Title |
Combining the differentiating effect of panobinostat with the apoptotic effect of arsenic trioxide leads to significant survival benefit in a model of t(8;21) acute myeloid leukemia
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Published in |
Clinical Epigenetics, January 2015
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DOI | 10.1186/s13148-014-0034-4 |
Pubmed ID | |
Authors |
Jessica M Salmon, Michael Bots, Eva Vidacs, Kym L Stanley, Peter Atadja, Johannes Zuber, Ricky W Johnstone |
Abstract |
One of the most frequently found abnormalities in acute myeloid leukemia (AML) is the t(8;21)(q22;q22) translocation, which is seen in around 15% of patients. This translocation results in the production of the AML1/ETO (A/E) fusion protein and commonly involves cooperating activating mutations of RAS. AE9a encodes a C-terminally truncated A/E protein of 575 amino acids that retains the ability to recruit histone deacetylases (HDACs). Expression of AE9a leads to rapid development of leukemia in experimental mouse systems. We have recently shown that treatment of mice bearing A/E9a;Nras (G12D) tumors with the histone deacetylase inhibitor (HDACi) panobinostat leads to degradation of the A/E9a fusion protein, cell cycle arrest, differentiation of AML blasts into mature granulocytes and prolonged survival. Herein, we sought to enhance this therapeutic effect. |
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