STAT3
STAT3 is a widely expressed STAT family transcription factor that regulates cellular growth, differentiation, survival, immunity, hematopoiesis, and cell migration[1]. Mechanistically, cytokines and growth factors activate JAKs, phosphorylate STAT proteins, promote STAT dimerization, and drive nuclear transcriptional regulation[2]. In inflammatory disease models, STAT3 shows strong tyrosine phosphorylation in human ulcerative colitis, Crohn’s disease, and DSS-induced mouse colitis, where IL-6 deficiency reduces colitis and STAT3 activation[3]. In cancer models, persistent STAT3 activation supports proliferation, survival, invasion, metastasis, immune evasion, and drug resistance, making STAT3 signaling a practical axis for tumor biology research[1][4]. Compared with related isoforms, STAT1 knockout mice mainly show impaired interferon signaling, while STAT3 is emphasized in IL-6-linked inflammation, tumor progression, and Th17-related immune dysfunction[2][5]. For experimental applications, JAK/STAT inhibitors such as AG490 and AZD1480 reduce STAT1/STAT3 activation in renal ischemia-reperfusion and α-synuclein neuroinflammation models[6][7].
References:
- [1]. Liu Y, et al. STAT3 and its targeting inhibitors in osteosarcoma. Cell Prolif. 2021 Feb;54(2):e12974. [Content Brief]
- [2]. Heim MH. The Jak-STAT pathway: cytokine signalling from the receptor to the nucleus. J Recept Signal Transduct Res. 1999 Jan-Jul;19(1-4):75-120. doi: 10.3109/10799899909036638. PMID: 10071751. et al. The Jak-STAT pathway: cytokine signalling from the receptor to the nucleus. J Recept Signal Transduct Res. 1999 Jan-Jul;19(1-4):75-120. [Content Brief]
- [3]. Suzuki A, et al. CIS3/SOCS3/SSI3 plays a negative regulatory role in STAT3 activation and intestinal inflammation. J Exp Med. 2001 Feb 19;193(4):471-81. [Content Brief]
- [4]. Wu CJ, et al. Activation of STAT3 and STAT5 Signaling in Epithelial Ovarian Cancer Progression: Mechanism and Therapeutic Opportunity. Cancers (Basel). 2019 Dec 19;12(1):24. [Content Brief]
- [5]. Tolomeo M, et al. The STAT Signaling Pathway in HIV-1 Infection: Roles and Dysregulation. Int J Mol Sci. 2025 Sep 18;26(18):9123. [Content Brief]
- [6]. Si Y, et al. Dexmedetomidine protects against renal ischemia and reperfusion injury by inhibiting the JAK/STAT signaling activation. J Transl Med. 2013 Jun 9;11:141. [Content Brief]
- [7]. Qin H, et al. Inhibition of the JAK/STAT Pathway Protects Against α-Synuclein-Induced Neuroinflammation and Dopaminergic Neurodegeneration. J Neurosci. 2016 May 4;36(18):5144-59. [Content Brief]
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STAT3 Inhibitors
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STAT3 Agonist
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STAT3 Antagonists
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STAT3 Activators
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STAT3 Modulators
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STAT3 Inducer
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STAT3 Degraders
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STAT3 Ligands
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STAT3 Related Products (364)
Related Products (364)
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Antibodies (5)
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STAT3-IN-37
0 ImagesCat. No.: HY-169908CAS No.: 3055844-98-6STAT3-IN-37 (Compound 101) is the inhibitor for STAT3 with an IC50 of 15 nM (measuring by DNA-HTRF assay) or 2 nM (measuring by human whole blood SOCS3 qPCR assay).
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OSM-SMI-8
0 ImagesCat. No.: HY-148693CAS No.: 1689690-20-7Synonyms: NSC642624
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Pimozide-d4
0 ImagesSynonyms: R6238-d4Pimozide-d4 is a deuterium labeled Pimozide. Pimozide is a dopamine receptor antagonist, with Kis of 1.4 nM, 2.5 nM and 588 nM for dopamine D2, D3 and D1 receptors, respectively, and also has affinity at α1-adrenoceptor, with a Ki of 39 nM; Pimozide also inhibits STAT3 and STAT5.
