1. High-resolution characterization of gene function using single-cell CRISPR tiling screen.
- Author
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Yang L, Chan AKN, Miyashita K, Delaney CD, Wang X, Li H, Pokharel SP, Li S, Li M, Xu X, Lu W, Liu Q, Mattson N, Chen KY, Wang J, Yuan YC, Horne D, Rosen ST, Soto-Feliciano Y, Feng Z, Hoshii T, Xiao G, Müschen M, Chen J, Armstrong SA, and Chen CW
- Subjects
- Drug Screening Assays, Antitumor, Gene Editing, Gene Expression Regulation, Neoplastic, Genetic Testing, Genome, Human, Histone-Lysine N-Methyltransferase chemistry, Histone-Lysine N-Methyltransferase genetics, Histones, Humans, Models, Molecular, Mutagenesis, Transcriptome, CRISPR-Cas Systems, Clustered Regularly Interspaced Short Palindromic Repeats genetics, Neoplasms genetics, Phenotype
- Abstract
Identification of novel functional domains and characterization of detailed regulatory mechanisms in cancer-driving genes is critical for advanced cancer therapy. To date, CRISPR gene editing has primarily been applied to defining the role of individual genes. Recently, high-density mutagenesis via CRISPR tiling of gene-coding exons has been demonstrated to identify functional regions in genes. Furthermore, breakthroughs in combining CRISPR library screens with single-cell droplet RNA sequencing (sc-RNAseq) platforms have revealed the capacity to monitor gene expression changes upon genetic perturbations at single-cell resolution. Here, we present "sc-Tiling," which integrates a CRISPR gene-tiling screen with single-cell transcriptomic and protein structural analyses. Distinct from other reported single-cell CRISPR screens focused on observing gene function and gene-to-gene/enhancer-to-gene regulation, sc-Tiling enables the capacity to identify regulatory mechanisms within a gene-coding region that dictate gene activity and therapeutic response.
- Published
- 2021
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