Morphotypic plasticity in vitro and in nude mice of epithelial mouse mammary cells (NMuMG) displaying an epithelioid (e) or a fibroblastic (f) morphotype in culture.
Clin Exp Metastasis
; 14(3): 282-96, 1996 May.
Article
en En
| MEDLINE
| ID: mdl-8674283
Transition from an epithelioid (e-) to a fibroblastic (f-) morphotype marks invasiveness in clinical and experimental cancer. To understand better the factors influencing such transitions, we have subcloned and manipulated mouse mammary gland (NMuMG) cell cultures and compared the invasive phenotype of multiple subclones in vitro and in vivo. Cell lines with an e-morphotype expressed E-cadherin homogeneously and were not invasive in vitro. Cells with an f-morphotype were E-cadherin-negative and became fully invasive in vitro upon expression of the ras oncogene. Invasive tumors were produced in node mice after subcutaneous injection of e-type or f-type cells. These tumors showed cystic, glandular and undifferentiated structures. Tumors from f-type cells were E-cadherin-negative whereas e-type tumors stained heterogeneously in immunohistochemical preparations. Our observations demonstrate the impact of the micro-ecosystem on the invasive phenotype, with in vivo downregulation of E-cadherin and stimulation of the e- to f-morphotype transition.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Neoplasias Mamarias Animales
/
Glándulas Mamarias Animales
Límite:
Animals
Idioma:
En
Revista:
Clin Exp Metastasis
Asunto de la revista:
NEOPLASIAS
Año:
1996
Tipo del documento:
Article
País de afiliación:
Bélgica
Pais de publicación:
Países Bajos