Green-synthesized silver nanoparticles from peel extract of pumpkin as a potent radiosensitizer against triple-negative breast cancer (TNBC)
Makaleler > Tam Makale · 2024
Yazarlar: Soheila Montazersaheb, Azız EFTEKHARIMEHRABAD, Amir Shafaroodi, Soodeh Tavakoli, Sara Jafari, Ayşe Baran, Mehmet Fırat Baran, Sevda Jafari, Elham Ahmadian
CANCER NANOTECHNOLOGY, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Scopus, 2024, cilt 15, ss 47-47
DOI: 10.1186/s12645-024-00285-z
Özet
Background: Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer. Radiation therapy (RT) is a modality for TNBC management. Radiosensitizers can mitigate the adverse effects of RT. Applying green-synthesized silver nanoparticles (Ag-NPs) from biological sources such as plants is a potential strategy to sensitize cancer cells to radiotherapy due to the low toxicity. Therefore, identifying novel natural sources for synthesizing stable and broadly applicable green-Ag-NPs has gained more attention in cancer therapy. In the present study, we synthesized green- Ag-NPs from pumpkin peel extract and elucidated the impact of green-synthesized Ag-NPs as a radiosensitizer in MDA-MB 231 cells (a model of TNBC). Results: The prepared Ag-NPs had a spherical shape with an average size of 81 nm and a zeta potential of − 9.96 mV. Combination of green-synthesized Ag-NPs with RT exhibited synergistic anticancer effects with an optimum combination index (CI) of 0.49 in MDA-MB-231 cells. Green-synthesized Ag-NPs synergistically potentiated RT-induced apoptosis in MDA-MB-231 cells compared to the corresponding monotherapies. Morphological features of apoptosis were further confirmed by the DAPI–TUNEL staining assay. HIF-1α expression was decreased in cells subjected to combination therapy. Bax and p53 expression increased, whereas Bcl-2 genes decreased. Combination therapy significantly increased the protein level of PERK and CHOP while decreasing cyclin D1 and p-ERK/total ERK levels compared to monotherapies. Conclusion: These findings indicate the potential effect of green-synthesized Ag-NPs as a radiosensitizer for TNBC treatment. Graphical Abstract: (Figure presented.)