Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
J BUON. 2020 Mar-Apr;25(2):1212-1218.
To investigate the anti-cancer efficacy of hyperthermic Ag and Au Fe3O4 core nanoparticles via cytotoxicity study (MTT assay) and the underlying molecular mechanism of action (changes in gene expression via quantitive real time PCR (qRT-PCR).
HEK293, HCT116, 4T1 and HUH7 human cell lines and 4T1 musculus mammary gland cell line were incubated with Fe3O4 core Ag(Au) shell nanoparticles (NPs) prior to a hyperthermia session. MTT assay was performed to estimate the cytotoxic effects of these NPs. RNA extraction and cDNA synthesis followed so as to quantify mRNA fold change of hsp-70, p53, bcl-2 and casp-3 via qRT-PCR.
Fe3O4 core Au shell (concentrations of 400 and 600μg/mL) produced the greatest reduction of viability on HCT116 and 4T1 cells while Fe3O4 core Ag shell (200, 400 and 600μg/mL) reduce viability on HUH7 cells. Hsp-70, p53 and casp-3 were up-regulated while bcl-2 was downregulated in most cases.
Fe3O4 core Ag (Au) shell induced apoptosis on cancer cells (HCT116 and HUH7) via the p53/bcl-2/casp-3 pathway. 4T1 cells also underwent apoptosis via a p53-independent pathway.
通过细胞毒性研究(MTT 测定法)和潜在的作用分子机制(通过定量实时 PCR(qRT-PCR)检测基因表达变化)来研究热疗 Ag 和 Au Fe3O4 核纳米粒子的抗癌功效。
在进行热疗之前,将 HEK293、HCT116、4T1 和 HUH7 人细胞系和 4T1 肌肉乳腺细胞系与 Fe3O4 核 Ag(Au)壳纳米粒子(NPs)孵育。进行 MTT 测定法以评估这些 NPs 的细胞毒性作用。提取 RNA 并合成 cDNA,然后通过 qRT-PCR 定量 hsp-70、p53、bcl-2 和 casp-3 的 mRNA 倍数变化。
Fe3O4 核 Au 壳(浓度为 400 和 600μg/mL)对 HCT116 和 4T1 细胞产生最大的细胞活力降低,而 Fe3O4 核 Ag 壳(200、400 和 600μg/mL)降低 HUH7 细胞的活力。在大多数情况下,hsp-70、p53 和 casp-3 上调,而 bcl-2 下调。
Fe3O4 核 Ag(Au)壳通过 p53/bcl-2/casp-3 途径诱导癌细胞(HCT116 和 HUH7)凋亡。4T1 细胞也通过 p53 非依赖性途径发生凋亡。