科创中国

Identification of TRAK1 (Trafficking protein, kinesin-binding 1) as MGb2-Ag: A novel cancer biomarker

• 摘要：

  The present study aimed to describe the characterization of an antibody MGb2 that reacts with an epitope on gastric cancer cells, and identification of MGb2 antigen (MGb2-Ag). Immunostaining revealed its distribution in human tissues and demonstrated that the positive rate of MGb2-Ag was 81.48% in gastric cancer, 100% in gastric signet-ring cell carcinoma and mucinous adenocarcinoma, 13.16% in precancerous conditions, and 0% in chronic superficial gastritis. Using Western blotting, immunoprecipitation and MALDI-TOF MS (matrix assisted laser desorption/ionization time-of-flight mass spectrometry), MGb2-Ag was identified as TRAK1 (Trafficking protein, kinesin-binding 1), a new molecular gained limited recognition. Both MGb2 and commercial anti-TRAK1 Ab recognized prokaryotic expressed TRAK1. Immunostaining characteristics of TRAK1 were identical with MGb2-Ag in continuous sections of paraffin-embedded tissues of gastric tissues. This is the first report that TRAK1/MGb2-Ag is a promising diagnostic marker for gastric cancer and may help to detect signet-ring cell carcinoma and mucinous adenocarcinoma. © 2008 Elsevier Ireland Ltd. All rights reserved.

• 作者：

  Zhang Faming;Ren Gui;Lu Yuanyuan;Jin Bin;Wang Jun;Chen Xiong;Liu Zhenxiong;Li Kai;Nie Yongzhan;Wang Xin;Fan Daiming

• 刊名：

  Cancer Letters

• 在线出版时间：

  2009