A silica-gold core-shell structure to mimic the large size of gold particles for promoting cell growth: A comparative study of the silica core size and the nanogold amount in the shell
文献类型：期刊论文
| 作者 | Li, Xiaoqin; Li, Jinru; Jiang, Long |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2014-10-05 |
| 卷号 | 459页码:211-216 |
| 关键词 | Silica Substrate Sio2@aunps Hela Cell Cell Proliferation |
| ISSN号 | 0927-7757 |
| DOI | 10.1016/j.colsurfa.2014.07.013 |
| 英文摘要 | Recently, the biosafety of gold nanomaterials has attracted more attention. Some consider them as an adverse factor for cell growth, whereas others regard them as biocompatible. In this work, we reported a type of silica-gold core-shell structure (SiO2@AuNPs) with the diameter more than 70 nm that could promote cell growth. The synthesis of SiO2@AuNPs adopted a step-by-step protocol involving the fabrication of silica substrate followed by their amination, the attachment of fine (about 4 nm) gold seeds, and the formation of a gold shell by reducing HAuCl4 on seeds. The cell viability experiment indicated that AuNPs attached to silica substrate could promote the growth of HeLa cell. With increasing concentration of SiO2@AuNPs or the content of gold shell, the viability of co-cultured HeLa cells also increased; on the contrary, acute cytotoxicity was observed when pure 4 nm AuNPs were added. Moreover, we found that the proliferative effect could be enhanced by enlarging the size of silica substrate. Due to large SiO2@AuNPs not entering the cell, their nano-size concavo-convex surface was facilitated to cell adhesion, probably leading to the proliferation of HeLa cells. However, detailed mechanism responsible for cell growth is still unclear and it requires more studies. Although the mechanism remains enigmatic, the findings may have practical significance for cell proliferation, which is in great demand in numerous fields such as tissue engineering. In addition, the core-shell materials were characterized by scanning electron microscope (SEM) and energy-dispersive X-ray spectrum (EDX), and the cell viability was measured by Cell Counting Kit-8 (CCK-8). (C) 2014 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000341877600028 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/51323]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Jiang, Long |
| 作者单位 | Chinese Acad Sci, Inst Chem, Key Lab Colloids & Interface Sci, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiaoqin,Li, Jinru,Jiang, Long. A silica-gold core-shell structure to mimic the large size of gold particles for promoting cell growth: A comparative study of the silica core size and the nanogold amount in the shell[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2014,459:211-216. |
| APA | Li, Xiaoqin,Li, Jinru,&Jiang, Long.(2014).A silica-gold core-shell structure to mimic the large size of gold particles for promoting cell growth: A comparative study of the silica core size and the nanogold amount in the shell.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,459,211-216. |
| MLA | Li, Xiaoqin,et al."A silica-gold core-shell structure to mimic the large size of gold particles for promoting cell growth: A comparative study of the silica core size and the nanogold amount in the shell".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 459(2014):211-216. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。