α突触核蛋白作用核苷酸序列的体外筛选研究

摘要

Aim To study the screening of the nucleo-tide sequences might be affected by α-syn in vitro. Methods The nucleotide sequences were synthesized according to the feature of base composition, and then mixed with the α-syn-GFP. The CD was used to ana-lyse the changes of the peak. Result The peak of the CD changed greatly when the α-syn-GFP mixed with the GC-box like sequence. Conclusion The α-syn-GFP might affect the GC-box like sequence after trans-located into the nuclei. Then, it plays a role in physio-logical and pathological conditions by affecting the reg-ulation of gene expression.%目的：体外筛选α突触核蛋白可能作用的核苷酸序列。方法根据碱基组成特征合成一系列的核苷酸序列,与α突触核蛋白-绿色荧光蛋白(α-synuclein-green fluorescent protein,α-syn-GFP)融合蛋白混合,采用圆二色谱分析色谱峰的变化情况。结果α突触核蛋白-绿色荧光蛋白融合蛋白混合入GC-box样核苷酸序列后导致色谱峰发生较大变化。结论α突触核蛋白转位进入细胞核后,可能通过作用于GC box样核苷酸序列,参与细胞核内的基因表达调控,从而发挥其生理或病理作用。