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].
HDAC-IN-44 is a HDAC inhibitor with the IC50 value of 61.2 nM. HDAC-IN-44 shows high anticancer activity towards multiple cancer cell lines[1].
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].
HDAC6 degrader-3 is a potent and selective HDAC6 degrader via ternary complex formation and the ubiquitin-proteasome pathway with a DC50 value of 19.4 nM. HDAC6 degrader-3 has IC50s of 4.54 nM and 0.647 μM for HDAC6 and HDAC1, respectively. HDAC6 degrader-3 causes strong hyperacetylation of α-tubulin[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].
m-Carboxycinnamic acid bishydroxamide is a potent HDAC inhibitor, exhibiting ID50 values of 10 and 70 nM in vitro for HDAC1 and HDAC3, respectively[1]. m-Carboxycinnamic acid bishydroxamide also induces apoptosis and suppresses tumor growth[2].
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.
HDAC6-IN-6 (compound 6a) is a potent and BBB-penetrated HDAC6 inhibitor, with an IC50 of 0.025 μM. HDAC6-IN-6 exhibits strong inhibitory activity against Aβ1-42 self-aggregation and AChE, with IC50 values of 3.0 and 0.72 μM. HDAC6-IN-6 can enhance neurite outgrowth without significant neurotoxicity[1].
Pivanex (AN-9), a derivative of Butyric acid, is an HDAC inhibitor with antimetastic and antiangiogenic properties. Pivanex down-regulates bcr-abl protein and enhances apoptosis[1].
HDAC-IN-29 (compound 13b) is a potent pan-HDAC inhibitor. HDAC-IN-29 shows antitumor activity[1].
HDAC-IN-38 (compound 13) is a potent HDAC inhibitor. HDAC-IN-38 shows similar micro-molar inhibitory activity toward HDAC1, 2, 3, 5, 6, and 8. HDAC-IN-38 increases cerebral blood flow (CBF), attenuates cognitive impairment, and improves hippocampal atrophy. HDAC-IN-38 also increases the level of histone acetylation (H3K14 or H4K5)[1].
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].
Benzenebutyric acid is an inhibitor of HDAC and endoplasmic reticulum (ER) stress, used in cancer and infection research.
Corin is a dual inhibitor of histone lysine specific demethylase (LSD1) and histone deacetylase (HDAC), with a Ki(inact) of 110 nM for LSD1 and an IC50 of 147 nM for HDAC1.
Fimepinostat (CUDC-907) potently inhibits class I PI3Ks as well as classes I and II HDAC enzymes with an IC50 of 19/54/39 nM and 1.7/5.0/1.8/2.8 nM for PI3Kα/PI3Kβ/PI3Kδ and HDAC1/HDAC2/HDAC3/HDAC10 , respectively.
1-Naphthohydroxamic acid (Compound 2) is a potent and selective HDAC8 inhibitor with an IC50 of 14 μM. 1-Naphthohydroxamic acid is more selectively for HDAC8 than class I HDAC1 and class II HDAC6 (IC50 >100 μM). 1-Naphthohydroxamic acid does not increase global histone H4 acetylation and also does not reduce total intracellular HDAC activity[1][2].1-Naphthohydroxamic acid can induce tubulin acetylation[3].
DKFZ-748 is a selective HDAC10 inhibitor (pIC50=7.66), and shows anti-tumor activity[1].
COX-2-IN-23 (compound A10) is a potent both AChE and HDAC inhibitor with IC50 values of 0.12 and 0.23 nM. COX-2-IN-23 exhibits antioxidant activity and metal chelating properties. COX-2-IN-23 can be used in alzheimer's disease research[1].
JMJD3/HDAC-IN-1 (compound A5b) is a dual inhibitor targeting Jumonji domain-containing protein demethylase 3 (JMJD3) and histone deacetylase (HADC1, IC50=16 nM). JMJD3/HDAC-IN-1 promotes hypermethylation of histone H3K27 and hyperacetylation of H3K9, and also cleaves caspase-7 and PARP to induce apoptosis. JMJD3/HDAC-IN-1 effectively inhibits cancer cell cloning, migration, and invasion[1].
CRA-026440 hydrochloride is a potent, broad-spectrum HDAC (HDAC) inhibitor. The Ki values against recombinant HDAC isoenzymes HDAC1, HDAC2, HDAC3, HDAC6, HDAC8, and HDAC10 are 4 nM, 14 nM, 11 nM, 15 nM, 7 nM, and 20 nM respectively. CRA-026440 hydrochloride shows antitumor and antiangiogenic activities[1].
HDAC-IN-59 (compound 13a) is a potent histone deacetylase (HDAC) inhibitor. HDAC-IN-59 can promote the intracellular generation of ROS, cause DNA damage, block the cell cycle at G2/M phase, and activate the mitochondria-related apoptotic pathway to induce cell apoptosis[1].
HDAC6-IN-11 (Compound 9) is a selective HDAC6 inhibitor with the IC50 value of 20.7 nM. HDAC6-IN-11 has more than 300-fold selectivity over HDAC other isoforms. HDAC6-IN-11 shows anti-proliferative activities against cancer cells[1].
1-Alaninechlamydocin, a cyclic tetrapeptide, is a potent HDAC inhibitor (IC50=6.4 nM). 1-Alaninechlamydocin induces G2/M cell cycle arrest and apoptosis in MIA PaCa-2 cells[1].
HDAC8-IN-3 (compound P19) is a potent HDAC8 inhibitor with IC50 value of 9.3 μM and produces thermal stabilization. HDAC8-IN-3 has cytotoxicity and induces apoptosis in leukemic cell lines[1].
HDAC-IN-50 is a potent and orally active Apoptosis<0/b> and Apoptosis<1/b> dual inhibitor with IC50 values of 0.18, 1.2, 0.46, 1.4, 1.3, 1.6, 2.6, 13 nM for FGFR1, FGFR2, FGFR3, FGFR4, HDAC1, HDAC2, HDAC6, HDAC8, respectively. HDAC-IN-50 induces Apoptosis and cell cycle arrest at G0/G1 phase. HDAC-IN-50 decreases the expression of pFGFR1,>Apoptosis<2 pSTAT3. HDAC-IN-50 shows anti-tumor activity[1].