报告题目:Biosensors based on aptamers and gold nanoparticles
报告时间:2024年5月13日 10:30-11:30
报告地点:16-921会议室
报告人:刘珏文
报告人简介:
刘珏文,加拿大滑铁卢大学化学系教授,博士生导师,加拿大皇家学会青年院士。2000年获得中国科学技术大学化学学士学位,2005年获美国伊利诺伊大学(UIUC)化学系博士学位(导师Yi Lu教授),2005-2007年继续在Dr. Yi Lu实验室进行博士后工作,2007-2009年在美国新墨西哥大学和Sandia国家实验室进行基于介孔氧化硅的药物传递系统的博士后研究工作(导师C. Jefferey Brinker教授,美国工程院院士),2009年加入滑铁卢大学,任化学系教授。主要从事核酸对纳米材料的功能化修饰和核酸适配体生物传感器在医疗诊断、环境监测、食品安全等领域的应用研究,发表期刊研究论文400余篇,包括Acc. Chem. Res., Chem. Rev., PNAS, J. Am. Chem. Soc., Angew. Chem. Int. Ed.等,引用数超过40000余次,h-index高达103,2022, 2023年入选科睿唯安(Clarivate)“高被引科学家”。因在生物分析化学方面的突出贡献,曾获加拿大化学会Fred Beamish奖(2014)和McBryde Medal奖(2018)等多项奖励。现担任Biosensors & Bioelectronics杂志编委和Trends in Analytical Chemistry(TrAC)特约编辑。
报告简介:
Interfacing DNA with gold nanoparticles (AuNPs) has produced a diverse range of biosensors, imaging agents, drug delivery systems, and new materials. AuNPs are particularly attractive because of their low toxicity and unique optical, electric and catalytic properties. Using fluorescently labeled oligonucleotides as probes, we measured the kinetics of DNA adsorption, desorption as well as adsorption isotherm as a function of salt, pH, and temperature. An important application of such fundamental studies is the attachment of DNA to AuNPs. Highly efficient DNA adsorption can be achieved at low pH and freezing. In addition, we studied aptamer-based sensors using AuNPs for signal production and revealed some potential artifacts. In the second part of the talk, our recent work on selection of DNA aptamers for binding to small molecular targets will be presented.
代表性论文:
1. Angew. Chem. Int. Ed. 2024, 63, e202314450.
2. Chem. Rev.2017, 117, 8272.
3. J. Am. Chem. Soc. 2023, 145, 7540.
4. J. Am. Chem. Soc. 2020, 142, 14702.
5. Angew. Chem. Int. Ed. 2023, 62, e202212879.