2. Signaling Pathways
  3. Cell Cycle/DNA Damage
    Epigenetics
  4. HDAC

HDAC

Histone deacetylases

HDAC

Related Products

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HDAC (Histone deacetylases) are a class of enzymes that remove acetyl groups (O=C-CH3) from an ε-N-acetyl lysine amino acid on ahistone, allowing the histones to wrap the DNA more tightly. This is important because DNA is wrapped around histones, and DNA expression is regulated by acetylation and de-acetylation. Its action is opposite to that of histone acetyltransferase. HDAC proteins are now also called lysine deacetylases (KDAC), to describe their function rather than their target, which also includes non-histone proteins. Together with the acetylpolyamine amidohydrolases and the acetoin utilization proteins, the histone deacetylases form an ancient protein superfamily known as the histone deacetylase superfamily.

HDAC Isoform Specific Products:

HDAC Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-13267
    Droxinostat
    		Inhibitor 99.08%
    Droxinostat (NS 41080) is a histone deacetylase (HDAC) inhibitor. Droxinostat selectively inhibits HDAC3, HDAC6, and HDAC8 with IC50 values of 16.9 μM, 2.47 μM, and 1.46 μM, respectively. Droxinostat can be used for the research of hepatocellular carcinoma (HCC).
    Droxinostat
  • HY-104008
    ACY-957
    		Inhibitor 99.63%
    ACY-957 is an orally active and selective inhibitor of HDAC1 and HDAC2, with IC50s of 7 nM, 18 nM, and 1300 nM against HDAC1/2/3, respectively, and shows no inhibition on HDAC4/5/6/7/8/9.
    ACY-957
  • HY-112719
    BRD 4354
    		Inhibitor 98.10%
    BRD 4354 is a moderately potent inhibitor of HDAC5 and HDAC9, with IC50s of 0.85 and 1.88 μM, respectively.
    BRD 4354
  • HY-B0246R
    Carbamazepine (Standard)
    		Inhibitor
    Carbamazepine (Standard) is the analytical standard of Carbamazepine. This product is intended for research and analytical applications. Carbamazepine is an orally active pressure-sensitive sodium ion channel blocker with an IC50 of 131 μM. Carbamazepine blocks voltage gated Na+, Ca2+, and K+ channels, and is also a HDAC inhibitor (IC50: 2 μM). Carbamazepine is an anticonvulsant and can be used for research of epilepsy and neuropathic pain.
    Carbamazepine (Standard)
  • HY-14718
    Resminostat
    		Inhibitor 99.44%
    Resminostat (RAS2410; 4SC-201) is a potent inhibitor of HDAC1, HDAC3 and HDAC6, with mean IC50 values of 42.5, 50.1, 71.8 nM, respectively, and shows less potent activities against HDAC8, with an IC50 of 877 nM.
    Resminostat
  • HY-126330
    SS-208
    		Inhibitor 99.00%
    SS-208 is a selective HDAC6 inhibitor, with an IC50 of 12 nM. SS-208 possesses anti-tumor activity in melanoma.
    SS-208
  • HY-13432
    Nanatinostat
    		Inhibitor 99.67%
    Nanatinostat (CHR-3996) is a potent, class I selective and orally active HDAC inhibitor with IC50s of 3 nM, 4 nM, and 7 nM for HDAC1, HDAC2, and HDAC3, respectively. Nanatinostat has low activity against HDAC5 (IC50 of 200 nM) and HDAC6 (IC50 of 2100 nM). Nanatinostat induces apoptosis in myeloma cells. Nanatinostat has potent anticancer effects, such as myeloma, advanced solid tumours and colorectal cancer.
    Nanatinostat
  • HY-115475
    SW-100
    		Inhibitor 99.93%
