TY - JOUR ID - 88803 TI - The Synergistic Cytotoxic Effect of Laser-Irradiated Gold Nanoparticles and Sorafenib Against the Growth of a Human Hepatocellular Carcinoma Cell Line JO - Asian Pacific Journal of Cancer Prevention JA - APJCP LA - en SN - 1513-7368 AU - Ebrahim, Haidy M AU - El-Rouby, Mahmoud N AU - Morsy, Mona E AU - Said, Mahmoud M AU - Ezz, Magda K AD - Department of Cancer Biology, National Cancer Institute (NCI), Cairo University, Giza, Egypt. AD - Department of Medical Applications, National Institute of Laser-Enhanced Science, Cairo University, Giza, Egypt. AD - Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt. Y1 - 2019 PY - 2019 VL - 20 IS - 11 SP - 3369 EP - 3376 KW - Gold Nanoparticles KW - sorafenib KW - photothermal therapy KW - Hepatocellular carcinoma DO - 10.31557/APJCP.2019.20.11.3369 N2 - Gold nanoparticles are the most promising candidate in cancer treatment due to their physiochemical properties and increased use in photothermal therapy (PTT). In the present study, spherical gold nanoparticles (AuNPs) were synthesized using citrate reduction method. The particles were then characterized using UV-VIS spectroscopy and transmission electron microscope. A hepatocellular carcinoma cell line (HepG2) was incubated with sorafenib and/or non-irradiated or laser-irradiated AuNPs for 48 hrs. The cytotoxic effect of different treatment modalities was determined using MTT assay. Furthermore, apoptosis was determined by flow cytometry using annexin V/propidium iodide, as well as estimating the level of caspases. Results showed that AuNPs and sorafenib reduced HepG2 cell viability, and the cytotoxicity was associated with increased release of LDH in the culture medium. The recorded cytotoxicity was attributed to enhanced apoptosis as revealed by increased cellular caspases (3, 8 and 9), that was further confirmed by flow cytometry. The most notable cytotoxic effect was recorded when combining sorafenib with laser-irradiated AuNPs. In conclusion, a synergistic cytotoxic effect was observed between sorafenib and laser-irradiated AuNPs against the growth of HepG2, suggesting the potential substitution of large toxic doses of sorafenib by lower doses in combination with photothermal therapy. UR - https://journal.waocp.org/article_88803.html L1 - https://journal.waocp.org/article_88803_b5093a34347c2acf3babf597d5d5c278.pdf ER -