HDAC3 Inhibitor

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.

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).

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

BG45 is a potent HDAC3 inhibitor with IC₅₀ values of 0.289, 2, 2.2 and ﹥20 μM for HDAC3, HDAC1, HDAC2 and HDAC6, respectively. BG45 selectively targets multiple myeloma (MM) cells and induces caspase-dependent apoptosis.

Puzerinostat mesylate (Purinostat mesylate) is a highly selective class I/IIb histone deacetylase (HDAC) inhibitor, with IC₅₀ values of 0.81 nM, 1.4 nM, 1.7 nM, 3.8 nM, 11.5 nM, and 1.1 nM against HDAC1, HDAC2, HDAC3, HDAC8, HDAC6, and HDAC10, respectively. Puzerinostat mesylate enhances glutamine metabolism by upregulating GLS1. Puzerinostat mesylate induces cell Apoptosis and downregulates the expression of BCR-ABL and c-MYC. Puzerinostat mesylate delays the progression of Ph⁺ B-cell acute lymphoblastic leukemia and prolongs the survival of relevant mouse models. Puzerinostat mesylate regulates the immune microenvironment. Puzerinostat mesylate can be used in research related to chronic myeloid leukemia, Philadelphia chromosome-positive B-cell acute lymphoblastic leukemia, relapsed/refractory multiple myeloma, relapsed/refractory lymphoma, diffuse large B-cell lymphoma, and double-expression lymphoma.

Resminostat hydrochloride 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.

Bavarostat (EKZ-001) is a blood-brain barrier-permeable, potent HDAC6 inhibitor and PET radiotracer, with an IC₅₀ as low as 17 nM against human HDAC6. Bavarostat can be labeled with ¹⁸F and used as a probe to map HDAC6 distribution and measure target occupancy in the brains of non-human primates. Bavarostat also selectively modulates tubulin acetylation, but not histone acetylation. Bavarostat is applicable for research on Alzheimer's disease, other neurodegenerative disorders, and cancers.

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.Suberoyl bis-hydroxamic acid renders MM cells susceptible to apoptosis and facilitates the mitochondrial apoptotic pathways.Suberoyl bis-hydroxamic acid can be used for the study of medullary thyroid carcinoma (MTC).

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.

WT-161 is a potent and selective HDAC6 inhibitor with an IC₅₀ of 0.40 nM. WT-161 also inhibits metallo-β-lactamase domain-containing protein 2 (MBLAC2).

BRD2492 (compound 6d) is a potent, selective HDAC1 and HDAC2 inhibitor with IC₅₀s of 13.2 nM and 77.2 nM, respecrtively. BRD2492 exhibits >100-fold selectivity for HDAC1/2 over selectivity over HDAC3 and HDAC6. BRD2492 inhibits breast cancer cell lines growth with IC₅₀s of 1.01 μM and 11.13 μM for T-47D and MCF-7 cells, respectively.

Puzerinostat (Purinostat) is a highly selective class I/IIb histone deacetylase (HDAC) inhibitor, with IC₅₀ values of 0.81 nM, 1.4 nM, 1.7 nM, 3.8 nM, 11.5 nM, and 1.1 nM against HDAC1, HDAC2, HDAC3, HDAC8, HDAC6, and HDAC10, respectively. Puzerinostat enhances glutamine metabolism by upregulating GLS1. Puzerinostat induces cell Apoptosis and downregulates the expression of BCR-ABL and c-MYC. Puzerinostat delays the progression of Ph⁺ B-cell acute lymphoblastic leukemia and prolongs the survival of relevant mouse models. Puzerinostat regulates the immune microenvironment. Puzerinostat can be used in research related to chronic myeloid leukemia, Philadelphia chromosome-positive B-cell acute lymphoblastic leukemia, relapsed/refractory multiple myeloma, relapsed/refractory lymphoma, diffuse large B-cell lymphoma, and double-expression lymphoma.

AES-135, a hydroxamic acid-based pan-HDAC inhibitor, prolongs survival in an orthotopic mouse model of pancreatic cancer. AES-135 inhibits HDAC3, HDAC6, HDAC8, and HDAC11 with IC₅₀s ranging from 190-1100 nM.

SB-429201 is a potent and selective HDAC1 (IC₅₀~1.5 μM). SB-429201 displays at least a 20-fold preference for HDAC1 inhibition over HDAC3 and HDAC8.

NKL 22 is a potent and selective inhibitor of histone deacetylases (HDAC), with IC₅₀ values of 199 and 69 nM for HDAC1 and HDAC3, respectively. NKL 22 can reverse abnormal expression of HD‑related genes and restore the levels of key genes including Ppp1r1b in Huntington's disease transgenic mice. NKL 22 can be used for the researches of Huntington's disease and cancer.

HPOB is a highly potent and selective inhibitor of HDAC6 with an IC₅₀ of 56 nM. HPOB displays >30 fold less potent against other HDACs. HPOB enhances the effectiveness of DNA-damaging anticancer agents in transformed cells but not normal cells. HPOB does not block the ubiquitin-binding activity of HDAC6.

SIRT6-IN-3 (compound 8a) is a selective inhibitor of SIRT6 (IC₅₀=7.49 μM). SIRT6-IN-3 inhibits pancreatic ductal adenocarcinoma (PDAC) cells proliferation and induces apoptosis. SIRT6-IN-3 increases the sensitivity of cancer cells to gemcitabine (HY-17026) via blocking the DNA damage repair pathway. SIRT6-IN-3 is used in pancreatic cancer research.

BRD73954 is a potent HDAC inhibitor and selectively inhibiting both HDAC6 and HDAC8 with IC₅₀ values of 0.0036, 0.12, 9, 12, 23 µM for HDAC6, HDAC8, HDAC2, HDAC1 and HDAC3, respectively. BRD73954 decreases the levels of HDAC6, associated with upregulation of Ac-Tubulin.

Domatinostat tosylate (4SC-202) is a selective class I HDAC inhibitor with IC₅₀ of 1.20 μM, 1.12 μM, and 0.57 μM for HDAC1, HDAC2, and HDAC3, respectively. It also displays inhibitory activity against Lysine specific demethylase 1 (LSD1).

MC1742 is a potent HDAC inhibitor, with IC₅₀s of 0.1 μM, 0.11 μM, 0.02 μM, 0.007 μM, 0.61 μM, 0.04 μM and 0.1 μM for HDAC1, HDAC2, HDAC3, HDAC6, HDAC8, HDAC10 and HDAC11, respectively. MC1742 can increase acetyl-H3 and acetyl-tubulin levels and inhibits cancer stem cells growth. MC1742 can induce growth arrest, apoptosis, and differentiation in sarcoma CSC.