Identification of a tumor suppressive critical region mapping to 3p14.2 in esophageal squamous cell carcinoma and studies of a candidate tumor suppressor gene, ADAMTS9

A gene critical to esophageal cancer has been identified. Functional studies using microcell-mediated chromosome transfer of intact and truncated donor chromosomes 3 into an esophageal cancer cell line and nude mouse tumorigenicity assays were used to identify a 1.61 Mb tumor suppressive critical re...

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Veröffentlicht in:Oncogene 2007-01, Vol.26 (1), p.148-157
Hauptverfasser: Lo, P H Y, Leung, A C C, Kwok, C Y C, Cheung, W S Y, Ko, J M Y, Yang, L C, Law, S, Wang, L D, Li, J, Stanbridge, E J, Srivastava, G, Tang, J C O, Tsao, S W, Lung, M L
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container_issue 1
container_start_page 148
container_title Oncogene
container_volume 26
creator Lo, P H Y
Leung, A C C
Kwok, C Y C
Cheung, W S Y
Ko, J M Y
Yang, L C
Law, S
Wang, L D
Li, J
Stanbridge, E J
Srivastava, G
Tang, J C O
Tsao, S W
Lung, M L
description A gene critical to esophageal cancer has been identified. Functional studies using microcell-mediated chromosome transfer of intact and truncated donor chromosomes 3 into an esophageal cancer cell line and nude mouse tumorigenicity assays were used to identify a 1.61 Mb tumor suppressive critical region (CR) mapping to chromosome 3p14.2. This CR is bounded by D3S1600 and D3S1285 microsatellite markers. One candidate tumor suppressor gene, ADAMTS9, maps to this CR. Further studies showed normal expression levels of this gene in tumor-suppressed microcell hybrids, levels that were much higher than observed in the recipient cells. Complete loss or downregulation of ADAMTS9 gene expression was found in 15 out of 16 esophageal carcinoma cell lines. Promoter hypermethylation was detected in the cell lines that do not express this gene. Re-expression of ADAMTS9 was observed after demethylation drug treatment, confirming that hypermethylation is involved in gene downregulation. Downregulation of ADAMTS9 was also found in 43.5 and 47.6% of primary esophageal tumor tissues from Hong Kong and from the high-risk region of Henan, respectively. Thus, this study identifies and provides functional evidence for a CR associated with tumor suppression on 3p14.2 and provides the first evidence that ADAMTS9 , mapping to this region, may contribute to esophageal cancer development.
doi_str_mv 10.1038/sj.onc.1209767
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subjects ADAM Proteins - genetics
ADAMTS9 Protein
Apoptosis
Base Sequence
Biological and medical sciences
Carcinoma, Squamous Cell - genetics
Cell Biology
Cell physiology
Cell transformation and carcinogenesis. Action of oncogenes and antioncogenes
Chromosome Mapping
Chromosomes, Human, Pair 3
DNA
DNA Methylation
DNA sequencing
Esophageal Neoplasms - genetics
Esophagus
Fundamental and applied biological sciences. Psychology
Gastroenterology. Liver. Pancreas. Abdomen
Gene expression
Gene Expression Regulation, Neoplastic
Genes
Genes, Tumor Suppressor
Genetic aspects
Head & neck cancer
Health aspects
Human Genetics
Humans
In Situ Hybridization, Fluorescence
Internal Medicine
Medical sciences
Medicine
Medicine & Public Health
Molecular and cellular biology
Molecular Sequence Data
Nucleotide sequencing
oncogenomics
Oncology
Squamous cell carcinoma
Tumor suppressor genes
Tumors
title Identification of a tumor suppressive critical region mapping to 3p14.2 in esophageal squamous cell carcinoma and studies of a candidate tumor suppressor gene, ADAMTS9
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