The Notch/Hes1 pathway sustains NF-κB activation through CYLD repression in T cell leukemia

Lluis Espinosa, Severine Cathelin, Teresa D'Altri, Thomas Trimarchi, Alexander Statnikov, Jordi Guiu, Veronica Rodilla, Julia Inglés-Esteve, Josep Nomdedeu, Beatriz Bellosillo, Carles Besses, Omar Abdel-Wahab, Nicole Kucine, Shao Cong Sun, Guangchan Song, Charles C. Mullighan, Ross L. Levine, Klaus Rajewsky, Iannis Aifantis*, Anna Bigas

*Corresponding author af dette arbejde
198 Citationer (Scopus)

Abstract

It was previously shown that the NF-κB pathway is downstream of oncogenic Notch1 in T cell acute lymphoblastic leukemia (T-ALL). Here, we visualize Notch-induced NF-κB activation using both human T-ALL cell lines and animal models. We demonstrate that Hes1, a canonical Notch target and transcriptional repressor, is responsible for sustaining IKK activation in T-ALL. Hes1 exerts its effects by repressing the deubiquitinase CYLD, a negative IKK complex regulator. CYLD expression was found to be significantly suppressed in primary T-ALL. Finally, we demonstrate that IKK inhibition is a promising option for the targeted therapy of T-ALL as specific suppression of IKK expression and function affected both the survival of human T-ALL cells and the maintenance of the disease in vivo.

OriginalsprogEngelsk
TidsskriftCancer Cell
Vol/bind18
Udgave nummer3
Sider (fra-til)268-281
Antal sider14
ISSN1535-6108
DOI
StatusUdgivet - 1 jan. 2010
Udgivet eksterntJa

Fingeraftryk

Dyk ned i forskningsemnerne om 'The Notch/Hes1 pathway sustains NF-κB activation through CYLD repression in T cell leukemia'. Sammen danner de et unikt fingeraftryk.

Citationsformater