Study on Multifunctional Composite Nanomaterials for Controlled Drug Release in Biomedicine

Nanoscience is a highly comprehensive, interdisciplinary discipline based on many advanced science and technology, and has developed very rapidly in the past few decades. Nanoscience and technology has been widely used in many fields such as biomedicine, materials science, chemistry, physics, and electronic information engineering. Nanomaterials are widely used due to their many excellent properties such as quantum size effects, small size effects, surface effects, and tunneling effects, and have become hot research areas. It is very suitable as a carrier for antitumor drug molecules, which is conducive to improving drug efficacy and reducing drugs side effects. After selective functionalization, it is highly possible to achieve the loading and release of multiple drug molecules. Based on the magnetic mesoporous Fe₃O₄-MSNs composite nanoparticles, we have modified a series of organosilane coupling agents on its surface. The most commonly used antitumor drug (adriamycin) in clinical was selected as a model to evaluate the loading and release behavior of modified composite nanoparticles Fe₃O₄-MSNs on this drug. The results indicate that Fe₃O₄ is selectively modified after appropriate modification of the silane coupling agent. MSNs carrier can effectively regulate the adsorption and release rate of hydrophilic DOX and hydrophobic PTX, and shows a good drug control ability.