Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics · 2020
[Expression of CREB in children with recurrent wheezing and its effect on ORMDL3 gene expression].
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Jin Rui, Zhang Zhen-Xing, Zhu Liang-Hua, Zhuang Li-Li, Chen Xiao-Qing
Аннотация
OBJECTIVE: To study the expression level of cAMP response element-binding protein (CREB) in children with recurrent wheezing under three years of age and its effect on the expression of the serum orosomucoid 1-like protein 3 (ORMDL3) gene.
METHODS: Thirty-six children with recurrent wheezing under three years of age who visited the hospital from June 2017 to June 2019 were selected as the recurrent wheezing group. Twenty-four healthy children from physical examination were selected as the control group. The CREB expression level in peripheral blood was measured by quantitative real-time PCR. Human bronchial epithelial cells (BEAS-2B) were cultured, and dual-luciferase reporter assay and quantitative real-time PCR were used to investigate the effects of overexpression and siRNA interference of CREB on the promoter activity and mRNA expression of the ORMDL3 gene in the BEAS-2B cells.
RESULTS: The expression level of CREB in the recurrent wheezing group was significantly higher than that in the control group (P<0.001). In BEAS-2B cells, overexpression of CREB significantly up-regulated the promoter activity and mRNA expression of the ORMDL3 gene (P<0.05), while siRNA interference of CREB significantly reduced the promoter activity and mRNA expression of the ORMDL3 gene (P<0.05).
CONCLUSIONS: The expression of CREB is increased in children with recurrent wheezing, and CREB may be involved in the pathogenesis of recurrent wheezing by regulating expression of the ORMDL3 gene.
METHODS: Thirty-six children with recurrent wheezing under three years of age who visited the hospital from June 2017 to June 2019 were selected as the recurrent wheezing group. Twenty-four healthy children from physical examination were selected as the control group. The CREB expression level in peripheral blood was measured by quantitative real-time PCR. Human bronchial epithelial cells (BEAS-2B) were cultured, and dual-luciferase reporter assay and quantitative real-time PCR were used to investigate the effects of overexpression and siRNA interference of CREB on the promoter activity and mRNA expression of the ORMDL3 gene in the BEAS-2B cells.
RESULTS: The expression level of CREB in the recurrent wheezing group was significantly higher than that in the control group (P<0.001). In BEAS-2B cells, overexpression of CREB significantly up-regulated the promoter activity and mRNA expression of the ORMDL3 gene (P<0.05), while siRNA interference of CREB significantly reduced the promoter activity and mRNA expression of the ORMDL3 gene (P<0.05).
CONCLUSIONS: The expression of CREB is increased in children with recurrent wheezing, and CREB may be involved in the pathogenesis of recurrent wheezing by regulating expression of the ORMDL3 gene.