Purification and partial characterization of a new group of gastric cancer associated antigens

¹Laboratory of Gastroenterology, Xijing Hospital, Xi'an.

|March 1, 1991

Abstract:

The corresponding antigens of MG series monoclonal antibodies (MG5, MG9, MGd1 and MGe1) against gastric cancer were purified and partially characterized. Each of these monoclonal antibodies was purified by passing through a DEAE-52 cellulose columns and covalently coupled with CNBr-activated sepharose 4B successively. By means of concanavalin A and antibody affinity chromatography, the corresponding antigens of MG series McAb were extracted from gastric cancer tissue respectively. Immunological and biochemical studies confirmed that the corresponding antigens of MG series McAb were a new group of gastric cancer associated neutral glycolipid and glycoprotein antigens.

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