HDAC4 Inhibitor

Romidepsin (FK 228) is a Histone deacetylase (HDAC) inhibitor with anti-tumor activities. Romidepsin (FK 228) inhibits HDAC1, HDAC2, HDAC4, and HDAC6 with IC₅₀s of 36 nM, 47 nM, 510 nM and 1.4 μM, respectively. Romidepsin (FK 228) is produced by Chromobacterium violaceum, induces cell G2/M phase arrest and apoptosis.

Ricolinostat (ACY-1215) is a potent and selective HDAC6 inhibitor, with an IC₅₀ of 5 nM. ACY-1215 also inhibits HDAC1, HDAC2, and HDAC3 with IC₅₀s of 58, 48, and 51 nM, respectively.

Quisinostat (JNJ-26481585) is a potent and orally active pan-HDAC inhibitor (HDACi), with IC₅₀ values ranging from 0.11 nM to 0.64 nM for HDAC1, HDAC2, HDAC4, HDAC10 and HDAC11. Quisinostat has a broad spectrum antitumoral activity. Quisinostat can induce autophagy in neuroblastoma cells.

TMP195 is a selective class IIa histone deacetylase (HDAC) inhibitor with K_is of 59, 60, 26, 15 nM for HDAC4, HDAC5, HDAC7 and HDAC9, respectively.

HDAC6-IN-79 is a HDAC6 inhibitor with an IC₅₀ of 98.40 nM, and it also exhibits inhibitory activity against other HDAC subtypes (HDAC1: 639.0 nM, HDAC2: 798.9 nM, HDAC8: 865.7 nM, HDAC4: 1187 nM). HDAC6-IN-79 induces acetylation of α-tubulin and histone H3, reduces the viability of cancer cells, activates the autophagy pathway and induces apoptosis. HDAC6-IN-79 can be used for research related to urothelial carcinoma (bladder cancer).

Givinostat (ITF-2357) is a HDAC inhibitor with an IC₅₀ of 198 and 157 nM for HDAC1 and HDAC3, respectively. Givinostat can be used for Duchenne muscular dystrophy (DMD) research. Givinostat can penetrate the blood-brain barrier (BBB).

Tubacin is a potent and selective inhibitor of HDAC6, with an IC₅₀ value of 4 nM and approximately 350-fold selectivity over HDAC1. Tubacin also inhibits metallo-β-lactamase domain-containing protein 2 (MBLAC2).

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.

LMK-235 is a potent and selective HDAC4/5 inhibitor, inhibits HDAC5, HDAC4, HDAC6, HDAC1, HDAC2, HDAC11 and HDAC8, with IC₅₀s of 4.22 nM, 11.9 nM, 55.7 nM, 320 nM, 881 nM, 852 nM and 1278 nM, respectively, and is used in cancer research.

TMP269 is a novel and selective class IIa histone deacetylase (HDAC) inhibitor with IC₅₀s of 157 nM, 97 nM, 43 nM and 23 nM for HDAC4, HDAC5, HDAC7 and HDAC9, respectively.

Pracinostat is a potent histone deacetylase (HDAC) inhibitor, with IC₅₀s of 40-140 nM, used for cancer research. Pracinostat also inhibits metallo-β-lactamase domain-containing protein 2 (MBLAC2) hydrolase activity with an EC₅₀ below 10 nM.

CUDC-101 is a potent inhibitor of HDAC, EGFR, and HER2 with IC₅₀s of 4.4, 2.4, and 15.7 nM, respectively. CUDC-101 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

Nexturastat A is a potent, selective HDAC6 inhibitor. Nexturastat A has inhibitory for HDAC6 with an IC₅₀ of 5 nM. Nexturastat A can be used for the research of multiple myeloma (MM).

Givinostat hydrochloride monohydrate (ITF-2357 hydrochloride monohydrate) is a HDAC inhibitor with an IC₅₀ of 198 and 157 nM for HDAC1 and HDAC3, respectively. Givinostat hydrochloride monohydrate can penetrate the blood-brain barrier (BBB).

Quisinostat dihydrochloride (JNJ-26481585 dihydrochloride) is an orally active, potent pan-HDAC inhibitor with IC₅₀s of 0.11 nM, 0.33 nM, 0.64 nM, 0.46 nM, and 0.37 nM for HDAC1, HDAC2, HDAC4, HDAC10 and HDAC11, respectively. Quisinostat dihydrochloride has a broad spectrum antitumoral activity. Quisinostat dihydrochloride can induce autophagy in neuroblastoma cells.

BML-210 is a potent HDAC inhibitor. BML-210 can inhibit the HDAC4-VP16-driven reporter signal with an apparent IC₅₀ of ∼5 µM. BML-210 has a specific disruptive effect on the HDAC4:MEF2 interaction. BML-210 causes an increase in the G0/G1 phase. BML-210 induces apoptosis and displays antitumour activities in orthotopic mammary tumours in mice.

CHDI-390576, a potent, cell permeable and CNS penetrant class IIa histone deacetylase (HDAC) inhibitor with IC₅₀s of 54 nM, 60 nM, 31 nM, 50 nM for class IIa HDAC4, HDAC5, HDAC7, HDAC9, respectively, shows >500-fold selectivity over class I HDACs (1, 2, 3) and ~150-fold selectivity over HDAC8 and the class IIb HDAC6 isoform.

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.

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.

HDAC9-IN-1 is a selective class IIa HDAC inhibitor that binds to HDAC9 with an IC₅₀ of 40 nM. HDAC9-IN-1 potently inhibits HDACs 4 and 7 while showing weak activity against HDAC6 (IC₅₀ values: 180 nM (HDAC4), 190 nM (HDAC7), 970 nM (HDAC6)). HDAC9-IN-1 significantly inhibits several human cancer cells, induces apoptosis and DNA damage in human cancer cells, and modulates caspase-related proteins and p38 in human cancer cells. HDAC9-IN-1 can be used for the research of oral cancer, breast cancer, gastric cancer.