HDAC3 Inhibitor

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.

HDAC1-IN-3 is a potent Pf HDAC1 inhibitor. HDAC1-IN-3 shows antimalarial activity in wild-type and multidrug-resistant parasite strains. HDAC1-IN-3 shows a significant in vivo killing effect against all life cycles of parasites.

HDAC6/HSP90-IN-2 (compound 6e) is a dual inhibitor of HDAC6 and Hsp90, with IC₅₀s of 105.7 and 61 nM, respectively. HDAC6/HSP90-IN-2 can be used for the research of cancer.

Wee1/HDAC-IN-1 is a dual Wee1/HDAC inhibitor with an IC₅₀ of 1.2 nM for Wee1 and IC₅₀ values of 196 nM for HDAC1, 156 nM for HDAC3, and 55 nM for HDAC6. Wee1/HDAC-IN-1 exhibits strong antiproliferative activity against MV4-11 cells with an IC₅₀ of 0.076 μM. Wee1/HDAC-IN-1 selectively binds to Wee1 and HDACs. Wee1/HDAC-IN-1 interferes with DNA damage repair pathways and induces apoptosis in MV4-11 cells. Wee1/HDAC-IN-1 Wee1/HDAC-IN-1 can be used for the research of acute myeloid leukemia (AML).

CM-545, the cis-isomer of CM-414 (HY-119316), is a dual inhibitor of PDE5, HDAC1, HDAC2, HDAC3, and HDAC6 with pIC₅₀ values of 7.47, 6.65, 6.14, 6.55, and 6.84, repectively.

CDK9/HDAC1/HDAC3-IN-1 is dual-functional inhibitor of CDK9 and HDAC. CDK9/HDAC1/HDAC3-IN-1 inhibits the protein activity of CDK9/HDAC/HDAC3 with IC₅₀ s of 0.17  μM, 1.73  μM and 1.11 μM for CDK9, HDAC1, and HDAC3, respectively. CDK9/HDAC1/HDAC3-IN-1 inhibits cancer cells by inducing cell apoptosis and cell cycle arrest in the G2/M phase, as well as tumor growth in a murine TNBC MDA-MB-231 xenograft model. CDK9/HDAC1/HDAC3-IN-1 has a broad-spectrum anti-cancer activity, such as breast cancer, cervical cancer, and liver cancer.

ZWZH-21 is a selective and orally active HDAC1/2 dual inhibitor with IC₅₀ values of 34 nM for HDAC1 and 41 nM for HDAC2. ZWZH-21 can inhibit HCT116 and SW480 cells growth with IC₅₀ values of 0.524 μM and 1.063 μM, respectively. ZWZH-21 can inhibit proliferation and migration and induces apoptosis in multiple colorectal cancer cells. ZWZH-21 can be used for the research of cancer, such as colorectal cancer.

LSQ-28 is an orally active HDAC3 inhibitor with an IC₅₀ of 42 nM, and exhibits potent anticancer, antiproliferative, antimigratory, anti-invasive, and antiwound healing activities. LSQ-28 can be utilized in cancer research.

SM-06-09 is a potent, highly selective, orally active tetrazolone-based HDAC6 inhibitor with an IC₅₀ value of 0.49 nM. SM-06-09 promotes tumor-associated macrophage (TAM) polarization toward an antitumor M1-like phenotype and enhances macrophage phagocytosis, antigen presentation, and T-cell activation. SM-06-09 remodels the tumor immune microenvironment, exhibits antitumor activity in melanoma models, and enhances the efficacy of anti-PD-1 immune checkpoint blockade.

ST13, an ortho-hydroxyanilide, is a selective, slow- and tight-binding HDAC1 and HDAC2 inhibitor with IC₅₀s of 23 nM and 49 nM, respectively. ST13 shows a weak inhibition of HDAC3 (IC₅₀ = 4.30 μM) and HDAC6 (IC₅₀ > 10 μM). The induced fit mechanism of ST13 proceeds through a two-step process: first, the enzyme and inhibitor rapidly form a collision complex (EI), which then slowly transforms into the stable complex E*I. ST13 induces apoptosis in cancer cells. ST13 can be used for the study of melanoma and triple-negative breast.

