1. Signaling Pathways
  2. PI3K/Akt/mTOR
    Stem Cell/Wnt
  3. GSK-3

GSK-3

Glycogen synthase kinase-3; Glycogen synthase kinase 3

Glycogen synthase kinase 3 (GSK-3) is a multifunctional serine/threonine kinase consisting of two isoforms, alpha and beta. It is a highly conserved negative regulator of receptor tyrosine kinase, cytokine, and Wnt signaling pathways. Stimulation of these pathways inhibits GSK-3 to modulate diverse downstream effectors that include transcription factors, nutrient sensors, glycogen synthesis, mitochondrial function, circadian rhythm, and cell fate. GSK-3 also regulates alternative splicing in response to T-cell receptor activation, and recent phosphoproteomic studies have revealed that multiple splicing factors and regulators of RNA biosynthesis are phosphorylated in a GSK-3-dependent manner.

The malfunction or aberrant activity of GSK-3 leads to several of disorders, such as Alzheimer's disease (AD) and other neurodegenerative pathologies, and other type of diseases as diabetes, cardiovascular disorders and cancer. GSK-3 is also related to innate immune response against pathogens, which makes GSK-3 an excellent target for therapeutic intervention.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-128879A
    VP3.15 dihydrobromide
    Inhibitor 98.01%
    VP3.15 dihydrobromide is a potent, orally bioavailable and CNS-penetrant dual phosphodiesterase (PDE)7- glycogen synthase kinase (GSK)3 inhibitor, with IC50s of 1.59 μM and 0.88 μM for PDE7 and GSK-3, respectively. VP3.15 dihydrobromide has neuroprotective and neuroreparative activities, thus as potential combined anti-inflammatory and pro-remyelinating therapies for multiple sclerosis (MS).
    VP3.15 dihydrobromide
  • HY-15356
    BIO-acetoxime
    Inhibitor ≥98.0%
    BIO-acetoxime (BIA) is a potent and selective GSK-3 inhibitor, with IC50s of both 10 nM for GSK-3α/β. BIO-acetoxime has anticonvulsant and anti-infection activity.
    BIO-acetoxime
  • HY-130795
    GSK-3β inhibitor 2
    Inhibitor
    GSK-3β inhibitor 2 (Compound 3) is a potent, selective and orally active GSK-3β inhibitor with an IC50 of 1.1 nM. GSK-3β inhibitor 2 can cross the blood-brain barrier. GSK-3β inhibitor 2 has the potential for Alzheimer's disease.
    GSK-3β inhibitor 2
  • HY-107531
    A 1070722
    Inhibitor 99.95%
    A 1070722 is a potent and selective glycogen synthase kinase 3 (GSK-3) inhibitor, with a Ki of 0.6 nM for both GSK-3α and GSK-3β. A 1070722 can penetrate the blood-brain barrier (BBB) and accumulates in brain regions, thus potential for PET radiotracer for the quantification of GSK-3 in brain.
    A 1070722
  • HY-139324
    Cu(II)GTSM
    Inhibitor
    Cu(II)GTSM, a cell-permeable Cu-complex, significantly inhibits GSK3β. Cu(II)GTSM inhibits Amyloid-β oligomers (AβOs) and decreases tau phosphorylation. Cu(II)GTSM also decreases the abundance of Amyloid-β trimers. Cu(II)GTSM is a potential anticancer and antimicrobial agent.
    Cu(II)GTSM
  • HY-103647
    K00546
    Inhibitor 98.08%
    K00546 is a potent CDK1 and CDK2 inhibitor with IC50s of 0.6 nM and 0.5 nM for CDK1/cyclin B and CDK2/cyclin A, respectively. K00546 is also a potent CDC2-like kinase 1 (CLK1) and CLK3 inhibitor with IC50s of 8.9 nM and 29.2 nM, respectively.
    K00546
  • HY-122026
    PF-04802367
    Inhibitor 98.84%
    PF-04802367 (PF-367) is a highly selective GSK-3 inhibitor with an IC50 of 2.1 nM based on a recombinant human GSK-3β enzyme assay and 1.1 nM based on ADP-Glo assay. PF-04802367 shows desirable central nervous system (CNS) properties and potency. PF-04802367 is equally effective at inhibition of the two known GSK-3 isoforms (GSK-3α and GSK-3β) with IC50 values of 10.0 and 9.0 nM in mobility shift assays, respectively.
    PF-04802367
  • HY-13973A
    GSK-3 inhibitor 1
    Inhibitor 99.89%
    GSK-3 inhibitor 1 (compound core 3) is a GSK-3 inhibitor that induces stem/progenitor cell self-renewal (e.g. induces stem/progenitor cell proliferation while maintaining the ability to differentiate into tissue cells in the progeny).
    GSK-3 inhibitor 1
  • HY-B0712
    Ceftriaxone
    Inhibitor 98.19%
