Exome sequencing identifies mutation in CNOT3 and ribosomal genes RPL5 and RPL10 in T-cell acute lymphoblastic leukemia.

Exome sequencing identifies mutation in CNOT3 and ribosomal genes RPL5 and RPL10 in T-cell acute lymphoblastic leukemia.
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DOI:
10.1038/ng.2508
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发表时间:
2013-03
期刊:
影响因子:
30.8
通讯作者:
Cools J
Cools J
中科院分区:
生物学1区
文献类型:
--
作者:
De Keersmaecker K;Atak ZK;Li N;Vicente C;Patchett S;Girardi T;Gianfelici V;Geerdens E;Clappier E;Porcu M;Lahortiga I;Lucà R;Yan J;Hulselmans G;Vranckx H;Vandepoel R;Sweron B;Jacobs K;Mentens N;Wlodarska I;Cauwelier B;Cloos J;Soulier J;Uyttebroeck A;Bagni C;Hassan BA;Vandenberghe P;Johnson AW;Aerts S;Cools J

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t细胞急性淋巴细胞白血病(T-ALL)是由多种致瘤病变共同引起的。我们对67个t - all进行了外显子组测序,以深入了解这些白血病的突变谱。我们在508个基因中检测到蛋白改变突变,在儿童中平均有8.2个突变,在成人T-ALL中平均有21.0个突变。通过严格的筛选,我们预测了T-ALL中七个新的致癌驱动基因。我们在89个成年t - all中鉴定出7个(7.9%)的CNOT3是肿瘤抑制因子突变,在致敏的黑腹果蝇模型中,CNOT3的敲除导致肿瘤。此外,我们在122例儿童t - all中鉴定了12例(9.8%)影响核糖体蛋白RPL5和RPL10的突变,RPL10中Arg98的复发性改变。表达RPL10 Arg98Ser突变体的酵母和淋巴样细胞表现出核糖体生物发生缺陷。我们的数据提供了对儿童和成人T-ALL突变景观的见解,并确定核糖体是一个潜在的致癌因素。
T-cell acute lymphoblastic leukemia (T-ALL) is caused by the cooperation of multiple oncogenic lesions. We used exome sequencing on 67 T-ALLs to gain insight into the mutational spectrum in these leukemias. We detected protein-altering mutations in 508 genes, with an average of 8.2 mutations in pediatric and 21.0 mutations in adult T-ALL. Using stringent filtering, we predict seven new oncogenic driver genes in T-ALL. We identify CNOT3 as a tumor suppressor mutated in 7 of 89 (7.9%) adult T-ALLs, and its knockdown causes tumors in a sensitized Drosophila melanogaster model. In addition, we identify mutations affecting the ribosomal proteins RPL5 and RPL10 in 12 of 122 (9.8%) pediatric T-ALLs, with recurrent alterations of Arg98 in RPL10. Yeast and lymphoid cells expressing the RPL10 Arg98Ser mutant showed a ribosome biogenesis defect. Our data provide insights into the mutational landscape of pediatric versus adult T-ALL and identify the ribosome as a potential oncogenic factor.
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