HDAC-IN-88 (Compound HJ-9) is the inhibitor for HDAC that inhibits HDAC6, HDAC1, HDAC2, HDAC8 and HDAC3 with IC₅₀s of 0.226, 1.103, 2.308, 3.255 and 3.864 μM, respectively. HDAC-IN-88 inhibits the proliferation of cancer cell HepG2, HCT116 and MV4-11 with IC₅₀ of 5.47, 9.78 and 0.38 μM, inhibits the migration of HCT116, arrests the cell cycle at G0/G1 phase, and induces apoptosis and autophagy in MV4-11. HDAC-IN-88 reduces ROS level and mitochondrial membrane potential. HDAC-IN-88 exhibits antimalarial activity that inhibits P. falciparum 3D7 with EC₅₀ of 165 nM. HDAC-IN-88 also exhibits anti-angiogenic activity.

HDAC6-IN-85 is a selective HDAC6 inhibitor, with pIC₅₀ values of 5.4, 5.5, 5.9, and 4.8 against rHDAC1, rHDAC3, rHDAC6, and rHDAC8, respectively. HDAC6-IN-85 can be used in the research of cervical cancer, lung cancer, and colon cancer.

HDAC3-IN-6 (Compound SC26) is a selective HDAC3 inhibitor with an IC₅₀ of 53 nM. HDAC3-IN-6 dose-dependently induces the expression of PD-L1. HDAC3-IN-6 induces more pronounced Apoptosis and production of ROS. HDAC3-IN-6 exhibits high antitumor efficacy against colorectal cancer.

EGFR/HDAC-IN-1 (Compound 22c2) is a potent dual inhibitor of epidermal growth factor receptor (EGFR) and histone deacetylase (HDAC) with IC₅₀ values of 4.81 nM, 119.4 nM and 354.8 nM for EGFR, HDAC1 and HDAC3, respectively. EGFR/HDAC-IN-1 blocks the EGFR signaling pathway and affects the histone acetylation status, thereby inhibiting tumor cell proliferation. EGFR/HDAC-IN-1 is promising for research of non-small cell lung cancer (NSCLC).

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).

HDAC-IN-100 is a histone deacetylase inhibitor with an IC₅₀ of 0.038 μM against HDAC1, 0.283 μM against HDAC2, and 0.586 μM against HDAC3. HDAC-IN-100 acts as a chemosensitizer and apoptosis inducer, activates caspase 3/7, and reverses Cisplatin (HY-17394) resistance. HDAC-IN-100 exerts antiproliferative effects in ovarian cancer cells and squamous cancer cells. HDAC-IN-100 is applicable for research related to ovarian cancer, squamous cell carcinoma, and Cisplatin (HY-17394)-resistant squamous cell carcinoma.

HDAC-IN-43 is a potent HDAC 1/3/6 inhibitor with IC₅₀ values of 82, 45, and 24 nM, respectively. HDAC-IN-43 is a weak PI3K/mTOR inhibitors with IC₅₀ values of 3.6 and 3.7 μM, respectively. HDAC-IN-43 shows broad anti-proliferative activity .

MC2590 is a potent pyridine-containing histone deacetylase (HDAC) inhibitor. MC2590 is a inhibitor of HDAC1-3, -6, -8, and -10 (class I/IIb-selective inhibitor) with IC₅₀s of 0.015 μM-0.156 μM. MC2590 also inhibits HDAC isoforms HDAC4, HDAC5, HDAC7, HDAC9, HDAC11 with IC₅₀s of 1.35 μM-3.98 μM. MC2625 induces G2/M cell cycle arrest and modulates pro- and anti-apoptotic microRNAs towards apoptosis induction.

HDAC-IN-94 is a potent, selective HDAC6 inhibitor (IC₅₀ = 4.5 nM). HDAC-IN-94 shows >1000-fold selectivity over HDAC8 and shows minimal activity against other isoforms (HDAC1-3/10). HDAC-IN-94 induces α-tubulin hyperacetylation, apoptosis, and G2/M cell cycle arrest, exhibiting potent anti-tumor efficacy with low cytotoxicity. HDAC-IN-94 can be used for neuroblastoma and glioblastoma research.

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.