    SW-100, a selective histone deacetylase 6 (HDAC6) inhibitor with an IC50 of 2.3 nM, shows at least 1000-fold selectivity for HDAC6 relative to all other HDAC isozymes. SW-100 displays a significantly improved ability to cross the blood-brain-barrier.
    SW-100
  • HY-138799
    KA2507
    		Inhibitor 99.17%
    KA2507 is a potent, orally active and selective HDAC6 inhibitor, with an IC50 of 2.5 nM. KA2507 shows antitumor activities and immune modulatory effects in preclinical models.
    KA2507
  • HY-164782
    PT3
    		Inhibitor 99.94%
    PT3 is a selective inhibitor of HDAC3 with an IC50 value of 0.25 μM. PT3 exhibits good brain penetration ability and bioavailability upon oral administration. PT3 can be used in the research of Alzheimer’s disease.
    PT3
  • HY-123295
    HDAC3-IN-T247
    		Inhibitor 98.91%
    HDAC3-IN-T247 is a potent and selective HDAC3 (histone deacetylase 3) inhibitor, with an IC50 of 0.24 µM. HDAC3-IN-T247 induces a selective increase of NF-κB acetylation in HCT116 cells. HDAC3-IN-T247 shows anticancer and antiviral activity. HDAC3-IN-T247 inhibits growth of cancer cells, and activates HIV gene expression in latent HIV-infected cells.
    HDAC3-IN-T247
  • HY-102083
    BRD4884
    		Inhibitor 99.14%
    BRD4884 is a potent and brain-penetrant HDAC inhibitor with IC50 values of 29 nM, 62 nM, and 1090 nM for HDAC1, HDAC2, and HDAC3, respectively. BRD4884 can be used for the study of cognitive impairment.
    BRD4884
  • HY-135115
    Oleuropein Aglycone
    		Inhibitor 98.46%
    Oleuropein Aglycone (3,4-DHPEA-EA) is a polyphenol and the aglycone form of oleuropein (HY-N0292), formed by enzymatic, acidic or acetylated hydrolysis of oleuropein. Dietary intake of oleuropein Aglycone (50 mg/kg diet) increases the number of neuronal autophagic vesicles, reverses cognitive deficits in the TgCRND8 transgenic mouse model of Alzheimer's disease, and reduces the levels of histone deacetylase 2 (HDAC2) in the cortex and hippocampus. Oleuropein Aglycone increases urinary norepinephrine, interscapular brown adipose tissue epinephrine, and UCP1 protein levels, and reduced plasma leptin levels and total abdominal adipose tissue weight in a rat model of high-fat diet-induced obesity. Oleuropein Aglycone also reduced lung neutrophil infiltration, lipid peroxidation, and IL-1β levels in a mouse model of carrageenan-induced pleurisy.
    Oleuropein Aglycone
  • HY-10585R
    Valproic acid (Standard)
    		Inhibitor
    Valproic acid (Dipropylacetic Acid) (Standard) is an analytical standard for valproic acid. This product is intended for research and analytical applications. Valproic acid is an orally active HDAC inhibitor (IC50=0.5-2 mM), inhibits the activity of HDAC1 (IC50=400 μM), and induces the degradation of HDAC2. Valproic acid activates Notch1 signaling and inhibits the proliferation of small cell lung cancer (SCLC) cells. Valproic acid is used in the study of epilepsy, bipolar disorder, metabolic diseases, HIV infection, and migraine.
    Valproic acid (Standard)
  • HY-164233
    YX968
    		Inhibitor 98.06%
    YX968 is a potent and selective HDAC3/8 PROTAC dual degrader with DC50 values of 1.7 and 6.8 nM. YX968 exhibits antitumor activity by promoting apoptosis.(Pink: Target protein ligand (HY-168287); Black: linker (HY-W007700); Blue: E3 ligase ligand (HY-112078))
    YX968
  • HY-19772
    GSK3117391
    		Inhibitor 99.40%
