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题名: Online Integration of Multiple Sample Pretreatment Steps Involving Denaturation, Reduction, and Digestion with Microflow Reversed-Phase Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry for High-Throughput Proteome Profiling
作者: Ma, Junfeng1, 2;  Liu, Jinxiang1, 2;  Sun, Liangliang1, 2;  Gao, Liang1, 2;  Liang, Zhen1;  Zhang, Lihua1;  Zhang, Yukui1
刊名: ANALYTICAL CHEMISTRY
发表日期: 2009-08-01
DOI: 10.1021/ac900971w
卷: 81, 期:15, 页:6534-6540
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: A facile integrated platform for proteome profiling was established, in which native proteins were online denatured and reduced within a heater, digested with an immobilized trypsin microreactor, and analyzed by microflow reversed-phase liquid chromatography with electrospray ionization tandem mass spectrometry (mu RPLC-ESI-MS/MS). In comparison to the traditional off-line urea denaturation protocol, even more unique peptides were obtained by online heating in triplicate (14 +/- 2 vs 11 +/- 2 for myoglobin and 16 vs 12 +/- 1 for BSA) within a significantly shortened pretreatment time of similar to 3.5 min (including 1 min of thermal denaturation and reduction and similar to 2.5 min of microreactor digestion). Moreover, proteins with concentrations ranging from 50 ng/mL (similar to 6 fmol) to 1 mg/mL (similar to 120 pmol) were positively identified by the online system. Such a platform was further successfully applied for analyzing the soluble fraction of mouse liver extract. Of all the 367 proteins identified from samples pretreated by the urea protocol and online heating, similar to 40% were overlapped, showing the partial complementation of both approaches. All these results demonstrate that the online integrated platform is of great promise for high-throughput proteome profiling and improved identification capacity for low-abundance proteins with a minute sample amount.
关键词[WOS]: IMMOBILIZED ENZYME REACTORS ;  TRYPSIN DIGESTION ;  IDENTIFICATION ;  PROTEINS ;  MICROREACTOR ;  SEPARATION ;  MS/MS ;  CAPILLARIES ;  PROTEOLYSIS ;  EFFICIENT
语种: 英语
WOS记录号: WOS:000268455600073
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141597
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog Res & Anal Ctr, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Ma, Junfeng,Liu, Jinxiang,Sun, Liangliang,et al. Online Integration of Multiple Sample Pretreatment Steps Involving Denaturation, Reduction, and Digestion with Microflow Reversed-Phase Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry for High-Throughput Proteome Profiling[J]. ANALYTICAL CHEMISTRY,2009,81(15):6534-6540.
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