Responses of NBT-II bladder carcinoma cells to conditioned medium from normal fetal urogenital sinus.
Cancer Res
; 47(11): 2955-60, 1987 Jun 01.
Article
en En
| MEDLINE
| ID: mdl-3567912
ABSTRACT
In vitro studies were conducted to determine whether conditioned medium from rat fetal urogenital sinus explants would affect phenotypic characteristics of NBT-II urinary bladder carcinoma cells in culture. NBT-II cells were exposed to medium (30%, v/v) conditioned for 48 h by intact urogenital sinus explants derived from 18-day fetal rats. Upon exposure for 23 h the [3H]thymidine incorporation by NBT-II cells was decreased by 40.3% relative to control cultures. This effect was paralleled by a similar decrease in proliferation. NBT-II cultures decreased in cell number by 32.1 and 45.8% on days 2 and 4, respectively, after exposure to conditioned medium. Although cell proliferation was inhibited, conditioned medium acted to induce an increase in protein secretion. An increase of 18.6% was observed in the incorporation of [35S]methionine into newly synthesized, secreted proteins by NBT-II cells exposed to conditioned medium for 23 h. Morphologically the NBT-II cells exposed to conditioned medium were larger, more spread out, and exhibited a greater array of lamellipodia and filopodia, although [35S]methionine incorporation into cellular proteins was decreased by 11.1%. These results suggest that diffusable factors produced by fetal urogenital sinus explants can induce changes in proliferation, protein synthesis, protein secretion, and phenotypic morphology of NBT-II carcinoma cells in culture.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Sistema Urogenital
/
Neoplasias de la Vejiga Urinaria
Límite:
Animals
Idioma:
En
Revista:
Cancer Res
Año:
1987
Tipo del documento:
Article