Journal
INTERNATIONAL JOURNAL OF NANOMEDICINE
Volume 11, Issue -, Pages -Publisher
DOVE MEDICAL PRESS LTD
DOI: 10.2147/IJN.S95440
Keywords
multifunctional nanoparticles; silver nanoparticles; cancer therapy; drug delivery; photodynamic therapy; nanocomposites
Funding
- Institute for Functional Nanomaterials (NSF) [1002410]
- PR NASA EPSCoR (NASA) [NNX15AK43A]
- PR NASA Space Grant Consortium at University of Puerto Rico-Bayamon Campus (PRNSGC - UPRB)
- U54 UPR-MD Anderson Cancer Center Partnership Program (National Cancer Institute) [U54 CA096297/CA096300]
- UPR GK-12 Fellowship Program (NSF) [0841338]
- NATIONAL CANCER INSTITUTE [U54CA096300, U54CA096297] Funding Source: NIH RePORTER
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The combination of chemotherapy and photodynamic therapy has emerged as a promising strategy for cancer therapy due to its synergistic effects. In this work, PEGylated silver nanoparticles decorated with graphene quantum dots (Ag-GQDs) were tested as a platform to deliver a chemotherapy drug and a photosensitizer, simultaneously, in chemo-photodynamic therapy against HeLa and DU145 cancer cells in vitro. Ag-GQDs have displayed high efficiency in delivering doxorubicin as a model chemotherapy drug to both cancer cells. The Ag-GQDs exhibited a strong antitumor activity by inducing apoptosis in cancer cells without affecting the viability of normal cells. Moreover, the Ag-GQDs exhibited a cytotoxic effect due to the generation of the reactive singlet oxygen upon 425 nm irradiation, indicating their applicability in photodynamic therapy. In comparison with chemo or photodynamic treatment alone, the combined treatment of Ag-GQDs conjugated with doxorubicin under irradiation with a 425 nm lamp significantly increased the death in DU145 and HeLa. This study suggests Ag-GQDs as a multifunctional and efficient therapeutic system for chemo-photodynamic modalities in cancer therapy.
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