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 Antagonist
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STAT3 Activators
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STAT3 Ligands
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STAT3 Related Products (319)
Related Products (319)
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Antibodies (5)
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HAT-SIL-TG-1&AT
0 ImagesCat. No.: HY-149257CAS No.: 2973282-50-5HAT-SIL-TG-1&AT is a Janus tyrosine kinase (JAK) inhibitor with antitumor effects. HAT-SIL-TG-1&AT is the hypoxia-activated prodrug, witch inhibits JAK-STAT signaling in tumor tissue. And HAT-SIL-TG-1&AT inhibits HEL cells proliferation and downregulated phosphorylated STAT3/5 under hypoxic conditions.
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MLS-2384 free base
0 ImagesCat. No.: HY-125718CAS No.: 1067884-45-0MLS-2384 free base is a dual JAK/Src kinase inhibitor. MLS-2384 free base downregulates STAT3 downstream proteins c-Myc and Mcl-1. MLS-2384 free base induces Apoptosis. MLS-2384 free base exhibits anticancer activity against prostate cancer, breast cancer, skin cancer, ovarian cancer, lung cancer, and liver cancer.
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STA-1474
0 ImagesCat. No.: HY-13752CAS No.: 1118915-78-8STA-1474 is an orally active and highly selective HSP90 inhibitor, as well as a phosphate prodrug of the HSP90 inhibitor STA-9090 (HY-15205). STA-1474 disrupts the chaperone function of HSP90 and promotes the degradation of client proteins. STA-1474 inhibits the phosphorylation of Met, Akt and STAT3, thereby blocking related signaling pathways. STA-1474 induces apoptosis and inhibits proliferation of osteosarcoma cells, and triggers the up-regulation of HSP70 and HSP90. STA-1474 induces tumor regression and caspase-3 activation in mouse osteosarcoma xenograft models. STA-1474 can be used in the research of osteosarcoma.
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STAT3/NF-κB-IN-1
0 ImagesCat. No.: HY-175227STAT3/NF-κB-IN-1 is a potentSTAT3 and NF-κB inhibitor with IC50s of 5.86 (STAT3) and 4.22 μM (NF-κB) in 4T1 cells. STAT3/NF-κB-IN-1 is able to induce apoptosis via its upregulation on key apoptotic regulators; caspases-3/9, Bax and downregulation of Bcl-2. STAT3/NF-κB-IN-1 exerts considerable anticancer activity against breast cancer cell lines and reduces tumor volume in vivo. STAT3/NF-κB-IN-1 can be used for the study of breast cancer.
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Apoptosis inducer 55
0 ImagesCat. No.: HY-180226Apoptosis inducer 55 (Compound 10) is an Apoptosis inducer. Apoptosis inducer 55 induces rapid apoptosis via the intrinsic pathway. Apoptosis inducer 55 potently inhibits several signaling cascades including AKT, ERK1/2, STAT1, STAT3, and S6K. Apoptosis inducer 55 has anti-cancer activity against melanoma.
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STAT3-IN-47
0 ImagesCat. No.: HY-178140CAS No.: 2787548-58-5STAT3-IN-47 is an orally active STAT3 inhibitor. STAT3-IN-47 exhibits broad-spectrum anti-tumor activity against HeLa, HepG2, U87, and LN229 cells. STAT3-IN-47 suppresses STAT3 activation in vitro. STAT3-IN-47 can be used for the study of solid tumors, especially central nervous system (CNS) malignancies and hepatocellular carcinoma.
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SD-965
0 ImagesCat. No.: HY-182922CAS No.: 3054394-56-5
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SH-17
0 ImagesCat. No.: HY-187212SH-17 is a STAT3 and HDAC inhibitor, with a Kd of 0.87 μM for STAT3, and IC50 values of 115.2 nM and 9.8 nM for HDAC1 and HDAC6, respectively. SH-17 blocks intracellular ATP production and mitochondrial oxidative phosphorylation, induces cell cycle arrest at the G0/G1 phase, and triggers apoptosis. SH-17 is applicable to colon cancer research.
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7-epi-Isogarcinol
0 ImagesCat. No.: HY-N11501CAS No.: 1141378-40-6
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Lss-11
0 ImagesCat. No.: HY-183143CAS No.: 1392014-36-6Lss-11 is a topoisomerase inhibitor. LSS-11 enhances cell death in cancer cells by inducing apoptosis through increasing the DR5 protein level and PARP1 cleavage. LSS-11 dose-dependently reduces STAT3 phosphorylation, downregulates its target genes MDR1 and MRP1, reduces P-gp protein expressionwithout affecting P-gp transport function. Lss-11 is a chemosensitizer and shows synergistic anticancer effect with Paclitaxel (HY-B0015). Lss-11 can be used for the research of paclitaxel-resistant lung cancer.
