Scientific Breakthrough Enables Human Chromosome Engineering Through Cross-Species Method

Researchers at the UKRI-Medical Research Council's Laboratory of Molecular Biology in Cambridge have developed a novel technique for manipulating human chromosomes. The method involves transferring human chromosomes into mouse cells for modification, then returning them to human cells while maintaining structural integrity. This approach, detailed in a recent Science publication, addresses previous challenges in genome engineering due to human chromosomes' complexity and fragility. The work supports the SynHG project, a Wellcome-funded initiative developing tools for synthetic human genomes. Researchers Jason Chin and Julian Sale led the study, which successfully demonstrated the process with chromosomes 4 and 21. The technique enables safer genetic modifications by isolating chromosomes in mouse cells, preventing unintended changes to functioning human genomes. Future applications may include therapeutic cell development and large-scale genome synthesis, though ethical considerations are being examined through parallel research at the University of Kent.