2. Signaling Pathways
  3. MAPK/ERK Pathway
  4. p38 MAPK

p38 MAPK

p38 MAPK

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The p38 MAPK family consists of highly conserved proline-directed serine-threonine protein kinases that are activated in response to a number many growth factors, cytokines, and chemotactic substances, such as vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF), PDGF, TNF, interleukins, lipopolysaccharide (LPS) and formyl-methionyl-leucyl-phenylalanine (fMLP). It is well known that p38 is involved in inflammation, apoptosis, cardiomyocyte hypertrophy and cell differentiation.

The p38 MAPK family is composed of four proteins: p38α (encoded by the gene Mapk14), p38β (Mapk11), p38γ (Mapk12), and p38δ (Mapk13). Their coding genes have a distinct tissue distribution and they appear differentially expressed, being Mapk14 the most highly expressed. p38 MAPKs are substrates for three MAP2K (MKK6, MKK3, and MKK4). The contribution of each of these MAP2K to p38 MAPKs activation depends on the stimulus and the cell type. The MAP3Ks that lead to p38 MAPKs activation are ASK1, DLK1, TAK1, TAO1, TAO2, TPL2, MLK3, MEKK3, MEKK4, and ZAK1.

p38 MAPK Isoform Specific Products:

p38 MAPK Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-10328
    Neflamapimod
    		Inhibitor 99.32%
    Neflamapimod (VX-745) is a potent, blood-brain barrier penetrant, highly selective inhibitor of p38α inhibitor with an IC50 for p38α of 10 nM and for p38β of 220 nM. Neflamapimod (VX-745) possesses anti-inflammatory activity.
    Neflamapimod
  • HY-112089
    Naporafenib
    		Inhibitor 99.72%
    Naporafenib (LXH254) is a potent, selective, orally active, type II BRAF and CRAF inhibitor, with IC50 values of 0.072 and 0.21 nM against CRAF and BRAF, respectively.
    Naporafenib
  • HY-10402
    Losmapimod
    		Inhibitor 99.96%
    Losmapimod (GSK-AHAB) is a selective, potent, and orally active p38 MAPK inhibitor with pKis of 8.1 and 7.6 for p38α and p38β, respectively.
    Losmapimod
  • HY-111431A
    p-Cresyl sulfate potassium
    		Activator 99.86%
    p-Cresyl sulfate potassium is a uremic toxin that binds to a prototype protein. p-Cresyl sulfate potassium activates the JNK and p38 MAPK signaling pathways. p-Cresyl sulfate potassium has pro-inflammatory activity.
    p-Cresyl sulfate potassium
  • HY-W015883
    Fumaric acid
    		Inhibitor 99.49%
    Fumaric acid is an unsaturated dicarbonic acid, an intermediate product of the citric acid cycle that provides intracellular energy in the form of ATP. Fumaric acid exerts anti-inflammatory effects by inhibiting the NF-κB signaling pathway dependent on p38 MAPK. Fumaric acid can be used in the study of pregnancy-induced hypertension.
    Fumaric acid
  • HY-147268
    Exarafenib
    		Inhibitor 99.68%
    Exarafenib (RAF/KIN_2787) is an orally-available, selective pan-RAF inhibitor. Exarafenib is effective in RAF-dependent cancers, including all classes of BRAF alterations. Exarafenib suppresses MAPK signaling in RAF-dependent melanoma cell lines. Exarafenib has anticancer activity.
    Exarafenib
  • HY-10401
    VX-702
    		Inhibitor 99.54%
    VX-702 is a highly selective inhibitor of p38α MAPK, 14-fold higher potency against the p38α versus p38β.
    VX-702
  • HY-107427
    PF-3644022
    		Inhibitor 99.65%
    PF-3644022 is a potent, selective, orally active and ATP-competitive MAPKAPK2 (MK2) inhibitor with an IC50 of 5.2 nM and a Ki of 3 nM. PF-3644022 also inhibits MK3 and p38 regulated/activated kinase (PRAK) with IC50s of 53 nM and 5.0 nM, respectively. PF-3644022 potently inhibits TNFα production and has anti-inflammatory effect.
    PF-3644022
  • HY-139414
    Lysophosphatidylcholines
    		≥99.0%
    Lysophosphatidylcholines is an orally active lysolipid and a component of oxidized low density lipoprotein (LDL). Lysophosphatidylcholines induces cell injury, the production of IL-1β and apoptosis. Lysophosphatidylcholines has a proactive effect on sepsis.
    Lysophosphatidylcholines
  • HY-10261A
    Afatinib dimaleate
    		Inhibitor 99.88%
