PMID- 28409326 OWN - NLM STAT- MEDLINE DCOM- 20180202 LR - 20181113 IS - 1567-2387 (Electronic) IS - 1567-2379 (Linking) VI - 48 IP - 3 DP - 2017 Jun TI - Effect of corticision on orthodontic tooth movement in a rat model as assessed by RNA sequencing. PG - 199-208 LID - 10.1007/s10735-017-9718-3 [doi] AB - Corticision is a common technique to accelerate orthodontic tooth movement; however, not much is known about the underlying mechanisms. In this study, we investigated the mechanism of alveolar tissue remodeling after corticision in a rat model of tooth movement (TM) by analyzing the differential transcriptome. A total of 36 male rats were equally divided into TM and TM with corticision (TM+C) groups. Alveolar bone response was examined using micro-computed tomography (micro-CT). Osteoclasts and osteoblasts were quantified on tartrate-resistant acid phosphatase (TRAP) and Goldner's trichrome staining. The transcriptomes of alveolus around the left maxillary first molar were determined on RNA sequencing (RNA-Seq), and the expression of selected differentially expressed genes (DEGs) validated on quantitative reverse-transcriptase polymerase chain reaction (qRT-PCR). Immunohistochemical examination of alveolar tissue was performed to examine the expressions of correlative proteins of the selected signaling pathway in the TM and TM+C groups. The ratio of bone volume to total volume (BV/TV), and the trabecular number (Tb.N) were significantly decreased, while the movement distance and the trabecular separation (Tb.Sp) was significantly increased in the TM+C group. However, no significant between-group difference in trabecular thickness (Tb.Th) was observed. On histomorphometric analysis, a significant increase in the number of osteoclasts and increased bone resorption was observed in the TM+C group. A total of 399 DEGs were identified on RNA-SEq. Eleven selected genes were confirmed on qRT-PCR, which included components of the Ras signaling pathway. Four proteins of the Ras signaling pathway showed a higher expression in the TM+C group. Our findings indicate that corticision may speed up orthodontic tooth movement by accelerating osteoclastogenesis mediated via the Ras signaling pathway. FAU - Gu, Qihui AU - Gu Q AD - Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 136 Hanzhong Road, Nanjing, Jiangsu, 210029, China. FAU - Guo, Shuyu AU - Guo S AD - Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 136 Hanzhong Road, Nanjing, Jiangsu, 210029, China. FAU - Wang, Dongyue AU - Wang D AD - Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 136 Hanzhong Road, Nanjing, Jiangsu, 210029, China. FAU - Zhou, Tingting AU - Zhou T AD - Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 136 Hanzhong Road, Nanjing, Jiangsu, 210029, China. FAU - Wang, Lin AU - Wang L AD - Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 136 Hanzhong Road, Nanjing, Jiangsu, 210029, China. FAU - Wang, Zhendong AU - Wang Z AD - Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 136 Hanzhong Road, Nanjing, Jiangsu, 210029, China. wangzhd74@hotmail.com. FAU - Ma, Junqing AU - Ma J AD - Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, 136 Hanzhong Road, Nanjing, Jiangsu, 210029, China. jma@njmu.edu.cn. LA - eng PT - Journal Article DEP - 20170413 PL - Netherlands TA - J Mol Histol JT - Journal of molecular histology JID - 101193653 RN - EC 3.6.5.2 (ras Proteins) SB - IM MH - Alveolar Process MH - Animals MH - Bone Remodeling/*genetics MH - Gene Expression Regulation MH - Male MH - Osteoclasts MH - Rats MH - *Sequence Analysis, RNA MH - *Tooth Movement Techniques MH - Transcriptome/*genetics MH - X-Ray Microtomography MH - ras Proteins/metabolism OTO - NOTNLM OT - Corticision OT - Orthodontic tooth movement OT - Osteoclast OT - Ras signaling pathway EDAT- 2017/04/15 06:00 MHDA- 2018/02/03 06:00 CRDT- 2017/04/15 06:00 PHST- 2016/11/28 00:00 [received] PHST- 2017/03/20 00:00 [accepted] PHST- 2017/04/15 06:00 [pubmed] PHST- 2018/02/03 06:00 [medline] PHST- 2017/04/15 06:00 [entrez] AID - 10.1007/s10735-017-9718-3 [pii] AID - 10.1007/s10735-017-9718-3 [doi] PST - ppublish SO - J Mol Histol. 2017 Jun;48(3):199-208. doi: 10.1007/s10735-017-9718-3. Epub 2017 Apr 13.