Abstract
Cancer has become a solemn threat to the life of human beings universally. Various strategies are available to steadfastness cancer; however they are not so effective owed to their serious side effects, noxious effect to healthy cells and non- specificity to cancer cells targeting. To tenacity above facts we try to deed inherent characters of cancer cells. HA was used as a targeting agent for drug delivery to breast cancer cells. In this work nanoparticles were equipped using chitosan and sodium tripolyphosphate encapsulating methotrexate. Methotrexate (Mtx) a folic acid antagonist that inhibits dihydrofolatereductase (DHFR) and blocks conversion of dihydrofolic acid (DHFA) to tetrahydrofolic acid (THFA) of the cell cycle. Chitosan anchored nanoparticles were prepared by ionotropic gelation method by means of sodium tripolyphosphate and evalauted for in-vitro drug release study with dialysis membrane. Result depicts that drug releases from chitosan nanoparticles in sustained manner over a prolonged episode of time from the NPs as the medium acidity enhanced at the target site, not in plasma. In conclusion, chitosan anchored nanoparticles of MTX could be well thought-out as probable candidate for drug delivery in the treatment of breast cancer.
 Keywords: Breast cancer, Methotrexate, Chitosan, TPP and Nanoparticles.
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