Bacillus subtilis causes dissolution of ceria nanoparticles at the nano-bio interface
文献类型：期刊论文
| 作者 | Xie, Changjian1,2; Zhang, Junzhe1,2; Ma, Yuhui1; Ding, Yayun1; Zhang, Peng1; Zheng, Lirong3; Chai, Zhifang1; Zhao, Yuliang1; Zhang, Zhiyong1; He, Xiao1 |
| 刊名 | Environmental science-nano
 |
| 出版日期 | 2019 |
| 卷号 | 6期号:1页码:216-223 |
| ISSN号 | 2051-8153 |
| DOI | 10.1039/c8en01002a |
| 通讯作者 | Zhang, zhiyong(zhangzhy@ihep.ac.cn) ; He, xiao(hexiao@ihep.ac.cn) |
| 英文摘要 | The cytotoxicity of ceria nanoparticles (nps) against microorganisms was identified as a particle-specific toxicity in previous work since no release of ce3+ ions was evident. although the literature has demonstrated a reduction of ceria nps after their interaction with bacteria, it remains unknown whether the reduction is followed by a release of ce3+ ions from the particle surface. the present work aims to study whether there is dissolution of ceria nps at the nano-bio interface and evaluate the possible ionic toxicity against bacteria. our results suggest that rod-like ceria nps could be reduced by bacillus subtilis under planktonic conditions, then the ce3+ ions adjacent to the surface oxygen vacancies would be chelated by the adsorption sites on the bacterial cell wall and extracted from the particles. the biosorption of the dissolved ce3+ ions by bacteria is further confirmed by the ce3+ desorption after the protonation of carboxyl groups on the cell wall. therefore, we demonstrate for the first time the dissolution of ceria nps at the bacterial surface as a result of the nano-bio interaction. these findings together reveal a combined mechanism for the toxicity of ceria nps: particle-related delivery of ce to the bacterial surface and ion-related toxicity following the dissolution. this insight would benefit our understanding of the mechanism underlying the cytotoxicity of ceria nps. |
| WOS关键词 | RARE-EARTH-ELEMENTS ; OXIDE NANOPARTICLES ; CEO2 NANOPARTICLES ; ZNO NANOPARTICLES ; ESCHERICHIA-COLI ; TOXICITY ; GROWTH ; SPECIATION ; BIOTRANSFORMATION ; TRANSFORMATION |
| 资助项目 | Ministry of Science and Technology of China[2016YFA0201600] ; National Natural Science Foundation of China[11675190] ; National Natural Science Foundation of China[11575208] ; National Natural Science Foundation of China[11375009] ; Youth Innovation Promotion Association, CAS[2012006] ; Key Laboratory of Biomedical Effects of Nanomaterials and Nanosafety, CAS[NSKF201705] |
| WOS研究方向 | Chemistry ; Environmental Sciences & Ecology ; Science & Technology - Other Topics |
| WOS类目 | Chemistry, Multidisciplinary ; Environmental Sciences ; Nanoscience & Nanotechnology |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000461698700016 |
| 资助机构 | Ministry of Science and Technology of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Key Laboratory of Biomedical Effects of Nanomaterials and Nanosafety, CAS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2160934 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Zhang, Zhiyong; He, Xiao |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, CAS Key Lab Biomed Effects Nanomat & Nanosafety, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, Changjian,Zhang, Junzhe,Ma, Yuhui,et al. Bacillus subtilis causes dissolution of ceria nanoparticles at the nano-bio interface[J]. Environmental science-nano,2019,6(1):216-223. |
| APA | Xie, Changjian.,Zhang, Junzhe.,Ma, Yuhui.,Ding, Yayun.,Zhang, Peng.,...&He, Xiao.(2019).Bacillus subtilis causes dissolution of ceria nanoparticles at the nano-bio interface.Environmental science-nano,6(1),216-223. |
| MLA | Xie, Changjian,et al."Bacillus subtilis causes dissolution of ceria nanoparticles at the nano-bio interface".Environmental science-nano 6.1(2019):216-223. |
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来源：高能物理研究所
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