HDAC6 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.

Belinostat (PXD101; PX105684) is a potent HDAC inhibitor with an IC₅₀ of 27 nM in HeLa cell extracts.

Tubastatin A is a potent and selective HDAC6 inhibitor with an 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 also inhibits HDAC10 and metallo-β-lactamase domain-containing protein 2 (MBLAC2).

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.

Hsp110/HDAC6-IN-1 is an orally active Hsp110/HDAC6 dual inhibitor. Hsp110/HDAC6-IN-1 disrupts Hsp110-STAT3 protein-protein interaction, suppresses HDAC6 enzymatic activity, and suppresses STAT3 signaling pathway. Hsp110/HDAC6-IN-1 inhibits abnormal proliferation and migration of human pulmonary arterial endothelial cells, and suppresses pulmonary vascular remodeling in rats. Hsp110/HDAC6-IN-1 can be used for the research of pulmonary arterial hypertension.

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.

Santacruzamate A (CAY-10683, STA) is a potent and selective HDAC2 inhibitor with an IC₅₀ of 119 pM. STA also exerts neuroprotective property against amyloid-β protein fragment 25–35. STA can be used for cancer and neurological disease research.

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).

PCI-34051 is a potent and selective HDAC8 inhibitor with IC₅₀ of 10 nM, with >200-fold selectivity over the other HDAC isoforms.

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.

Tubastatin A Hydrochloride (Tubastatin A HCl) 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 Hydrochloride also inhibits HDAC10 and metallo-β-lactamase domain-containing protein 2 (MBLAC2).

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.

Abexinostat (CRA 024781) is a novel pan-HDAC inhibitor mostly targeting HDAC1 with K_i of 7 nM. Abexinostat 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).