Special stealth liposomes with a polyethylene glycol (PEG) coating that serves to hide the liposomes from the immune system are injected into mice with tumors (1). There, the PEG covering spontaneously falls off (2), allowing the liposomes to merge with cells and deliver CRISPR-Cas9 gene editing machinery (3). The system is designed to slice the powerful oncogene E7 (4), triggering apoptosis (5) and wiping out the tumors.
KELLY FINAN
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