Introduction of cell markers into germ layer tissues of the mouse gastrula by whole embryo electroporation

被引:19
作者
Davidson, BP [1 ]
Tsang, TE [1 ]
Khoo, PL [1 ]
Gad, JM [1 ]
Tam, PPL [1 ]
机构
[1] Childrens Med Res Inst, Embryol Unit, Westmead, NSW 2145, Australia
关键词
electroporation; lacZ; EGFP; Cre recombinase; alkaline phosphatase; mouse; gastrula; embryo;
D O I
10.1002/gene.10166
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
We have optimized the technique of electroporation for introducing genetic markers into cells of the gastrulating mouse embryo to follow cell fates, tissue movement, and lineage differentiation. Using a plate-needle electrode combination and specific route of plasmid delivery, labeling could be targeted to discrete regions of the epiblast or the endoderm of the late gastrula. Among the various types of fluorescent and chromogenic reporter constructs tested, those driven by CMV promoter are efficient and strong expression can be detected as soon as 2-3 h after electroporation. The efficacy of marking cell lineages by CRE-mediated activation of reporters proved to be inefficient for tracking cell lineages due to an obligatory 8-9-h lag from the electroporation of constructs to the expression of reporter. This significant time lag also raises concern of the temporal precision at which tissue- or stage-specific knock-out or activation of genetic activity may be achieved by the Cre-IoxP mechanism. (C) 2002 Wiley-Liss, Inc.
引用
收藏
页码:57 / 62
页数:6
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