Dong Xiaobo,Chen Qiang,Du Haojuan,et al.2,3,7,8-Tetrachlorodibenzo-p-dioxin induces cleft palate through miR-214-3p suppressing mesenchymal cell proliferation and migration[J].Journal of Chongqing Medical University,2025,50(12):1717-1722.
To investigate the role of miRNA(miR)-214-3p in a cleft palate induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin(TCDD).
Methods
2
We established a cleft palate model by intragastrically administering TCDD(64 μg/kg) to pregnant C57 mice. The expression of miR-214-3p in mouse embryonic palatal mesenchymal(MEPM) cells was measured by miRNA sequencing and quantitative real-time polymerase chain reaction(qRT-PCR). We examined the effects of TCDD via miR-214-3p on the proliferation and migration of MEPM cells by using Cell Counting Kit-8,5-ethynyl-2’-deoxyuridine assay,transwell assay,and wound healing assay.
Results
2
Exposing C57 mice at 10.5 days of gestation to TCDD(64 μg/kg),32 of 32 fetuses(100%) in the experimental group developed a cleft palate. No cleft palate occurred in the control group(0/28). The TCDD group showed significantly up-regulated expression of miR-214-3p,miR-296-5p,and miR-33-5p and significantly down-regulated expression of miR-92a-3p,miR-126a-3p,and miR-411-5p. The qRT-PCR results verified miR-214-3p as significantly differentially expressed. The miR-214-3p inhibitor partially restored the proliferation and migration abilities of MEPM cells exposed to TCDD.
Conclusions
2
TCDD can suppress the proliferation and migration of MEPM cells through miR-214-3p,indicating that miR-214-3p may play a crucial role in TCDD-induced cleft palate in mice.
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references
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Related Institution
Department of Oral and Maxillofacial Surgery,Affiliated Stomatological Hospital of Zunyi Medical University
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Key Laboratory of Developmental Diseases in Childhood,Ministry of Education,Chongqing Medical University
Department of Plastic Surgery,the Children’s Hospital,Chongqing Medical University,Ministry of Education Key Laboratory of Child Development and Disorders,Key Laboratory of Pediatrics in Chongqing,Chongqing International Science and Technology Cooperation Center for Child Development and Disorders