Assessment of the Toxicity of CuO Nanoparticles by Using Saccharomyces cerevisiae Mutants with Multiple Genes Deleted

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 水生生物分子与细胞生物学研究中心 > 期刊论文

	Assessment of the Toxicity of CuO Nanoparticles by Using Saccharomyces cerevisiae Mutants with Multiple Genes Deleted
	Bao, Shaopan 1,2; Lu, Qicong 1,2; Fang, Tao 1; Dai, Heping 1; Zhang, Chao 1,2
刊名	APPLIED AND ENVIRONMENTAL MICROBIOLOGY
	2015-12-01
卷号	81 期号:23 页码:8098-8107
ISSN号	0099-2240
英文摘要	To develop applicable and susceptible models to evaluate the toxicity of nanoparticles, the antimicrobial effects of CuO nanoparticles (CuO-NPs) on various Saccharomyces cerevisiae (S. cerevisiae) strains (wild type, single-gene-deleted mutants, and multiple-gene-deleted mutants) were determined and compared. Further experiments were also conducted to analyze the mechanisms associated with toxicity using copper salt, bulk CuO (bCuO), carbon-shelled copper nanoparticles (C/Cu-NPs), and carbon nanoparticles (C-NPs) for comparisons. The results indicated that the growth inhibition rates of CuO-NPs for the wild-type and the single-gene-deleted strains were comparable, while for the multiple-gene deletion mutant, significantly higher toxicity was observed (P < 0.05). When the toxicity of the CuO-NPs to yeast cells was compared with the toxicities of copper salt and bCuO, we concluded that the toxicity of CuO-NPs should be attributed to soluble copper rather than to the nanoparticles. The striking difference in adverse effects of C-NPs and C/Cu-NPs with equivalent surface areas also proved this. A toxicity assay revealed that the multiple-gene-deleted mutant was significantly more sensitive to CuO-NPs than the wild type. Specifically, compared with the wild-type strain, copper was readily taken up by mutant strains when cell permeability genes were knocked out, and the mutants with deletions of genes regulated under oxidative stress (OS) were likely producing more reactive oxygen species (ROS). Hence, as mechanism-based gene inactivation could increase the susceptibility of yeast, the multiple-gene-deleted mutants should be improved model organisms to investigate the toxicity of nanoparticles.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Biotechnology & Applied Microbiology ; Microbiology
研究领域[WOS]	Biotechnology & Applied Microbiology ; Microbiology
关键词[WOS]	METAL-OXIDE NANOPARTICLES ; DISSOLVED ORGANIC-MATTER ; CELLS IN-VITRO ; OXIDATIVE STRESS ; CARBON NANOTUBES ; GENOTOXIC AGENTS ; PLASMA-MEMBRANE ; TESTING SYSTEM ; CWP GENES ; YEAST
收录类别	SCI
语种	英语
WOS记录号	WOS:000364775700014
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/27359]
专题	水生生物研究所_水生生物分子与细胞生物学研究中心_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Bao, Shaopan,Lu, Qicong,Fang, Tao,et al. Assessment of the Toxicity of CuO Nanoparticles by Using Saccharomyces cerevisiae Mutants with Multiple Genes Deleted[J]. APPLIED AND ENVIRONMENTAL MICROBIOLOGY,2015,81(23):8098-8107.
APA	Bao, Shaopan,Lu, Qicong,Fang, Tao,Dai, Heping,&Zhang, Chao.(2015).Assessment of the Toxicity of CuO Nanoparticles by Using Saccharomyces cerevisiae Mutants with Multiple Genes Deleted.APPLIED AND ENVIRONMENTAL MICROBIOLOGY,81(23),8098-8107.
MLA	Bao, Shaopan,et al."Assessment of the Toxicity of CuO Nanoparticles by Using Saccharomyces cerevisiae Mutants with Multiple Genes Deleted".APPLIED AND ENVIRONMENTAL MICROBIOLOGY 81.23(2015):8098-8107.