Transcriptional amplification in tumor cells with elevated c-Myc.
Transcriptional amplification in tumor cells with elevated c-Myc.
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DOI:
10.1016/j.cell.2012.08.026
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发表时间:
2012-09-28
期刊:
影响因子:
64.5
通讯作者:
Young RA
中科院分区:
文献类型:
--
作者:
Lin CY;Lovén J;Rahl PB;Paranal RM;Burge CB;Bradner JE;Lee TI;Young RA
Elevated expression of the c-Myc transcription factor occurs frequently in human cancers and is associated with tumor aggression and poor clinical outcome. The effect of high levels of c-Myc on global gene regulation is poorly understood, but is widely thought to involve newly activated or repressed “Myc target genes”. We report here that in tumor cells expressing high levels of c-Myc, the transcription factor accumulates in the promoter regions of active genes and causes transcriptional amplification, producing increased levels of transcripts within the cell's gene expression program. Thus, rather than binding and regulating a new set of genes, c-Myc amplifies the output of the existing gene expression program. These results provide an explanation for the diverse effects of oncogenic c-Myc on gene expression in different tumor cells and suggest that transcriptional amplification reduces rate-limiting constraints for tumor cell growth and proliferation.
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影响因子:
11.2
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Dang CV
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Dang CV
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64.8
作者:
通讯作者:
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16
作者:
Brès V;Yoshida T;Pickle L;Jones KA
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Jones KA
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Bouchard, C;Marquardt, J;Eilers, M
通讯作者:
Eilers, M
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Lania, Luigi