CSL-MAML-dependent Notch1 signaling controls T lineage-specific IL-7R{alpha} gene expression in early human thymopoiesis and leukemia.
CSL-MAML-dependent Notch1 signaling controls T lineage-specific IL-7R{alpha} gene expression in early human thymopoiesis and leukemia.
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DOI:
10.1084/jem.20081922
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发表时间:
2009-04-13
期刊:
影响因子:
--
通讯作者:
Toribio ML
中科院分区:
文献类型:
--
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
Notch1 activation is essential for T-lineage specification of lymphomyeloid progenitors seeding the thymus. Progression along the T cell lineage further requires cooperative signaling provided by the interleukin 7 receptor (IL-7R), but the molecular mechanisms responsible for the dynamic and lineage-specific regulation of IL-7R during thymopoiesis are unknown. We show that active Notch1 binds to a conserved CSL-binding site in the human IL7R gene promoter and critically regulates IL7R transcription and IL-7R α chain (IL-7Rα) expression via the CSL–MAML complex. Defective Notch1 signaling selectively impaired IL-7Rα expression in T-lineage cells, but not B-lineage cells, and resulted in a compromised expansion of early human developing thymocytes, which was rescued upon ectopic IL-7Rα expression. The pathological implications of these findings are demonstrated by the regulation of IL-7Rα expression downstream of Notch1 in T cell leukemias. Thus, Notch1 controls early T cell development, in part by regulating the stage- and lineage-specific expression of IL-7Rα.
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影响因子:
4.4
作者:
Ciofani, M;Schmitt, TM;Zúñiga-Pflücker, JC
通讯作者:
Zúñiga-Pflücker, JC
影响因子:
15.3
作者:
Carrasco, YR;Ramiro, AR;Toribio, ML
通讯作者:
Toribio, ML
DOI:
10.1073/pnas.0601188103
发表时间:
2006-08-08
影响因子:
11.1
作者:
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通讯作者:
Rothenberg, Ellen V.
影响因子:
20.3
作者:
La Motte-Mohs, RN;Herer, E;Zúñiga-Pflücker, JC
通讯作者:
Zúñiga-Pflücker, JC
影响因子:
30.8
作者:
Puel, A;Ziegler, SF;Leonard, WJ
通讯作者:
Leonard, WJ