    GSK3117391 (ESM-HDAC391; CHR-5154; HDAC-IN-3) is an orally active HDAC inhibitor with a IC50 of 55 nM. Using esterase-sensitive motif technology, GSK3117391 is selectively converted into its active acid metabolite HDAC189 in cells expressing carboxylesterase-1. GSK3117391 induces sustained global protein acetylation in monocytes, inhibits the production of proinflammatory cytokines, depletes circulating monocytes, downregulates the expression of CSF1R, and inhibits monocyte adhesion and differentiation. GSK3117391 can be used in the research of chronic inflammatory diseases.
    GSK3117391
  • HY-161305
    SE-7552
    		Inhibitor 99.48%
    SE-7552, a 2-(difluoromethyl)-1,3,4-oxadiazole (DFMO) derivative, is an orally active, highly selective, non-hydroxamate HDAC6 inhibitor with an IC50 of 33 nM. SE-7552 is greater than 850-fold selectivity versus all other known HDAC isozymes. SE-7552 is capable of blocking multiple myeloma growth in vivo. SE-7552 acts as an anti-obesity agent in diet-induced obese mice.
    SE-7552
  • HY-N5084
    Pinocembrin 7-O-[3''-O-galloyl-4'',6''-hexahydroxydiphenoyl]-β-D-glucoside
    		Inhibitor 98.92%
    Pinocembrin 7-O-[3''-O-galloyl-4'',6''-hexahydroxydiphenoyl]-β-D-glucoside is a TRPV1 antagonist and HDAC7 inhibitor. Pinocembrin 7-O-[3''-O-galloyl-4'',6''-hexahydroxydiphenoyl]-β-D-glucoside blocks TRPV1-mediated calcium influx, suppresses phosphorylation of p65, IκBα, p38, JNK, and ERK1/2, inhibiting NF-κB and MAPK signaling cascades. Pinocembrin 7-O-[3''-O-galloyl-4'',6''-hexahydroxydiphenoyl]-β-D-glucoside reduces production and gene expression of pro-inflammatory cytokines IL-1β, IL-6, and TNF-α. Pinocembrin 7-O-[3''-O-galloyl-4'',6''-hexahydroxydiphenoyl]-β-D-glucoside exhibits potent analgesic activity, elevates thermal pain threshold and mechanical pain threshold in murine models. Pinocembrin 7-O-[3''-O-galloyl-4'',6''-hexahydroxydiphenoyl]-β-D-glucoside restores CD8+ T cell infiltration into bladder cancer tumors and improves bladder cancer immunotherapy efficacy. Pinocembrin 7-O-[3''-O-galloyl-4'',6''-hexahydroxydiphenoyl]-β-D-glucoside can be used for the researches of painand bladder cancer.
    Pinocembrin 7-O-[3''-O-galloyl-4'',6''-hexahydroxydiphenoyl]-β-D-glucoside
  • HY-19348
    Pimelic Diphenylamide 106
    		Inhibitor 98.54%
    Pimelic Diphenylamide 106 (TC-H 106) is a slow, tight binding class I HDAC inhibitor (inhibits HDAC1, 2, and 3 with IC50 values of 150 nM, 760 nM, and 370 nM, respectively), with no activity against class II HDACs. Pimelic Diphenylamide 106 modulates dopamine concentration and protects dopamine cells by inducing VMAT2 expression. Pimelic Diphenylamide 106 can be used in the study of neuropsychiatric diseases such as attention deficit hyperactivity disorder (ADHD).
    Pimelic Diphenylamide 106
  • HY-164099
    LSD1/HDAC6-IN-2
    		Inhibitor 99.66%
    LSD1/HDAC6-IN-2 (JBI-802) is an orally active LSD1/HDAC6/MAO-A inhibitor, with IC50 values of 5 nM, 11 nM, and 5 nM, respectively. LSD1/HDAC6-IN-2 can inhibit the growth of multiple myeloma cells MM.1S, MM.1R, and RPMI-8226. LSD1/HDAC6-IN-2 can be used for research on diseases such as acute myeloid leukemia and lymphoma.
    LSD1/HDAC6-IN-2
Cat. No. Product Name / Synonyms Application Reactivity
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Download HDAC Signaling Pathway Map.

