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DNAzymes(Dzs) are single-stranded DNA catalysts that specifically cleave the mRNA of targeted genes.Compared with other gene-silencing technologies,such as ribozymes,antisense oligonucleotide and small interference RNA(siRNA),DNAzymes have several advantages,including small molecular weight,diversity,low cost and relative stability in serum.With the evolution of molecular technology,the first DNAzyme was generated in vitro in 1994.From then on,DNAzymes have been studied in order to understand their structures,chemistry and biological applications.Particularly,DNAzymes have been widely applied as a new interference strategy in the treatment of many conditions,including cancer,viral diseases,and cardiovascular diseases.This review mainly summarizes the use of DNAzymes in the areas of cancer research and therapy. 相似文献
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利用马来酰亚胺基类酯(Sulfo-SMCC)为异双功能偶联剂,将巯基修饰好的DNAzyme共价固定在已负载亚甲基蓝的氨基化介孔二氧化硅纳米材料上,并将壳聚糖混合后滴涂至碳糊电极表面上形成了电化学生物传感膜.利用循环伏安法、电化学阻抗法等对膜电极的制备过程进行了相应的表征.结果表明:基于巯基修饰的DNAzyme已成功固定于二氧化硅纳米材料上,并在碳糊电极表面上形成了稳定的膜. 相似文献
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