Abstract: The present disclosure relates to a tumor-targeted drug delivery system, comprising a tumor-targeted drug carrier and a tumor-treating drug, wherein the tumor-targeted drug carrier comprises full heavy-chain human ferritin. The present disclosure also relates to a method for preparing the tumor-targeted drug delivery system comprising: depolymerizing a polymerized full heavy-chain human ferritin; adding a tumor-treating drug to the depolymerized full heavy-chain human ferritin so as to bind the tumor-treating drug to the depolymerized full heavy-chain human ferritin; and re-polymerizing the depolymerized full heavy-chain human ferritin bound with the tumor-treating drug to form a nanoparticle.

Abstract: The present disclosure relates to a tumor-targeted drug delivery system, comprising a tumor-targeted drug carrier and a tumor-treating drug, wherein the tumor-targeted drug carrier comprises full heavy-chain human ferritin. The present disclosure also relates to a method for preparing the tumor-targeted drug delivery system comprising: depolymerizing a polymerized full heavy-chain human ferritin; adding a tumor-treating drug to the depolymerized full heavy-chain human ferritin so as to bind the tumor-treating drug to the depolymerized full heavy-chain human ferritin; and re-polymerizing the depolymerized full heavy-chain human ferritin bound with the tumor-treating drug to form a nanoparticle.

Abstract: This invention provides a nanozyme immunochromatographic detection method for detecting a substance to be tested in a liquid sample, comprising, in this order, the steps of: 1) providing a detection probe, which is prepared by coupling a magnetic nanoparticle to a first molecule capable of specifically binding to the substance to be tested; 2) providing a capture probe, which is an immobilized second molecule capable of specifically binding to the substance to be tested; 3) bringing the liquid sample into contact with the detection probe; 4) bringing the liquid sample, which has been in contact with the detection probe, into contact with the capture probe; and 5) adding a hydrogen-donor substrate and a peroxide to the capture probe subject to the step 4) so as to perform color development reaction. This invention further provides a nanozyme immunochromatographic detection apparatus for detecting a substance to be tested in a liquid sample.