STAT Inhibitor

STAT3-IN-53 (Compound L20) is a STAT3 inhibitor with a K_d value of 6.16 μM. STAT3-IN-53 binds directly to the SH2 domain of STAT3, inhibits phosphorylation at the Y705 site without affecting the total STAT3 protein level, and suppresses the IL-6/JAK/STAT3 pathway. STAT3-IN-53 downregulates the transcription and expression of cyclin-D1 and c-Myc. STAT3-IN-53 induces cell cycle arrest and promotes Apoptosis. STAT3-IN-53 exhibits anticancer activity against colorectal cancer.

KSI-028 is a STING inhibitor. KSI-028 disrupts STING-mediated signal transduction, reduces IFN-β and pro-inflammatory cytokine (IL-6, IL-1β and TNF-α) production. KSI-028 inhibits the phosphorylation of STING, TBK1, IRF3, and STAT1. KSI-028 attenuates renal and hepatic injury in a Cisplatin (HY-17394)-induced acute kidney injury mouse model.

STAT3-IN-51 is a STAT3 inhibitor that directly binds to the STAT3 SH2 domain. STAT3-IN-51 induces apoptosis, ferroptosis, and immunogenic cell death (ICD) to potentiate anti-tumor immunity. STAT3-IN-51 inhibits STAT3 activation (phosphorylation, p-STAT3) and its downstream signaling. STAT3-IN-51 induces ROS generation, decreases Bcl-2 expression, disruptes mitochondrial function, suppresses GPX4 activity, and promotes lipid peroxidation. STAT3-IN-51 can be used for the study of colorectal carcinoma, breast adenocarcinoma, non-small cell lung cancer (NSCLC) and Cisplatin (HY-17394)-resistant pulmonary adenocarcinoma.

EGFR/STAT3-IN-2 is an inhibitor of EGFR tyrosine kinase and STAT3 signaling. EGFR/STAT3-IN-2 induces Apoptosis and G0/G1 cell cycle arrest. EGFR/STAT3-IN-2 exhibits selective anticancer activity against lung adenocarcinoma. EGFR/STAT3-IN-2 can be used for research on non-small cell lung cancer.

STAT3/HDAC-IN-2 (compound 18) is a dual inhibitor of STAT3 and HDAC, inducing autophagy and apoptosis. STAT3/HDAC-IN-2 is an amphiphilic hydroxamic acid hybrid based on the natural product isopropanol lactone (IAL) and is a nanoscale anticancer agent. STAT3/HDAC-IN-2 can self-assemble in water to form nanoparticles, which have higher tumor tissue accumulation, cellular uptake and anticancer properties compared to the free state.

Ascochlorin (Ilicicolin D), an isoprenoid antibiotic, mediates its anti-tumor effects predominantly through the suppression of STAT3 signaling cascade. Ascochlorin induces apoptosis. Anti-inflammatory activity.

Paeoniflorin-6′-O-benzene sulfonate (CP-25) is the inhibitor for G protein-coupled receptor kinase 2 (GRK2) that inhibits the translocation of GRK2 to the cell membrane, inhibits JAK1/STAT3 signaling pathway. Paeoniflorin-6′-O-benzene sulfonate inhibits IL-17A/CXCL2-induced proliferation of HaCaT. Paeoniflorin-6′-O-benzene sulfonate reduces the levels of inflammatory factors and chemokines such as IL-17A, IL-17F, IFN-γ, TNF-α, IL-22, IL-23, CXCL2, CXCL3 and CXCL9, alleviates Imiquimod (HY-B0180)-induced psoriasis in mouse model.

NSC 850745 is a selective and potent c-Met/STAT3 inhibitor with IC₅₀ values of 210 and 670 nM. NSC 850745 can inhibit cell proliferation, induce G2/M phase arrest and induce apoptosis. NSC 850745 can downregulate AKT-1, VEGF and Bcl-2 expression and upregulate p53, Bax and caspase expression. NSC 850745 can be used for the research of cancer, such as leukemia and colon cancer.

β-Funaltrexamine (β-FNA) is a blood-brain barrier-permeable, selective and irreversible μ-opioid receptor antagonist with immunomodulatory, anti-inflammatory and neuroprotective activities. β-Funaltrexamine inhibits p38 MAPK and TLR4 signaling by blocking μ-opioid receptors, and reduces the transcriptional activities of NF-κB, AP-1, CREB and Stat. Furthermore, β-Funaltrexamine inhibits iNOS activation and pro-inflammatory microglial polarization, converting microglia to an anti-inflammatory phenotype, thereby downregulating neuroinflammation and ameliorating neuronal degeneration. β-Funaltrexamine is widely applicable to research related to stroke, cerebral ischemia/reperfusion injury and neurodegenerative diseases.

Tyk2-IN-22-d3 (Compound 1) is the deuterated analog of Tyk2-IN-22 (HY-168339). Tyk2-IN-22 (Compound A8) is a selective inhibitor for tyrosine kinase 2 (Tyk2), that it inhibits Tyk2, JAK1, and JAK3 with IC₅₀s of 9.7, 148.6, and 883.3 nM, respectively. Tyk2-IN-22 inhibits the downstream STAT5 phosphorylation.

