Tubastatin A (TSA) TFA is a potent and selective?HDAC6?inhibitor with?IC50?of 15 nM in a cell-free assay, and is selective (1000-fold more) against all other isozymes except HDAC8 (57-fold more). Tubastatin A TFA also inhibits HDAC10 and metallo-β-lactamase domain-containing protein?2 (MBLAC2).
4-Phenylbutyric acid-d2 is the deuterium labeled 4-Phenylbutyric acid[1]. 4-Phenylbutyric acid (4-PBA) is an inhibitor of HDAC and endoplasmic reticulum (ER) stress, used in cancer and infection research.
2-Hexyl-4-pentynoic acid ((±)-2-Hexyl-4-pentynoic acid), valproic acid (VPA) derivative, exhibits potential roles of HDAC inhibition (IC50=13 µM) and HSP70 induction. Potent neuroprotective effects. 2-Hexyl-4-pentynoic acid causes histone hyperacetylation and protect against glutamate-induced excitotoxicity in cultured neurons[1].
Sulforaphane is an isothiocyanate present naturally in widely consumed vegetables; has shown anticancer and cardioprotective activities.
Crebinostat is a potent histone deacetylase (HDAC) inhibitor with IC50 values of 0.7 nM, 1.0 nM, 2.0 nM and 9.3 nM for HDAC1, HDAC2, HDAC3 and HDAC6, respectively. Crebinostat potently induces acetylation of both histone H3 and histone H4 as well as enhances the expression of the cAMP response element-binding protein (CREB) target gene Egr1. Crebinostat increases the density of synapsin-1 punctae along dendrites in cultured neurons. Crebinostat can modulate chromatin-mediated neuroplasticity and exhibits enhanced memory in mice[1].
Tubacin is a potent and selective inhibitor of HDAC6, with an IC50 value of 4 nM and approximately 350-fold selectivity over HDAC1.
HDAC6-IN-4 (C10) is a potent, orally active and highly selective HDAC6 inhibitor with an IC50 value of 23 nM. HDAC6-IN-4 induces cancer cells apoptosis and shows significant antitumor efficacy, without obvious toxicity[1].
J1038 is a novel Inhibitor of Histone Deacetylase 8 (HDAC8).
HDAC-IN-40 is a potent alkoxyamide-based HDAC inhibitor with Ki values of 60 nM and 30 nM for HDAC2 and HDAC6, respectively. HDAC-IN-40 had antitumor effects[1].
Nampt-IN-3 (Compound 35) simultaneously inhibit nicotinamide phosphoribosyltransferase (NAMPT) and HDAC with IC50s of 31 nM and 55 nM, respectively. Nampt-IN-3 effectively induces cell apoptosis and autophagy and ultimately leads to cell death[1].
HDAC1/2-IN-3 is a HDAC1 and HDAC2 inhibitor with IC50 values 0-5 and 5-10 nM, respectively.
HDAC-IN-26 is a highly selective class I HDAC inhibitor with an EC50 value of 4.7 nM.
HDAC6/HSP90-IN-1 (compound 17) is a potent and selective dual inhibitor of HDAC6 and HSP90, with IC50 values of 4.3 and 46.8 nM, respectively. HDAC6/HSP90-IN-1 down-regulates PD-L1 expression in INF-γ treated H1975 lung cancer cells. HDAC6/HSP90-IN-1 inhibits tumor growth in human H1975 xenograft mice[1].
HDAC6-IN-5 (compound 11b) is a potent and BBB-penetrated HDAC6 inhibitor, with an IC50 of 0.025 μM. HDAC6-IN-5 exhibits strong inhibitory activity against Aβ1-42 self-aggregation and AChE, with IC50 values of 3.0 and 0.72 μM. HDAC6-IN-5 can enhance neurite outgrowth without significant neurotoxicity[1].
YF479, a novel HDAC inhibitor, displays more potent anti-tumor activity in vitro and in vivo compared with hydroxamic acid (SAHA).
SS-208 is a selective HDAC6 inhibitor, with an IC50 of 12 nM. SS-208 possesses anti-tumor activity in melanoma[1].
MPI_5a is a potent and selective HDAC6 inhibitor (IC50=36 nM). MPI_5a weakly inhibits other HDAC isoforms. MPI_5a inhibits acyl-tubulin accumulation in cells with an IC50 value of 210 nM[1].
