Even if RNA-based therapeutics have been under development for over 30 years, it was the COVID-19 pandemic that brought them into the limelight, with the rapid development of mRNA-based vaccines against the SARS-Cov2 virus by Moderna and BioNTech/Pfizer. And lipid Nanoparticles (LNPs), used to efficiently deliver mRNA, are key players of this technology.