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The Notch/Hes1 Pathway Sustains NF-κB Activation Through CYLD Repression in T Cell Leukemia

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.

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References
1.
Hideshima T, Ikeda H, Chauhan D, Okawa Y, Raje N, Podar K . Bortezomib induces canonical nuclear factor-kappaB activation in multiple myeloma cells. Blood. 2009; 114(5):1046-52. PMC: 2721785. DOI: 10.1182/blood-2009-01-199604. View

2.
Keats J, Fonseca R, Chesi M, Schop R, Baker A, Chng W . Promiscuous mutations activate the noncanonical NF-kappaB pathway in multiple myeloma. Cancer Cell. 2007; 12(2):131-44. PMC: 2083698. DOI: 10.1016/j.ccr.2007.07.003. View

3.
Hoffmann A, Levchenko A, Scott M, Baltimore D . The IkappaB-NF-kappaB signaling module: temporal control and selective gene activation. Science. 2002; 298(5596):1241-5. DOI: 10.1126/science.1071914. View

4.
Schmidt-Supprian M, Bloch W, Courtois G, Addicks K, Israel A, Rajewsky K . NEMO/IKK gamma-deficient mice model incontinentia pigmenti. Mol Cell. 2000; 5(6):981-92. DOI: 10.1016/s1097-2765(00)80263-4. View

5.
Kato M, Sanada M, Kato I, Sato Y, Takita J, Takeuchi K . Frequent inactivation of A20 in B-cell lymphomas. Nature. 2009; 459(7247):712-6. DOI: 10.1038/nature07969. View