Abstract | BACKGROUND: METHODS: RESULTS: All cell lines expressed GM(2) and sLe antigens. When compared with age- and gender-matched volunteers, patients had significantly higher serum levels of total gangliosides (25.6 +/- 9.0 mg/dL vs. 15.6 +/- 2.7 mg/dL; P < 0.001), GM(2) (0.278 +/- 0.415 mg/dL vs. 0.013 +/- 0.018 mg/dL; P = 0.02), ELISA units of anti-GM(2) IgM antibody (368 +/- 95 vs. 155 +/- 25; P = 0.04) and anti-GD(1b) IgM antibody (351 +/- 91 vs. 138 +/- 26; P = 0.03), but not anti- sLe(x) IgM (1389 +/- 345 vs. 1081 +/- 224; P = 0.46) or anti-sLe(a) IgM antibody (1097 +/- 253 vs. 1200 +/- 315; P = 0.80). Patients with unresectable tumors had higher serum levels of total gangliosides compared with patients with resectable tumors, and a serum level > 25 mg/dL was found to correlate significantly with poor overall survival (P < 0.02). CONCLUSIONS: Increased serum levels of total gangliosides and GM(2) may reflect shedding or release of gangliosides from the surface of tumor cells. Production of IgM antibody against GM(2) and GD(1b) indicates that these gangliosides are immunogenic antigens that may be potential targets for effective active immunotherapy.
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Authors | K U Chu, M H Ravindranath, A Gonzales, K Nishimoto, W Y Tam, D Soh, A Bilchik, N Katopodis, D L Morton |
Journal | Cancer
(Cancer)
Vol. 88
Issue 8
Pg. 1828-36
(Apr 15 2000)
ISSN: 0008-543X [Print] United States |
PMID | 10760759
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, P.H.S.)
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Copyright | Copyright 2000 American Cancer Society. |
Chemical References |
- Gangliosides
- Immunoglobulin M
- G(M2) Ganglioside
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Topics |
- Adenocarcinoma
(immunology, physiopathology, therapy)
- Adult
- Aged
- Aged, 80 and over
- Enzyme-Linked Immunosorbent Assay
- Female
- G(M2) Ganglioside
(blood, immunology)
- Gangliosides
(blood, immunology)
- Humans
- Immunoglobulin M
(analysis)
- Immunotherapy
- Male
- Middle Aged
- Pancreatic Neoplasms
(immunology, physiopathology, therapy)
- Tumor Cells, Cultured
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