DNA Typewriter Records Cell History in Early Mouse Embryo
Scientists have developed a 'DNA Typewriter' technology to record the developmental history of cells in a mouse embryo. By inserting a recording device into the genome, researchers can track cell lineages and ancestry to better understand genetic disorders and cancer.
Why it matters
This breakthrough provides a new method for mapping biological development, which could lead to significant advancements in treating congenital malformations and complex diseases.
Scientists have succeeded in reconstructing the family tree of cells in a developing mouse embryo. They recorded cells' relationships, starting when the fertilized egg first split in two and ending after the body with organs took shape. That period lasted 13.5 days. (Full gestation in mice is 19 to 21 days.)
The study results will appear Thursday, Oct. 8, 2026 in Science.
"We are interested in tracking how cells' early ancestry in an embryo influences their later fates. Exploring cell lineages helps decode normal development. Such research could eventually advance knowledge about congenital malformations, neurodevelopmental conditions, genetic disorders or cancer," said Dr. Jay Shendure , professor of genome sciences at the University of Washington School of Medicine in Seattle and a Howard Hughes Medical Institute Investigator.
He and Dr. Chengxiang Qiu , a molecular and systems biologist at Dartmouth College in New Hampshire, are co-senior authors of the Science paper.
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