Rapid analysis of glycerophospholipids in RAW264.7 macrophage with UHPLC-QTOF/MS

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 10mmol·L^-1 ammonium acetate and 0.25% acetic acid) and (B) acetonitrile/isopropanol (1∶1) (containing 10mmol·L^-1 ammonium acetate and 0.25% acetic acid). A total of 82 glycerophospholipids including 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.