Xiao W, Berta S C, Lu M M, Moscioni A D, Tazelaar J, Wilson J M
Institute for Human Gene Therapy and Departments of Molecular and Cellular Engineering and of Medicine, University of Pennsylvania, and the Wistar Institute, Philadelphia, Pennsylvania, USA.
J Virol. 1998 Dec;72(12):10222-6. doi: 10.1128/JVI.72.12.10222-10226.1998.
Factors relevant to the successful application of adeno-associated virus (AAV) vectors for liver-directed gene therapy were evaluated. Vectors with different promoters driving expression of human alpha-1-antitrypsin (alpha-1AT) were injected into the portal circulation of immunodeficient mice. alpha-1AT expression was stable but dependent on the promoter. Southern analysis of liver DNA revealed approximately 0.1 to 2.0 provirus copies/diploid genome in presumed head-to-tail concatamers. In situ hybridization and immunohistochemical analysis revealed expression in approximately 5% of hepatocytes clustered in the pericentral region. These results support the use of AAV as a vector for diseases treatable by targeting of hepatocytes.
评估了与腺相关病毒(AAV)载体成功应用于肝脏定向基因治疗相关的因素。将驱动人α-1抗胰蛋白酶(α-1AT)表达的不同启动子的载体注入免疫缺陷小鼠的门静脉循环。α-1AT表达稳定,但依赖于启动子。肝脏DNA的Southern分析显示,在假定的头对头串联体中,每二倍体基因组约有0.1至2.0个前病毒拷贝。原位杂交和免疫组织化学分析显示,在中央周围区域聚集的约5%的肝细胞中有表达。这些结果支持将AAV用作靶向肝细胞可治疗疾病的载体。