PMID- 28123644 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1943-8141 (Print) IS - 1943-8141 (Electronic) IS - 1943-8141 (Linking) VI - 9 IP - 1 DP - 2017 TI - microRNA-142 is upregulated by tumor necrosis factor-alpha and triggers apoptosis in human gingival epithelial cells by repressing BACH2 expression. PG - 175-183 AB - Tumor necrosis factor-alpha (TNF-alpha) has been shown to cause apoptosis of gingival epithelial cells (GECs) in periodontitis. However, the underlying molecular mechanism is still unclear. In this study, we showed that miR-142 expression was significantly elevated in human GECs after exposure to TNF-alpha. Such induction was in a time- and concentration-dependent manner. Serum miR-142 levels were positively correlated with serum TNF-alpha levels in patients with chronic periodontitis (r = 0.314, P = 0.0152). Depletion of miR-142 was found to attenuate TNF-alpha-induced apoptosis, as determined by TUNEL staining and caspase-3 activity assays. In contrast, overexpression of miR-142 significantly reduced viability and induced apoptosis in GECs. Basic leucine zipper transcription factor 2 (BACH2) was identified to be a functional target of miR-142. Overexpression of miR-142 caused a 3-fold reduction of BACH2 protein in primary GECs. Overexpression of BACH2 significantly reversed miR-142- or TNF-alpha-induced apoptosis of GECs. Similar to the findings with miR-142 mimic, depletion of BACH2 significantly promoted apoptosis in GECs, which was accompanied by decreased expression of Bcl-2 and Bcl-xL and increased expression of Bax and Bim. Overall, miR-142 mediates TNF-alpha-induced apoptosis in gingival epithelial cells by targeting BACH2 and may represent a potential therapeutic target for periodontitis. FAU - Li, Song AU - Li S AD - Department of Periodontology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of StomatologyShanghai, China; Jiangsu Key Laboratory of Oral Diseases, Department of Periodontology, Affiliated Hospital of Stomatology, Nanjing Medical UniversityNanjing, China. FAU - Song, Zhongchen AU - Song Z AD - Department of Periodontology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology Shanghai, China. FAU - Dong, Jiachen AU - Dong J AD - Department of Periodontology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology Shanghai, China. FAU - Shu, Rong AU - Shu R AD - Department of Periodontology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology Shanghai, China. LA - eng PT - Journal Article DEP - 20170115 PL - United States TA - Am J Transl Res JT - American journal of translational research JID - 101493030 PMC - PMC5250714 OTO - NOTNLM OT - Apoptosis OT - chronic periodontitis OT - gingival epithelial cells OT - inflammatory cytokines OT - microRNA EDAT- 2017/01/27 06:00 MHDA- 2017/01/27 06:01 PMCR- 2017/01/15 CRDT- 2017/01/27 06:00 PHST- 2016/07/07 00:00 [received] PHST- 2016/12/29 00:00 [accepted] PHST- 2017/01/27 06:00 [entrez] PHST- 2017/01/27 06:00 [pubmed] PHST- 2017/01/27 06:01 [medline] PHST- 2017/01/15 00:00 [pmc-release] PST - epublish SO - Am J Transl Res. 2017 Jan 15;9(1):175-183. eCollection 2017.