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  • Title: Folate decorated epigallocatechin-3-gallate (EGCG) loaded PLGA nanoparticles; in-vitro and in-vivo targeting efficacy against MDA-MB-231 tumor xenograft.
    Author: Kazi J, Sen R, Ganguly S, Jha T, Ganguly S, Chatterjee Debnath M.
    Journal: Int J Pharm; 2020 Jul 30; 585():119449. PubMed ID: 32464231.
    Abstract:
    Epigallocatechin-3-gallate (EGCG), a major polyphenolic constituent of green tea exhibits significant anti-cancer potential over a wide range of cancer cells. We have developed folate peptide decorated PLGA-NPs loaded with EGCG (FP-EGCG-NPs) to bind folate receptor (FR) specific breast cancer cell lines and evaluated their efficacy in pre-clinical studies. EGCG loaded PLGA nanoparticles (EGCG-NPs) were characterised for size, surface morphology, surface charge, encapsulation efficacy and in-vitro drug release kinetics. Cellular uptake and in-vitro cytotoxicities of free drug, folate peptide conjugated and unconjugated EGCG-NPs were investigated against FR positive MDA-MB-231 and MCF-7 cells. The conjugated nanoparticles exhibited promising cytotoxic potentials as well as significantly high cellular internalisation in MDA-MB-231 cells as compared to unconjugated one. It also ensured longer half life, higher plasma concentration, favourably high apoptotic potential and significantly high mitochondrial depolarization effect as compared to free EGCG. The loaded nanoparticles were radiolabeled with technetium-99m and their tumor selectivity in MDA-MB-231 tumor bearing nude mice was investigated by scintigraphic imaging study. Finally in-vivo therapeutic efficacy studies in tumor bearing nude mice were also done to evaluate the efficacy of the formulation for cancer treatment.
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