Document Detail

Cytogenetic analysis of esophageal squamous cell carcinoma cell lines by comparative genomic hybridization: relationship of cytogenetic aberrations to in vitro cell growth.
MedLine Citation:
PMID:  10704679     Owner:  NLM     Status:  MEDLINE    
Cancer is characterized by autonomous growth of cells, and it is widely accepted that cell proliferation is primarily influenced by individual cell genetics. To elucidate the mechanisms of cancer cell proliferation, we studied differences in genetic aberrations for different type of tumors with different proliferation characteristics. We employed comparative genomic hybridization (CGH) to detect genetic aberrations in six cell lines of esophageal squamous cell carcinoma (ESCC). Three cell lines (YES-1, -2, and -3) grow in culture without fetal calf serum (group A), while others require serum to be maintained in vitro (group B). Both groups showed very similar cytogenetic aberrations: over-representations of 11q13 (6/6), 8q23-qter (5/6), Xq25-qter (5/6), 3q26-qter (4/6), 5p (4/6), 7p15-pter (4/6), 8q21.3-q22 (4/6), 17p (4/6), and 20q13 (4/6), and under-representations of 18q21-qter (6/6), 4q28-q33 (4/6), and 9p21 (4/6). Six amplification loci were mapped to chromosomal regions of 6q23 (1 case), 7p12 (2 cases), 9p21 (1 case), 11p11.2-12 (3 cases), 11q13 (2 cases), and 17p12 (2 cases). However, some differences were detected. DNA copy number increases at 7p12-p13, 11q14-q22, and 11q22-qter and under-representations of 4p, 8p, and 11p14-pter. In contrast, gains at 12p and 20p, and losses at 3p and 5q were detected only in group-B cell lines. These observations suggest that cytogenetic differences between the two groups may be linked to differences in cell growth characteristics in vitro, and that the genes in these chromosomal regions may play important roles in cell proliferation.
K Tada; M Oka; H Hayashi; A Tangoku; A Oga; K Sasaki
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Cancer genetics and cytogenetics     Volume:  117     ISSN:  0165-4608     ISO Abbreviation:  Cancer Genet. Cytogenet.     Publication Date:  2000 Mar 
Date Detail:
Created Date:  2000-03-17     Completed Date:  2000-03-17     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7909240     Medline TA:  Cancer Genet Cytogenet     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  108-12     Citation Subset:  IM    
Department of Pathology, Yamaguchi University School of Medicine, Yamaguchi, Japan.
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MeSH Terms
Carcinoma, Squamous Cell / genetics*,  pathology
Cell Division
Chromosome Aberrations*
DNA, Neoplasm / analysis
Esophageal Neoplasms / genetics*,  pathology
Nucleic Acid Hybridization
Tumor Cells, Cultured
Reg. No./Substance:
0/DNA, Neoplasm

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