Abstract
Purpose
In this study, tocopherol based polymeric micelles were successfully prepared to enhance the anticancer effect of fisetin (FIS) in breast cancer cells.
Methods
The drug-loaded carrier was characterized in terms of physicochemical and in vivo parameters.
Results
Compared to FIS, FIS-TPN showed higher cellular uptake in MCF-7 breast cancer cells as revealed by CLSM and flow cytometry. The cytotoxicity assay results clearly showed that the free FIS and FIS-TPN exhibited a typical dose-dependent toxic effect in MCF-7 breast cancer cells. Especially, enhanced cytotoxic effect of FIS was observed when loaded in a nanocarrier. Free FIS induced a ~11% apoptosis whereas FIS-TPN induced a significantly greater apoptosis of ~20% by the end of 24 h. At 48 h, similar trend continued and free FIS showed ~30% of apoptosis whereas ~42% cell apoptosis was observed in FIS-TPN treated group. Notably, migration of cancer cell was significantly inhibited when treated with FIS-TPN formulations. The FIS-TPN significantly reduced to tumor burden and H&E staining showed the lowest tumor volume and higher cell apoptosis.
Conclusions
All the findings suggest that the fisetin-loaded TPGS-PLA polymeric micelles serve as a potential candidate and promising alternative for the effective treatment of breast cancers.
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Abbreviations
- DLS:
-
Dynamic might scattering
- EPR:
-
Enhanced permeation and retention effect
- FIS:
-
Fisetin
- FIS-TPN:
-
Fisetin-loaded TPGS/PLA nanoparticles
- NP:
-
Nanoparticles
- PLA:
-
Poly(lactide)
- TPGS:
-
D-α-tocopheryl polyethylene glycol 1000
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ACKNOWLEDGMENTS AND DISCLOSURES
The study was supported from the Research Grant of Xinxiang Medical University, PR. China.
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Wang, L., Zhang, DZ. & Wang, YX. Bioflavonoid Fisetin Loaded α-Tocopherol-Poly(lactic acid)-Based Polymeric Micelles for Enhanced Anticancer Efficacy in Breast Cancers. Pharm Res 34, 453–461 (2017). https://doi.org/10.1007/s11095-016-2077-z
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DOI: https://doi.org/10.1007/s11095-016-2077-z