Class I/IIb-Selective HDAC Inhibitor Exhibits Oral Bioavailability and Therapeutic Efficacy in Acute Myeloid Leukemia
作者:Andrew E. Shouksmith、Justyna M. Gawel、Nabanita Nawar、Diana Sina、Yasir S. Raouf、Shazreh Bukhari、Liying He、Alexandra E. Johns、Pimyupa Manaswiyoungkul、Olasunkanmi O. Olaoye、Aaron D. Cabral、Abootaleb Sedighi、Elvin D. de Araujo、Patrick T. Gunning
DOI:10.1021/acsmedchemlett.9b00471
日期:2020.1.9
The HDAC inhibitor 4-tert-butyl-N-(4-(hydroxycarbamoyl)phenyl)benzamide (AES-350, 51) was identified as a promising preclinical candidate for the treatment of acute myeloid leukemia (AML), an aggressive malignancy with a meagre 24% 5-year survival rate. Through screening of low-molecular-weight analogues derived from the previously discovered novel HDAC inhibitor, AES-135, compound 51 demonstrated greater HDAC isoform selectivity, higher cytotoxicity in MV4-11 cells, an improved therapeutic window, and more efficient absorption through cellular and lipid membranes. Compound 51 also demonstrated improved oral bioavailability compared to SAHA in mouse models. A broad spectrum of experiments, including FACS, ELISA, and Western blotting, were performed to support our hypothesis that 51 dose-dependently triggers apoptosis in AML cells through HDAC inhibition.