Expression of gamma-aminobutyric acid type A receptor beta3 subunit in murine cleft palate induced by 2, 3, 7, 8-tetrachlorodibenzo-p-dioxin
10.3760/cma.j.issn.1002-0098.2019.05.007
- VernacularTitle: γ-氨基丁酸A型受体β3亚基在2,3,7,8-四氯二苯并二英诱导胎鼠腭裂模型中表达的研究
- Author:
Junqiu LEI
1
;
Lin QIU
;
Xionghui DING
;
Yuexian FU
;
Xin′gang YUAN
;
Yan LIU
Author Information
1. Department of Burns and Plastic Surgery, Children′s Hospital of Chongqing Medical University & Ministry of Education Key Laboratory of Child Development and Disorders & China International Science and Technology Cooperation Base of Child Development and Critical Disorders & Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
- Publication Type:Journal Article
- Keywords:
Cleft palate;
Tetrachlorodibenzodioxin;
Gamma-aminobutyric acid type A receptor beta3 subunit
- From:
Chinese Journal of Stomatology
2019;54(5):328-334
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the expression of gamma-aminobutyric acid type A receptor beta3 subunit (GABRB3) on cleft palate in C57BL/6J mice induced by 2,3,7,8-tetrachlorodibenzo- p-dioxin (TCDD).
Methods:Sixty C57BL/6J pregnant mice on gestation day (GD) 10.5 were divided into two groups: one group was administered through gastric tubes one dose of 28 μg/kg TCDD (experimental group) and the other group was administered through gastric tubes one dose of 5.6 ml/kg corn oil (control group). Embryos were removed by cesarean section from pregnant mice during the palatal formation stage (GD 13.5-17.5) and the palatal tissue studied in morphological and histological observation. The relative mRNA and protein expression of GABRB3 was measured by real-time quantitative PCR and Western blotting. Localization of GABRB3 protein was measured by immunohistochemistry or immunofluorescence.
Results:The incidence of cleft palate at GD17.5 was 100% in experimental group and there was no cleft palate occurred in the control group (0); elevation of palatine processes in experimental group was completed on GD15.5 which was clearly delayed by a day compared with that in control group. On GD14.5-GD17.5, the mRNA expression (0.561±0.073, 0.728±0.104, 0.782±0.137, 0.686±0.145) and protein expression (0.288±0.013, 0.404±0.017, 0.399±0.012, 0.307±0.010) in the experimental group were significantly lower than the control group mRNA expression (0.818±0.088, 0.865±0.086, 1.021±0.054, 1.163±0.179) and protein expression (0.481±0.017, 0.456±0.009, 0.474±0.016, 0.529±0.015)(P<0.05). Immunohistochemistry and immunofluorescence showed that GABRB3 was mainly expressed in the mesenchymal cells and medial edge epithelium.
Conclusions:TCDD delayed palatal shelf elevation and eventually led to cleft palate may be associated with a decrease in GABRB3. GABRB3 may play an important role in the elevation and fusion phases of the palate development.
