2017年4月5日,《自然》(Nature)在线发表了浙江大学药学院张海涛研究员团队题为《血管紧张素Ⅱ受体的选择性和多样性的结构基础》(structural basis for selectivity and diversity in angiotensin Ⅱ receptors)的论文(http:/...2017年4月5日,《自然》(Nature)在线发表了浙江大学药学院张海涛研究员团队题为《血管紧张素Ⅱ受体的选择性和多样性的结构基础》(structural basis for selectivity and diversity in angiotensin Ⅱ receptors)的论文(http://www.nature.com/nature/joumal/vaop/ncurrent/full/nature22035.html)。该研究应用最新的自由电子激光技术(XFEL)和同步辐射,首次解析了AT2R与两种药物先导化合物的复合物晶体三维结构,其中一种是AT2R选择性配体,另一种是AT1R/AT2R双靶点配体,并通过一系列构效关系研究、分子对接、分子动力学和突变实验,系统阐明了不同亚型血管紧张素Ⅱ受体的配体选择性和功能多样性的结构基础,从而为基于结构的AT1R/AT2R靶向药物研究提供了关键信息。展开更多
Objective: To investigate the effect of adenoviral vector-mediated AT2R gene transfection on neointimal hyperplasia after rat carotid artery balloon injury. Methods :AT2R gene was transferred into rat carotid arteries...Objective: To investigate the effect of adenoviral vector-mediated AT2R gene transfection on neointimal hyperplasia after rat carotid artery balloon injury. Methods :AT2R gene was transferred into rat carotid arteries by recombinant adenovirus pAd-AT2R after the establishment of rat carotid balloon injury restenosis model. The arteries were harvested on the 14th day after gene transfer. The efficiency of trans-gene delivery was measured by the expression of adenovirus-encoding green fluorescent protein (GFP) under fluorescent microscope. The expression of AT2R and PCNA (proliferating cell nuclear antigen) was e-valuated by RT-PCR, immunocytochemistry, immunofluorescence staining, confocal microscopy, respectively. The ratio of intimal to medial area (I/M) was quantified with images and determined by an image analysis system. Results: GFP-positive area in adventitia, media and the forming neointima was about 40%. Adenoviral delivery of rat AT2R gene up-regulated AT2R expression in balloon-injured rat carotid and reduced PCNA expression and I/M significantly in neointima(P<0. 01). Double immunofluorescence labeling of AT2R and PCNA also showed that AT2R gene transfer inhibited VSMCs proliferation in neointima. Conclusion: AT2R gene transfer may be a novel promising therapy to limit neointimal hyperplasia.展开更多
文摘2017年4月5日,《自然》(Nature)在线发表了浙江大学药学院张海涛研究员团队题为《血管紧张素Ⅱ受体的选择性和多样性的结构基础》(structural basis for selectivity and diversity in angiotensin Ⅱ receptors)的论文(http://www.nature.com/nature/joumal/vaop/ncurrent/full/nature22035.html)。该研究应用最新的自由电子激光技术(XFEL)和同步辐射,首次解析了AT2R与两种药物先导化合物的复合物晶体三维结构,其中一种是AT2R选择性配体,另一种是AT1R/AT2R双靶点配体,并通过一系列构效关系研究、分子对接、分子动力学和突变实验,系统阐明了不同亚型血管紧张素Ⅱ受体的配体选择性和功能多样性的结构基础,从而为基于结构的AT1R/AT2R靶向药物研究提供了关键信息。
文摘Objective: To investigate the effect of adenoviral vector-mediated AT2R gene transfection on neointimal hyperplasia after rat carotid artery balloon injury. Methods :AT2R gene was transferred into rat carotid arteries by recombinant adenovirus pAd-AT2R after the establishment of rat carotid balloon injury restenosis model. The arteries were harvested on the 14th day after gene transfer. The efficiency of trans-gene delivery was measured by the expression of adenovirus-encoding green fluorescent protein (GFP) under fluorescent microscope. The expression of AT2R and PCNA (proliferating cell nuclear antigen) was e-valuated by RT-PCR, immunocytochemistry, immunofluorescence staining, confocal microscopy, respectively. The ratio of intimal to medial area (I/M) was quantified with images and determined by an image analysis system. Results: GFP-positive area in adventitia, media and the forming neointima was about 40%. Adenoviral delivery of rat AT2R gene up-regulated AT2R expression in balloon-injured rat carotid and reduced PCNA expression and I/M significantly in neointima(P<0. 01). Double immunofluorescence labeling of AT2R and PCNA also showed that AT2R gene transfer inhibited VSMCs proliferation in neointima. Conclusion: AT2R gene transfer may be a novel promising therapy to limit neointimal hyperplasia.