Schematic illustration of the nanocomposites (LIRA/CA@Zein/RLs) accelerating LIRA oral absorption by facilitating trans-mucus and trans-epithelial permeability. AÂ The preparation of LIRA/CA@Zein/RLs by self-assembly of zein using anti-solvent precipitation method. BÂ In the gastrointestinal tract, zein, CA, and RLs worked cooperatively: zein slowed down the pepsin and pancreatin degradation; CA could enhance trans-mucus and trans-epithelium efficiency of LIRA when RLs mainly stabilized the NPs and improved transcytosis