Characterization of adducts formed between human serum albumin and the butadiene metabolite epoxybutanediol.

Characterization of adducts formed between human serum albumin and the butadiene metabolite epoxybutanediol.
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人血清白蛋白和丁二烯代谢物环氧丁二醇之间形成的加合物的表征。

DOI:
10.1002/rcm.2086
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发表时间:
2005
期刊:
Rapid communications in mass spectrometry : RCM
影响因子:
--
通讯作者:
A. Cohen
A. Cohen
中科院分区:
--
文献类型:
--
作者:
C. Lindh;M. Kristiansson;Ulrika A Berg;A. Cohen

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1,3-丁二醇(BD)已被列为潜在的人类致癌物。它发生在环境中以及工业环境中。在人体中,BD易于代谢为反应性环氧化物(例如1,2-环氧-3,4-丁二醇)。在这项研究中,人血清白蛋白(HSA)和EBD之间的缀合物的合成(摩尔比为1:600,1:1和1:0.1; HSA/EBD)在生理条件下。用胰蛋白酶消化1:600缀合物和空白HSA样品以获得通过制备液相色谱(LC)分级分离的特异性肽。使用纳米电喷雾四极杆飞行时间质谱法(nanoES-QqTOFMS)分析级分。鉴定加合的HSA胰蛋白酶肽,并通过基于串联质谱法(MS/MS)的序列分析鉴定加合的氨基酸残基。在HSA/EBD缀合物中的23个胰蛋白酶肽上鉴定了总共26个2,3,4-三羟基丁基(THB)加合物。加合的氨基酸为N-末端天冬氨酸残基、6个谷氨酸残基、5个组氨酸残基和14个赖氨酸残基。来自nanoES-QqTOFMS实验的结果用于使用选定的反应监测建立更灵敏的液相色谱/质谱(LC/MS)分析。在1:0.1的HSA/EBD缀合物的胰蛋白酶消化物中可以检测到八种加合肽。
1,3-Butadiene (BD) has been classified as a potential human carcinogen. It occurs in the environment as well as in industrial settings. In humans, BD is readily metabolized to reactive epoxides (e.g. 1,2-epoxy-3,4-butanediol). In this study, conjugates between human serum albumin (HSA) and EBD were synthesized (molar ratios of 1:600, 1:1 and 1:0.1; HSA/EBD) under physiological conditions. The 1:600 conjugate and a blank HSA sample were digested with trypsin to obtain specific peptides that were fractionated by preparative liquid chromatography (LC). The fractions were analyzed using nanoelectrospray quadrupole time-of-flight mass spectrometry (nanoES-QqTOFMS). Adducted HSA tryptic peptides were identified and the adducted amino acid residues were identified by sequence analysis based on tandem mass spectrometry (MS/MS). A total of 26 2,3,4-trihydroxybutyl (THB) adducts were identified on 23 tryptic peptides in the HSA/EBD conjugate. The adducted amino acids were the N-terminal aspartic acid residue, six glutamic acid residues, five histidine residues and 14 lysine residues. Results from the nanoES-QqTOFMS experiments were used to set up a more sensitive liquid chromatographic/mass spectrometric (LC/MS) analysis using selected reaction monitoring. Eight of the adducted peptides could be detected in tryptic digests of the 1:0.1 HSA/EBD conjugate.
通过两种非甾体抗炎药托美丁和佐美拉共价结合修饰的人血清白蛋白的合成和质谱表征。
DOI: 10.1042/bj3110431
发表时间: 1995
期刊: The Biochemical journal
影响因子: --
作者:
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影响因子: 11.1
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DOI: 10.1002/rcm.337
发表时间: 2001
期刊: Rapid communications in mass spectrometry : RCM
影响因子: --
作者:
Cech,NB;Krone,JR;Enke,CG
通讯作者: Enke,CG
DOI: --
发表时间: 1995-03
期刊: Drug metabolism and disposition: the biological fate of chemicals
影响因子: --
作者:
A. Ding;P. Zia‐Amirhosseini;Antony F. McDonagh;A. L. Burlingame;Leslie Z. Benet
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