Oncogenic IL7R gain-of-function mutations in childhood T-cell acute lymphoblastic leukemia.
Oncogenic IL7R gain-of-function mutations in childhood T-cell acute lymphoblastic leukemia.
复制标题
DOI:
10.1038/ng.924
复制
发表时间:
2011-09-04
期刊:
影响因子:
30.8
通讯作者:
Barata JT
中科院分区:
文献类型:
--
作者:
Zenatti PP;Ribeiro D;Li W;Zuurbier L;Silva MC;Paganin M;Tritapoe J;Hixon JA;Silveira AB;Cardoso BA;Sarmento LM;Correia N;Toribio ML;Kobarg J;Horstmann M;Pieters R;Brandalise SR;Ferrando AA;Meijerink JP;Durum SK;Yunes JA;Barata JT
Interleukin 7 (IL-7) and its receptor, formed by IL-7Rα (encoded by IL7R) and γc, are essential for normal T-cell development and homeostasis. Here we show that IL7R is an oncogene mutated in T-cell acute lymphoblastic leukemia (T-ALL). We find that 9% of individuals with T-ALL have somatic gain-of-function IL7R exon 6 mutations. In most cases, these IL7R mutations introduce an unpaired cysteine in the extracellular juxtamembrane-transmembrane region and promote de novo formation of intermolecular disulfide bonds between mutant IL-7Rα subunits, thereby driving constitutive signaling via JAK1 and Independently of IL-7, γc or JAK3. IL7R mutations induce a gene expression profile partially resembling that provoked by IL-7 and are enriched in the T-ALL subgroup comprising TLX3 rearranged and HOXA deregulated cases. Notably, IL7R mutations promote cell transformation and tumor formation. Overall, our findings indicate that IL7R mutational activation is involved in human T-cell leukemogenesis, paving the way for therapeutic targeting of IL-7R–mediated signaling in T-ALL.
登录
查看更多内容
影响因子:
30.8
作者:
通讯作者:
--
影响因子:
8
作者:
Abraham, N;Ma, MC;Goldsmith, MA
通讯作者:
Goldsmith, MA
影响因子:
30.8
作者:
Lundmark, Frida;Duvefelt, Kristina;Hillert, Jan
通讯作者:
Hillert, Jan
影响因子:
20.3
作者:
Gutierrez, Alejandro;Sanda, Takaomi;Look, A. Thomas
通讯作者:
Look, A. Thomas
DOI:
10.1084/jem.20081922
发表时间:
2009-04-13
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
González-García S;García-Peydró M;Martín-Gayo E;Ballestar E;Esteller M;Bornstein R;de la Pompa JL;Ferrando AA;Toribio ML
通讯作者:
Toribio ML