Inhibition of RNA polymerase I as a therapeutic strategy to promote cancer-specific activation of p53.
Inhibition of RNA polymerase I as a therapeutic strategy to promote cancer-specific activation of p53.
复制标题
抑制RNA聚合酶I作为促进p53癌症特异性激活的治疗策略。
DOI:
10.1016/j.ccr.2012.05.019
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发表时间:
2012-07-10
期刊:
影响因子:
50.3
通讯作者:
Hannan RD
中科院分区:
文献类型:
--
作者:
Bywater MJ;Poortinga G;Sanij E;Hein N;Peck A;Cullinane C;Wall M;Cluse L;Drygin D;Anderes K;Huser N;Proffitt C;Bliesath J;Haddach M;Schwaebe MK;Ryckman DM;Rice WG;Schmitt C;Lowe SW;Johnstone RW;Pearson RB;McArthur GA;Hannan RD
Increased transcription of ribosomal RNA genes (rDNA) by RNA Polymerase I is a common feature of human cancer, but whether it is required for the malignant phenotype remains unclear. We show that rDNA transcription can be therapeutically targeted with the small molecule CX-5461 to selectively kill B-lymphoma cells in vivo while maintaining a viable wild-type B cell population. The therapeutic effect is a consequence of nucleolar disruption and activation of p53-dependent apoptotic signaling. Human leukemia and lymphoma cell lines also show high sensitivity to inhibition of rDNA transcription that is dependent on p53 mutational status. These results identify selective inhibition of rDNA transcription as a therapeutic strategy for the cancer specific activation of p53 and treatment of hematologic malignancies.
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