摘要
Gelatin as one kind of nano-drug carrier is a polysaccharide which can be absorbed after releasing all nano-drugs.Poly(ethylene glycol)as a polymer material that can modify nano-drugs is able to extend circulatory time of doxorubicin and aspirin,enhance stability and reduce toxicity.At precancerous,aspirin will be released slowly to resist inflammation.When tumor cell appears at a more advance stage,doxorubicin release from Gel to achieve anti-tumor effect.After all those steps,poly(ethylene glycol)could be expelled from body.In brief,the nano-drug that has doxorubicin and aspirin is able to prevent the growth of tumor cells and kill them when they appear more precisely.