PMID- 29806345 OWN - NLM STAT- MEDLINE DCOM- 20181126 LR - 20210915 IS - 1002-1892 (Print) IS - 1002-1892 (Linking) VI - 32 IP - 5 DP - 2018 May 15 TI - [Effects of FTY720-P on EphA2-EphrinA2 bidirectional signaling in osteoclasts]. PG - 575-580 LID - 10.7507/1002-1892.201710109 [doi] AB - OBJECTIVE: To investigate the effects of FTY720-P on EphA2-EphrinA2 bidirectional signaling in osteoclasts. METHODS: Murine RAW264.7 macrophages were induced into osteoclasts by dexamethasone and 1alpha, 25-dihydroxyvitamin D (3), and identified by tartrate resistant acid phosphatase (TRAP) staining. Then, the osteoclasts were divided into 2 groups. The osteoclasts were treated with 400 ng/mL FTY720-P in experimental group and without FTY720-P in control group, respectively. After 48 hours of culture, the cells in 2 groups were detected by real-time fluorescent quantitative PCR, Western blot, and immunofluorescence staining. The expressions of EphA2, EphrinA2, RhoA, and the bone reconstruction associated proteins[bone morphogenetic protein 2 (BMP-2) and transform growth factor beta (1) (TGF-beta (1))]were analyzed and compared. RESULTS: RAW264.7 cells were successfully induced into osteoclasts identified by TRAP staining. Compared with control group, the relative expressions of EphA2 and EphrinA2 mRNAs and proteins in experimental group significantly decreased after 48 hours ( P<0.05), and the relative expression of RhoA protein also significantly decreased ( P<0.05). The relative expressions of BMP-2 and TGF-beta (1) mRNAs were significantly increased ( P<0.05), and those protein expressions were enhanced. CONCLUSION: FTY720-P can down-regulate the expression of RhoA and promote the expressions of TGF- beta (1) and BMP-2 by affecting the transduction of EphA2-EphrinA2 bidirectional signaling in osteoclasts. FAU - Zheng, Libin AU - Zheng L AD - Guangdong Medical University, Zhanjiang Guangdong, 524023, P.R.China. FAU - Huang, Dong AU - Huang D AD - Guangdong Medical University, Zhanjiang Guangdong, 524023, P.R.China;Department of Trauma Orthopedics, Guangdong Second Provincial Central Hospital, Guangzhou Guangdong, 510000, P.R.China.dong_177@126.com. LA - chi PT - Journal Article PL - China TA - Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi JT - Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery JID - 9425194 RN - 0 (Bone Morphogenetic Protein 2) RN - 0 (Ephrin-A2) RN - 0 (FTY 720P) RN - 0 (Organophosphates) RN - EC 2.7.10.1 (Receptor, EphA2) RN - NGZ37HRE42 (Sphingosine) SB - IM MH - Animals MH - Bone Morphogenetic Protein 2 MH - *Cell Differentiation MH - Ephrin-A2/*metabolism MH - Macrophages MH - Mice MH - Organophosphates/*metabolism MH - Osteoclasts/*metabolism MH - Receptor, EphA2/*metabolism MH - *Signal Transduction MH - Sphingosine/*analogs & derivatives/metabolism PMC - PMC8430003 OTO - NOTNLM OT - EphA2 OT - EphrinA2 OT - FTY720-P OT - RhoA OT - osteoclasts EDAT- 2018/05/29 06:00 MHDA- 2018/11/27 06:00 PMCR- 2018/05/01 CRDT- 2018/05/29 06:00 PHST- 2018/05/29 06:00 [entrez] PHST- 2018/05/29 06:00 [pubmed] PHST- 2018/11/27 06:00 [medline] PHST- 2018/05/01 00:00 [pmc-release] AID - zgxfcjwkzz-32-5-575 [pii] AID - 10.7507/1002-1892.201710109 [doi] PST - ppublish SO - Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi. 2018 May 15;32(5):575-580. doi: 10.7507/1002-1892.201710109.