Jillian Wilson Rose Hills
Role of EGR1 in the Cardiac Neural Crest
Multipotent neural crest cells have the capability to differentiate into derivatives. By studying the gene regulatory networks that precisely control their development, we can discover how these networks are utilized in repair mechanisms and how they malfunction in relation to disease. Using the chicken embryo as a model organism, I will focus on cells that migrate into the heart and study the role of transcription factor Egr1 in their development. Egr1 is a BMP-responsive gene, but how is it regulated in the neural crest? I will look at the gene expression of Egr1 by labeling its RNA transcripts using a technique called hybridization chain reaction. This will tell us where the gene is present within the developing embryo. To understand when the gene is first expressed, I will look at different stages of embryonic development. Once I identify the expression pattern of Egr1, I will knock it out using CRISPR-Cas9 to see what changes occur within the hindbrain and/or the neural crest. I hope that my project will contribute to further understanding of the cardiac neural crest.