Researchers at the Chan Zuckerberg Biohub reported that co‑administering a simple three‑amino‑acid cocktail dramatically improved in vivo lipid nanoparticle (LNP) uptake and functional delivery of mRNA and CRISPR payloads. The study, published in Science Translational Medicine, shows that physiological metabolic conditions suppress key amino acid pathways, reducing LNP fusion; short amino acid supplementation restored cellular receptivity and increased editing and expression in preclinical models. Investigators emphasized that the approach does not require reengineering LNP chemistry and could be applied across existing formulations, potentially improving the therapeutic index of numerous RNA programs. The authors recommend further pharmacology and safety studies to define optimal dosing and to assess whether the metabolic modulation alters immune responses or biodistribution in larger animals and humans.