A2AAR/HDAC-IN-2 is a potent A2AAR/HDAC dual inhibitor, with good binding affinity for A2AAR (Ki=10.3 nM) and good inhibitory activity against HDAC1 (IC50=18.5 nM). A2AAR/HDAC-IN-2 can be used in study of antitumor[1].
HDAC4-IN-1 (compound 1a) is a class IIa HDACI inhibitor (IC50=0.077 μM). HDAC4-IN-1 can enhance Caspase-induced Apoptosis. HDAC4-IN-1 has anticancer activity. HDAC4-IN-1 can be used in the research of drug combination against cancer[1].
Boc-Lys(Ac)-AMC is a cell-permeable fluorometric HDAC substrate (Ex/Em = 355 nm/460 nm)[1][2].
9-Hydroxyoctadecanoic acid (9-HSA) is an HDAC1 inhibitor that inhibits ∼66.4% HDAC1 enzymatic activity at 5 μM. 9-Hydroxyoctadecanoic acid shows anticancer activity[1].
Suberoyl bis-hydroxamic acid (Suberohydroxamic acid; SBHA) is a competitive and cell-permeable HDAC1 and HDAC3 inhibitor with ID50 values of 0.25 μM and 0.30 μM, respectively[1].Suberoyl bis-hydroxamic acid renders MM cells susceptible to apoptosis and facilitates the mitochondrial apoptotic pathways[2].Suberoyl bis-hydroxamic acid can be used for the study of medullary thyroid carcinoma (MTC)[3].
Remetinostat (SHP-141) is a hydroxamic acid-based inhibitor of histone deacetylase enzymes (HDAC) which is under development for the treatment of cutaneous T-cell lymphoma[1].
NCC-149 is a selective HDAC8 inhibitor and can be used for neural differentiation research[1].
CDK/HDAC-IN-2 is a potent HDAC/CDK dual inhibitor with IC50 of 6.4, 0.25, 45, >1000, 8.63, 0.30, >1000 nM for HDAC1, HDAC2, HDAC3, HDAC6,8, CDK1, CDK2, CDK4,6,7, respectively. CDK/HDAC-IN-2 shows excellent antiproliferative activities. CDK/HDAC-IN-2 induces apoptosis and cell cycle arrest at G2/M phase. CDK/HDAC-IN-2 shows potent antitumor efficacy[1].
c-Met/HDAC-IN-2 is a highly potent c-Met and HDAC dual inhibitor with IC50s of 18.49 nM and 5.40 nM for HDAC1 and c-Met, respectively. c-Met/HDAC-IN-2 has antiproliferative activities against certain cancer cell lines. c-Met/HDAC-IN-2 can cause G2/M-phase arrest and induce apoptosis in HCT-116. c-Met/HDAC-IN-2 can be used for researching anti-cancer resistance[1].
HDAC-IN-31 is a potent, selective and orally active HDAC inhibitor with IC50s of 84.90, 168.0, 442.7, >10000 nM for HDAC1, HDAC2, HDAC3, HDAC8, respectively. HDAC-IN-31 induces apoptosis and cell cycle arrests at G2/M phase. HDAC-IN-31 shows good antitumor efficacy. HDAC-IN-31 has the potential for the research of diffuse large B-cell lymphoma[1].
PTG-0861 (JG-265) is a novel potent, selective HDAC6 inhibitor with IC50 of 5.92 nM, >36-fold selectivity over other HDACs.PTG-0861 (JG-265) displays HDAC6 cellular target engagement with EC50 of 0.59 uM (ELISA), has in vitro and cellular selectivity superior to HDAC6-selective inhibitor citarinostat (ACY-241).PTG-0861 (JG-265) demonstrates potency against several blood cancer cell lines (e.g. MV4-11, MM1S), whilst showing limited cytotoxicity against non-malignant cells and CD-1 mice.PTG-0861 (JG-265) exihibits promising in vitro pharmacokinetics achieved with good safety profile in cells and in vivo.
Valproic acid sodium salt is an anticonvulsants used to treat epilepsy, bipolar disorder and migraines. Valproic acid inhibits histone deacetylase 1 (HDAC1) with an IC50 of 0.4 mM.
4-Iodo-SAHA (1k) is an orally active class I and class II histone deacetylase (HDAC) inhibitor with EC50s of 1.1, 0.95, 0.12, 0.24, 0.85 and 1.3 μM for Skbr3, HT29, U937, JA16 and HL60 cell lines, respectively. 4-Iodo-SAHA (1k) can be used for the research of cancer[1].