Retinoic‐Acid‐Derived Ionizable Lipids Enable Spleen‐Selective Antigen Expression for mRNA Cancer Vaccination
A 40-member retinoic-acid-derived ionizable-lipid library yielded AT4-13CRA particles with preferential functional expression in splenic antigen-presenting cells. Researchers linked delivery to altered protein coronas and reduced lysosomal retention. An ovalbumin vaccination model showed stronger antigen-specific immunity and prophylactic tumor protection. The artificial antigen and challenge setting limit direct extrapolation to established human cancers.
DOI: 10.1002/anie.3823572