    Afatinib (BIBW 2992) dimaleate is an orally active, potent and irreversible dual specificity inhibitor of ErbB family (EGFR and HER2), with IC50 values of 0.5 nM, 0.4 nM, 10 nM and 14 nM for EGFRwt, EGFRL858R, EGFRL858R/T790M and HER2, respectively. Afatinib dimaleate can be used for the research of esophageal squamous cell carcinoma (ESCC), non-small cell lung cancer (NSCLC) and gastric cancer.
    Afatinib dimaleate
  • HY-10406
    Talmapimod
    		Inhibitor 98.97%
    Talmapimod (SCIO-469) is an orally active, selective, and ATP-competitive p38α inhibitor with an IC50 of 9 nM. Talmapimod shows about 10-fold selectivity over p38β, and at least 2000-fold selectivity over a panel of 20 other kinases, including other MAPKs.
    Talmapimod
  • HY-11068
    SB 239063
    		Inhibitor 99.61%
    SB 239063 is a potent, selective and orally active p38 MAPK inhibitor, exhibits an IC50 of 44 nM for recombinant purified human p38α, with equipotent inhibitory activity against p38α and p38β. SB 239063 has no effect on p38γ or p38δ. With anti-asthma activity and also be used to enhance memory which is impaired due to aging or medical conditions, such as, AD.
    SB 239063
  • HY-W007355
    Skatole
    		Activator 99.97%
    Skatole (3-methylindole) is a heterocyclic compound naturally found in the feces of vertebrates and can be found in certain plants. Skatole can be produced by intestinal bacteria, inducing apoptosis of intestinal epithelial cells through activating aryl hydrocarbon receptors (AhR) and p38. Skatole has been used in specific products of the perfume industry or as a flavor additive in ice cream.
    Skatole
  • HY-15509A
    Semapimod tetrahydrochloride
    		98.43%
    Semapimod tetrahydrochloride (CNI-1493), an inhibitor of proinflammatory cytokine production, can inhibit TNF-α, IL-1β, and IL-6. Semapimod tetrahydrochloride inhibits TLR4 signaling (IC50≈0.3 μM). Semapimod tetrahydrochloride inhibits p38 MAPK and nitric oxide production in macrophages. Semapimod tetrahydrochloride has potential in a variety of inflammatory and autoimmune disorders.
    Semapimod tetrahydrochloride
  • HY-114277A
    Sotorasib racemate
    		Activator 98.99%
    Sotorasib racemate (Compound A) is an orally active racemate of Sotorasib (HY-114277), a covalent inhibitor of KRAS G12C mutant which induces adaptive feedback activation of MAPK pathway. Sotorasib racemate also exerts inhibitor activity against KRAS G12C induced cancer and can be applied to cancer research.
    Sotorasib racemate
  • HY-10403
    PH-797804
    		Inhibitor 98.92%
    PH-797804 is a ATP-competitive, selective p38α/p38β inhibitor (IC50=26 nM and Ki=5.8 nM for p38α; Ki=40 nM for p38β) and does not inhibit JNK2.
    PH-797804
  • HY-138936
    SSK1
    		Activator 99.02%
    SSK1, a senescence-specific killing compound, is a β-galactosidase-targeted proagent attenuates inflammation. SSK1 is activated by lysosomal β-galactosidase and selectively killed senescent cells through the activation of p38 MAPK and induction of apoptosis.
    SSK1
  • HY-N0755
    Rhoifolin
    		Activator 99.09%
    Rhoifolin is a flavone glycoside can be isolated from Rhus succedanea. Rhoifolin has anti-diabetic effect acting through enhanced adiponectin secretion, tyrosine phosphorylation of insulin receptor-β and glucose transporter 4 (GLUT 4) translocation. Rhoifolin has an anti-inflammatory action via multi-level regulation of inflammatory mediators. Rhoifolin ameliorates titanium particle-stimulated osteolysis and attenuates osteoclastogenesis via RANKL-induced NF-κB and MAPK pathways. Rhoifolin also has cytotoxic activity against different cancer cell lines.
    Rhoifolin
  • HY-N0188
    Esculin
    		Inhibitor 99.78%
    Esculin is a fluorescent coumarin glucoside, the active ingredient in ash bark. Esculin has antidiabetic effects, improves cognitive impairment in experimental diabetic nephropathy (DN) via the MAPK signaling pathway, and exerts antioxidant stress and anti-inflammatory effects. Esculin also has anticancer, antibacterial, antiviral, neuroprotective, antithrombotic, and therapeutic properties for eye diseases.
    Esculin
  • HY-18850
    MAPK13-IN-1
    		Inhibitor 98.93%
    MPAK13-IN-1 is a MAPK13 (p38δ) inhibitor, with an IC50 of 620 nM.
    MAPK13-IN-1
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
p38 MAPK Isoform Comparison

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