Hes1 expression and CYLD repression are essential events downstream of Notch1 in T-cell leukemia
2011
Notch activation is a current event in T Acute Lymphoblastic Leukemia (T-ALL) but the downstream elements that are able to support Notch-dependent leukemias are not well characterized. We have recently shown that the Notch-Hes1-CYLD-NFκB axis is crucial in the maintenance of T-ALL, but detailed evaluation of the contribution of each one of these elements is still missing. Here we use a Notch1-induced leukemia in vivo model to study the effect of silencing the Notch-target gene, Hes1 or overexpressing the Hes1-target, CYLD. We here show that both strategies completely abolish the ability of constitutive active Notch1 to generate T-ALL.
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