PMID- 21171078 OWN - NLM STAT- MEDLINE DCOM- 20110222 LR - 20181201 IS - 1096-9896 (Electronic) IS - 0022-3417 (Linking) VI - 223 IP - 3 DP - 2011 Feb TI - Role of the transcription factor T (brachyury) in the pathogenesis of sporadic chordoma: a genetic and functional-based study. PG - 327-35 LID - 10.1002/path.2816 [doi] AB - 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]gammanull 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. CI - Copyright (c) 2010 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd. FAU - Presneau, Nadege AU - Presneau N AD - UCL Cancer Institute, 72 Huntley Street, London WC1 6BT, UK. FAU - Shalaby, Asem AU - Shalaby A FAU - Ye, Hongtao AU - Ye H FAU - Pillay, Nischalan AU - Pillay N FAU - Halai, Dina AU - Halai D FAU - Idowu, Bernadine AU - Idowu B FAU - Tirabosco, Roberto AU - Tirabosco R FAU - Whitwell, Duncan AU - Whitwell D FAU - Jacques, Thomas S AU - Jacques TS FAU - Kindblom, Lars-Gunnar AU - Kindblom LG FAU - Bruderlein, Silke AU - Bruderlein S FAU - Moller, Peter AU - Moller P FAU - Leithner, Andreas AU - Leithner A FAU - Liegl, Bernadette AU - Liegl B FAU - Amary, Fernanda M AU - Amary FM FAU - Athanasou, Nicholas N AU - Athanasou NN FAU - Hogendoorn, Pancras Cw AU - Hogendoorn PC FAU - Mertens, Fredrik AU - Mertens F FAU - Szuhai, Karoly AU - Szuhai K FAU - Flanagan, Adrienne M AU - Flanagan AM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101124 PL - England TA - J Pathol JT - The Journal of pathology JID - 0204634 RN - 0 (DNA, Neoplasm) RN - 0 (Fetal Proteins) RN - 0 (Neoplasm Proteins) RN - 0 (T-Box Domain Proteins) RN - EQ43SC3GDB (Brachyury protein) SB - IM CIN - J Pathol. 2011 Apr;223(5):565-6. PMID: 21394718 MH - Animals MH - Cell Proliferation MH - Chordoma/*genetics/metabolism/pathology MH - Chromosome Aberrations MH - DNA Copy Number Variations MH - DNA, Neoplasm/genetics MH - Fetal Proteins/*genetics/metabolism MH - Gene Knockdown Techniques MH - Genetic Predisposition to Disease MH - Humans MH - In Situ Hybridization, Fluorescence MH - Mice MH - Mice, SCID MH - Neoplasm Proteins/genetics/metabolism MH - Neoplasm Transplantation MH - Polymerase Chain Reaction/methods MH - T-Box Domain Proteins/*genetics/metabolism MH - Transplantation, Heterologous MH - Tumor Cells, Cultured EDAT- 2010/12/21 06:00 MHDA- 2011/02/23 06:00 CRDT- 2010/12/21 06:00 PHST- 2010/09/09 00:00 [received] PHST- 2010/10/05 00:00 [revised] PHST- 2010/10/15 00:00 [accepted] PHST- 2010/12/21 06:00 [entrez] PHST- 2010/12/21 06:00 [pubmed] PHST- 2011/02/23 06:00 [medline] AID - 10.1002/path.2816 [doi] PST - ppublish SO - J Pathol. 2011 Feb;223(3):327-35. doi: 10.1002/path.2816. Epub 2010 Nov 24.