Lipid nanoparticles (LNPs) act as carriers for mRNA and CRISPR payloads across a wide range of therapeutic applications, from cancer to inflammatory and genetic diseases. The same delivery system used in COVID‑19 vaccines is now being adapted for other, more complex targets, but one challenge persists: LNPs transfer their cargo into cells far more readily in the lab than in the body. What makes in vivo delivery so much harder? A new study from Biohub may have uncovered a surprisingly simple way around this barrier. From Science Translational Medicine, in a paper titled “Amino acid supplementation enhances in vivo efficacy of lipid nanoparticle‑mediated mRNA delivery in preclinical models,” the team reports that co‑injecting three common amino acids with LNPs dramatically boosts both mRNA delivery and CRISPR gene editing efficiency. “Gene editing and mRNA‑based therapies will play increasing roles in the medicine of the future, but they require LNPs to reach and enter cells,” said Shana O. Kelley, PhD, president of bioengineering at Biohub and head of Biohub Chicago, in a press release. “Any LNP formulation being developed today could potentially benefit from our approach.” Rather than redesigning the nanoparticles themselves—a major focus of the field—the researchers asked: Could the body’s own metabolic environment be making cells less receptive to LNP fusion? “By asking why LNPs perform so differently in the physiological milieu of the body, we found a surprisingly simple answer that could make a wide range of mRNA and gene editing therapies substantially more effective,” said Daniel Zongjie Wang,…
