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An undergraduate laboratory experience using CRISPR-Cas9 technology to deactivate green fluorescent protein expression in Escherichia coli.
Biochemistry and Molecular Biology Education 2019 January 22
Undergraduates learn that gene editing in diverse organisms is now possible. How targeted manipulation of genes and genomes is utilized in basic science and biomedicine to address biological questions is challenging for undergraduates to conceptualize. Thus, we developed a lab experience that would allow students to be actively engaged in the full process of design, implementation of a gene editing strategy, and interpretation of results within an 8-week lab period of a Genetics course. The laboratory experience combines two transformative biotechnology tools; the utilization of green fluorescent protein (GFP) as a diagnostic marker of gene expression and the fundamentals and specificity of Clustered Regularly Interspaced Short Palindromic Repeats-cas9 (CRISPR-cas9) gene editing in bacterial cells. The students designed and constructed plasmids that express single guide RNA targeted to GFP, expressed the sgRNA and cas9 in bacteria cells, and successfully deactivated GFP gene expression in the bacterial cells with their designed CRISPR-cas9 tools. Student assessment revealed most students achieved student learning objectives. We conclude this lab experience is an effective and accessible method for engaging students in the scientific practices, knowledge and challenges revolving targeted CRISPR-cas9 gene manipulation. © 2019 International Union of Biochemistry and Molecular Biology, 1-11, 2019.
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