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 Activators
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STAT3 Ligands
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STAT3 Related Products (366)
Related Products (366)
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Antibodies (5)
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Tofacitinib-d3 citrate
0 ImagesSynonyms: Tasocitinib-d3 citrate; CP-690550-d3 citrateTofacitinib-d3 citrate (Tasocitinib-d3 citrate; CP-690550-d3 citrate) is the deuterated-labeled Tofacitinib citrate (HY-40354A). Tofacitinib citrate (Tasocitinib citrate) is an orally active, blood-brain barrier permeable selective inhibitor of JAK1/JAK3. Tofacitinib citrate blocks the JAK-STAT/NF-κB signaling pathway, inhibits cytokine signal transduction, phosphorylation of STAT1/STAT5, and suppresses innate and adaptive immune responses. Tofacitinib citrate can be used in research related to major depressive disorder, rheumatoid arthritis, pulmonary diseases, systemic lupus erythematosus, and immune-mediated liver injury.
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Sorafenib-13C,d3
0 ImagesSynonyms: Bay 43-9006-13C,d3Sorafenib-13C,d3 (Bay 43-9006-13C,d3) is the 13C, 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.
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1-Stearoyl-sn-glycero-3-phosphocholine-d35
0 ImagesSynonyms: 18:0 Lyso-PC-d35; LPC(18:0)-d351-Stearoyl-sn-glycero-3-phosphocholine-d35 is deuterium labeled 1-Stearoyl-sn-glycero-3-phosphocholine (HY-125771). 1-Stearoyl-sn-glycero-3-phosphocholine is a lysophosphatidylcholine that inhibits HDAC3 activity and phosphorylation of STAT3 in K562 cells. 1-Stearoyl-sn-glycero-3-phosphocholine induces apoptosis and exhibits anticancer activity in chronic myelogenous leukemia (CML) K562 cells.
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Bellidifolin
0 ImagesBellidifolin is an orally active compound with antiproliferative, anti-inflammatory and antioxidant properties. Bellidifolin modulates key signaling pathways including STAT3, PI3K-Akt, mTOR and BRD4, and inhibits the viral protein R (Vpr). Bellidifolin induces cell cycle arrest and apoptosis, exerts significant antifibrotic effects, and protects the heart, liver and nervous system. Bellidifolin is applicable to the research of various diseases such as lung cancer, non-alcoholic fatty liver disease, myocardial hypertrophy and ischemic cranial nerve injury.
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ENMD-1198
0 ImagesSynonyms: IRC-110160ENMD-1198 (IRC-110160), an orally active microtubule destabilizing agent, is a 2-methoxyestradiol analogue with antiproliferative and antiangiogenic activity. ENMD-1198 is suitable for inhibiting HIF-1alpha and STAT3 in human HCC cells and leads to reduced tumor growth and vascularization.
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UC-514321
0 ImagesUC-514321, a structural analog of NSC370284 with higher activity, directly targets STAT3/5 and represses TET1 expression, but not TET2 or TET3. UC-514321 has the potential to treat acute myeloid leukemia (AML) both in vitro and in vivo, with low toxicity.
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Momordicine I
0 ImagesCat. No.: HY-122949CAS No.: 91590-76-0Momordicine I is a cucurbitane-type triterpenoids. Momordicine I suppresses glioma growth by promoting apoptosis and impairing mitochondrial oxidative phosphorylation. Momordicine I inhibits glycolysis, lipid metabolism, induces autophagy in HNC cells to suppress head and neck cancer growth. Momordicine I alleviates isoproterenol-induced cardiomyocyte hypertrophy through suppression of PLA2G6 and DGK-ζ. Momordicine I exerts its cardiovascular benefits by upregulating nitric oxide, inhibiting the activity of angiotensin-converting enzyme (ACE), activating the PI3K/Akt pathway, reducing oxidative stress and inflammation. Momordicine I inhibits AKT1, IL-6, and SRC, suggesting its potential application in type 2 diabetes.
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Tofacitinib citrate (Standard)
0 ImagesSynonyms: Tasocitinib citrate (Standard); CP-690550 citrate (Standard)Tofacitinib citrate (Standard) (Tasocitinib citrate (Standard); CP-690550 citrate (Standard)) is the analytical standard of Tofacitinib citrate (HY-40354A). This product is intended for research and analytical applications. Tofacitinib citrate (Tasocitinib citrate) is an orally active, blood-brain barrier permeable selective inhibitor of JAK1/JAK3. Tofacitinib citrate blocks the JAK-STAT/NF-κB signaling pathway, inhibits cytokine signal transduction, phosphorylation of STAT1/STAT5, and suppresses innate and adaptive immune responses. Tofacitinib citrate can be used in research related to major depressive disorder, rheumatoid arthritis, pulmonary diseases, systemic lupus erythematosus, and immune-mediated liver injury.
