Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran.
IET Nanobiotechnol. 2023 Jul;17(5):425-437. doi: 10.1049/nbt2.12139. Epub 2023 May 16.
The present research aims to encapsulate lawsone in polylactic-co-glycolic acid (PLGA) nanoparticles modified with folic acid (FA) and chitosan (CS) to study its anticancer effects against Panc-1 cells. The nanoparticles were analysed in means of shape/size and zeta potential index using scanning electron microscope and dynamic light scattering. High-performance liquid chromatography was applied to evaluate the lawsone entrapment efficacy. The authors performed acridine orange/propidium iodide staining and flow cytometry to monitor apoptosis induction and cell cycle arrest. The expressions of apoptosis-related genes (BAX and BCL-2) were assessed by real time PCR. Nanoparticle antioxidative and antibacterial activities were examined by DPPH/ABTS scavenging assay, disk diffusion method, and minimum inhibitory concentration and minimum bactericidal concentration evaluation. The NPs were 229.65 nm, the encapsulation efficiency was 81%. The concentration of lawsone that exerts 50% cell growth inhibition (IC ) against Panc-1 cells was calculated 118.4 μL. Apoptosis induction was evidenced by the increased number of orange cells and increased proportion of cells in G1-Sub phase respectively. Moreover, lawsone-loaded nanoparticle upregulated BAX gene expression, while downregulated BCL2expression, suggesting the activation of apoptotic pathway. The observed cytotoxic/apoptotic properties suggest that Lawson-loaded PLGA-FA-CS-NPs hold a great potential in pancreatic cancer treatment.
本研究旨在将罗望子素包封在聚乳酸-共-羟基乙酸(PLGA)纳米粒中,并用叶酸(FA)和壳聚糖(CS)进行修饰,以研究其对 Panc-1 细胞的抗癌作用。使用扫描电子显微镜和动态光散射对纳米粒的形状/大小和zeta 电位指数进行分析。采用高效液相色谱法评价罗望子素的包封效率。作者通过吖啶橙/碘化丙啶染色和流式细胞术监测细胞凋亡诱导和细胞周期阻滞。通过实时 PCR 评估凋亡相关基因(BAX 和 BCL-2)的表达。通过 DPPH/ABTS 清除试验、圆盘扩散法、最小抑菌浓度和最小杀菌浓度评估评估纳米粒子的抗氧化和抗菌活性。纳米粒的粒径为 229.65nm,包封效率为 81%。对 Panc-1 细胞的 50%细胞生长抑制浓度(IC )计算为 118.4μL。通过橙色细胞数量的增加和 G1-Sub 期细胞比例的增加,证实了细胞凋亡的诱导。此外,载罗望子素的纳米粒上调了 BAX 基因的表达,而下调了 BCL2 表达,提示凋亡途径的激活。观察到的细胞毒性/凋亡特性表明,载罗望子素的 PLGA-FA-CS-NPs 在胰腺癌治疗中具有很大的潜力。
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