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- W4311093062 abstract "Abstract CRISPR-Cas9-based technologies have been developed to address a wide range of biological questions, including molecular recording of embryonic development, genetic screening, and tracking tumor evolution at the single-cell resolution. We developed a single-cell lineage tracking platform called native sgRNA Capture and sequencing (NSC-seq) to leverage CRISPR technology for clonal analysis of intestinal tumors in the ApcMin/+ mouse model. We combined CRISPR-induced mutations with spontaneously accumulating mitochondrial variants to enable highly efficient lineage-tracking of single cells. We generated lineage-tracked ApcMin/+ tumors and found that there are more than two independently arising clones within a tumor. We also found oligoclonal tumors within human colorectal specimens using this technology, supporting the oligoclonality of intestinal tumor development across species. Finally, we demonstrated the application of this technology in understanding the rate of loss-of-heterozygosity events in Apc as related to the cellular turnover rates of different intestinal regions. Overall, NSC-seq enables in vivo molecular recording of spontaneous intestinal tumor development at single-cell resolution. Citation Format: Mirazul Islam, Yilin Yang, Vishal M. Shah, Alan J. Simmons, Yanwen Xu, Robert J. Coffey, Ken S. Lau. Native sgRNA capture and sequencing (NSC-seq) reveals tumor formation in ApcMin/+ mice and in human colorectal cancer is an oligoclonal process [abstract]. In: Proceedings of the AACR Special Conference on Colorectal Cancer; 2022 Oct 1-4; Portland, OR. Philadelphia (PA): AACR; Cancer Res 2022;82(23 Suppl_1):Abstract nr B032." @default.
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- W4311093062 date "2022-12-01" @default.
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- W4311093062 title "Abstract B032: Native sgRNA capture and sequencing (NSC-seq) reveals tumor formation in ApcMin/+ mice and in human colorectal cancer is an oligoclonal process" @default.
- W4311093062 doi "https://doi.org/10.1158/1538-7445.crc22-b032" @default.
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