stat5 inhibitor

STAT5-IN-1 (STAT5 Inhibitor) is a cell-permeable inhibitor which suppresses Stat5 via binding to the SH2 domain.

Fedratinib (TG-101348) (TG101348) is an ATP-competitive inhibitor of JAK2 (IC50: 3 nM) with significantly less potent activity against JAK3.

Abrocitinib (PF-04965842) (PF-04965842) is a potent, specific and orally-active JAK1 inhibitor (IC50s: 29 803 nM for JAK1 2).

JAK3i is a selective covalent inhibitor of JAK3 kinase. JAK3i reveals two distinct temporal waves of STAT5 phosphorylation and more potently targets the second wave, which is required for cell cycle progression and T cell proliferation.

Nifuroxazide (Diarlidan) is an orally available and cell-permeable nitrofuran-based antidiarrheal agent. It has the inhibitory effect against the activation of cellular STAT1 3 5 transcription.

HODHBt is a STAT5-SUMO protein-protein interaction inhibitor.

Cenisertib is A potent ATP-competitive multi-kinase inhibitor, showing inhibitory effects on the activity of Aurora-kinase-A B, ABL1, AKT, STAT5, FLT3, as well as kinase inhibitors of FER and its homolog. Cenisertib inhibits the growth of tumor mast cells (MCS) by inhibiting the activity of several different molecular targets. Cenisertib also inhibits tumor growth in pancreatic, breast, colon, ovarian and lung cancer and leukemia in xenograft models.

WP1066 is a inhibitor of JAK2 (IC50: 2.30 μM) and STAT3 (IC50: 2.43 μM) in HEL cells; shows activity to JAK2, STAT3 5, and ERK1 2, not JAK1 and JAK3. WP1066 has been used in trials studying the treatment of Melanoma, Brain Cancer, Solid Tumors, and Central Nervous System Neoplasms.

Cryptotanshinone (Cryptotanshinon), a STAT3 inhibitor (IC50: 4.6 μM) in a cell-free assay, strongly inhibits phosphorylation of STAT3 Tyr705, with a little effect on STAT3 Ser727, but no inhibition for STAT1 nor STAT5.

BD750 is an effective immunosuppressant and a JAK3 STAT5 inhibitor, inhibits IL-2-induced JAK3 STAT5-dependent T cell proliferation(IC50 of 1.5 μM and 1.1 μM in mouse and human T cells, respectively)

HM43239 is an orally active and selective FLT3 inhibitor with IC 50 s of 1.1 nM, 1.8 nM and 1.0 nM for FLT3 WT, FLT3 internal tandem duplication (ITD) and FLT3 D835Y kinases, respectively. HM43239 directly inhibits the kinase activity of FLT3 as a reversible Type I inhibitor and effectively modulates downstream p-STAT5 and p-ERK. HM43239 also demonstrated inhibition of SYK, JAK1 2 and TAK1. HM43239 inhibits the proliferation and induces the apoptosis of leukemic cells [1] [2] [3].

AS2863619 free base enables the conversion of antigen-specific effector memory T cells into Foxp3+ regulatory T (Treg) cells. It is a potent, orally active CDK8 and CDK19 inhibitor (IC50s: 0.61 nM and 4.28 nM). STAT5 activation enhanced by AS2863619 free base inhibition of CDK8 19, which consequently activates the Foxp3 gene.

STAT5-IN-2 is an inhibitor of STAT5 with antileukemic effects (EC50s: 9 μM and 5 μM in K562 and KU812 cells, respectively).

MK256 is a novel CDK8 inhibitor that demonstrates potent antitumor activity against AML by inhibiting the STAT pathway. It induces differentiation and maturation while inhibiting proliferation in AML cell lines. MK256 decreases the phosphorylation of STAT1(S727) and STAT5(S726) and reduces mRNA expression of MCL-1 and CCL2 in these cells. Its efficacy is validated in the MOLM-14 xenograft model, showing phosphorylation inhibition of STAT1(S727) and STAT5(S726) post-treatment. Pharmacokinetic studies in the MOLM-14 model reveal a dose-dependent inhibition of the STAT pathway. Both in vitro and in vivo studies confirm that MK256 effectively downregulates the STAT pathway.

Tyk2-IN-22 (Compound A8) is a selective inhibitor of tyrosine kinase 2 (Tyk2), effectively inhibiting Tyk2, JAK1, and JAK3 with IC50 values of 9.7 nM, 148.6 nM, and 883.3 nM, respectively. Additionally, Tyk2-IN-22 suppresses downstream STAT5 phosphorylation.