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Isocryptotanshinone
0 ImagesIsocryptotanshinone is a dual STAT3 and PTP1B (IC50 = 56.1 μM) inhibitor. Isocryptotanshinone inhibits STAT3 by binding to the STAT3 SH2 domain to block phosphorylation and nuclear translocation[1][2]. Isocryptotanshinone exerts its anti-proliferative effect via the induction of cell cycle arrest, apoptosis, and pro-death autophagy, through the regulation of STAT3, AKT/mTOR and MAPK signaling pathways. Isocryptotanshinone suppresses the xenograft gastric cancer (GC) tumor growth in BALB/c nude mice. Isocryptotanshinone can be used for cancer research, such as lung cancer, breast cancer and GC.
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INCA033989
0 ImagesCat. No.: HY-P991888Purity: 98.12%INCA033989 is a fully human IgG1 monoclonal antibody targeting mutCALR (KD = 1.75 nM for mutCALRdel52; KD = 6.78 nM for mutCALRins5). INCA033989 antagonizes mutCALR-driven signaling and proliferation. INCA033989 selectively inhibits pSTAT3/pSTAT5. INCA033989 prevents thrombocytosis and reduces the expansion of mutCALR-positive cells. INCA033989 is useful for research on myeloproliferative neoplasms .
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Guanosine 5'-diphosphate
0 ImagesGuanosine 5'-diphosphate (GDP) is a nucleoside diphosphate that activates adenosine 5'-triphosphate-sensitive K+ channel. Guanosine 5'-diphosphate is an iron mobilizer, which forms a complex with hepcidin to inhibit the hepcidin-ferroportin (FPN) interaction and modulates the IL-6/stat-3 pathway. Guanosine 5'-diphosphate ameliorates the Turpentine-induced anemia of inflammation (AI) in mice when combined with FeSO4. Guanosine 5'-diphosphate can be used in the research of AI.
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HJC0123
0 ImagesHJC0123 is a STAT3 inhibitor. HJC0123 inhibits the proliferation of hepatic stellate cells and induces cell cycle arrest and apoptosis. HJC0123 reduces the phosphorylation, nuclear translocation and transcriptional activities of STAT3, increases the production of IL-6, inhibits the phosphorylation of Smad2/3 and down-regulates SOCS3. HJC0123 can be used in the study of liver fibrosis.
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Golotimod
0 ImagesSynonyms: SCV 07; Gamma-D-glutamyl-L-tryptophanGolotimod (SCV-07), an immunomodulating peptide with antimicrobial activity, significantly increases the efficacy of antituberculosis therapy, stimulates thymic and splenic cell proliferation, and improves macrophage function. Golotimod (SCV-07) inhibits STAT3 signaling and modulates the duration and severity of oral mucositis in animal models that received radiation or a combination of radiation and Cisplatin. Golotimod (SCV-07) is also a potential therapeutic for recurrent genital herpes simplex virus type 2 (HSV-2).
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ROCK2-IN-12
0 ImagesROCK2-IN-12 (Compound A25) is a selective ROCK2 inhibitor with an IC50 of 7.0 nM for ROCK2 over ROCK1. ROCK2-IN-12 has potent antifibrotic effects via the TGF-β/Smad and ROCK2/STAT3 signaling pathways. ROCK2-IN-12 significantly reduces collagen deposition and reverses fibrotic progression in Bleomycin (HY-108345)-induced pulmonary fibrosis (PF) mouse models. ROCK2-IN-12 can be used for lung diseases like pulmonary fibrosis research.
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STAT3-D11-PROTAC-VHL
0 ImagesCat. No.: HY-172767STAT3-D11-PROTAC-VHL (Compound D11-PROTAC) is a PROTAC degrader targeting Signal Transducer and Activator of Transcription 3 (STAT3). STAT3-D11-PROTAC-VHL exhibits anti-tumor activity with IC50 values of 1335 nM and 1973 nM against HeLa and MCF-7 cells, respectively. STAT3-D11-PROTAC-VHL binds to the DNA-binding domain of STAT3 and recruits the E3 ligase VHL to form a ternary complex, leading to the ubiquitination of STAT3 and subsequent degradation by the proteasome. STAT3-D11-PROTAC-VHL also inhibits tumor cell growth, induces cell cycle arrest and apoptosis, and suppresses tumor immune evasion.
