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Interaction of estrogen receptor alpha with proliferating cell nuclear antigen

Academic Article
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Overview

authors

  • Schultz-Norton, J. R.
  • Gabisi, V. A.
  • Ziegler, Y. S.
  • McLeod, I. X.
  • Yates III, John
  • Nardulli, A. M.

publication date

  • August 2007

journal

  • Nucleic Acids Research  Journal

abstract

  • The ability of estrogen receptor alpha (ERalpha) to modulate gene expression is influenced by the recruitment of a host of co-regulatory proteins to target genes. To further understand how estrogen-responsive genes are regulated, we have isolated and identified proteins associated with ERalpha when it is bound to DNA containing the consensus estrogen response element (ERE). One of the proteins identified in this complex, proliferating cell nuclear antigen (PCNA), is required for DNA replication and repair. We show that PCNA interacts with ERalpha in the absence and in the presence of DNA, enhances the interaction of ERalpha with ERE-containing DNA, and associates with endogenous estrogen-responsive genes. Interestingly, rather than altering hormone responsiveness of endogenous, estrogen-responsive genes, PCNA increases the basal expression of these genes. Our studies suggest that in addition to serving as a platform for the recruitment of DNA replication and repair proteins, PCNA may serve as a platform for transcription factors involved in regulating gene expression.

subject areas

  • Cell Line, Tumor
  • Estradiol
  • Estrogen Receptor alpha
  • Humans
  • Proliferating Cell Nuclear Antigen
  • Response Elements
  • Transcription, Genetic
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Identity

PubMed Central ID

  • PMC1976446

International Standard Serial Number (ISSN)

  • 0305-1048

Digital Object Identifier (DOI)

  • 10.1093/nar/gkm533

PubMed ID

  • 17636311
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Additional Document Info

start page

  • 5028

end page

  • 5038

volume

  • 35

issue

  • 15

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