The invention relates to a preparation method of a difunctional mesoporous
silicon ball composite
targeted drug delivery system, and belongs to the field of nanobiomedicine. The method comprises the steps that a
coprecipitation method is adopted for preparing superpara
magnetism Fe3O4 nanoparticles, then, hexadecyl trimethyl
ammonium bromide is used as a template, a
photosensitizer is doped, accordingly, the surfaces of the
magnetic nanoparticles and the
photosensitizer are wrapped by a layer of
mesoporous silica, covalent linkage and physical absorption of anti-
cancer medicine are achieved, finally,
surface modification is carried out through
folic acid and
hyaluronic acid, and the difunctional mesoporous
silicon ball composite
targeted drug delivery system is obtained. According to the
system, multiple effects of nuclear
magnetism radiography,
fluorescence imaging,
magnetic hyperthermia, photoactive therapy and
chemotherapy are integrated, diagnosis and treatment are integrated, magnetic targeting and FA / HA dual
receptor-mediated targeting effect can more effectively enhance the targeting combination of the
medicine and
tumor cells, the effective concentration of the
medicine in the tumor parts is improved, effect enhancement and
toxicity reduction are achieved, the killability for the
cancer cells is enhanced through dual
drug loading, and the
treatment effect on tumors is remarkably improved. The product obtained through the preparation method has a quite large application prospect in the field of medicine
control release.