Title

NF-kB and ZBP-89 regulate MMP-3 expression via a polymorphic site in the promoter

Document Type

Article

Publication Date

2009

Abstract

A 5T/6T polymorphism in the human MMP-3 promoter affects gene expression and impacts the risk and/or severity of various pathological conditions. Chromatin immunoprecipitation (ChIP) in human fibroblasts homozygous for the 6T site demonstrate that it is bound by NF-kB and ZBP-89 transcription factors in its native chromatin. ChIP in COS-1 cells transfected with plasmids containing the 5T and 6T sites in the context of 2 kb of the MMP-3 promoter showed that NF-kB p50 binds preferentially to the 6T site, while more ZBP-89 binding is detected to the 5T site. Over-expressed ZBP-89 increased transcription from the 5T promoter but not from the 6T, while NF-kB decreased transcription from both promoters, even in the presence of excess ZBP-89. A model is suggested in which the physiological impact of the polymorphism is dependent on the relative levels and activities of these competing factors in various cell types and conditions.

Publication Title

Biochemical and biophysical research communications

Volume

382

Issue

2

First Page

269

Last Page

273

Comments

This article was published in Biochemical and biophysical research communications, Volume 382, Issue 2, Pages 269-273.

The published version is available at http://dx.doi.org/10.1016/j.bbrc.2009.03.002.

Copyright © 2009 Elsevier.

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