%0 Journal Article
%T Fast separation and preparation of proteomics samples of human serum using high performance hydrophobic interaction chromatographic cake<br>疏水型色谱饼对人血清蛋白质组学样品的快速分离与制备
%A LI Ying
%A BAI Quan
%A CHEN Gang
%A WANG Lili
%A <br>李瑛
%A 白泉
%A 陈刚
%A 王骊丽
%J 色谱
%D 2008
%I 
%X A method for the fast separation of human serum and enrichment of low abundance proteins was developed using offline 2D liquid chromatography (2D-LC) consisted of chromatographic cake (10 mm x 20 mm i. d.) and reversed-phase liquid chromatography (RPLC). The protein after separation and enrichment was detected using matrix assisted laser desorption/ ionization time of flight mass spectrometry (MALDI-TOF MS). This method was validated by four standard proteins at very low concentration. It was found that the detection limits were 1 pmol/microL for the enriched cytochrome-c and myoglobin, and 0.1 pmol/microL for enriched lysozyme and insulin. This method has been applied to the proteomic research of human serum, and it was found that the signal intensity and the number of detected proteins/peptides in MALDI-TOF MS increased with the increase of the loading sample volume of the human serum on chromatographic cake. A total of 285 fractions (M(r) < 15 000) were found when 1.0 mL serum sample was loaded on the chromatographic cake. In addition, cytochrome-c in low abundance was also separated and enriched successfully when 1 microg cytochrome-c was added into 0.5 mL original serum. The results showed that 2D-LC consisting of the chromatographic cake and RPLC was successfully applied to not only the fast separation and preparation of human serum sample with large loading volume in one cycle of analysis, but also the efficient isolation and enrichment of the lower abundance proteins/peptides in human serum. Moreover, it successfully increased the detection efficiency of the low abundance proteins/peptides in human serum with MALDI-TOF MS.
%K 2D-liquid chromatography (2D-LC)&prev_q=2D-liquid chromatography (2D-LC)')">2D-liquid chromatography (2D-LC)" target="_blank">2D-liquid chromatography (2D-LC)')">2D-liquid chromatography (2D-LC)
%K matrix assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF MS)
%K chromatographic cake
%K proteomics
%K human serum&prev_q=')">human serum" target="_blank">')">human serum<br>二维液相色谱
%K 基体辅助激光解吸电离飞行时间质谱
%K 色谱饼
%K 蛋白质组学
%K 人血清
%K 疏水型
%K 色谱饼
%K 血清蛋白质组学
%K 血清样品
%K 快速
%K 分离与制备
%K hydrophobic
%K interaction
%K high
%K performance
%K h
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=4D81E042D77AFEC6881D14759692069C&aid=AE2D4DDC1B5C28DC33F01BF69F26B817&yid=67289AFF6305E306&vid=96C778EE049EE47D&iid=38B194292C032A66&sid=717CC18E05F2AFA0&eid=9DC563A0FEFC04F9&journal_id=1000-8713&journal_name=色谱&referenced_num=0&reference_num=14