采用超高效液相色谱-四级杆飞行时间高分辨质谱联用技术(UHPLC-QTOF/MS)对RA264.7巨噬细胞甘油磷脂成分进行结构推断,运用修饰后的Bligh-Dyer法提取甘油磷脂,以流动相A:水(含10 mmol·L-(-1)乙酸铵和0.25%乙酸),流动相B:乙腈-异丙醇(1∶1)(含10 mmol·L-(-1)乙酸铵和0.25%乙酸)进行梯度洗脱,在ESI正负离子模式下进行数据采集。本实验推断出82个甘油磷脂成分,其中包括57个磷脂酰胆碱(PCs)、21个磷脂酰乙醇胺(PEs)、3个磷脂酰甘油(PGs)和1个磷脂酰肌醇(PI)。本文建立的基于UHPLC-QTOF/MS液质联用技术的RAW264.7巨噬细胞甘油磷脂类成分分析方法快速、简便、可靠。
An ultra performance liquid chromatography tandem quadrupole time-of-flight mass spectrometric method was developed for rapid analysis of glycerophospholipids in RAW264.7 macrophage. The modified Bligh-Dyer was applied to extract glycerophospholipids from RAW264.7 macrophage. The target compounds, detected by mass spectrometry in ESI+ and ESI mode, were separated by gradient elution with mobile phase (A) water (containing 10 mmol·L-1 ammonium acetate and 0.25% acetic acid) and (B) acetonitrile/isopropanol (1 : 1) (containing 10 mmol·L-1 ammonium acetate and 0.25% acetic acid). A total of 82 glycerophospholipids in- cluding 57 phosphatidylcholines (PCs), 21 phosphatidylethanolamines (PEs), three phosphatidylglycerols (PGs) and one phosphatidylinositol (PI) were deduced. The UHPLC-QTOF/MS method is rapid, simple and credible for targeting analysis of glycerophospholipids of RAW264.7 macrophage.