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靶向乙型肝炎病毒的外源性microRNA的构建及作用

发布时间:2018-02-05 00:05

  本文关键词: microRNA 乙肝病毒 复制 RNA干扰 出处:《中山大学学报(医学科学版)》2017年04期  论文类型:期刊论文


【摘要】:【目的】探讨靶向乙型肝炎病毒的外源性microRNA(amiRNA)的构建及其抑制HBV复制的作用。【方法】应用Invitrogen公司miRNA在线设计软件(BLOCK-iT~(TM) RNAi Designer)针对HBV基因设计4条amiRNA序列;构建amiRNA真核表达质粒,Lipofectamine2000转染至人肝癌细胞株HepG2.2.15;荧光定量PCR检测HBV-DNA,ELISA检测HBsAg和HBeAg表达水平。【结果】设计合成的4条amiRNA均可下调培养体系中HBV-DNA水平以及HBsAg和HBeAg水平,与阴性对照组相比差异有统计学意义(P0.05)。其中以miR3抑制HBV-DNA复制的效果最为显著。【结论】靶向HBV基因适当位点设计合成的amiRNA在体外可以有效抑制HBV的复制。
[Abstract]:[objective] to investigate the construction of exogenous microRNAi RNAs targeting hepatitis B virus (HBV) and its inhibitory effect on HBV replication. [methods] four amiRNA sequences were designed for HBV gene by Invitrogen miRNA online design software (BLOCK-iTTM) RNAi designer. AmiRNA eukaryotic expression plasmid was constructed and transfected into human hepatoma cell line HepG2.2.15.The expression levels of HBsAg and HBeAg were detected by fluorescence quantitative PCR. [results] the four amiRNA fragments designed and synthesized could down-regulate the levels of HBV-DNA, HBsAg and HBeAg in the culture system. Compared with the negative control group, the difference was statistically significant (P 0.05). The inhibition of HBV-DNA replication by miR3 was the most significant. [conclusion] amiRNA targeting at the appropriate site of HBV gene can effectively inhibit the replication of HBV in vitro.
【作者单位】: 广东药科大学临床医学院;广东药科大学生命科学与生物制药学院;
【基金】:国家自然科学基金(81000923) 广东省科技计划项目(2013B021800089,2016A02021602,2014A020212468)
【分类号】:R373.21
【正文快照】: 慢性乙型肝炎病毒(hepatitis B virus,HBV)感染是导致肝硬化、重型肝炎及肝细胞癌的主要原因。在中国,有大约9%的人口存在慢性HBV感染。干扰素和核苷(酸)类似物等抗病毒治疗药物仍然是目前治疗慢性HBV的唯一选择[1]。但上述药物副作用大,不能彻底清除肝细胞核内的共价闭合环状

【参考文献】

相关期刊论文 前2条

1 郜玉峰;余莉;叶s,

本文编号:1491543


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