    Ceftriaxone (Ro 13-9904 free acid) is a broad spectrum β-lactam third-generation cephalosporin antibiotic, which has good antibacterial activity against a variety of gram-negative and positive bacteria. Ceftriaxone is a covalent inhibitor of GSK3β with IC50 value of 0.78 mM. Ceftriaxone is an inhibitor of Aurora B. Ceftriaxone has anti-inflammatory, antitumor and antioxidant activities. Ceftriaxone can be used in the study of bacterial infections and meningitis.
    Ceftriaxone
  • HY-108359
    Alsterpaullone
    Inhibitor 98.38%
    Alsterpaullone (9-Nitropaullone) is a potent CDK inhibitor, with IC50s of 35 nM, 15 nM, 200 nM and 40 nM for CDK1/cyclin B, CDK2/cyclin A, CDK2/cyclin E and CDK5/p35, respectively. Alsterpaullone also competes with ATP for binding to GSK-3alpha/GSK-3beta with IC50s of both 4 nM. Alsterpaullone has antitumor activity, and possesses potential for the study in neurodegenerative and proliferative disorders. Alsterpaullone induces apoptosis in leukemia cell line.
    Alsterpaullone
  • HY-N8423
    α-Amyrin
    Activator 99.94%
    α-Amyrin is a pentacyclic triterpenoid compound with oral activity. α-Amyrin activates the ERK and GSK-3β signaling pathways. α-Amyrin can be used in the study of metabolic syndrome induced by high fructose diet and cognitive dysfunction caused by low cholinergic neurotransmission.
    α-Amyrin
  • HY-129492
    GNF4877
    Inhibitor 99.32%
    GNF4877 is a potent DYRK1A and GSK3β inhibitor with IC50s of 6 nM and 16 nM, respectively, which leads to blockade of nuclear factor of activated T-cells (NFATc) nuclear export and increased β-cell proliferation (EC50 of 0.66 μM for mouse β (R7T1) cells).
    GNF4877
  • HY-117025A
    Manzamine A hydrochloride
    Inhibitor 99.66%
    Manzamine A hydrochloride, an orally active beta-carboline alkaloid, inhibits specifically GSK-3β and CDK-5 with IC50s of 10.2 μM and 1.5 μM, respectively. Manzamine A hydrochloride targets vacuolar ATPases and inhibits autophagy in pancreatic cancer cells. Manzamine A hydrochloride has antimalarial and anticancer activities. Manzamine A hydrochloride also shows potent activity against HSV-1.
    Manzamine A hydrochloride
  • HY-126144
    GSK-3β inhibitor 1
    Inhibitor 98.04%
    GSK-3β inhibitor 1 (compound 3a) is a glycogen synthase kinase 3β (GSK-3β) inhibitor and demonstrates high antidiabetic efficacy, with an IC50 of 4.9 nM.
    GSK-3β inhibitor 1
  • HY-103221
    MeBIO
    Inhibitor ≥98.0%
    MeBIO is a potent AhR (aryl hydrocarbon receptor) agonist, with IC50 of 44 μM (GSK-3) and 55 μM (CDK1/cyclin B), respectively. MeBIO is inactive on GSK-3β.
    MeBIO
  • HY-154851
    GSK-3 inhibitor 3
    Inhibitor 98.72%
    GSK-3 inhibitor 3 is a selective, orally active and brain-penetrant inhibitor of GSK-3, with IC50s of 0.35 nM and 0.25 nM for GSK-3α and GSK-3β, respectively. GSK-3 inhibitor 3 lowers levels of tau protein phosphorylation at S396 in a triple-transgenic mouse Alzheimer’s disease model, with IC50 of 10 nM. GSK-3 inhibitor 3 can be used for neurological disease research.
    GSK-3 inhibitor 3
  • HY-121035
    7BIO
    Inhibitor ≥98.0%
    7BIO (7-Bromoindirubin-3-Oxime) is the derivate of indirubin. 7BIO (7-Bromoindirubin-3-Oxime) has inhibitory effects against cyclin-dependent kinase-5 (CDK5) and glycogen synthase kinase-3β (GSK3β). 7BIO (7-Bromoindirubin-3-Oxime) inhibits Aβ oligomer-induced neuroinflammation, synaptic impairments, tau hyper-phosphorylation, activation of astrocytes and microglia, and attenuates Aβ oligomer-induced cognitive impairments in mice[1].
    7BIO
  • HY-112392
    GSK-3 Inhibitor XIII
    Inhibitor 98.61%
    GSK-3 Inhibitor XIII is a potent and ATP-competitive GSK-3 inhibitor with a Ki of 24 nM.
    GSK-3 Inhibitor XIII
  • HY-134575
    C24:1-Ceramide
    ≥99.0%
    C24:1-Ceramide is one of the most abundant naturally occurring ceramide. Ceramides regulates many diverse biological activities, such as cell apoptosis, cell differentiation, proliferation of smooth muscle cells, and inhibition of the mitochondrial respiratory chain.
    C24:1-Ceramide
  • HY-108264
    TCS 21311
    Inhibitor 99.18%
    TCS 21311 (NIBR3049) is a potent, highly selective JAK3 inhibitor with an IC50 of 8 nM, it displays >100-fold selectivity over JAK1, JAK2 and TYK2. TCS 21311 (NIBR3049) inhibits PKCα, PKCθ, and GSK3β with IC50s of 13, 68, and 3 nM, respectively.
    TCS 21311
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity

