Identification of novel genes expressed during rhabdomyosarcoma differentiation using cDNA microarrays

被引:18
作者
Carey, KA
Segal, D
Klein, R
Sanigorski, A
Walder, K
Collier, GR
Cameron-Smith, D
机构
[1] Deakin Univ, Sch Exercise & Nutr Sci, Ctr Phys Act & Nutr, Burwood, Vic 3125, Australia
[2] Deakin Univ, Sch Exercise & Nutr Sci, Metab Res Unit, Burwood, Vic 3125, Australia
[3] ChemGenex Pharmaceut, Geelong, Vic, Australia
关键词
myogenesis; myogenic regulatory factors; Prothymosin alpha; Tim10;
D O I
10.1111/j.1440-1827.2006.01958.x
中图分类号
R36 [病理学];
学科分类号
100104 ;
摘要
Rhabdomyosarcomas (RMS) are highly aggressive tumors that are thought to arise as a consequence of the regulatory disruption of the growth and differentiation of skeletal muscle progenitor cells. Normal myogenesis is characterized by the expression of the myogenic regulatory factor gene family but, despite their expression in RMS, these tumor cells fail to complete the latter stages of myogenesis. The RMS cell line RD-A was treated with 12-O-tetradecanoylphorbol-13-acetate to induce differentiation and cultured for 10 days. RNA was extracted on days 1, 3, 6, 8 and 10. A human skeletal muscle cDNA microarray was developed and used to analyze the global gene expression of RMS tumors over the time-course of differentiation. As a comparison, the genes identified were subsequently examined during the differentiated primary human skeletal muscle cultures. Prothymosin alpha (PTMA), and translocase of inner mitochondrial membrane 10 (Tim10), two genes not previously implicated in RMS, showed reduced expression during differentiation. Marked differences in the expression of PTMA and Tim10 were observed during the differentiation of human primary skeletal muscle cells. These results identify several new genes with potential roles in the myogenic arrest present in rhabdomyosarcoma. PTMA expression in RMS biopsy samples might prove to be an effective diagnostic marker for this disease.
引用
收藏
页码:246 / 255
页数:10
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