FLT3-IN-28 (Compound 12y) is an orally active FLT3 inhibitor with antitumor properties. It selectively targets cancer cells with FLT3 internal tandem duplication (ITD) mutations, demonstrating IC50 values of 85, 290, 130, 65, and 220 nM against BaF3-FLT3-ITD, BaF3-TEL-VEGFR2, MV4-11, MOLM-13, and MOLM-14 cell lines, respectively. These lines include acute myeloid leukemia (AML) cells harboring FLT3-ITD mutations such as MV4-11 and MOLM-13 14. The compound also reduces phosphorylation levels of FLT3 and STAT5 in MOLM-13 cells, leading to cell cycle arrest and apoptosis. With an oral bioavailability of 19.2% in SD rats, FLT3-IN-28 extends survival in a dose-dependent manner in MOLM-13 xenografted NSG mouse models. It holds promise for research in FLT3-ITD-related cancer studies.

STAT5-IN-3 (Compound 14a) is a STAT5 inhibitor with anticancer properties. It works by blocking the tyrosine phosphorylation of STAT5A 5B at the Y694 699 sites, significantly reducing the expression of the STAT5B protein. This leads to the inhibition of downstream gene transcription, thereby preventing the proliferation and survival of leukemia cells. Additionally, STAT5-IN-3 has significant potential in overcoming chemotherapy resistance.

MS-1020 is a JAK3 and STAT3 inhibitor. MS-1020 selectively blocks constitutively-active JAK3 and consistently suppressed interleukin-2-induced JAK3/STAT5 signalling. MS-1020 potently inhibits persistently-active STAT3 in a cell type-specific manner.

XL019 is a potent and selective JAK2 inhibitor with IC50 of 2.2 nM, 100 fold selectivity over JAK1.

AC-4-130, a powerful inhibitor of the SH2 domain of STAT5, effectively hinders STAT5 activation, dimerization, nuclear translocation, and transcription of genes reliant on STAT5. This compound directly binds to STAT5, ultimately leading to cell cycle arrest and apoptosis in FLT3-ITD-driven leukemic cells. AC-4-130 exhibits notable anti-cancer properties and effectively suppresses abnormal STAT5 activity in acute myeloid leukemia (AML), making it a promising therapeutic option [1].

JAK2 inhibitor (IC50 = 397 nM). Also inhibits STAT3 and STAT5 phosphorylation. Inhibits cell growth and induces apoptosis in cells expressing the JAK2V617F mutation. Manshouri et al (2011) Bone marrow stroma-secreted cytokines protect JAK2(V617F)-mutated cells from the effects of a JAK2 inhibitor. Cancer Res. 71 3831 PMID:21512135 |Quintás-Cardama et al (2011) Preclinical characterization of atiprimod, a novel JAK2 AND JAK3 inhibitor. Invest.New Drugs 29 818 PMID:20372971

CAY10763 is a dual inhibitor of indolamine 2,3-dioxygenase 1 (IDO1; IC50= 46 nM) and STAT3 activation.1It binds to STAT3 (Kd= 530 nM) and selectively reduces the levels of STAT3 phosphorylated at the tyrosine in position 705 (STAT3Y705) over phosphorylated STAT3S727, STAT1, and STAT5 in SKOV3 cells when used at a concentration of 500 nM. It also inhibits STAT3 nuclear translocation in SKOV3 cells. CAY10763 is cytotoxic to HCT116, SKOV3, A549, and HepG2 cancer cells (IC50s = 37, 28, 33, and 12 nM, respectively). It reduces tumor growth in B16/F10 mouse melanoma and HepG2 mouse xenograft models when administered at doses of 100 and 10 mg/kg, respectively. 1.Huang, R., Jing, X., Huang, X., et al.Bifunctional naphthoquinone aromatic amide-oxime derivatives exert combined immunotherapeutic and antitumor effects through simultaneous targeting of indoleamine-2,3-dioxygenase and signal transducer and activator of transcription 3J. Med. Chem.63(4)1544-1563(2020)

Debio 0617B is a multi-kinase inhibitor that reduces maintenance and self-renewal of primary human AML CD34+ stem progenitor cells. debio 0617B targets key kinases upstream of STAT3 STAT5 signalling, such as JAK, ABL, SRC and class III V receptor tyrosine kinases. debio 0617B can be used to study STAT3 driven solid tumours.

SH-4-54 is a most potent, small molecule, nonphosphorylated STAT3 inhibitor.