Gastroenterology

Chromosome Engineering of Human Colon-Derived Organoids to Develop a Model of Traditional Serrated Adenoma

Traditional serrated adenomas (TSAs) are rare colorectal polyps with unique histologic features. Fusions in R-spondin genes have been found in TSAs, but it is not clear whether these are sufficient for TSA development, due to the lack of a chromosome engineering platform for human tissues. We studied the effects of fusions in R-spondin genes and other genetic alterations found in TSA using CRISPR-Cas9–mediated chromosome and genetic modification of human colonic organoids.

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