Amino Acid Supplement Boosts mRNA and CRISPR Therapy Delivery Up to 20-Fold
Researchers discovered that adding three common amino acids to lipid nanoparticles dramatically improves mRNA and CRISPR gene editing delivery, boosting efficiency up to 20-fold and raising gene editing success rates from 25% to nearly 90%.
Researchers at the Biohub have discovered that adding a simple mix of three common amino acids - methionine, arginine, and serine - can dramatically improve the efficiency of lipid nanoparticles (LNPs) in delivering mRNA and CRISPR gene editing payloads. The amino acid supplement boosted mRNA delivery up to 20-fold and lifted CRISPR gene editing from 25% to nearly 90% in a single dose, potentially transforming the outlook for these emerging therapies.
The study was published on March 11, 2026 in Science Translational Medicine.
The researchers found that cells cultured in lab conditions that mimic the body's metabolic environment had a much harder time taking up LNPs compared to standard cell culture media. Further analysis revealed that certain amino acid pathways were suppressed in these physiologically-relevant conditions, hampering the cells' ability to internalize the nanoparticles.
By supplementing the LNP formulations with an optimized mix of methionine, arginine, and serine, the team was able to boost mRNA delivery 5- to 20-fold and lift CRISPR gene editing efficiency from around 25% to 85-90% in a single dose, across multiple administration routes and cell types.
The president of bioengineering at Biohub and head of Biohub, Chicago stated that 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. Any LNP formulation being developed today could potentially benefit from this approach.
The lead researcher of the Spatiotemporal Omics Group at Biohub noted that by asking why LNPs perform so differently in the physiological milieu of the body, they found a surprisingly simple answer that could make a wide range of mRNA and gene editing therapies substantially more effective.
Gene editing and mRNA therapies hold immense promise, but their success has been limited by the challenge of effectively delivering these payloads into cells. This discovery provides a straightforward solution that could make a wide range of mRNA and gene editing treatments substantially more effective, paving the way for breakthroughs in areas like cancer, inflammatory diseases, and genetic disorders.
The researchers plan to further investigate the mechanism behind the amino acid supplement's ability to enhance LNP delivery and explore its potential applications in a range of mRNA and gene editing therapies.