Simvastatin) SB - IM MH - Animals MH - Bone Marrow Cells/*metabolism MH - Cell Differentiation/*drug effects MH - Gene Expression Regulation/drug effects MH - MAP Kinase Signaling System/drug effects MH - Mesenchymal Stem Cells/*metabolism MH - Osteogenesis/*drug effects MH - Rats MH - Rats, Sprague-Dawley MH - Simvastatin/*pharmacology MH - Zinc Finger Protein GLI1/*metabolism OTO - NOTNLM OT - Gli1 OT - Hedgehog signaling pathway OT - osteogenic differentiation OT - simvastatin EDAT- 2019/06/28 06:00 MHDA- 2020/09/09 06:00 CRDT- 2019/06/28 06:00 PHST- 2018/11/06 00:00 [received] PHST- 2019/05/31 00:00 [revised] PHST- 2019/05/31 00:00 [accepted] PHST- 2019/06/28 06:00 [pubmed] PHST- 2020/09/09 06:00 [medline] PHST- 2019/06/28 06:00 [entrez] AID - 10.1002/jcb.29221 [doi] PST - ppublish SO - J Cell Biochem. 2019 Nov;120(11):18979-18994. doi: 10.1002/jcb.29221. Epub 2019 Jun 27.