计算生物学
基因组
基因组工程
染色质
基因组学
编码
人类基因组
作者
Jonathan J. Froehlich,Bora Uyar,Margareta Herzog,Kathrin Theil,Petar Glažar,Altuna Akalin,Nikolaus Rajewsky
出处
期刊:Cell Reports
[Elsevier]
日期:2021-04-13
卷期号:35 (2): 108988-
标识
DOI:10.1016/j.celrep.2021.108988
摘要
Summary How regulatory sequences control gene expression is fundamental for explaining phenotypes in health and disease. Regulatory elements must ultimately be understood within their genomic environment and development- or tissue-specific contexts. Because this is technically challenging, few regulatory elements have been characterized in vivo. Here, we use inducible Cas9 and multiplexed guide RNAs to create hundreds of mutations in enhancers/promoters and 3′ UTRs of 16 genes in C. elegans. Our software crispr-DART analyzes indel mutations in targeted DNA sequencing. We quantify the impact of mutations on expression and fitness by targeted RNA sequencing and DNA sampling. When applying our approach to the lin-41 3′ UTR, generating hundreds of mutants, we find that the two adjacent binding sites for the miRNA let-7 can regulate lin-41 expression independently of each other. Finally, we map regulatory genotypes to phenotypic traits for several genes. Our approach enables parallel analysis of regulatory sequences directly in animals.
科研通智能强力驱动
Strongly Powered by AbleSci AI