Comparison of promoter region constructs for in vivo intramuscular expression

被引:7
作者
Fabre, Emmanuelle E.
Bigey, Pascal
Orsini, Cecile
Scherman, Daniel [1 ]
机构
[1] INSERM U640, F-75006 Paris, France
[2] CNRS UMR 8151, F-75006 Paris, France
[3] Univ Paris 05, Fac Sci Pharmaceut & Biol, Chem & Genet Pharmacol Lab, F-75006 Paris, France
[4] Ecole Natl Super Chim Paris, F-75005 Paris, France
[5] Sanofi Aventis, Genom Sci France, F-94403 Vitry Sur Seine, France
关键词
gene therapy; electrotransfer; skeletal muscle; promoter;
D O I
10.1002/jgm.878
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Background: High transgene expression is generally expected after gene transfer. However, different level, kinetics and localization of expression might be needed for relevant therapeutic applications. Former studies have compared various promoter regions driving gene expression leading to conflicting results. In the present work, two promoter families have been compared using the efficient in vivo intramuscular electrotransfer technique. Methods: Three promoter regions were constructed by associating the strong ubiquitous cytomegalovirus (CMV) enhancer-promoter to its homologous intron A or to a heterologous intron, or to a hybrid intron. Promoter regions derived from the muscle creatine kinase (MCK) promoter were also studied. The expression of the same transgene (SeAP or neurotrophin-3) under control of these different promoters was compared after plasmid electrotransfer in mouse tibialis-cranialis skeletal muscle. Results: Heterologous intron association to the CMV promoter did not modify gene expression kinetics nor increase gene expression level. Usefulness of intron A or hybrid intron association to the CMV promoter depended on the gene. The various MCK promoters drove efficient gene expression but lower than that obtained with the CMV promoter. Furthermore, peak value was reached earlier with MCK promoter regions (14 days). Conclusion: For applications of gene transfer restricted to skeletal muscle, the MCK promoter or a MCK promoter variant would be a promising alternative to the CMV promoter. Indeed, it has been demonstrated that the use of MCK promoter limits humoral and cell-mediated immune responses. Furthermore, the MCK promoter decreases the initial expression peak that may be detrimental, drives a sustained gene expression, and improves gene transfer safety. Copyright (c) 2006 John Wiley & Sons, Ltd.
引用
收藏
页码:636 / 645
页数:10
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