Malik Maqsood Ahmad, Batterjee Maha G, Kamli Majid Rasool, Alzahrani Khalid Ahmed, Danish Ekram Y, Nabi Arshid
Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
J Fungi (Basel). 2022 Jun 16;8(6):639. doi: 10.3390/jof8060639.
In terms of reduced toxicity, the biologically inspired green synthesis of nanoparticles has emerged as a promising alternative to chemically fabricated nanoparticles. The use of a highly stable, biocompatible, and environmentally friendly aqueous extract of as a reducing and capping agent in this study demonstrated the possibility of green manufacturing of silver nanoparticles (CC-AgNPs). UV-visible spectroscopy validated the development of CC-AgNPs, indicating the surface plasmon resonance (SPR) λ band at 438 nm. The band gap of CC-AgNPs was found to be 2.26 eV. SEM and TEM analysis examined the surface morphology of CC-AgNPs, and micrographs revealed that the nanoparticles were spherical. The crystallinity, crystallite size, and phase purity of as-prepared nanoparticles were confirmed using XRD analysis, and it was confirmed that the CC-AgNPs were a face-centered cubic (fcc) crystalline-structured material. Furthermore, the role of active functional groups involved in the reduction and surface capping of CC-AgNPs was revealed using the Fourier transform infrared (FTIR) spectroscopic technique. CC-AgNPs were mostly spherical and monodispersed, with an average size of 26.89 nm, and were shown to be stable for a longer period without any noticeable change at room temperature. Further, we checked the antifungal mechanism of CC-AgNPs against MRL6057. The minimum inhibitory concentrations (MIC) and minimum fungicidal concentrations (MFC) were 50.0 µg/mL and 100.0 µg/mL respectively. The cell count and viability assay confirmed the fungicidal potential of CC-AgNPs. Further, the analysis showed that CC-AgNPs could induce apoptosis and G2/M phase cell cycle arrest in MRL6057. Our results also suggest that the CC-AgNPs were responsible for the induction of mitochondrial toxicity. TUNEL assay results revealed that higher concentrations of CC-AgNPs could cause DNA fragmentation. Therefore, the present study suggested that CC-AgNPs hold the capacity for antifungal drug development against infections.
在降低毒性方面,受生物启发的纳米颗粒绿色合成已成为化学制造纳米颗粒的一种有前景的替代方法。本研究中使用高度稳定、生物相容性好且环境友好的水提取物作为还原剂和封端剂,证明了绿色制造银纳米颗粒(CC-AgNPs)的可能性。紫外可见光谱验证了CC-AgNPs的形成,表明在438nm处有表面等离子体共振(SPR)λ带。发现CC-AgNPs的带隙为2.26eV。扫描电子显微镜(SEM)和透射电子显微镜(TEM)分析检测了CC-AgNPs的表面形态,显微照片显示纳米颗粒为球形。使用X射线衍射(XRD)分析确认了所制备纳米颗粒的结晶度、微晶尺寸和相纯度,并确认CC-AgNPs是面心立方(fcc)晶体结构材料。此外,使用傅里叶变换红外(FTIR)光谱技术揭示了参与CC-AgNPs还原和表面封端的活性官能团的作用。CC-AgNPs大多为球形且单分散,平均尺寸为26.89nm,并且在室温下显示出较长时间的稳定性,没有任何明显变化。此外,我们检查了CC-AgNPs对MRL6057的抗真菌机制。最低抑菌浓度(MIC)和最低杀菌浓度(MFC)分别为50.0μg/mL和100.0μg/mL。细胞计数和活力测定证实了CC-AgNPs的杀菌潜力。此外,分析表明CC-AgNPs可诱导MRL6057细胞凋亡和G2/M期细胞周期阻滞。我们的结果还表明CC-AgNPs可导致线粒体毒性。TUNEL分析结果显示,较高浓度的CC-AgNPs可导致DNA片段化。因此,本研究表明CC-AgNPs具有开发抗感染抗真菌药物的潜力。