These authors contributed equally to this study.
Role of the transcription factor T (brachyury) in the pathogenesis of sporadic chordoma: a genetic and functional-based study†
Article first published online: 24 NOV 2010
Copyright © 2010 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
The Journal of Pathology
Volume 223, Issue 3, pages 327–335, February 2011
How to Cite
Presneau, N., Shalaby, A., Ye, H., Pillay, N., Halai, D., Idowu, B., Tirabosco, R., Whitwell, D., Jacques, T. S., Kindblom, L.-G., Brüderlein, S., Möller, P., Leithner, A., Liegl, B., Amary, F. M., Athanasou, N. N., Hogendoorn, P. C., Mertens, F., Szuhai, K. and Flanagan, A. M. (2011), Role of the transcription factor T (brachyury) in the pathogenesis of sporadic chordoma: a genetic and functional-based study. J. Pathol., 223: 327–335. doi: 10.1002/path.2816
No conflicts of interest were declared.
- Issue published online: 20 DEC 2010
- Article first published online: 24 NOV 2010
- Accepted manuscript online: 20 OCT 2010 07:51AM EST
- Manuscript Accepted: 15 OCT 2010
- Manuscript Revised: 5 OCT 2010
- Manuscript Received: 9 SEP 2010
- Skeletal Cancer Action Trust (SCAT), UK
- Rosetrees Trust, UK
- Chordoma Foundation
- copy number gain;
A variety of analyses, including fluorescence in situ hybridization (FISH), quantitative PCR (qPCR) and array CGH (aCGH), have been performed on a series of chordomas from 181 patients. Twelve of 181 (7%) tumours displayed amplification of the T locus and an additional two cases showed focal amplification; 70/181 (39%) tumours were polysomic for chromosome 6, and 8/181 (4.5%) primary tumours showed a minor allelic gain of T as assessed by FISH. No germline alteration of the T locus was identified in non-neoplastic tissue from 40 patients. Copy number gain of T was seen in a similar percentage of sacrococcygeal, mobile spine and base of skull tumours. Knockdown of T in the cell line, U-CH1, which showed polysomy of chromosome 6 involving 6q27, resulted in a marked decrease in cell proliferation and morphological features consistent with a senescence-like phenotype. The U-CH1 cell line was validated as representing chordoma by the generation of xenografts, which showed typical chordoma morphology and immunohistochemistry in the NOD/SCID/interleukin 2 receptor [IL2r] mouse model. In conclusion, chromosomal aberrations resulting in gain of the T locus are common in sporadic chordomas and expression of this gene is critical for proliferation of chordoma cells in vitro. Copyright © 2010 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.