GSK3735967 is a potent, selective, non-nucleoside inhibitor of DNMT1 with IC50 of 40 nM.

GSK549 (GSK-549) is a potent, highly selective, BD2 domain-selective BET inhibitor with pIC50 of 7.8 (BRD4 BD2), 1150-fold selectivity over BD1.

GSK737 (GSK-737) is a potent, highly selective BET BD2 inhibitor with pIC50 of 7.3 (BRD4 BD2), 200-fold selectivity over BRD4 BD1.

HDAC3 inhibitor PT3 is a novel potent, selective, BBB-permeable HDAC3 inhibitor.PT3 exhibited higher selectivity for HDAC3 over HDAC1, HDAC6, and HDAC8 compared to the reference compound CI994.PT3 upregulated H3K9 acetylation, CREB 1, BDNF, TRKB, Nr4a2, c-fos, PKA, GAP 43 and MMP9 expression in mouse neuronal (N2A) cells.PT3 significantly improved the discrimination index in C57/BL6 mice in the novel object recognition (NOR) model, significant increased in H3K9 acetylation in hippocampus.PT3 upregulated CREB 1, BDNF, TRKB, Nr4a2, c-fos, PKA, GAP 43, PSD 95 and MMP9 expression in mice treated with PT3.

IMP-1575 (IMP1575) is a potent, selective Hedgehog acyltransferase (HHAT) inhibitor with Ki/IC50 of 38 nM/0.75 uM (Acyl-cLIP assay).IMP-1575 is the first sub-micromolar small-molecule HHAT inhibitor reported to-date.IMP‐1575 (50-0.023 μM) was therefore analyzed for effects on HHAT kinetics at varying Pal‐CoA concentrations (50–0.19 μM).IMP-1575 is a chemical tool and methodology to provide insight into HHAT which may expedite future studies and drug discovery efforts against this important target class.

iP300w is a potent p300/CBP inhibitor, inhibits p300-mediated H3K9 acetylation with IC50 of 33 nM in HTRF assay.iP300w diminishes DUX4-induced toxicity and inhibits DUX4-mediated transcription.iP300w blocks DUX4-induced H3 acetylation and prevents the increase in expression of DUX4 target genes, erases the DUX4-mediated transcriptional fingerprint in FSHD myoblasts.iP300w impairs DUX4-mediated transcription in vivo in the iDUX4pA FSHD mouse model.

IRBM6 (Class I HDAC-IN-6) is a potent, class I selective HDAC inhibitor with EC50 of 50 nM (HeLa cellular), HDAC1/2/3 IC50 of 1.7/2.8/1.1 nM.IRBM6 weakly inhibits HDAC6 (IC50=177 nM) and is inactive at 5 uM against HDACs 4-7.IRBM6 showed a potent inhibitory effect on the growth TC-797s and two additional NUT carcinoma (NC) cell lines, PER-403, and 10-15.IRBM6 induces a transcriptional program of differentiation in NC cells, demonstrated large-scale changes in gene expression that were significantly enriched with differentiation gene sets and depleted of pro-growth gene sets, including those of MYC and E2F targets.IRBM6 repressed growth and induced differentiation of NUT carcinoma (NC) cells in proportion to inhibition of NUT transcriptional activity.

KA2507 (KA-2507, KA 2507) is a potent and selective inhibitor of HDAC6 with IC50 of 2.5 nM, >300-fold selectivity over other HDACs.KA2507 demonstrated cellular potency (IC50=150 nM) in a cellular assay measuring induction of acetylated α-tubulin, a marker of HDAC6 inhibition.KA2507 displays antiproliferative effects against a set of 93 human cancer cells with IC50 of 2-30 uM.KA2507 inhibits tumor growth in the syngeneic B16-F10 mouse melanoma model.

KDOBA67 is a novel cell-permeable inhibitor of H3K27 lysine demethylase KDM6A/B, inhibits TBXT expression chordoma cell lines.KDOBA67 displayed in vitro inhibitory activity in the low micromolar range with IC50 values of 2 to 5 uM in various chordoma cell lines, leading to induction of apoptosis.H3K27 demethylase inhibition via KDOBA67 alters chromatin state at TBXT and inhibits its expression.TBXT was a KDM6A/B target gene, and chromatin changes at TBXT following KDOBA67 treatment were associated with a reduction in TBXT protein levels.KDOBA67 treatment downregulated expression of a network of transcription factors critical for chordoma survival and upregulated pathways dominated by ATF4-driven stress and proapoptotic responses.

LM146 (LM-146) is a potent and selective inhibitor of pan-PB1 bromodomains (Polybromo-1 protein, PBRM1 or BAF180), binds to PB1(2), PB1(5), and SMARCA2B with KD values of 110, 61, and 2100 nM, respectively.LM146 displayed 34-fold selectivity profile for PB1(5) over SMARCA2, showed no binding to any bromodomains outside the sub-family VIII at 10 uM.PB1 (Polybromo-1 protein) is a component of the BRG1/BRM-associated factor (PBAF) complex, a human analog of the yeast switch/sucrose non-fermenting (SWI/SNF) complex. PB1 is a unique epigenetic reader that contains six distinct bromodomains, while other known bromodomain-containing proteins possess at most two bromodomains. The multi-subunit PBAF complex contains three bromodomain-containing proteins (BCPs): BRD7, a member of the sub-family IV, and SMARCA4 (also known as BRG1) and PB1, two members of the sub-family VIII.

