報告題目:Development of a New Ionization Source for Single Cell Metabolome Analysis
報告摘要
Although the unrevealing of cellular heterogeneity is limiting for the understanding of complex processes in cancer research as e.g. its influence on the process of metastasising, current research still depends on bulk analysis technologies as no reliable method could be established for real single cell metabolome analysis yet.
The necessary analytical requirements that such a method for single cell metabolome analysis needs in terms of detection limit, sample amount and specificity will be discussed in detail in this presentation. Also, still unsolved problems will be addressed and put up for discussion.
Subsequently, our current work on an ion source, which should be able to destroy the cell and thus release the analytes and ionize them by means of Dielectric Barrier Discharge, will be presented. The current status of developments from the literature and from us will be briefly presented in this talk.
個人簡介
In 2009 Oliver J. Schmitz got a full professor in Analytical Chemistry at the University of Wuppertal (BUW). Between 2010 and 2012 he was the chair of the Analytical Chemistry department at BUW. Since 2013, Schmitz has been a full professor at the University of Duisburg-Essen and heads the Institute for Applied Analytical Chemistry.
2009 he cofounded the company iGenTraX UG which develops new ion sources and units to couple separation techniques with mass spectrometers. In 2011 he was one of the founding directorsof the Interdisciplinary Centre for Pure and Applied Mass Spectrometry, University of Wuppertal. Since 2013, Schmitz is also one of the chairmen of the analytica conferences in China and Vietnam and in 2018, together with Agilent Technologies, he founded the Teaching and Research Center for Separation (TRC).
The research fields of Prof. Schmitz are the development of ion sources, use and optimization of multi-dimensional LC and GC, ion mobility-mass spectrometry and coupling analytical techniques with mass spectrometers. Furthermore, he is working about origin of life and metabolomics. Prof. Schmitz was awarded the scholar-in-training award of the American Association for Cancer Research in 2003, the Gerhard-Hesse Prize for chromatography in 2013 and in the same year the Fresenius Lecturer. 2018 he was awarded with the Waksmundzki Medal Award for Analytical Chemistry of the Polish Academy of Sciences.
馬光輝
中國科學院院士
美國醫學與生物工程院(AIMBE)fellow
中國科學院過程工程研究所研究員
生化工程國家重點實驗室主任
中國顆粒學會副理事長
中國化學會會士
中國化工學會會士
中國微米納米技術學會會士
中國化工學會生物化工專業委員會副主任委員
中國生物工程學會生物基材料專業委員會主任委員
報告題目:新型分離介質的制備和蛋白藥/疫苗純化應用Preparation of Novel Microspheres for Protein / Vaccine Separation Application
Polysaccharide particles such like agarose particles have been widely used in protein separation and purification as chromatographic packing materials by biological scientists and in industry. However, the limitation of conventional agarose particles is that the separation resolution is limited due to their broad size distribution. Furthermore, the particles with large size are usually used for industrial separation and purification to avoid the increase of back-pressure, which also limit the separation resolution. On the other hand, the particulate vaccine such like virus-like particle (VLP) has attracted more and more attention, conventional agarose particles with small pore size not only limited the adsorption of VLP, but also enhanced the disassociation of VLP, resulting very low activity recovery of VLP.We have developed a novel membrane process to prepare uniform agarose particle. By this technique we can control the CV (coefficient of variation) value which representing the size distribution around 15%, and we can prepare small uniform particles with high agarose concentration. Therefore, we can use small particles instead of large particles, and increase the separation resolution and flow rate of chromatography. We have developed a new process to prepare giga-porous particle with pore size controllable between 100nm to 500 nm, and we found that it not only increased the loading amount of VLP, but also avoided the disassociation of VLP. This was because large pore size weakened the multi-site interaction between VLP and pore. This novel particle has been used for production of particulate vaccine instead of ultra-high speed centrifugation technique, much higher recovery was achieved.