首页|A2AR活化在脑创伤后tau蛋白过度磷酸化中的作用和机制分析

A2AR活化在脑创伤后tau蛋白过度磷酸化中的作用和机制分析

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目的 研究A2AR活化在脑创伤后tau蛋白过度磷酸化中的作用和机制.方法 选择无特定病原体级的SD大鼠、SH-SY5Y进行培养,大鼠原代海马神经元分别加CGS21680溶液和DMSO,SH-SY5Y的观察组分别加CGS21680溶液,及sb216763、H-89,或只加ZM241385,对照组加DMSO,对比各组tau蛋白过度磷酸化情况.结果 大鼠原代海马神经元tau蛋白磷酸化水平明显高于对照组,差异有统计学意义(P<0.05);SH-SY5Y细胞中,观察1组tau蛋白磷酸化水平明显升高,与其他组相比,差异有统计学意义(P<0.05);观察2组和3组tau蛋白磷酸化水平明显高于对照组,差异有统计学意义(P<0.05);观察4组和5组tau蛋白磷酸化水平与对照组比较,差异无统计学意义.结论 脑创伤后A2AR活化能够激活激酶A和GSK-3β,从而导致tau蛋白过度磷酸化.
Analysis of the role and mechanism of A2AR activation in tau hyperphosphorylation after brain injury
Objective To study the role and mechanism of A2AR activation in tau hyperphosphorylation after brain injury.Methods SD rats were cultured with no specific pathogen level.SH-SY5Y was cultured.The rats were treated with CGS21680 solution and DMSO and SH-SY5Y respectively.The CGS21680 solution and sb216763, H-89, or Only add ZM241385, the control group plus DMSO, compared with each group tau hyperphosphorylation.Results The phosphorylation level of tau protein in SH-SY5Y cells was significantly higher than that in the control group (P<0.05).The phosphorylation level of tau protein in the primary hippocampal neurons of rats was significantly higher than that of the control group (P<0.05).The levels of tau protein phosphorylation in group 2 and group 3 were significantly higher than those in control group (P<0.05).The expression of tau in group 4 and group 5 was statistically significant (P<0.05)There was no significant difference in phosphorylation level between the two groups.Conclusion A2AR activation can activate kinase A and GSK-3β after brain injury, leading to tau hyperphosphorylation.

A2ARbrain traumatau hyperphosphorylationmechanism

张克利、郭志刚

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天津市宝坻区人民医院,天津医科大学宝坻临床学院 神经外科,天津 301800

A2AR 脑创伤 tau蛋白过度磷酸化 机制

2017

中国生化药物杂志
南京生物化学制药研究所,全国生化制药情报中心站,中国生化制药工业协会,中国药品生物制品检定所

中国生化药物杂志

ISSN:1005-1678
年,卷(期):2017.(7)
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