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Homologous and site-specific DNA recombination has revolutionized genetic engineering. The reliability of recombinases such as Cre and FLP has allowed scientists to design complex strategies to study gene function in mammals. However, the retention of recombination sites in the genome limits the use of Cre and FLP recombinases in subsequent modifications. Access to additional recombinases in the ES...
To successfully treat cancer we will likely need a much more detailed understanding of the genes and pathways meaningfully altered in individual cancer cases. One method for achieving this goal is to derive cancers in model organisms using unbiased forward genetic screens that allow cancer gene candidate discovery. We have developed a method using a “cut-and-paste” DNA transposon system called Sleeping...
Identification of multipotent cardiac progenitors has provided important insights into the mechanisms of myocardial lineage specification, yet has done little to clarify the origin of the endocardium. Despite its essential role in heart development, characterization of the endocardial lineage has been limited by the lack of specific markers of this early vascular subpopulation. To distinguish endocardium...
Conditional gene knockout represents an extremely powerful approach to study the function of single genes in the nervous system. The Cre-LoxP system is the most advanced technology for spatial and temporal control of genetic inactivation, and there is rapid progress using this methodology in neuroscience research. In this approach, mice with LoxP sites flanking the gene of interest (floxed mice) are...
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