Identification of Carcinogen DNA Adducts in Human Saliva by Linear Quadrupole Ion Trap/Multistage Tandem Mass Spectrometry
作者:Erin E. Bessette、Simon D. Spivack、Angela K. Goodenough、Tao Wang、Shailesh Pinto、Fred F. Kadlubar、Robert J. Turesky
DOI:10.1021/tx100098f
日期:2010.7.19
DNA adducts of carcinogens derived from tobacco smoke and cooked meat were identified by liquid chromatography−electrospray ionization/multistage tandem mass spectrometry (LC-ESI/MS/MSn) in saliva samples from 37 human volunteers on unrestricted diets. The N-(deoxyguanosin-8-yl) (dG-C8) adducts of the heterocyclic aromatic amines 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), 2-amino-9H-pyrido[2
通过液相色谱-电喷雾电离/多级串联质谱 (LC-ESI/MS/MS n ) 在来自 37 名无限制饮食的人类志愿者的唾液样本中鉴定了源自烟草烟雾和熟肉的致癌物的 DNA 加合物。杂环芳香胺 2-amino-1-methyl-6-phenylimidazo[4,5- b ]pyridine (PhIP), 2-amino-9 H的N -(deoxyguanosin-8-yl) (dG-C8) 加合物-吡啶并[2,3- b ]吲哚(AαC)、2-氨基-3,8-二甲基咪唑[4,5- f ]喹喔啉(MeIQx)和芳香胺4-氨基联苯(4-ABP)是通过 LC-ESI/MS/MS n 进行表征和定量,在 MS 3处采用连续反应监测使用线性四极杆离子阱 (LIT) 质谱仪 (MS) 的扫描阶段模式。PhIP 的 DNA 加合物最常被发现:dG-C8-PhIP 在 29 名曾经吸烟者中有 13 名的唾液样本和