15-Keto-prostaglandin E2-d₉ is the d₉ labeled 15-keto-Prostaglandin E2 (HY-113205). 15-keto-Prostaglandin E2 (15-keto-PGE2) is an endogenous PGE₂ metabolite. 15-keto-Prostaglandin E2 inhibits STAT3 activation by binding to the Cys259 residue of STAT3. 15-keto-Prostaglandin E2 binds to and stabilizes EP2 and EP4 receptors. 15-keto-Prostaglandin E2 inhibits the growth and progression of breast cancer cells. 15-keto-Prostaglandin E2 activates PPAR-γ and promotes fungal growth. 15-keto-Prostaglandin E2 disrupts glomerular vascularization during zebrafish development and reduces the surface area of the glomerular filtration barrier.

JAK2-IN-21 is a Janus kinase 2 (JAK2) inhibitor with an IC₅₀ of 12.25 nM. JAK2-IN-21 inhibits the JAK2/STAT3/STAT5 tumor-promoting signaling pathway and reduces JAK2 protein expression. JAK2-IN-21 exhibits selective cytotoxicity against HPV-positive cancer cells and induces cancer cell apoptosis. JAK2-IN-21 can be used in the research of HPV-positive cervical cancer.

STAT3/NF-κB-IN-2 is a dual STAT3/NF-κB inhibitor that exhibits antiproliferative, antimigratory and anti-invasive activities in cancer cells. STAT3/NF-κB-IN-2 inhibits the transcriptional activities of NF-κB and STAT3, binds to the STAT3-SH2 domain, and blocks STAT3 dimerization. STAT3/NF-κB-IN-2 can be used in studies related to triple-negative breast cancer.

PI3K/Akt/mTOR-IN-7 is an AKT/mTOR and JAK2/STAT3 inhibitor. PI3K/Akt/mTOR-IN-7 restores p-Akt, p-mTOR, and p-STAT3 expression, reduces pro-apoptotic Caspase-3 mRNA expression. PI3K/Akt/mTOR-IN-7 reduces intracellular ROS accumulation and inhibits NO production. PI3K/Akt/mTOR-IN-7 can be used for research on stroke, Alzheimer's disease and Parkinson's disease.

CHI3L1-IN-7 is a selective CHI3L1 inhibitor with a K_d of 7.40 μM and an IC₅₀ of 15.4 μM. CHI3L1-IN-7 blocks CHI3L1's interaction with galectin-3, inhibits STAT3 phosphorylation, reduces the viability of multicellular 3D glioblastoma spheroids. CHI3L1-IN-7 can be used for the research of glioblastoma and CHI3L1-mediated tumor immune regulation.

PROTAC c-Met degrader-5 is an orally active c-Met PROTAC degrader. PROTAC c-Met degrader-5 induces c-Met degradation via Cullin-CRBN, with a DC₅₀ value of 0.32 nM, and inhibits the phosphorylation of c-Met and its downstream signaling molecule STAT3. PROTAC c-Met degrader-5 inhibits cancer cell proliferation, migration and invasion, induces apoptosis, alters cell cycle distribution, and suppresses the growth of EBC-1 xenograft tumors. PROTAC c-Met degrader-5 can be used to study MET-driven cancers as well as Tepotinib (HY-14721)-resistant cancers harboring c-Met^D1228N and c-Met^Y1230H mutations.

Radotinib-d₆ is deuterium labeled Radotinib (HY-15728). Radotinib (IY-5511) is an orally active and BBB-permeable selective tyrosine kinase Bcr-Abl1 inhibitor with an IC₅₀ of 34 nM. Radotinib has anti-prion and anti-tumor activities. Radotinib can inhibit the proliferation, induce cell cycle arrest and apoptosis of tumor cells . Radotinib can be used in the research of cancer such as chronic myeloid leukemia and multiple myeloma, as well as neurodegenerative diseases such as prion diseases.

STAT3-IN-18 (compound SPP) is a platinum (IV) complex with an axial ligand derived from sandalwood. STAT3-IN-18 inhibits the JAK2-STAT3 pathway in breast cancer (BC) cells, with anti-proliferative activity. STAT3-IN-18 activates caspase-3 and increases cleaved polyADP-ribose polymerase to induce apoptosis. STAT3-IN-18 promotes maturation and antigen presentation of dendritic cells and demonstrates safety in vivo.

PD-L1-IN-6 (Compound 16) is an orally active inhibitor for PD-L1 expression in neutrophil by targeting STAT3 with K_D of 90.5 nmol/L. PD-L1-IN-6 promotes neutrophil-mediated antifungal immunoresponse.

STAT3-IN-4 (compound B9) is a STAT3 inhibitor with K_d values for STAT3 (I634S/Q635G) and WT are 22.75 and 4.59 μM, respectively. STAT3-IN-4 can inhibit the proliferation of tumor cells.