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Metastasis-Inducing Mts1/S100A4 Protein Binds to Tumor Suppressor p53 Protein

Metastasis-Inducing Mts1/S100A4 Protein Binds to Tumor Suppressor p53 Protein This study for the first time demonstrates a physical and functional interaction between the Ca2+-binding protein Mts1/S100A4 and tumor suppressor p53 protein. Using different in vitro and in vivo approaches, we have found that Mts1 can bind to the C-terminal regulatory domain of p53. The Mts1 binding to p53 promotes activation of the reporter gene transcription in vivo. A modulation of the p53 target gene (p21/WAF,bax, mdm-2, and thrombospondin-1) expression was observed upon Mts1 induction in the cells expressing the wild-type p53. These results suggest that the ability of Mts1 to enhance p53-dependent apoptosis of tumor cells leads to the decrease/disappearance of the tumor cells expressing the wild-type p53. Thus, Mts1 promotes selection of more aggressive, metastatic phenotype during tumor progression. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Metastasis-Inducing Mts1/S100A4 Protein Binds to Tumor Suppressor p53 Protein

Russian Journal of Genetics , Volume 39 (7) – Oct 7, 2004

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References (58)

Publisher
Springer Journals
Copyright
Copyright © 2003 by MAIK “Nauka/Interperiodica”
Subject
Biomedicine; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
DOI
10.1023/A:1024744802324
Publisher site
See Article on Publisher Site

Abstract

This study for the first time demonstrates a physical and functional interaction between the Ca2+-binding protein Mts1/S100A4 and tumor suppressor p53 protein. Using different in vitro and in vivo approaches, we have found that Mts1 can bind to the C-terminal regulatory domain of p53. The Mts1 binding to p53 promotes activation of the reporter gene transcription in vivo. A modulation of the p53 target gene (p21/WAF,bax, mdm-2, and thrombospondin-1) expression was observed upon Mts1 induction in the cells expressing the wild-type p53. These results suggest that the ability of Mts1 to enhance p53-dependent apoptosis of tumor cells leads to the decrease/disappearance of the tumor cells expressing the wild-type p53. Thus, Mts1 promotes selection of more aggressive, metastatic phenotype during tumor progression.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Oct 7, 2004

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