Cell density-dependent proliferative effects of transforming growth factor (TGF)-β1, β2, and β3 in human chondrosarcoma cells HCS-2/8 are associated with changes in the expression of TGF-β receptor type I

Karim Boumèdiene, Masaharu Takigawa, Jean Pierre Pujol

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In this study, the growth properties of the human chondrosarcoma cell line HCS-2/8, its response to transforming growth factor (TGF)-β isoforms 1, 2, and 3, and its expression of TGF-β receptors I and II were examined. We demonstrated that these tumor cells are not contact-inhibited and that they can proliferate in the absence of additional serum growth factors. In sparse cultures, all TGF-β forms inhibited the growth of HCS-2/8 cells, whereas they induced a 2-fold increase of DNA synthesis in serum-fed confluent cultures. In serum-free confluent conditions only TGF-β1 stimulated the proliferation rate, whereas TGF-β2 was without effect and TGF-β3 was rather inhibitory. This bimodal effect of TGF-β forms was associated with a greater level of TGF-β receptor I mRNA in confluent HCS-2/8 than in sparse cultures, suggesting that the growth response to TGF-β forms is dependent on the receptor profile expressed.

Original languageEnglish
Pages (from-to)475-486
Number of pages12
JournalCancer Investigation
Volume19
Issue number5
DOIs
Publication statusPublished - Jul 18 2001

    Fingerprint

Keywords

  • Cell proliferation
  • Chondrocytes
  • Chondrosarcoma
  • TGF-β

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Cite this