deacetylases

NKL 22 (Histone Deacetylase Inhibitor IV) is an effective Histone Deacetylase Inhibitor.

Tasquinimod (ABR-215050) is an oral antiangiogenic agent with potential antitumor activity. It is also an S100A9 inhibitor and binds to the HDAC4Zn2+ binding structural domain with Kd values between 10 and 30 nM.

MPI_5a is an effective and selective inhibitor of HDAC6 (IC50=36 nM). MPI_5a weakly inhibits other HDAC isoforms and it also inhibits acyl-tubulin accumulation in cells (IC50: 210 nM).

Romidepsin (FR 901228) is an HDAC inhibitor that inhibits HDAC1 2 4 6 (IC50=36 47 510 1400 nM). Romidepsin has antitumor activity and can be used for the treatment of peripheral T-cell lymphoma and cutaneous T-cell lymphoma.

Vorinostat (SAHA) is a pan-histone deacetylase (HDAC) inhibitor (IC50=10 nM) with inhibitory activity against HDAC1 2 3 6 7 11. Vorinostat has antitumor activity, induces cell differentiation, blocks the cell cycle and induces apoptosis.

Trichostatin A (TSA), a natural derivative of diene isohydroxamic acids, is a specific and reversible histone deacetylase inhibitor (IC50=1.8 nM) that induces hyperacetylation of core histones to regulate chromatin structure.

ITSA-1 is membrane permeable and specifically suppresses TSA inhibition of HDAC (histone deacetylase), but shows no activity towards other HDAC inhibitors.

Valproic Acid (2-Propylpentanoic Acid) is an HDAC inhibitor that inhibits HDAC1 activity, induces HDAC2 degradation, and is orally active. Valproic Acid can be used in epilepsy and bipolar disorder research.

CM-675 is a dual inhibitor of phosphodiesterase 5 (PDE5) and class I histone deacetylases (IC50s: 114 nM and 673 nM for PDE5 and HDAC1) with the potential to treat Alzheimer's disease.

Theophylline monohydrate (Quibron) appears to inhibit phosphodiesterase and prostaglandin production, regulate calcium flux and intracellular calcium distribution, and antagonize adenosine. Theophylline monohydrate is a natural alkaloid derivative of xanthine isolated from the plants Camellia sinensis and Coffea arabica. Physiologically, this agent relaxes the bronchial smooth muscle, produces vasodilation (except in cerebral vessels), stimulates the CNS, stimulates the cardiac muscle, induces diuresis, and increases gastric acid secretion; it may also suppress inflammation and improve contractility of the diaphragm.

Sinapinic Acid (Synapoic acid) protects the rat liver from CCl4-induced inflammation, most likely by acting as a free radical scavenger and modulator of NF-κB p65 activation and proinflammatory cytokine expression. Sinapic acid with antioxidant role protects cardiac cells and its functions from I R induced oxidative stress. Sinapic acid is a potentially useful agent for the protection against liver fibrosis and cirrhosis. Sinapic acid prevents the alterations in the levels of lipids and lipoproteins by virtue of its anti-lipidaemic effect in isoproterenol induced myocardial infarcted rats. Sinapic acid ameliorates hyperglycemia through PLC-PKC signals to enhance the glucose utilization in diabetic rats.

Tacedinaline (CI994) is a selective class I HDAC inhibitor with potential antineoplastic activity.

Belinostat (PXD101) is an inhibitor of hydroxamic acid-type histone deacetylase (HDAC, IC50 of 27 nM in HeLa cell extracts),and with antineoplastic activity.

Panobinostat (NVP-LBH589) is a broad-spectrum HDAC inhibitor (IC50=5 nM) with oral activity and non-selectivity. Panobinostat has antitumor activity and induces apoptosis and autophagy.

Divalproex Sodium (Valproate semisodium) binds to and inhibits gamma-aminobutyric acid (GABA) transaminase and its anticonvulsant activity may be exerted by increasing brain concentration of GABA and by inhibiting enzymes that catabolize GABA or block the reuptake of GABA into glia and nerve endings. It also is an HDAC inhibitor, Comprised of sodium valproate and valproic acid with anticonvulsant and antiepileptic activities. Divalproex may also work by suppressing repetitive neuronal firing through the inhibition of voltage-sensitive sodium channels.

Sodium 4-phenylbutyrate (TriButyrate), a transcriptional regulator, reversibly inhibits class I and II histone deacetylases (HDACs )resulting in a global increase in gene expression, decreased cellular proliferation, increased cell differentiation, and the induction of apoptosis in susceptible tumor cell populations.

Sodium butanoate (Sodium Butyrate) is the sodium salt of butyrate with potential antineoplastic activity. Butyrate, a short chain fatty acid, competitively binds to the zinc sites of class I and II histone deacetylases (HDACs).

2-hexyl-4-Pentynoic Acid, a valproic acid (VPA) derivatives, is a potent and robust HDACs inhibitor with IC50 value of 13 μM.

Pivanex (Pivalyloxymethyl butyrate) is an orally active HDAC inhibitor and an antimetastatic and antiangiogenic agent. Pivanex downregulates the Bcr-Abl protein and enhances apoptosis.

Bufexamac (Bufexamic acid) is a COX inhibitor for IFN-α release with anti-inflammatory, analgesic, and antipyretic action.

4-Phenylbutyric acid (Benzenebutyric acid) is a histone deacetylase (HDAC) inhibitor and an endoplasmic reticulum stress (ERS) inhibitor. 4-Phenylbutyric acid can be used to treat urea cycle disorders.

Valproic acid sodium salt (Sodium Valproate) is the sodium salt form of valproic acid with anti-epileptic activity. Valproic acid sodium salt is converted into its active form, valproate ion, in blood. Although the mechanism of action remains to be elucidated, Valproic acid sodium salt increases concentrations of gamma-aminobutyric acid (GABA) in the brain, probably due to inhibition of the enzymes responsible for the catabolism of GABA. This potentiates the synaptic actions of GABA. Valproic acid sodium salt may also affect potassium channels, thereby creating a direct membrane-stabilizing effect.

Scriptaid (GCK1026) is an inhibitor of HDAC, and has a greater effect on acetylated H4 than H3.

Remetinostat (SHP-141), a hydroxamic acid-based inhibitor of histone deacetylase enzymes, is currently being developed for the treatment of cutaneous T-cell lymphoma.