Oncogenes belonging to the CSF-1 transduction pathway direct p53 tumor suppressor effects to monocytic differentiation in 32D cells

Roberta Martinelli, Giovanni Blandino, Raffaella Scardigli, Marco Crescenzi, Daniela Lombardi, Ada Sacchi, Silvia Soddu

Research output: Contribution to journalArticle

Abstract

Expression of exogenous wt-p53 in different tumor cell lines can induce growth arrest, apoptosis, or differentiation. Several experimental works have highlighted the relevance of cellular context in the determination of p53-mediated final outcomes. We recently observed that these diverse wt-p53 effects can also be induced by overexpressing wt-p53 in a single cell type - the 32D myeloid progenitors - transformed with different activated oncogenes. Here we show that 32D cells transformed with two different oncogenes, v-src or c-fms [S301,F969], both belonging to the CSF-1 transduction pathway, respond to exogenous wt-p53 expression with the same final outcome-monocytic differentiation. This result is particularly significant since 32D cells do not spontaneously express the CSF-1 receptor, whereas they undergo granulocytic differentiation upon G-CSF stimulation. These data strongly support the idea that wt-p53 suppressing effects result from interactions between p53 activity and the signaling pathways activated in different transformed cells.

Original languageEnglish
Pages (from-to)607-611
Number of pages5
JournalOncogene
Volume15
Issue number5
Publication statusPublished - 1997

Keywords

  • Cellular environment
  • Differentiation
  • Tumor suppression

ASJC Scopus subject areas

  • Molecular Biology
  • Cancer Research
  • Genetics

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