Responses of NBT-II bladder carcinoma cells to conditioned medium from normal fetal urogenital sinus

D. R. Rowley, D. J. Tindall

Research output: Contribution to journalArticle

24 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)2955-2960
Number of pages6
JournalCancer Research
Volume47
Issue number11
StatePublished - 1987
Externally publishedYes

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Conditioned Culture Medium
Urinary Bladder
Carcinoma
Pseudopodia
Proteins
Methionine
Cell Culture Techniques
Thymidine
Cell Count
Cell Proliferation

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Responses of NBT-II bladder carcinoma cells to conditioned medium from normal fetal urogenital sinus. / Rowley, D. R.; Tindall, D. J.

In: Cancer Research, Vol. 47, No. 11, 1987, p. 2955-2960.

Research output: Contribution to journalArticle

Rowley, D. R. ; Tindall, D. J. / Responses of NBT-II bladder carcinoma cells to conditioned medium from normal fetal urogenital sinus. In: Cancer Research. 1987 ; Vol. 47, No. 11. pp. 2955-2960.
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