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Genome-wide analysis of gene expression in synovial sarcomas using a cDNA microarray
Satoshi Nagayama1, Toyomasa Katagiri, Tatsuhiko Tsunoda
1Laboratory of Molecular Medicine, Human Genome Center, Institute of Medical Science, The University of Tokyo, Japan.
Cancer Research
|October 18, 2002
Summary
Synovial sarcoma (SS) may originate from neuroectodermal cells, as indicated by gene expression patterns similar to neural tumors. Further analysis revealed distinct SS subclasses, offering new insights into its biology and origin.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Synovial sarcoma (SS) is a soft tissue sarcoma of uncertain origin, despite a known chromosomal translocation in its pathogenesis.
- Genetic features contributing to SS development remain largely unclear.
Purpose of the Study:
- To investigate the genome-wide gene expression profiles of synovial sarcoma (SS) and other spindle-cell sarcomas.
- To explore the potential neuroectodermal origin of SS and identify novel subclasses.
Main Methods:
- Genome-wide gene expression profiling using cDNA microarray on 13 SS cases and 34 other spindle-cell sarcoma cases.
- Hierarchical clustering analysis to group tumors based on gene expression patterns.
Main Results:
- Hierarchical clustering grouped SS with malignant peripheral nerve sheath tumors, sharing gene expression patterns related to neural differentiation.
- Several genes, linked to neural crest cell migration and differentiation, were upregulated in SS, suggesting a potential neuroectodermal origin.
- A set of genes identified two putative subclasses within SS, indicating novel biological aspects beyond epithelial differentiation.
Conclusions:
- The findings suggest a possible neuroectodermal origin for synovial sarcoma (SS).
- Gene expression profiling identified distinct SS subclasses, providing new avenues for understanding SS biology and tumorigenesis.