Quantification of proteins and metabolites by mass spectrometry without isotopic labeling or spiked standards

被引：506

作者：

Wang, WX ^{[1
]}

Zhou, HH ^{[1
]}

Lin, H ^{[1
]}

Roy, S ^{[1
]}

Shaler, TA ^{[1
]}

Hill, LR ^{[1
]}

Norton, S ^{[1
]}

Kumar, P ^{[1
]}

Anderle, M ^{[1
]}

Becker, CH ^{[1
]}

机构：

[1] SurroMed Inc, Mountain View, CA 94043 USA

来源：

ANALYTICAL CHEMISTRY | 2003年 / 75卷 / 18期

关键词：

D O I：

10.1021/ac026468x

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new method is presented for quantifying proteomic and metabolomic profile data by liquid chromatography-mass spectrometry (LC-MS) with electrospray ionization. This biotechnology provides differential expression measurements and enables the discovery of biological markers (biomarkers). Work presented here uses human serum but is applicable to any fluid or tissue. The approach relies on linearity of signal versus molecular concentration and reproducibility of sample processing. There is no use of isotopic labeling or chemically similar standard materials. Linear standard curves are reported for a variety of compounds introduced into human serum. As a measure of analytical reproducibility for proteome and metabolome sampling, median coefficients of variation of 25.7 and 23.8%, respectively, were determined for similar to3400 molecular ions (not counting their numerous isotopes) from 25 independently processed human serum samples, corresponding to a total of 85 000 individual molecular ion measurements.

引用

页码：4818 / 4826

页数：9

共 30 条

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