This project chooses hepatitis B virus (HBV) and the interferon induced transmembrane protein 3 (IFITM3) as the research subjects. IFITM3 was the antiviral "star molecule" for the last two years, and the research is focused on the new anti-HBV replication mechanism of IFITM3. The project will illustrate how IFITM3 affect HBV replication using the in vitro & in vivo HBV replication model, determine IFITM3 molecular essential structures for its anti-HBV activity through mutant construction, and identify 1-2 key signal molecules and pathways in IFITM3 anti-HBV replication through strategies of tandem affinity purification, microarray, bioinformatic analysis and combined with experimental confirmation. Our research will provide theoretical basis and experimental support for antiviral gene therapy based on IFITM3 over-expression and the screening of small molecular inducer of IFITM3. This is consistent with the major demand for infectious viral disease control and prevention in China, and possesses both important scientific significance and potential application values.
本课题以乙型肝炎病毒(hepatitis B virus, HBV)和近两年抗病毒"明星分子"干扰素诱导跨膜蛋白3(interferon induced transmembrane protein 3, IFITM3)为研究对象,以IFITM3抗HBV复制的新机制为研究核心,利用实验所室拥有的HBV体内外复制模型阐明IFITM3抗HBV活性的主要作用环节,采用构建IFITM3突变体和抗HBV活性检测等手段确定IFITM3抗HBV复制的分子结构基础,通过串联亲和层析、基因芯片联合生物信息学分析并与实验验证相结合的策略确定1-2个IFITM3抗HBV复制的关键信号分子及通路。本研究将为基于IFITM3过表达的抗病毒基因治疗或其小分子诱导剂的筛选提供理论基础和实验支持,符合我国病毒性传染疾病防治的重大需求,具有重要的科学意义和潜在应用价值。
本课题以乙型肝炎病毒(hepatitis B virus, HBV)和近年抗病毒“明星分子”干扰素诱导跨膜蛋白3(interferon induced transmembrane protein 3, IFITM3)为研究对象,利用实验室所拥有的HBV体内外复制模型发现IFITM3在体内外具有一定的抗HBV复制和基因表达活性,并采用构建IFITM3突变体和抗HBV活性检测等手段基本确定了IFITM3抗HBV复制的分子结构基础,但通过串联亲和层析等方法尚未发现IFITM3抗HBV复制的关键信号分子及通路。另外在课题的实施过程中我们还发明了一种shRNA构建新方法并被邀请发表英文专著章节一章,建立了一种HBV复制子的快速构建方法和HBV受体NTCP(Na+-dependent taurocholate cotransporting polypeptide)的稳定转染细胞模型;利用HBV受体NTCP的稳定转染细胞模型未发现IFITM3对HBV侵染具有抑制作用。考虑到本课题研究的重要科学意义和潜在应用价值,后续我们将继续深入探索IFITM3抗HBV病毒的具体分子机制,为基于IFITM3过表达的抗病毒基因治疗或其小分子诱导剂的筛选提供理论基础和实验支持。
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数据更新时间:2023-05-31
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