Volume 125, Issue 6 pp. 1306-1315
Cancer Cell Biology

ING2 is upregulated in colon cancer and increases invasion by enhanced MMP13 expression

Kensuke Kumamoto

Kensuke Kumamoto

Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD

Second Department of Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan

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Kaori Fujita

Kaori Fujita

Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD

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Reiko Kurotani

Reiko Kurotani

Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD

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Motonobu Saito

Motonobu Saito

Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD

Second Department of Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan

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Motoko Unoki

Motoko Unoki

Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD

Laboratory for Biomarker, The Institute of Physical and Chemical Research, RIKEN, Tokyo, Japan

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Nobutoshi Hagiwara

Nobutoshi Hagiwara

Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD

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Hideaki Shiga

Hideaki Shiga

Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD

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Elise D. Bowman

Elise D. Bowman

Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD

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Nozomu Yanaihara

Nozomu Yanaihara

Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD

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Shu Okamura

Shu Okamura

Department of Surgery, Kansai Rosai Hospital, Hyogo, Japan

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Makoto Nagashima

Makoto Nagashima

Department of Surgery, Toho University Sakura Medical Center, Chiba, Japan

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Kotaro Miyamoto

Kotaro Miyamoto

Second Department of Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan

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Seiichi Takenoshita

Seiichi Takenoshita

Second Department of Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan

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Jun Yokota

Jun Yokota

Biology Division, National Cancer Center Research Institute, Tokyo, Japan

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Curtis C. Harris

Corresponding Author

Curtis C. Harris

Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD

Fax: +301-496-0497.

Laboratory of Human Carcinogenesis, CCR, NCI, NIH, 37 Convent Drive, Building 37, Room 3068, Bethesda, Maryland 20892-4258, USASearch for more papers by this author
First published: 14 July 2009
Citations: 40

This article is a US Government work and, as such, is in the public domain in the United States of America.

Abstract

Inhibitor of growth 2 (ING2) is associated with chromatin remodeling and regulation of gene expression by binding to a methylated histone H3K4 residue and recruiting HDAC complexes to the region. The aim of our study is to investigate the regulation of ING2 expression and the clinical significance of upregulated ING2 in colon cancer. Here, we show that the ING2 mRNA level in colon cancer tissue increased to more than twice than that in normal mucosa in the 45% of colorectal cancer cases that we examined. A putative NF-κB binding site was found in the ING2 promoter region. We confirmed that NF-κB could bind to the ING2 promoter by EMSA and luciferase assays. Subsequent microarray analyses revealed that ING2 upregulates expression of matrix metalloproteinase 13 (MMP13), which enhances cancer invasion and metastasis. ING2 regulation of MMP13 expression was confirmed in both ING2 overexpression and knock down experiments. MMP13 expression was further induced by coexpression of ING2 with HDAC1 or with mSin3A, suggesting that the ING2-HDAC1-mSin3A complex members regulates expression of MMP13. In vitro invasion assay was performed to determine functional significance of ING2 upregulation. ING2 overexpressed cells exhibited greater invasive potential. Taken together, upregulation of ING2 was associated with colon cancer and MMP13-dependent cellular invasion, indicating that ING2 expression might be involved with cancer invasion and metastasis. Published 2009 UICC.

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