E1/E2/E3 Enzyme Inhibitor

NVP-CGM097 is a potent and selective MDM2 inhibitor with IC₅₀ of 1.7±0.1 nM for hMDM2.

PELI1-IN-1 (compound 3d) is a potent inhibitor of PELI1, E3 ubiquitin ligase. PELI1-IN-1 has anti-tumPELI1-IN-1, a Resveratrol (HY-16561) derivative, is an orally active PELI1 Inhibitor (K_d = 8.2 μM). PELI1-IN-1 markedly interrupts the interaction of PELI1 and SNAIL/SLUG, and inhibits the K63-polyubiquitization of SNAIL/SLUG by PELI1, subsequently downregulating the protein levels of epithelial-mesenchymal transition (EMT) effectors SNAIL/SLUG. PELI1-IN-1 significantly reduces the level of SNAIL, SLUG and Vimentin without affecting the PELI1 expression. PELI1-IN-1 targets the FHA domain of PELI1 and disrupts the interaction, leading to the anti-metastasis of TNBC cells in vitro and in vivo. PELI1-IN-1 shows no evident toxicity in vivo.

MyoMed 205 is an orally active muscle ring finger protein 1 (MuRF1) inhibitor. MyoMed-205 reduces ubiquitination and subsequent proteasomal degradation of muscle proteins by inhibiting MuRF1 activity. MyoMed 205 augments muscle performance, attenuates muscle weight loss and alleviates disease-induced weight loss. MyoMed 205 can be used for the research of cancer cachexia, type 2 diabetes mellitus, and heart failure with preserved ejection fraction.

Skp2 inhibitor 3 is an orally active inhibitor of the Skp2-Cks1 complex, with an IC₅₀ of 4.86 μM. Skp2 inhibitor 3 reduces Skp2 protein expression while upregulating the expression of p21 and p27. Skp2 inhibitor 3 inhibits colony formation and migration of cancer cells, and induces cell cycle arrest at the S phase. Skp2 inhibitor 3 suppresses tumor growth in xenograft mice. Skp2 inhibitor 3 can be used in the research of gastric cancer and prostate cancer.

Skp2 inhibitor 2 is a Skp2-Cks1 protein-protein interaction inhibitor with a human IC₅₀ of 0.57 μM. Skp2 inhibitor 2 binds to Skp2 at the interaction interface to block Skp2-Cks1 complex formation. Skp2 inhibitor 2 can be used for the research of gastric cancer, non-small cell lung cancer, breast cancer, prostate cancer.

SMER3, a Rapamycin enhancer, is a selective Skp1-Cullin-F-box (SCF)^Met30 ubiquitin ligase inhibitor. SMER3 enhances Rapamycin's growth inhibitory effect by inhibition of SCF^Met30.

SENP1-IN-3 is a specific deSUMOylation protease 1 (SENP1) inhibitor extracted from patent CN110627860, Compound 17. SENP1-IN-3 is developed for tumor radiosensitivity enhancement.

MI-1061 is a potent, orally bioavailable, and chemically stable MDM2 (MDM2-p53 interaction) inhibitor (IC₅₀=4.4 nM; K_i=0.16 nM). MI-1061 potently activates p53 and induces apoptosis in the SJSA-1 xenograft tumor tissue in mice. Anti-tumor activity.

U7D-1 is a USP7 PROTAC degrader that induces selective proteasomal degradation of USP7. U7D-1 destabilizes and downregulates the expression of variant PRC1 complex subunits PCGF1, RING1A and PCGF6, and also slightly reduces the protein level of KDM2B. U7D-1 decreases cell viability, arrests neuroblastoma cells at the G0/G1 cell cycle phase, and downregulates the expression of target genes of PAX3::FOXO1 in FP-RMS cells. U7D-1 increases the level of cleaved PARP in FP-RMS cells, induces cell apoptosis, and upregulates the expression of muscle differentiation markers MYH1 and MYF5. U7D-1 inhibits the growth and proliferation of p53 wild-type and mutant cancer cells, and regulates the apoptosis pathway and E2F pathway. U7D-1 is applicable to studies on neuroblastoma, fusion-positive rhabdomyosarcoma, p53-mutant cancers and cancer-related research.

Smurf1-IN-1 is an orally active and selective inhibitor of specific E3 ubiquitin protein ligase 1 (SMURF1) with an IC₅₀ of 92 nM. Smurf1-IN-1 has significant efficacy in rats model of pulmonary hypertension.

SPOP-IN-6b dihydrochloride is a potent speckle-type POZ protein (SPOP) inhibitor with an IC₅₀ of 3.58 μM.

NSC689857 is a potent EGFR and SCF^SKP2 inhibitor with an IC₅₀ value of 36 μM for Skp2-Cks1. NSC689857 can inhibit p27 ubiquitylation (IC₅₀=30 μM). NSC689857 has varied activity across cancer types, with more activity against leukemia cell lines than others.

RO-5963 is a dual p53-MDM2 and p53-MDMX inhibitor with IC₅₀s of ~17 nM and ~24 nM, respectively.

SJ-172550 is a small molecule inhibitor of MDMX; competes for the wild type p53 peptide binding to MDMX with an EC₅₀ of 5 μM.

UC-764864 is a selective UBE2N inhibitor. UC-764864 covalently binds UBE2N catalytic Cys87, blocks ubiquitin-UBE2N thioester formation and polyubiquitin chain synthesis. UC-764864 blocks ubiquitination of innate immune- and inflammatory-related substrates, and induces cell apoptosis. UC-764864 can be used for the research of acute myeloid leukemia.

BH3I-1 is a Bcl-2 family antagonist, which inhibits the binding of the Bak BH3 peptide to Bcl-xL with a K_i of 2.4±0.2 μM in FP assay. BH3I-1 has a K_d of 5.3 μM against the p53/MDM2 pair.

COH000 is an allosteric, covalent and irreversible inhibitor of ubiquitin-like 1-activating enzyme (SUMO-activating enzyme) (E1), with an IC₅₀ of 0.2 μM for SUMOylation in vitro.

RNF5 inhibitor inh-02 is a potent inhibitor of E3 ubiquitin ligase RNF5/RMA1. RNF5 inhibitor inh-02 rescues F508del-CFTR function in F508del-CFTR-expressing immortalized cells (CFBE41o⁻, EC₅₀ = 2.6 μM; FRT, EC ₅₀ = 2.2 μM). RNF5 inhibitor inh-02 increases LC3IIB expression and autophagic vacuole number via reducing ATG4B ubiquitylation and promotes cell motility. RNF5 inhibitor inh-02 can be used for the study of cystic fibrosis.

3-Amino-4,6-dimethylpyridine (5A-DMP) is a UHRF1 inhibitor that targets the Arg-binding cavity site within the UHRF1 TTD domain. 3-Amino-4,6-dimethylpyridine disrupts the interaction between UHRF1 and LIG1, interfering with DNA methylation, and can be utilized in cancer research.

SPOP-IN-1 is a selective SPOP E3 ubiquitin ligase inhibitor. SPOP-IN-1 leads to the accumulation of tumor suppressors PTEN and DUSP7 and decreased levels of phosphorylated AKT and ERK in clear-cell renal cell carcinoma.