Hydrophobic Refinement of Polarity-Switchable Lipo-Xenopeptides Modulates Endosomal Escape and Enhances mRNA Delivery In Vitro and In Vivo. - Burghardt T; Thalmayr S; Obeser L; Pöhmerer J; Yazdi M; Höhn M; Völkl M; Sieber-Schäfer F; Zahler S; Merkel OM; Merk D; Wagner E (Journal of the American Chemical Society, 2026)