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Article Abstract
Cancer is one of the major causes of increased morbidity and mortality in modern society. Colorectal cancer is the third leading cause for cancer related death worldwide. Current chemotherapeutics are not very effective and have severe side effects. Hesperetin is a bioflavonoid from citrus fruits and its clinical use is restricted because of the poor water solubility. Folate receptor is overexpressed in various cancer cells. Therefore, we synthesized the chitosan folate hesperetin nanoparticle (CFH) by covalently conjugating folic acid with chitosan molecules. The size of the CFH nanoparticles is around 450nm, which is advantageous for passively targeting the cancer cell specifically due to the leaky vasculature of the tumour. Particle surface and size were observed using SEM and TEM studies. The results show that hesperetin has an IC50 value of 190μM and it induces apoptosis in HCT15 cells, however, CFH is very potent in inhibiting the proliferation with the IC50 value of 28μM. In addition, CFH inhibited colony formation and induced apoptosis by regulating the expression of proapoptotic genes expression. Therefore, the chitosan - folic acid conjugation appears to be the suitable carrier for colorectal cancer cell-specific delivery of hesperetin.
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| http://dx.doi.org/10.1016/j.ijbiomac.2017.10.064 | DOI Listing |
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