TY - JOUR
T1 - Analysis of the antibody response to immunization with purified O‐acetyl GD3 gangliosides in patients with malignant melanoma
AU - Ritter, Gerd
AU - Ritter‐Boosfeld, Erika
AU - Adluri, Rita
AU - Calves, Michele
AU - Ren, Shunlin
AU - Yu, Robert K.
AU - Oettgen, Herbert F.
AU - Old, Lloyd J.
AU - Livingston, Philip O.
PY - 1995/9/15
Y1 - 1995/9/15
N2 - Gangliosides expressed in malignant melanoma are potential targets for immunotherapy. Immunization of melanoma patients with vaccines containing purified GM2 ganglioside has resulted in induction of GM2 antibodies, and high titers of GM2 antibodies have correlated with increased survival. Melanoma ganglioside 9‐O‐acetyl GD3 is another candidate for ganglioside vaccine construction because of its limited expression in normal human tissues. As purification of 9‐O‐acetyl GD3 from human melanoma (9‐O‐acetylated on the terminal sialic acid) is not practical for broad application, we investigated the antibody response of melanoma patients to O‐acetyl GD3 from several additional sources: hamster melanoma (7‐O‐acetyl GO3), bovine buttermilk (mixture of 7‐O‐acetyl GD3, 9‐O‐acetyl GD3 and 7,9‐di‐O‐acetyl GD3) and chemically modified GD3 from bovine brain (9‐O‐acetylated on the subterminal sialic acid). Only immunization with the buttermilk‐derived O‐acetyl GD3 preparation resulted in consistent production of IgM antibodies. However, the induced antibodies reacted with the immunogen and with 7‐O‐acetyl GO3 derived from hamster melanoma but not with 9‐O‐acetyl GD3 or human melanoma cells expressing 9‐O‐acetyl GD3 on their cell surface. In contrast, all O‐acetyl GD3 derivatives used for immunization were recognized by murine MAbs that reacted with 9‐O‐acetyl GD3, and immunization of mice with buttermilk‐derived O‐acetyl GD3 resulted in the production of antibodies that reacted with human melanoma cells expressing 9‐O‐acetyl GD3. Apparently, the human and murine immune systems preferentially recognize different epitopes on these molecules. © 1995 Wiley‐Liss, Inc.
AB - Gangliosides expressed in malignant melanoma are potential targets for immunotherapy. Immunization of melanoma patients with vaccines containing purified GM2 ganglioside has resulted in induction of GM2 antibodies, and high titers of GM2 antibodies have correlated with increased survival. Melanoma ganglioside 9‐O‐acetyl GD3 is another candidate for ganglioside vaccine construction because of its limited expression in normal human tissues. As purification of 9‐O‐acetyl GD3 from human melanoma (9‐O‐acetylated on the terminal sialic acid) is not practical for broad application, we investigated the antibody response of melanoma patients to O‐acetyl GD3 from several additional sources: hamster melanoma (7‐O‐acetyl GO3), bovine buttermilk (mixture of 7‐O‐acetyl GD3, 9‐O‐acetyl GD3 and 7,9‐di‐O‐acetyl GD3) and chemically modified GD3 from bovine brain (9‐O‐acetylated on the subterminal sialic acid). Only immunization with the buttermilk‐derived O‐acetyl GD3 preparation resulted in consistent production of IgM antibodies. However, the induced antibodies reacted with the immunogen and with 7‐O‐acetyl GO3 derived from hamster melanoma but not with 9‐O‐acetyl GD3 or human melanoma cells expressing 9‐O‐acetyl GD3 on their cell surface. In contrast, all O‐acetyl GD3 derivatives used for immunization were recognized by murine MAbs that reacted with 9‐O‐acetyl GD3, and immunization of mice with buttermilk‐derived O‐acetyl GD3 resulted in the production of antibodies that reacted with human melanoma cells expressing 9‐O‐acetyl GD3. Apparently, the human and murine immune systems preferentially recognize different epitopes on these molecules. © 1995 Wiley‐Liss, Inc.
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U2 - 10.1002/ijc.2910620604
DO - 10.1002/ijc.2910620604
M3 - Article
C2 - 7558412
AN - SCOPUS:0029131343
SN - 0020-7136
VL - 62
SP - 668
EP - 672
JO - International Journal of Cancer
JF - International Journal of Cancer
IS - 6
ER -