Glycolipid composition in bladder tumor: a crucial role of GM3 ganglioside in tumor invasion.
Int J Cancer
; 94(3): 343-7, 2001 Nov 01.
Article
en En
| MEDLINE
| ID: mdl-11745412
Glycolipids were extracted from primary bladder tumors of 14 patients and 2 normal counterparts. Their expression pattern was assessed by thin-layer chromatography (TLC). The most remarkable change was massive accumulation of GM3 in superficial bladder tumors compared with invasive tumors. This change was also confirmed by immunohistochemistry using anti-GM3 monoclonal antibody. The activities of glycosyltransferases responsible for GM3 synthesis (GM3 synthase, Gb3 synthase and GD3 synthase) were consistent with upregulated expression of GM3 in superficial tumors. It was suggested that the marked GM3 accumulation in superficial tumors was caused not only by upregulated GM3 synthase but also by downregulated activities of Gb3 and GD3 synthase. Histopathologic examination revealed an inverse correlation of the amount of GM3 expressed with invasive potential. Exogenously supplemented GM3 suppressed invasion potential in human bladder tumor cell lines (T-24, KK-47). These results indicate that the amount of GM3 expressed may serve as an indicator of the invasion potential of bladder tumor. Furthermore, new antiinvasion therapeutics may be possible by administration of GM3.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Neoplasias de la Vejiga Urinaria
/
Glucolípidos
/
Gangliósido G(M3)
Límite:
Aged
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Int J Cancer
Año:
2001
Tipo del documento:
Article
País de afiliación:
Japón
Pais de publicación:
Estados Unidos