TCR, GPCR and HDAC II interaction: Diverse agonists act through G-protein-coupled receptors (GPCRs) to activate the PKC-PKD axis, CaMK, Rho, or MHC binding to antigens stimulates TCR to activate PKD, leading to phosphorylation of class II HDACs. Phospho-HDACs dissociate from MEF2, bind 14-3-3, and are exported to the cytoplasm through a CRM1-dependent mechanism. CRM1 is inhibited by leptomycin B (LMB). Release of MEF2 from class II HDACs allows p300 to dock on MEF2 and stimulate gene expression. Dephosphorylation of class II HDACs in the cytoplasm enables reentry into the nucleus[1].

 

TLR: TLR signaling is initiated by ligand binding to receptors. The recruitment of TLR domain-containing adaptor protein MyD88 is repressed by HDAC6, whereas NF-κB and MTA-1 can be negatively regulated by HDAC1/2/3 and HDAC2, respectively. Acetylation by HATs enhance MKP-1 which inhibits p38-mediated inflammatory responses, while HDAC1/2/3 inhibits MKP-1 activity. HDAC1 and HDAC8 repress, whereas HDAC6 promotes, IRF function in response to viral challenge. HDAC11 inhibits IL-10 expression and HDAC1 and HDAC2 represses IFNγ-dependent activation of the CIITA transcription factor, thus affecting antigen presentation[2][3].

 

IRNAR: IFN-α/β induce activation of the type I IFN receptor and then bring the receptor-associated JAKs into proximity. JAK adds phosphates to the receptor. STATs bind to the phosphates and then phosphorylated by JAKs to form a dimer, leading to nuclear translocation and gene expression. HDACs positively regulate STATs and PZLF to promote antiviral responses and IFN-induced gene expression[2][3].

 

Cell cycle: In G1 phase, HDAC, Retinoblastoma protein (RB), E2F and polypeptide (DP) form a repressor complex. HDAC acts on surrounding chromatin, causing it to adopt a closed chromatin conformation, and transcription is repressed. Prior to the G1-S transition, phosphorylation of RB by CDKs dissociates the repressor complex. Transcription factors (TFs) gain access to their binding sites and, together with the now unmasked E2F activation domain. E2F is then free to activate transcription by contacting basal factors or by contacting histone acetyltransferases, such as CBP, that can alter chromatin structure[4].

 

The function of non-histone proteins is also regulated by HATs/HDACs. p53: HDAC1 impairs the function of p53. p53 is acetylated under conditions of stress or HDAC inhibition by its cofactor CREB binding protein (CBP) and the transcription of genes involved in differentiation is activated. HSP90: HSP90 is a chaperone that complexes with other chaperones, such as p23, to maintain correct conformational folding of its client proteins. HDAC6 deacetylates HSP90. Inhibition of HDAC6 would result in hyperacetylated HSP90, which would be unable to interact with its co-chaperones and properly lead to misfolded client proteins being targeted for degradation via the ubiquitin-proteasome system[5][6].
 

Reference:

[1]. Vega RB, et al. Protein kinases C and D mediate agonist-dependent cardiac hypertrophy through nuclear export of histone deacetylase 5.Mol Cell Biol. 2004 Oct;24(19):8374-85.
[2]. Shakespear MR, et al. Histone deacetylases as regulators of inflammation and immunity. Trends Immunol. 2011 Jul;32(7):335-43.
[3]. Suliman BA, et al. HDACi: molecular mechanisms and therapeutic implications in the innate immune system.Immunol Cell Biol. 2012 Jan;90(1):23-32. 
[4]. Brehm A, et al. Retinoblastoma protein meets chromatin.Trends Biochem Sci. 1999 Apr;24(4):142-5.
[5]. Butler R, et al. Histone deacetylase inhibitors as therapeutics for polyglutamine disorders.Nat Rev Neurosci. 2006 Oct;7(10):784-96
[6]. Minucci S, et al. Histone deacetylase inhibitors and the promise of epigenetic (and more) treatments for cancer.Nat Rev Cancer. 2006 Jan;6(1):38-51.

HDAC Isoform Comparison

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