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STAT3-IN-52 hydrochloride
0 ImagesCat. No.: HY-177990ASTAT3-IN-52 hydrochloride is an orally active STAT3 inhibitor with a Ki value of 2.42 μM. STAT3-IN-52 hydrochloride binds directly and selectively to the pY705 site of STAT3 (Ki = 0.44 μM), thereby impairing its function. STAT3-IN-52 hydrochloride induces apoptosis and triggers anti-tumor responses in vivo. STAT3-IN-52 hydrochloride can be used in breast cancer-related research.
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AH-26
0 ImagesCat. No.: HY-184731CAS No.: 3083249-46-8AH-26 is a STAT3 inhibitor. AH-26 stabilizes the STAT3 protein, inhibits STAT3 phosphorylation, induces mitochondria-mediated apoptosis, triggers differentiation of leukemia cells, suppresses cancer cell migration, and arrests the cell cycle at the G1 phase. AH-26 exhibits antitumor activity without toxicity in nude mice. AH-26 can be used in the research of leukemia, ovarian cancer, gastric cancer, and pancreatic cancer.
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STAT3-IN-44
0 ImagesCat. No.: HY-175010STAT3-IN-44 is a potent STAT3 inhibitor with IC50s of 1.84 (C6 cells) and 4.81 μM (A549 cells). STAT3-IN-44 inhibits STAT3 phosphorylation, downregulates Bcl-2, and upregulates Caspase-3 to promote late-stage apoptosis. STAT3-IN-44 significantly suppresses tumor cell proliferation and migration. STAT3-IN-44 can be used for the study of cancers such as glioma and lung cancer.
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Cernuumolide J
0 ImagesCat. No.: HY-N13294CAS No.: 2019163-02-9Synonyms: TMJ-105Cernuumolide J (TMJ-105) is an JAK2/STAT3 inhibitor. Cernuumolide J induces G2/M phase arrest and apoptosis in HEL leukemia cells by downregulating the phosphorylation of JAK2, STAT3, and Erk, and activating the phosphorylation of JNK and p38 MAPK. Cernuumolide J inhibits HEL leukemia cell growth in a time- and concentration-dependent manner, with an IC50 value of 1.79 μM. Cernuumolide J can be used for research in the field of anti-cancer therapy.
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Atractylenolide II (Standard)
0 ImagesCat. No.: HY-N0202RCAS No.: 73069-14-4Synonyms: Asterolide (Standard)Atractylenolide II (Standard) is the analytical standard of Atractylenolide II. This product is intended for research and analytical applications. Atractylenolide II (Asterolide) is a sesquiterpenoid compound. Atractylenolide II can induce G1 phase cell cycle arrest and apoptosis in B16 melanoma cells. Atractylenolide II is an orally effective anticancer agent that can exert anti-melanoma effects by inhibiting the STAT3 signaling pathway. In addition, Atractylenolide II has been shown to ameliorate myocardial fibrosis, oxidative stress, and neuroprotective activity.
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PROTAC ALK degrader-5
0 ImagesCat. No.: HY-180956CAS No.: 2379672-57-6PROTAC ALK degrader-5 (Compound 17) is an efficient ALK PROTAC degrader, with its inhibitory effects on EML4-ALK and NPM-ALK being 27.4 nM and 116.5 nM respectively. PROTAC ALK degrader-5 exhibits potent anti-proliferative activity against H3122 and Karpas 299. PROTAC ALK degrader-5 effectively inhibits the phosphorylation of ALK and STAT3. PROTAC ALK degrader-5 can be used for the study of ALK-driven malignant tumors, such as human non-small cell lung cancer and anaplastic large cell lymphoma.
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Glucocorticoid receptor/IL-6-IN-1
0 ImagesCat. No.: HY-176876CAS No.: 1198784-71-2Glucocorticoid receptor/IL-6-IN-1 (Compound 35) is a selective dual inhibitor targeting the glucocorticoid receptor (GR) and IL-6 signaling pathway (IC50 values of 120 nM and 59 nM, respectively). Glucocorticoid receptor/IL-6-IN-1 inhibits IL-6-induced JAK/STAT3 phosphorylation, blocking inflammatory cytokine transcription. Glucocorticoid receptor/IL-6-IN-1 is promising for research of inflammatory diseases like rheumatoid arthritis and asthma.
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W1307
0 ImagesCat. No.: HY-184891CAS No.: 3028770-95-5W1307 is a selective STAT3 inhibitor with a KD value of 1.74 μM. W1307 inhibits STAT3 Tyr705 phosphorylation, disrupts STAT3 dimerization, and suppresses STAT3 transcriptional activity. W1307 downregulates the expression of STAT3 downstream targets c-Myc, Mcl-1 and Bcl-2. W1307 transcriptionally inhibits SREBP1 and CPT2 expression to disrupt lipid homeostasis. W1307 shows potent anti-leukemic activity and synergizes with Cytarabine (Ara-C) (HY-13605) to overcome chemoresistance in acute myeloid leukemia (AML).
