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Chemo-Photothermal Combination Therapy of HER-2 Overexpressing Breast Cancer Cells with Dual-Ordered Mesoporous Carbon@Silica Nanocomposite

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Abstract

In cancer treatment, the complexity of tumors seriously affects the therapeutic potential of the treatment. Treatments with combination therapy result in more potent effects than monotherapy or their theoretical combination in cancer treatment. Photothermal therapy (PTT) includes applying phototherapeutic agents that cause local hyperthermia responsible for the thermal ablation of tumor cells after applying near-infrared light and is often applied with other combination therapies. In this study, the chemo-PTT potential of synthesized drug-loaded and targeted GEM/TRA-MC@Si nanocomposite on Her2 positive breast cancer cell line (SK-BR-3) and human triple-negative breast cancer cell line (MDA-MB-231) was investigated using NIR application as in vitro. First, the cell viability (IC50) value of the GEM/TRA-MC@Si nanocomposite was determined as 25 µg/µL. Then, chemo-PTT was performed, and the viability of the cells was evaluated. In addition, the live/dead cell rate was established by staining with the Calcein-AM and EthD-1, and apoptosis tests were completed. When the surface temperature of Her2 positive SK-BR-3 cells exceeded 47 °C during PTT with an irradiation time of > 100 s, it caused cell death. In this study, it was demonstrated that in vitro PTT (1 W/cm2, 180 s) was applied using GEM/TRA-MC@Si nanocomposite (25 µg/mL) on her2 + SK-BR-3 cell line, which contributed to the reduction of cell viability. In addition, this study demonstrates that chemo-PTT with targeted GEM/TRA-MC@Si nanocomposite induced SK-BR-3 cell viability and can initiate cell death through the apoptosis pathway under optimized irradiation conditions. Herewith chemo-PTT combination therapy of targeted GEM-TRA/MC@Si nanocomposite was found to be effective on SK-BR-3 cells as in vitro.

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Acknowledgements

The authors kindly thank Fiber Last cooperation (Ankara/Turkey) for providing the laser device. Also, we are grateful to Ege University Planning and Monitoring Coordination of Organizational Development and the Directorate of Library and Documentation for their support in the editing and proofreading service of this study.

Funding

Financial support was provided by Ege University Scientific Research Projects (BAP) Coordinator ship (Project Number: FDK-2020–21380) and the Scientific and Technical Research Council of Turkey (TÜBİTAK) with 2211-C and 2214-A coded doctoral research support (grant number, respectively: 1649B031802269 and 1059B141801597).

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  1. Department of Nuclear Applications, Institute of Nuclear Science, Ege University, Bornova, 35100, Izmir, Turkey

    Ayça Tunçel & Fatma Yurt

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FY: writing—review and editing, resources, supervision, project administration, funding acquisition. AT: conceptualization, investigation, data curation, formal analysis, writing—original draft, validation, methodology, software.

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Tunçel, A., Yurt, F. Chemo-Photothermal Combination Therapy of HER-2 Overexpressing Breast Cancer Cells with Dual-Ordered Mesoporous Carbon@Silica Nanocomposite. Appl Biochem Biotechnol 195, 1904–1927 (2023). https://doi.org/10.1007/s12010-022-04235-6

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