LSH-A54 is a potent, class I selective HDAC inhibitor with IC50 of 26.2 nM (HDAC1) and 59.3 nM (HDAC2); LSH-A54 displays no significant inhibition against HADC3/6 (IC50>10 uM). LSH-A54 exhibits antiproliferative properties against breast cancer cell lines T-47D (IC50=1.58 uM), MCF-7 (IC50=1.32 uM) and BT-474 (IC50=2.55 uM). LSH-A54 attenuates cell migration significantly in wound healing assay and comparably to the pan-HDACi vorinostat, whereas the HDAC1-3 selective HDACi entinostat has no significant effect on cell migration. LSH-A54 reduced the number of colonies significantly in clonogenic survival assay compared to entinostat and showed comparable activity to pan-HDACi vorinostat.

MINA53 inhibitor 9 is a first in class, potent, selective MINA53 inhibitor with IC50 of 1.6 uM, selective over NO66, KDM4-6 and other JmjC oxygenases.

miR-21 inhibitor 12 (miR-21-IN-12) is a small molecule inhibitor of microRNA-21 expression and inhibit miR-21 transcription.miR-21-IN-12 inhibited transcription of the miR-21 gene resulting in significant reductions in primary and mature miR-21 levels.miR-21-IN-12 demonstrated cytotoxicity in a cervical cancer cell line via induction of apoptosis and was capable of reducing microtumor formation in a long-term clonogenic assay.miR-21-IN-12 shows some level of selectivity for miR-21 and is not a general miRNA pathway inhibitor.

MJM-1 is a small-molecule brain-penetrant HDAC inhibitor that increases the overall level of histone 3 (H3) acetylation in prostate cancer cell line.MJM-1 injected intraperitoneally (i.p.) crossed the BBB in mice and could be detected in the hippocampus, a brain region that mediates memory.MJM-1 (post-training i.p. administration) enhanced hippocampus-dependent spatial memory consolidation in male mice.

MO-I-500 is a pharmacological inhibitor of m6A demethylase FTO, inhibits purified FTO demethylase catalyzing demethylation with IC50 of 8.7 uM.MO-I-500 treated cells exhibited a global increase in RNA methylation.HeLa cells treated with 25 μM MO-I-500 for 24 hours showed a 9.3% increase in N6-methyl-adenosine content in total RNA.MO-I-500 treatment caused a dramatic (>95%) inhibition in colony formation in SUM149-Luc cells.MO-I-500 modulates various microRNA in treated (25uM) HeLa cells.MO-I-500 treatment also led to decreased levels of FTO and IRX3 proteins in the SUM149 cells, with relatively little effect on cell growth.MO-I-500 can strongly reduce the adverse effects of streptozotocin (STZ) model of AD in human astrocytoma CCF-STTG1 cells.

MU1656 (MU 1656 ) is a potent, highly selective inhibitor of histone methyltransferase DOT1L with IC50 of 2 nM; MU1656 displays highly selectively against a panel of 37 methyltransferases. MU1656 is more metabolically stable and significantly less toxic in vivo than pinometostat.

MV1035 (MV-1035) is a novel small molecule that reduce U87 GBM cells migration and invasiveness, targeting m6A demethylase ALKBH5, also inhibits ALKBH2; MV1035 directly inhibits active recombinant ALKBH5 protein and, consequently, negatively regulates CD73 protein expression without affecting CD73 mRNA transcription. In PD-GSCs, MV1035 has a synergistic effect with TMZ in reducing cell viability and their ability to form spheres. MV1035 is able both to reduce the expression of MGMT and to inhibit ALKBH2 activity.

NAH-C3-GPKK is a potent, selective protein N-terminal methyltransferase 1 (NTMT1) bisubstrate inhibitor with Kiapp of 7 nM in endogenous proteomes.NAH-C3-GPKK also potently inhibit a methyltransferase complex HemK2-Trm112 (also known as KMT9-Trm112, IC50=0.3 uM).NAH-C3-GPKK is the first potent inhibitor for HemK2/KMT9.

NH4-13 is a potent, SIRT2-selective inhibitor with IC50 of 87 nM, no inhibition against SIRT1/3/5/6 (CI50>50 uM).NH4-13 (30 mg/kg) significantly impaired tumor growth in HCT-116 tumor xenograft.

NH4-6 is a potent, selective pan SIRT1-3 inhibitor with IC50 of 3.0/0.032/2.3 uM for SIRT1/2/3, respectively.NH4-6 does not inhibits SIRT5 and SIRT6.NH4-6 (30 mg/kg) significantly impaired tumor growth in HCT-116 tumor xenograft.

NN-390 (NN390) is a potent, selective HDAC6 inhibitor with IC50 of 9.8 nM, >200-550-fold selectivity over other HDAC isoforms.NN-390 inhibits primary cells of treatment-refractory Group 3 MB cells (SU_MB002) with IC50 of 2.33 uM.NN-390 is the first HDAC6-selective inhibitor to show therapeutic potential in metastatic Group 3 medulloblastoma (MB), an aggressive pediatric brain tumor often associated with leptomeningeal metastases and therapy resistance.NN-390 selectively targets cell population with a 44.3-fold therapeutic margin between patient-derived Group 3 MB cells in comparison to healthy neural stem cells.NN-390 demonstrated a 45-fold increased potency over HDAC6-selective clinical candidate citarinostat.

NR-160 (NR160) is a novel potent, selective inhibitor of histone deacetylase 6 (HDAC6) with IC50 of 30 nM, shows SI (75-1847 )over all HDAC class I isoforms.NR-160 induced α-tubulin acetylation (ac-α-tubulin) in treated acute myeloid leukemic (AML) cell line HL60, but not histone H3 (ac-H3) (a marker for the inhibition of class I HDACs).NR-160 enhances the cytotoxicity induction of bortezomib, epirubicin and daunorubicin on a panel of seven leukemia cell lines