Human eggs made from a volunteer\u2019s skin DNA were fertilized in the lab on September 30, 2025, and some grew for nearly a week.<\/p>\n
A peer-reviewed study<\/a> reports that early embryos formed, although most stalled because their chromosomes did not sort cleanly.<\/p>\n \u2026<\/p>\n The research was led by Shoukhrat Mitalipov, director of the OHSU Center for Embryonic Cell and Gene Therapy (OHSU<\/a>) and colleagues at Oregon Health & Science University.<\/p>\n Follow the latest news and policy debates on sustainable agriculture, biomedicine, and other \u2018disruptive\u2019 innovations. Subscribe to our newsletter.<\/p>\n The researchers used somatic cell nuclear transfer to put the nucleus from an adult skin cell into a donor human egg whose own nucleus had been removed. <\/p>\n [Scientists] used a body cell to reset development, proving that mature DNA can be reprogrammed to act as if it came from a newly formed\u00a0egg<\/a>. They then pushed this hybrid egg to act like a natural egg.<\/p>\n \u2026<\/p>\n Fertilization followed by electrical pulses and a cell cycle drug helped eggs shed extra chromosomes.<\/p>\n \u2026<\/p>\n If chromosome control can be tamed, in vitro gametogenesis (IVG<\/a>) could help women who no longer have viable eggs, after cancer therapy or age-related decline.<\/p>\n