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Enniatin B
0 ImagesEnniatin B is a Fusarium mycotoxin that acts as an ionophore to form cation-selective membrane channels, disrupt ion homeostasis and mitochondrial function, inhibit cell proliferation, and induce apoptosis, while modulating ERK, p38 MAPK, and STAT3 signaling pathways. Enniatin B is used in research on atherosclerosis, hypercholesterolemia, cervical cancer, and colon adenocarcinoma.
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STAT3-IN-52
0 ImagesCat. No.: HY-177990CAS No.: 1556861-34-7STAT3-IN-52 is an orally active STAT3 inhibitor with a Ki value of 2.42 μM. STAT3-IN-52 binds directly and selectively to the pY705 site of STAT3 (Ki = 0.44 μM), thereby impairing its function. STAT3-IN-52 induces apoptosis and triggers anti-tumor responses in vivo. STAT3-IN-52 can be used in breast cancer-related research.
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SD-91
0 ImagesCat. No.: HY-150251CAS No.: 2497583-03-4Synonyms: STAT3 degrader-2SD-91 (STAT3 degrader-2), a product of the hydrolysis of SD-36 (HY-129602), is a selective PROTAC-based STAT3 degrader with a Ki of 5.5 nM. SD-91 displays >300-fold selectivity over other STAT family protein members. SD-91 potently induces degradation of STAT3 protein in cells. SD-91 has anticancer effects, such as myeloid leukemia, lymphoma (Pink: ligand for target protein (HY-150895); Black: linker; Blue: E3 ligase ligand; E3 ligase ligand+linker: HY-176506).
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Ac-GpYLPQTV-NH2
0 ImagesCat. No.: HY-P10201CAS No.: 1349616-70-1Ac-GpYLPQTV-NH2 is a STAT3 inhibitor with an IC50 value of 0.33 μM. Ac-GpYLPQTV-NH2 has antitumor activity.
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(E/Z)-OSM-SMI-8
0 ImagesCat. No.: HY-148693ASynonyms: (E/Z)-NSC642624(E/Z)-OSM-SMI-8 ((E/Z)-NSC642624) is the racemate of OSM-SMI-8 (HY-148693). OSM-SMI-8 is an oncostatin M (OSM) inhibitor with a pKi of 44.82 nM against human targets. OSM-SMI-8 inhibits the activation of STAT3, JNK, ERK 42/44 and AKT signaling pathways induced by OSM. OSM-SMI-8 is applicable to research related to cancer metastasis and Crohn's disease.
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Laricitrin
0 ImagesLaricitrin is a natural product with multiple biological activities. Laricitrin inhibits the phosphorylation and DNA-binding activity of STAT3, and downregulates the expression of IL-10. Laricitrin acts as an immunomodulator to regulate the differentiation, maturation and function of dendritic cells (DCs). Laricitrin inhibits the migration and invasion of lung cancer cells, and ameliorates lung cancer progression. Laricitrin can be used in research related to hypertension and lung cancer.
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Niclosamide monohydrate
0 ImagesCat. No.: HY-B0497BCAS No.: 73360-56-2Synonyms: BAY2353 monohydrateNiclosamide (BAY2353) monohydrate is an orally active antihelminthic agent used in parasitic infection research. Niclosamide monohydrate is a STAT3 inhibitor with an IC50 of 0.25 μM in HeLa cells. Niclosamide monohydrate has biological activities against cancer, and inhibits DNA replication in Vero E6 cells.
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Sorafenib-d4
0 ImagesSynonyms: Bay 43-9006-d4Sorafenib-d4 (Bay 43-9006-d4) is the deuterated-labeled Sorafenib (HY-10201). Sorafenib (Bay 43-9006) is a potent oral active multikinase inhibitor. Sorafenib blocks autophosphorylation and activity of receptor tyrosine kinases (VEGFR-2, VEGFR-3) and RAF family kinases, thereby suppressing the RAF/MEK/ERK and PI3K/Akt pathways, inhibiting STAT3 phosphorylation, and selectively inhibiting the MAPK pathway in cancer cells. Sorafenib induces cell cycle arrest, autophagy, apoptosis, and PARP cleavage, reduces Bcl-2, Bcl-XL, cyclin D1 levels, and activates Bak and Bax. Sorafenib inhibits tumor growth and metastasis in mouse and rat models. Sorafenib can be used for cancer research, such as colon, breast, non-small-cell lung cancer (NSCLC), ovarian, pancreatic, melanoma, colorectal and hepatocellular carcinoma.
