分析测试百科网 认证会员,请放心拨打!
方案文件名 | 下载 |
---|---|
利用组织成像质谱技术分析伊立替康在肝脏和人类肿瘤中的分布 |
下载此篇方案 |
前言:
Purpose: To determine irinotecan metabolites and their distribution in human tumors directly from tissue by MALDI Imaging mass spectrometry. To establish MALDI ion trap technology as ideally suited for direct tissue analysis of drugs in tissue.
Methods: Nude mice with implanted human head and neck tumors were treated with either irinotecan, methylselenocysteine (MSC), both drugs combination, or non-treated (control). Frozen tumors and livers were sliced to ~12μm thick and thaw-mounted on to non-conductive glass slides. Irinotecan metabolites were investigated by Single Reaction Monitoring or CRM with an LTQ XLTM coupled to a MALDI source.
Results: Metabolites previously identified in human urine samples were detected directly off tissue in all irinotecan treated tissues and those with both irinotecan plus MSC. SN-38-G, a known irinotecan metabolite, seems more uniformly distributed in the tumor treated with irinotecan plus MSC.
仪器:
结论: