发明公开
EP2722673A1 Improved method of mapping glycans of glycoproteins 有权
Verbessertes Verfahren zum Mapping von Glycanen von糖蛋白

  • 专利标题: Improved method of mapping glycans of glycoproteins
  • 专利标题(中): Verbessertes Verfahren zum Mapping von Glycanen von糖蛋白
  • 申请号: EP12188904.2
    申请日: 2012-10-17
  • 公开(公告)号: EP2722673A1
    公开(公告)日: 2014-04-23
  • 发明人: Higel, FabianSeidl, Andreas
  • 申请人: Hexal AG
  • 申请人地址: Industriestrasse 25 83607 Holzkirchen DE
  • 专利权人: Hexal AG
  • 当前专利权人: Hexal AG
  • 当前专利权人地址: Industriestrasse 25 83607 Holzkirchen DE
  • 代理机构: Dörries, Hans Ulrich
  • 主分类号: G01N33/68
  • IPC分类号: G01N33/68
Improved method of mapping glycans of glycoproteins
摘要:
The present invention uses anthranilic acid (2-AA) to label N-glycans prior to separation using a reversed-phase liquid chromatography (RP-LC) column under acidic conditions using formic acid. Negatively charged 2-AA offers stronger retention on the reversed phase column than 2-aminobenzamide (2-AB) in RP-LC and allows efficient ionization and detection of 2-AA labeled N-glycans. The acidic conditions used for the RP-LC leads to an efficient separation of acidic 2-AA N-glycans carrying terminal sialylation without the need for an ion-pairing reagent.
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