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甜菜根提取物介导生物合成的银纳米粒子 (ag-NPs) 对抗人类乳腺癌 (MCF-7)、肺癌 (A549) 和咽癌 (Hep-2) 细胞系的抗癌活性的影响。

The impact of anticancer activity upon Beta vulgaris extract mediated biosynthesized silver nanoparticles (ag-NPs) against human breast (MCF-7), lung (A549) and pharynx (Hep-2) cancer cell lines.

机构信息

Dept of Biotechnology, Vels University, Chennai -600117, Tamil Nadu, India.

Plant Virology and Molecular Pathology Lab, Division of Plant Pathology, SKUAST-K, Srinagar, India.

出版信息

J Photochem Photobiol B. 2017 Aug;173:99-107. doi: 10.1016/j.jphotobiol.2017.05.031. Epub 2017 May 24.

Abstract

The present study tried for a phyto-synthetic method of producing silver nanoparticles (Ag-NPs) with size controlled as and eco-friendly route that can lead to their advanced production with decorative tranquil morphology. By inducing temperature fluctuation of the reaction mixture from 25 to 80°C the plasmon resonance band raised slowly which had an ultimate effect on size and shape of Ag-NPs as shown by UV-visible spectroscopy and TEM results. The biosynthesized nanoparticles showed good cytotoxic impact against MCF-7, A549 and Hep2 cells compared to normal cell lines. Compared to control plates, the percentage of cell growth inhibition was found to be high with as concentrations of Ag-NPs becomes more as determined by MTT assay. The AO/EtBr staining observations demonstrated that the mechanism of cell death induced by Ag-NPs was due to apoptosis in cancer cells. These present results propose that the silver nanoparticles (Ag-NPs) may be utilized as anticancer agents for the treatment of various cancer types. However, there is a need for study of in vivo examination of these nanoparticles to find their role and mechanism inside human body. Further, studies we plan to do biomarker fabrication from the green synthesized plant extract nanoparticles like silver, gold and copper nanoparticles with optimized shape and sizes and their enhancement of these noble nanoparticles.

摘要

本研究尝试采用植物合成方法生产尺寸可控的银纳米粒子 (Ag-NPs),这是一种环保的途径,可以促进其以装饰性的、稳定的形态进行高级生产。通过将反应混合物的温度从 25°C 波动到 80°C,等离子体共振带缓慢升高,这对 Ag-NPs 的尺寸和形状产生了最终影响,这一点可以通过紫外-可见光谱和 TEM 结果看出。与正常细胞系相比,生物合成的纳米粒子对 MCF-7、A549 和 Hep2 细胞表现出良好的细胞毒性影响。通过 MTT 测定,发现随着 Ag-NPs 浓度的增加,细胞生长抑制率也随之升高。AO/EtBr 染色观察表明,Ag-NPs 诱导细胞死亡的机制是癌细胞凋亡。这些结果表明,银纳米粒子 (Ag-NPs) 可能被用作治疗各种癌症类型的抗癌药物。然而,需要对这些纳米粒子进行体内检查研究,以了解它们在人体内的作用和机制。此外,我们计划从绿色合成的植物提取物纳米粒子(如银、金和铜纳米粒子)中制备生物标志物,并优化其形状和尺寸,增强这些贵金属纳米粒子的性能。

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