Transformation of hematopoietic cells by the Ski oncoprotein involves repression of retinoic acid receptor signaling

Richard Dahl, Matthias Kieslinger, Hartmut Beug, Michael J. Hayman

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

The Ski oncogene has dramatic effects on the differentiation of several different cell types. It induces the differentiation of quail embryo cells into myoblasts and arrests the differentiation of chicken hematopoietic cells. The mechanism that Ski uses to carry out these disparate biological activities is unknown. However, we were struck by the similarity of these effects to those of certain members of the nuclear hormone receptor family. Both Ski and the thyroid hormone receptor-derived oncogene v-ErbA can arrest the differentiation of avian erythroblasts, and v-Ski-transformed avian multipotent progenitor cells resemble murine hematopoietic cells that express a dominant-negative form of the retinoic acid receptor, RARα. In this paper, we have tested the hypothesis that v-Ski and its cellular homologue c-Ski exert their effects by interfering with nuclear hormone receptor-induced transcription. We demonstrate that Ski associates with the RAR complex and can repress transcription from a retinoic acid response element. The physiological significance of this finding is demonstrated by the ability of high concentrations of a RARα-specific ligand to abolish v-Ski-induced transformation of the multipotent progenitors. These results strongly suggest that the ability of Ski to alter cell differentiation is caused in part by the modulation of RAR signaling pathways.

Original languageEnglish (US)
Pages (from-to)11187-11192
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume95
Issue number19
DOIs
StatePublished - Sep 15 1998
Externally publishedYes

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Retinoic Acid Receptors
Oncogene Proteins
Cytoplasmic and Nuclear Receptors
erbA Genes
Thyroid Hormone Receptors
Erythroblasts
Quail
Myoblasts
Response Elements
Tretinoin
Oncogenes
Cell Differentiation
Chickens
Stem Cells
Embryonic Structures
Ligands

ASJC Scopus subject areas

  • Genetics
  • General

Cite this

Transformation of hematopoietic cells by the Ski oncoprotein involves repression of retinoic acid receptor signaling. / Dahl, Richard; Kieslinger, Matthias; Beug, Hartmut; Hayman, Michael J.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 95, No. 19, 15.09.1998, p. 11187-11192.

Research output: Contribution to journalArticle

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