The invention discloses
metal organic framework nanoparticles for oral
protein administration and a preparation method of the
metal organic framework nanoparticles, and belongs to the technical field of
pharmaceutics. The
metal organic framework nanoparticles provided by the invention can promote oral absorption of
protein / polypeptide with the molecular weight of at most 10000 Daltons. The
metal organic framework nano-particle is prepared by loading a nano-scale acid-resistant
metal organic framework with a
small molecule protein / polypeptide
drug through hydrophobic interaction and modifying a targeting molecule on the surface of the nano-scale acid-resistant
metal organic framework. The porous acid-resistant metal organic framework shows high
drug loading capacity and strong protectiveness to protein, and shows good
biocompatibility and sustained and
controlled release kinetics in vivo. The targeting molecule can target a
receptor on an intestinal epithelial
cell membrane, the problem that the
permeation efficiency of protein in an intestinal epithelial
cell layer is extremely low is solved, and the oral
bioavailability of the protein is improved. The preparation method is simple and convenient, the production cost is low, and painless, controlled-release and convenient protein
oral administration is expected to be realized.