Department of Integrated Traditional Chinese and Western Medicine, The Henan Cancer Hospital, Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, Henan 450008, China,
Int J Nanomedicine. 2019 Mar 15;14:1969-1978. doi: 10.2147/IJN.S188235. eCollection 2019.
Tremendous growth in nanotechnology has opened up new frontiers in fundamental and applied aspects, including the synthesis of nanoscale matter and understanding/utilizing its exotic physicochemical and optoelectronic properties. Green-synthesis methods employing either biological microorganisms or plant extracts have emerged as a simple and alternative to chemical synthesis.
In our present study, we aimed to synthesize silver nanoparticles (AgNPs) in combination with an aqueous extract of (CC) using a suitable ecofriendly green-synthesis way.
In our results, ultraviolet-visible spectroscopy revealed a near-absorbance peak at 450 nm, which confirmed the AgNP synthesis. The crystalline nature of the AgNPs was revealed with X-ray diffraction. Transmission electron-microscopy analysis showed spherically dispersed nanoparticles of 6-45 nm diameter. We analyzed the elementary mechanism across A549 lung carcinoma cells ahead of treatment with doses of CC-AgNPs (10 µg/mL and 25 µg/mL). The antiproliferative effect of CC-AgNPs revealed a significant decline in cell viability. Antibacterial assays with both Gram-negative () and Gram-positive () bacteria exhibited a higher zone of inhibition against .
Furthermore, CC-AgNPs regulated apoptosis using the intrinsic pathway to inhibit A549-cell proliferation. Proliferation migration and invasion were notably inhibited by CC-AgNPs, which promoted apoptosis in lung adenocarcinoma cells by regulating the apoptotic pathway.
纳米技术的飞速发展为基础和应用领域开辟了新的前沿,包括纳米物质的合成以及对其奇异物理化学和光电特性的理解/利用。采用生物微生物或植物提取物的绿色合成方法已经成为化学合成的一种简单替代方法。
在本研究中,我们旨在使用合适的环保绿色合成方法,将银纳米粒子(AgNPs)与(CC)的水提取物结合合成。
在我们的结果中,紫外-可见光谱在 450nm 附近显示出一个吸收峰,这证实了 AgNP 的合成。AgNPs 的晶体性质通过 X 射线衍射显示出来。透射电子显微镜分析显示出直径为 6-45nm 的球形分散纳米粒子。我们在使用 CC-AgNPs(10µg/mL 和 25µg/mL)进行治疗之前,分析了 A549 肺癌细胞的基本机制。CC-AgNPs 的抗增殖作用显示出细胞活力显著下降。对革兰氏阴性()和革兰氏阳性()细菌的抗菌试验显示,对的抑制作用更高。
此外,CC-AgNPs 通过内在途径调节细胞凋亡,抑制 A549 细胞增殖。CC-AgNPs 显著抑制增殖、迁移和侵袭,通过调节凋亡途径促进肺腺癌细胞凋亡。