Effects of fluoride exposure on microRNA-200c expression and its target in human osteoblast Saos-2 cells
10.3760/cma.j.issn.2095-4255.2018.05.005
- VernacularTitle:氟暴露对人成骨细胞系Saos-2细胞微小RNA-200c表达及其靶点的影响
- Author:
Hongge WANG
1
;
Yuting JIANG
;
Pan YAN
;
Hanwen SHAO
;
Ye BU
;
Yanhui GAO
;
Dianjun SUN
Author Information
1. 哈尔滨医科大学中国疾病预防控制中心地方病控制中心地氟病防治研究所
- Keywords:
Fluorine;
Human osteoblast Saos-2 cells;
MicroRNA-200c;
PTEN;
DUSP1
- From:
Chinese Journal of Endemiology
2018;37(5):366-369
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of fluoride exposure on expression of miRNA (miR)-200c and its target in human osteoblast Saos-2 cells.Methods Saos-2 cells were cultured in DMEM/F-12 medium and treated with fluoride (sodium fluoride,NaF).There were two groups including:control group (0 mg/L) and fluoride group (4 mg/L).Cells were harvested after 48 hours of culture with fluoride.The expression of miR-200c,the mRNA of alkaline phosphatase (ALP),osteocalcin (BGP),the target phosphatase and tensin homolog deleted on chromosome ten (PTEN) and dual-specific phosphatase 1 (DUSP1) of miR-200c was detected by qRT-PCR.The protein expression of PTEN and DUSP1 was detected by Western blotting.Results The expressions of ALP,BGP mRNA and miR-200c in Saos-2 cells in the fluoride group (23.60 ± 1.87,9.41 ± 0.94,8.61 ± 0.26) were higher than those in the control group (1.00 ± 0.11,1.00 ± 0.07,1.00 ± 0.12).The differences were statistically significant (t =-24.084,-18.388,-8.687,P ＜ 0.05).The mRNA expressions of PTEN and DUSP1 in the fluoride group (0.63 ± 0.02,0.38 ± 0.02) were lower than those in the control group (1.02 ± 0.24,1.02 ± 0.24).The differences were statistically significant (t =3.327,5.454,P ＜ 0.05).The protein expressions of PTEN and DUSP1 in Saos-2 cells in the fluoride group (1.19 ± 0.10,0.83 ± 0.07) were lower than those in the control group (1.81 ± 0.14,1.44 ± 0.25).The differences were statistically significant (t =6.250,4.171,P ＜ 0.05).Conclusion Exposure to fluorine may increase the expression of miR-200c in Saos-2 cells,and fluorine may act on PTEN and DUSP1 through miR-200c,downregulates the mRNA and protein expression levels of PTEN and DUSP1.
