作者: Yutaka Hanazono , Jian-Mei Yu , Cynthia E. Dunbar , Robert V. B. Emmons
DOI: 10.1089/HUM.1997.8.11-1313
关键词: Green fluorescent protein 、 Gene expression 、 Vector (molecular biology) 、 Cell culture 、 Gene 、 Transfection 、 Molecular biology 、 Biology 、 Mutant 、 Plasmid
摘要: ABSTRACT Green fluorescent protein (GFP) has been used as a reporter molecule for gene expression because it fluoresces green after blue-light excitation. Inclusion of this in vector could allow rapid, nontoxic selection successfully transduced cells. However, many attempts by our laboratory to isolate stable retroviral producer cell clones secreting biologically active vectors containing either the highly S65T-GFP mutant or humanized GFP have failed. Vector plasmids various forms and neomycin resistance were transfected into three different packaging lines fluorescence was observed several days, but selected with G418 no longer fluoresced. Using confocal microscopy, brightest cells contract die within matter days. RNA slot-blot analysis supernatants showed viral production from plasmid-transfected clones, although all derived transfection an identic...