cAMP应答元件结合蛋白(cAMP response element binding protein,CREB)在神经元生成、突触可塑性及学习记忆等方面都具有重要的调节作用,这使得与CREB信号通路相关的分子成为较受关注的神经系统疾病干预的药物靶点.本文概述了CREB的基本...cAMP应答元件结合蛋白(cAMP response element binding protein,CREB)在神经元生成、突触可塑性及学习记忆等方面都具有重要的调节作用,这使得与CREB信号通路相关的分子成为较受关注的神经系统疾病干预的药物靶点.本文概述了CREB的基本构成、相关信号通路、其目的基因表达调控及其在阿尔茨海默病(Alzheimer’s disease,AD)中的作用.展开更多
目的观察松郁安神方对异相睡眠剥夺(PSD)大鼠海马环磷酸腺苷反应元件结合蛋白(CREB)的影响。方法采用改良多平台睡眠剥夺法建立PSD大鼠模型,连续7 d用松郁安神方进行灌胃。RT-PCR和蛋白印迹法检测对照组、PSD模型组、中药高、低剂量组...目的观察松郁安神方对异相睡眠剥夺(PSD)大鼠海马环磷酸腺苷反应元件结合蛋白(CREB)的影响。方法采用改良多平台睡眠剥夺法建立PSD大鼠模型,连续7 d用松郁安神方进行灌胃。RT-PCR和蛋白印迹法检测对照组、PSD模型组、中药高、低剂量组大鼠海马CREB m RNA和蛋白表达的情况。结果与对照组比较,PSD模型组大鼠海马CREB m RNA及蛋白表达均明显降低(P<0.01),不同剂量松郁安神方干预后,中药高剂量组CREB m RNA及蛋白表达明显升高(P<0.01),中药低剂量组CREB m RNA表达升高(P<0.05),蛋白表达也明显升高(P<0.01)。结论松郁安神方改善PSD大鼠学习记忆能力的机制可能与调节海马CREB的表达有关。展开更多
Metal ions play critical roles in the interaction between deoxyribonucleic acid(DNA) and protein.The experimental research has demonstrated that the Mg^2+ ion can affect the binding between transcription factor and DN...Metal ions play critical roles in the interaction between deoxyribonucleic acid(DNA) and protein.The experimental research has demonstrated that the Mg^2+ ion can affect the binding between transcription factor and DNA.In our work,by full-atom molecular dynamic simulation, the effects of the Mg^2+ ion on the cyclic adenosine monophosphate(cAMP)response element binding protein(CREB)/cAMP response elements(CRE) complex are investigated.It is illustrated that the number of hydrogen bonds formed at the interface between protein and DNA is significantly increased when the Mg^2+ ion is added.Hence, an obvious change in the structure of the DNA is observed.Then the DNA base groove and base pair parameters are analyzed.We find that, due to the introduction of the Mg2+ ion, the DNA base major groove becomes narrower.A potential mechanism for this observation is proposed.It is confirmed that the Mg^2+ ion can enhance the stability of the DNA–protein complex.展开更多
文摘目的观察松郁安神方对异相睡眠剥夺(PSD)大鼠海马环磷酸腺苷反应元件结合蛋白(CREB)的影响。方法采用改良多平台睡眠剥夺法建立PSD大鼠模型,连续7 d用松郁安神方进行灌胃。RT-PCR和蛋白印迹法检测对照组、PSD模型组、中药高、低剂量组大鼠海马CREB m RNA和蛋白表达的情况。结果与对照组比较,PSD模型组大鼠海马CREB m RNA及蛋白表达均明显降低(P<0.01),不同剂量松郁安神方干预后,中药高剂量组CREB m RNA及蛋白表达明显升高(P<0.01),中药低剂量组CREB m RNA表达升高(P<0.05),蛋白表达也明显升高(P<0.01)。结论松郁安神方改善PSD大鼠学习记忆能力的机制可能与调节海马CREB的表达有关。
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11705064,11675060,and 91730301)the Fundamental Research Funds for the Central Universities,China(Grant Nos.2662016QD005 and 26622018JC017)the Huazhong Agricultural University Scientific and Technological Self-Innovation Foundation Program,China(Grant No.2015RC021)
文摘Metal ions play critical roles in the interaction between deoxyribonucleic acid(DNA) and protein.The experimental research has demonstrated that the Mg^2+ ion can affect the binding between transcription factor and DNA.In our work,by full-atom molecular dynamic simulation, the effects of the Mg^2+ ion on the cyclic adenosine monophosphate(cAMP)response element binding protein(CREB)/cAMP response elements(CRE) complex are investigated.It is illustrated that the number of hydrogen bonds formed at the interface between protein and DNA is significantly increased when the Mg^2+ ion is added.Hence, an obvious change in the structure of the DNA is observed.Then the DNA base groove and base pair parameters are analyzed.We find that, due to the introduction of the Mg2+ ion, the DNA base major groove becomes narrower.A potential mechanism for this observation is proposed.It is confirmed that the Mg^2+ ion can enhance the stability of the DNA–protein complex.
