A transcription-factor-binding surface of coactivator p300 is required for haematopoiesis

Lawryn H. Kasper, Fayçal Boussouar, Paul A. Ney, Carl W. Jackson, Jerold Rehg, Jan Van Deursen, Paul K. Brindle

Research output: Contribution to journalArticle

135 Citations (Scopus)

Abstract

The coactivators CBP (Cre-element binding protein (CREB)-binding protein) and its paralogue p300 are thought to supply adaptor molecule and protein acetyltransferase functions to many transcription factors that regulate gene expression. Normal development requires CBP and p300, and mutations in these genes are found in haematopoietic and epithelial tumours. It is unclear, however, which functions of CBP and p300 are essential in vivo. Here we show that the protein-binding KIX domains of CBP and p300 have nonredundant functions in mice. In mice homozygous for point mutations in the KIX domain of p300 designed to disrupt the binding surface for the transcription factors c-Myb and CREB, multilineage defects occur in haematopoiesis, including anaemia, B-cell deficiency, thymic hypoplasia, megakaryocytosis and thrombocytosis. By contrast, age-matched mice homozygous for identical mutations in the KIX domain of CBP are essentially normal. There is a synergistic genetic interaction between mutations in c-Myb and mutations in the KIX domain of p300, which suggests that the binding of c-Myb to this domain of p300 is crucial for the development and function of megakaryocytes. Thus, conserved domains in two highly related coactivators have contrasting roles in haematopoiesis.

Original languageEnglish (US)
Pages (from-to)738-743
Number of pages6
JournalNature
Volume419
Issue number6908
DOIs
StatePublished - Oct 17 2002
Externally publishedYes

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Hematopoiesis
Transcription Factors
Carrier Proteins
Mutation
Protein Binding
Thrombocytosis
Acetyltransferases
Megakaryocytes
Point Mutation
Anemia
B-Lymphocytes
Gene Expression
Genes
Neoplasms
Proteins

ASJC Scopus subject areas

  • General

Cite this

Kasper, L. H., Boussouar, F., Ney, P. A., Jackson, C. W., Rehg, J., Van Deursen, J., & Brindle, P. K. (2002). A transcription-factor-binding surface of coactivator p300 is required for haematopoiesis. Nature, 419(6908), 738-743. https://doi.org/10.1038/nature01062

A transcription-factor-binding surface of coactivator p300 is required for haematopoiesis. / Kasper, Lawryn H.; Boussouar, Fayçal; Ney, Paul A.; Jackson, Carl W.; Rehg, Jerold; Van Deursen, Jan; Brindle, Paul K.

In: Nature, Vol. 419, No. 6908, 17.10.2002, p. 738-743.

Research output: Contribution to journalArticle

Kasper, LH, Boussouar, F, Ney, PA, Jackson, CW, Rehg, J, Van Deursen, J & Brindle, PK 2002, 'A transcription-factor-binding surface of coactivator p300 is required for haematopoiesis', Nature, vol. 419, no. 6908, pp. 738-743. https://doi.org/10.1038/nature01062
Kasper, Lawryn H. ; Boussouar, Fayçal ; Ney, Paul A. ; Jackson, Carl W. ; Rehg, Jerold ; Van Deursen, Jan ; Brindle, Paul K. / A transcription-factor-binding surface of coactivator p300 is required for haematopoiesis. In: Nature. 2002 ; Vol. 419, No. 6908. pp. 738-743.
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