Abstract:
:A series of quinazolin-4-one based hydroxamic acids was rationally designed and synthesized as novel dual PI3K/HDAC inhibitors by incorporating an HDAC pharmacophore into a PI3K inhibitor (Idelalisib) via an optimized linker. Several of these dual inhibitors were highly potent (IC50 < 10 nM) and selective against PI3Kγ, δ and HDAC6 enzymes and exhibited good antiproliferative activity against multiple cancer cell lines. The lead compound 48c, induced necrosis in several mutant and FLT3-resistant AML cell lines and primary blasts from AML patients, while showing no cytotoxicity against normal PBMCs, NIH3T3, and HEK293 cells. Target engagement of PI3Kδ and HDAC6 by 48c was demonstrated in MV411 cells using the cellular thermal shift assay (CETSA). Compound 48c showed good pharmacokinetics properties in mice via intraperitoneal (ip) administration and provides a means to examine the biological effects of inhibiting these two important enzymes with a single molecule, either in vitro or in vivo.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Thakur A,Tawa GJ,Henderson MJ,Danchik C,Liu S,Shah P,Wang AQ,Dunn G,Kabir M,Padilha EC,Xu X,Simeonov A,Kharbanda S,Stone R,Grewal Gdoi
10.1021/acs.jmedchem.0c00193subject
Has Abstractpub_date
2020-04-23 00:00:00pages
4256-4292issue
8eissn
0022-2623issn
1520-4804journal_volume
63pub_type
杂志文章abstract::The synthesis of substituted 3-(5-imidazo[2,1-b]thiazolylmethylene)-2-indolinones and analogues is reported. Their cytotoxic activity was evaluated according to protocols available at the National Cancer Institute (NCI), Bethesda, MD. The action of selected compounds was examined for potential inhibition of tubulin as...
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journal_title:Journal of medicinal chemistry
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