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Phellodendrine
0 ImagesPhellodendrine is an orally active plant alkaloid. Phellodendrine inhibits the proliferation of KRAS-mutated pancreatic cancer cells by suppressing macropinocytosis and glutamine metabolism, inducing ROS accumulation and mitochondrial apoptosis. Phellodendrine promotes autophagy by activating the AMPK/mTOR pathway, alleviating intestinal damage in ulcerative colitis. Phellodendrine can alleviate gouty arthritis by inhibiting the IL-6/STAT3 signaling pathway. Phellodendrine suppresses allergic reactions by altering the conformation of MRGPRB3/MRGPRX2 protein, thereby inhibiting the activation of PKC and subsequent downstream MAPK and NF-κB signaling. Phellodendrine inhibits the AKT/NF-κB pathway and down-regulates the expression of COX-2, thereby protecting zebrafish embryos from oxidative stress. Phellodendrine has an anti-major depressive disorder (MDD) effect by down-regulating CHRM1, HTR1A, and the PI3K/Akt signaling pathway.
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Galiellalactone
0 ImagesCat. No.: HY-125170CAS No.: 133613-71-5Galiellalactone is a is a small non-toxic and non-mutagenic fungal metabolite, a selective inhibitor of STAT3 signaling, with an IC50 of 250-500 nM. Galiellalactone can be used to research castration-resistant prostate cancer.
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Cyclanoline chloride
0 ImagesCat. No.: HY-120692CAS No.: 17472-50-3Cyclanoline chloride is an alkaloid. Cyclanoline chloride can be isolated from Fangji. Cyclanoline (chloride) inhibits the phosphorylation of JAK2 and STAT3, and induces Apoptosis. Cyclanoline chloride suppresses tumor growth in subcutaneous bladder cancer xenograft models of nude mice. Cyclanoline chloride reverses cisplatin resistance in bladder cancer cells and enhances the efficacy of Cisplatin (HY-17394). Cyclanoline chloride can be used for research related to bladder cancer.
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15(R)-Lipoxin A4
0 ImagesSynonyms: 15-epi-LXA415 (R)-Lipoxin A4 (15-epi-LXA4) is a specialized pro-resolving mediator and an acetylated derivative of COX2. 15 (R)-Lipoxin A4 is present in neurons. 15 (R)-Lipoxin A4 induces the SPM synthases ALOX12 and ALOX15, as well as the pro-resolving receptor ALX. 15 (R)-Lipoxin A4 inhibits protein kinases, including JNK1/2/3, Lyn, STAT-3 and STAT-6. 15 (R)-Lipoxin A4 enhances the release of pro-resolving mediators. 15 (R)-Lipoxin A4 alleviates the pro-inflammatory phenotype of tendon-derived stromal cells. 15 (R)-Lipoxin A4 promotes the resolution of neuroinflammation. 15 (R)-Lipoxin A4 is applicable to research related to achilles tendinitis, achilles tendon rupture and Alzheimer’s disease.
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Globulol
0 ImagesGlobulol is a terpenoid metabolite and Antimicrobial agent. Globulol can be isolated from Alpinia oxyphylla Miq. Globulol binds to PAK4, reduces the expression level of PAK4 in cancer cells, decreases the phosphorylation of AKT, and downregulates the expressions of STAT3, phosphorylated STAT3, and PD-L1. Globulol promotes the secretion of CCL4 by cancer cells. Globulol reduces the viability and proliferation ability of cancer cells, induces G0/G1 cell cycle arrest and Apoptosis in cancer cells, and inhibits cancer cell migration and the integrity of 3D tumor spheres. Globulol enhances the relevant effects of anti-PD-1 agents in the cancer cell microenvironment. Globulol exhibits anticancer activity against liver cancer. Globulol inhibits the mycelial growth of phytopathogenic fungi and the growth of phytopathogenic bacteria. Globulol can be used in studies related to hepatocellular carcinoma.
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KT-333 ammonium
0 ImagesKT-333 ammonium (Compound A) is a molecular glues that degrades STAT3 protein. KT-333 ammonium mediates the selective degradation of STAT3 through the ubiquitin-proteasome system by binding to STAT3 protein and E3 ubiquitin ligase von Hippel-Lindau protein (VHL). KT-333 ammonium has strong selectivity for STAT3 protein degradation and good antitumor activity. KT-333 ammonium can be used in the study of hematologic malignancies such as large granular lymphocytic leukemia (LGL-L), peripheral T-cell lymphoma (PTCL), and cutaneous T-cell lymphoma (CTCL).
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Mocravimod
0 ImagesSynonyms: KRP-203 free baseMocravimod (KRP-203 free base) is a sphingosine-1-phosphate receptor (S1PR) modulator that blocks the signal required by T cells to egress from lymph nodes and other lymphoid organs. Mocravimod preferentially binds to S1PR1 over S1PR2 and S1PR3 in cardiomyocytes. Mocravimod significantly lowered the concentration of reactive oxygen species (ROS), prevented mitochondrial permeability transition pore opening, boosted mitochondrial membrane potential (MMP), and increased phosphorylation of AKT, EKR, GSK-3β, JAK2, and STAT3. Mocravimod retains T cell effector function. Mocravimod can be used for the study of acute myelogenous leukemia, diabetes and Myocardial Ischemia-Reperfusion Injury (MIRI).
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DCZ3301
0 ImagesDCZ3301 is an apoptosis inducer. DCZ3301 modulates JAK2/STAT3, ERK1/2, and PI3K/AKT pathways. DCZ3301 induces G2/M and M phase cell cycle arrest and inhibits cell proliferation and viability. DCZ3301 enhances DNA damage, inhibits DNA repair, and suppresses angiogenesis. DCZ3301 can be used for the research of diffuse large B-cell lymphoma, multiple myeloma and leukemia/lymphoma.
