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Papel de dissialogangliosídios na proliferação e morte celular induzida de melanócitos e melanomas in vitro / Role of disialogangliosides in proliferation and induced cell death of melanocytes and melanomas in vitro
São Paulo; s.n; 2005. [215] p. ilus, tab, graf.
Thèse Dans Portugais | LILACS | ID: lil-433567
RESUMO
Dissialogangliosídios, como GD3 e derivados são marcadores da progressão de melanomas. Para avaliar as possíveis funções desta molécula, transfectamos células de melanócitos com o gene da enzima ST8Sia I, que converte GM3 em GD3. Mostramos que GD3 não interfere na capacidade proliferativa dessas células, porém a expressão de GD3 mostrou-se associada à sobrevivência celular. Melanomas adquirem autonomia quanto às vias dependentes do fator de crescimento de fibroblastos (FGF-1 e -2) / Disialoganglioside GD3 and its derivatives are melanoma progression markers. To evaluate the possible roles of these molecules along melanoma progression, we have transfected the GD3 synthase gene (ST8Sia I) in a melanocyte cell line. Accumulation of GD3 did not confer any proliferative advantage to melanocytes. However, GD3 expression was associated with cell survival. The autonomic growth of melanomas is in part related to a constitutive activation of fibroblast growth factor dependent pathways. GD3 expression did not alter the proliferative response to either FGF-1 or FGF-2...
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Texte intégral: Disponible Indice: LILAS (Amériques) Sujet Principal: Division cellulaire / Gangliosides / Mélanome langue: Portugais Année: 2005 Type: Thèse

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Texte intégral: Disponible Indice: LILAS (Amériques) Sujet Principal: Division cellulaire / Gangliosides / Mélanome langue: Portugais Année: 2005 Type: Thèse