Worldwide, the estimated 5-year prevalence for all cancers is 50·5 million. The number of cancer survivors is growing due to aging populations and improved early detection and treatment. Yet current m...

The CDC said Thursday that the mutations, detected in a sample taken from a Louisiana patient, may help bind the virus to the upper airways in people.

Using an AI tool, researchers at Karolinska Institutet have analysed brain images from 70-year-olds and estimated their brains’ biological age. They found that factors detrimental to vascular health, ...

Systemic delivery of large nucleic acids, such as mRNA, to the brain remains challenging in part due to the blood-brain barrier (BBB) and the tendency of delivery vehicles to accumulate in the liver. Here, we design a peptide-functionalized lipid nanoparticle (LNP) platform for targeted mRNA delivery to the brain. We utilize click chemistry to functionalize LNPs with peptides that target receptors overexpressed on brain endothelial cells and neurons, namely the RVG29, T7, AP2, and mApoE peptides. We evaluate the effect of LNP targeting on brain endothelial and neuronal cell transfection in vitro, investigating factors such as serum protein adsorption, intracellular trafficking, endothelial transcytosis, and exosome secretion. Finally, we show that LNP peptide functionalization enhances mRNA transfection in the mouse brain and reduces hepatic delivery after systemic administration. Specifically, RVG29 LNPs improved neuronal transfection in vivo, establishing its potential as a nonviral platform for delivering mRNA to the brain.