Lopinavir Derivative as Potent P-gp Inhibitor Enables Delivery through HPMA Copolymer Conjugates and Overcoming Tumor Chemoresistance to Conventional Cytostatic Drugs. - Starenko D; Kostka L; Behalova K; Kotrchova L; Subr V; Kovarova J; Roubalova R; Sirova M; Etrych T; Kovar M (Biomacromolecules, 2026)