The invention discloses preparation and application of
macrophage targeting nanoparticles entrapped with a
cell burial function
accelerant. The
medicine for enhancing the intercellular function of the macrophages is a
liver X receptor stimulant, and the
liver X receptor stimulant comprises at least one of T0901317, GW3965, Ouabagenin and LXR-623. The surface of the targeting
nanoparticle is coated with a
macrophage cell membrane, and meanwhile, a
urokinase type
plasminogen activator receptor (uPAR) targeting ligand is modified. The
nanoparticle can be efficiently accumulated at an inflammatory focus part by utilizing a
macrophage cell membrane, and the modified targeting ligand is used for targeting the macrophage with damaged
cell burial function, so that the
cell burial function of the macrophage is enhanced, the polarization of the macrophage to an anti-inflammatory
phenotype is promoted, the release of anti-inflammatory and proinflammatory cytokines is regulated, and the anti-inflammatory effect of the
nanoparticle is improved. And finally, the inflammatory microenvironment of a focus part is regulated and controlled, so that a good effect of treating autoimmune diseases is achieved.