Glycogen synthase kinase 3 (GSK-3) is a multifunctional serine/threonine kinase found in all eukaryotes. GSK-3 is one of the few signaling mediators that play central roles in a diverse range of signaling pathways, including those activated by Wnt, PI3K, growth factors, cytokines, and ligands for G protein-coupled receptors. The PI3K pathway is known for regulating metabolism, cell growth, and cell survival. The PI3K activity is stimulated by diverse oncogenes and growth factor receptors. PI3K-mediated production of PIP3 leads to the activation of Akt. The activation of Akt leads to the phosphorylation of GSK-3, which is active in resting cells, but is inactivated by the phosphorylation. The GSK-3 has been linked to the regulation of an assembly of transcription factors, including β-catenin, NF-κB, c-Jun, CREB, and STAT. Thus, the altered activity of GSK-3 causes various effects on cytokine expression. 

 

In the absence of Wnt signaling, β-catenin is phosphorylated by CK1 and GSK-3. This phosphorylation leads to recognition by β-TrCP, leading to the ubiquitylation of β-catenin and degradation by the proteasome. Upon binding of a lipid-modified Wnt protein to the receptor complex, a signaling cascade is initiated. LRP is phosphorylated by CK1/CK2 and GSK-3, and Axin is recruited to the plasma membrane. The kinases in the β-catenin destruction complex are inactivated and β-catenin translocates to the nucleus to form an active transcription factor complex with TCF, leading to transcription of a large set of target genes.

 

Some endogenous growth factors could bind to and activate the tyrosine kinase receptor. This facilitates the recruitment of other proteins (SHC, SOS), which results in the activation of the ERK-MAPK cascade and the inhibition of GSK-3. GSK-3 exerts many cellular effects: it regulates cytoskeletal proteins, and is important in determining cell survival/cell death. GSK-3 has also been identified as a target for the actions of lithium. GSK-3 can inhibit glycogen synthase, the enzyme that catalyzes the transfer of glucose from UDPG to glycogen[1][2].

 

Reference:

[1]. Brenner D, et al. Regulation of tumour necrosis factor signalling: live or let die.Nat Rev Immunol. 2015 Jun;15(6):362-74. 
[2]. Conrad M, et al. Regulated necrosis: disease relevance and therapeutic opportunities.Nat Rev Drug Discov. 2016 May;15(5):348-66. 

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