Delayed and Prolonged Histone Hyperacetylation with a Selective HDAC1/HDAC2 Inhibitor
摘要:
The identification and in vitro and in vivo characterization of a potent SHI-1:2 are described. Kinetic analysis indicated that biaryl inhibitors exhibit slow binding kinetics in isolated HDAC1 and HDAC2 preparations. Delayed histone hyperacetylation and gene expression changes were also observed in cell culture, and histone acetylation was observed in vivo beyond disappearance of drug from plasma. In vivo studies further demonstrated that continuous target inhibition was well tolerated and efficacious in tumor-bearing mice, leading to tumor growth inhibition with either once-daily or intermittent administration.
The present invention relates to a novel class of substituted spirocyclic compounds. These compounds can inhibit histone deacetylase and are suitable for use in selectively inducing terminal differentiation, and arresting cell growth and/or apoptosis of neoplastic cells, thereby inhibiting proliferation of such cells. Thus, the compounds of the present invention are useful in treating a patient having a tumor characterized by proliferation of neoplastic cells. The compounds of the invention may also be useful in the prevention and treatment of TRX-mediated diseases, such as autoimmune, allergic and inflammatory diseases, and in the prevention and/or treatment of diseases of the central nervous system (CNS), such as neurodegenerative diseases. The present invention further provides pharmaceutical compositions comprising the compounds of the instant invention and safe dosing regimens of these pharmaceutical compositions, which are easy to follow, and which result in a therapeutically effective amount of these compounds in vivo.
We designed and synthesized a pyrilamine derivative 1 as a selective class I HDAC inhibitor that targets pyrilamine-sensitive proton-coupled organic cation antiporter (PYSOCA) at the blood–brain barrier (BBB). Introduction of pyrilamine moiety to benzamide type HDAC inhibitors kept selective class I HDAC inhibitory activity and increased BBB permeability. Our BBB transport study showed that compound 1
The invention relates to the inhibition of histone deacetylase. The invention provides compounds and methods for inhibiting histone deacetylase enzymatic activity. The invention also provides compositions and methods for treating cell proliferative diseases and conditions. One aspect of the invention provides compounds of formula (1):
in which T, A and X are as described herein.
inhibitors, which ended up with identification of compound 2 (Figure 1). Figure 1. Chemical structures of HDAC inhibitors Our lead optimization program of BBB permeable HDAC inhibitor 1 focused on its methoxy and dimethylamino groups based on the following reasons: (i) Demethylation of methoxy group and oxidation of benzene ring of 4-methoxybenzyl group are main pathways in metabolism of pyrilamine (Figure
The discovery of 6-amino nicotinamides as potent and selective histone deacetylase inhibitors
作者:Christopher L. Hamblett、Joey L. Methot、Dawn M. Mampreian、David L. Sloman、Matthew G. Stanton、Astrid M. Kral、Judith C. Fleming、Jonathan C. Cruz、Melissa Chenard、Nicole Ozerova、Anna M. Hitz、Hongmei Wang、Sujal V. Deshmukh、Naim Nazef、Andreas Harsch、Bethany Hughes、William K. Dahlberg、Alex A. Szewczak、Richard E. Middleton、Ralph T. Mosley、J. Paul Secrist、Thomas A. Miller
DOI:10.1016/j.bmcl.2007.08.023
日期:2007.10
series of histone deacetylase inhibitors within the benzamide structural class. Extensive exploration around the nicotinamide core led to the discovery of a class I selective HDAC inhibitor that possesses excellent intrinsic and cell-based potency, acceptable ancillary pharmacology, favorable pharmacokinetics, sustained pharmacodynamics in vitro, and achieves in vivo efficacy in an HCT116 xenograft