中国当代儿科杂志2017，Vol.19Issue(9)：1008-1013,6.DOI:10.7499/j.issn.1008-8830.2017.09.015
皮质酮对体外培养发育中胎鼠脑皮层神经元迁移蛋白LIS1表达的影响
Effect of corticosterone on lissencephaly 1 expression in developing cerebral cortical neurons of fetal rats cultured in vitro
摘要
Abstract
Objective To investigate the effect of corticosterone on the expression of the neuronal migration protein lissencephaly 1 (LIS1) in developing cerebral cortical neurons of fetal rats. Methods The primary cultured cerebral cortical neurons of fetal Wistar rats were divided into control group, low-dose group, and high-dose group. The neurons were exposed to the medium containing different concentrations of corticosterone (0 μmol/L for the control group, 0.1 μmol/L for the low-dose group, and 1.0 μmol/L for the high-dose group). The neurons were collected at 1, 4, and 7 days after intervention. Western blot and immunocytochemical staining were used to observe the change in LIS1 expression in neurons. Results Western blot showed that at 7 days after intervention, the low- and high-dose groups had significantly higher expression of LIS1 in the cytoplasm and nucleus of cerebral cortical neurons than the control group (P<0.05), and the high-dose group had significantly lower expression of LIS1 in the cytoplasm of cerebral cortical neurons than the low-dose group (P<0.05). Immunocytochemical staining showed that at 1, 4, and 7 days after corticosterone intervention, the high-dose group had a significantly lower mean optical density of LIS1 than the control group and the low-dose group (P<0.05). At 7 days after intervention, the low-dose group had a significantly lower mean optical density of LIS1 than the control group (P<0.05). Conclusions Corticosterone downregulates the expression of the neuronal migration protein LIS1 in developing cerebral cortical neurons of fetal rats cultured in vitro, and such effect depends on the concentration of corticosterone and duration of corticosterone intervention.关键词
皮质酮/脑发育/Lissencephaly1/神经元/胎鼠Key words
Corticosterone/Brain development/Lissencephaly 1/Neuron/Fetal rats引用本文复制引用
罗森林,薄涛,刘通,熊佳佳,里健..皮质酮对体外培养发育中胎鼠脑皮层神经元迁移蛋白LIS1表达的影响[J].中国当代儿科杂志,2017,19(9):1008-1013,6.基金项目
国家自然科学基金(81671506). （81671506）
