TY - JOUR
T1 - Proteomics analysis of the estrogen receptor α receptosome
AU - Nalvarte, Ivan
AU - Schwend, Thomas
AU - Gustafsson, Jan Åke
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2010/7
Y1 - 2010/7
N2 - The estrogen receptors (ERs) are ligand-dependent transcription factors that activate transcription by binding to estrogen response elements. Estrogen-mediated effects are tissue- and cell type-specific, determined by the cofactor recruitment to the ERs among other factors. To understand these differences in estrogen action, it is important to identify the various compositions of the ER complexes (ER receptosomes). In this report, we describe a fast and efficient method for the isolation of the ERα receptosome for proteomics analysis. Using immobilized estrogen response element on a Sepharose column in combination with two-dimensional electrophoresis and MALDI-TOF MS, significant amounts of proteins could be isolated and identified. Differences in ERα complex composition with the ER ligands 17β-estradiol, 4-hydroxytamoxifen, and ICI-182,780 could also be observed. Thus, this approach provides an easy and relevant way of identifying ERα cofactor and transcription factor recruitment under different conditions.
AB - The estrogen receptors (ERs) are ligand-dependent transcription factors that activate transcription by binding to estrogen response elements. Estrogen-mediated effects are tissue- and cell type-specific, determined by the cofactor recruitment to the ERs among other factors. To understand these differences in estrogen action, it is important to identify the various compositions of the ER complexes (ER receptosomes). In this report, we describe a fast and efficient method for the isolation of the ERα receptosome for proteomics analysis. Using immobilized estrogen response element on a Sepharose column in combination with two-dimensional electrophoresis and MALDI-TOF MS, significant amounts of proteins could be isolated and identified. Differences in ERα complex composition with the ER ligands 17β-estradiol, 4-hydroxytamoxifen, and ICI-182,780 could also be observed. Thus, this approach provides an easy and relevant way of identifying ERα cofactor and transcription factor recruitment under different conditions.
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U2 - 10.1074/mcp.M900457-MCP200
DO - 10.1074/mcp.M900457-MCP200
M3 - Article
C2 - 20348541
AN - SCOPUS:77954746505
VL - 9
SP - 1411
EP - 1422
JO - Molecular and Cellular Proteomics
JF - Molecular and Cellular Proteomics
SN - 1535-9476
IS - 7
ER -