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

p38 MAPK

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.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-125068
    RPR203494
    Inhibitor
    RPR203494 is a potent inhibitor against CYP isozymes. RPR203494 shows inhibition against p38 kinase with an IC50 value of 9 nM and an EC50 value of 60 nM. RPR203494 demonstrates an inhibition of hepatic Cytochrome P450. RPR203494 is promising for research of rheumatoid arthritis (RA).
    RPR203494
  • HY-105935R
    Keracyanin chloride (Standard)
    Inhibitor
    Keracyanin (chloride) (Standard) is the analytical standard of Keracyanin (chloride). This product is intended for research and analytical applications. Keracyanin chloride inhibits NF-κB/FAK/MAPK signaling pathway. Keracyanin chloride exhibits antioxidant, anti-inflammatory and hypoglycemic effects, and is orally active.
    Keracyanin chloride (Standard)
  • HY-N1181R
    Tamarixetin (Standard)
    Inhibitor
    Tamarixetin (Standard) is the analytical standard of Tamarixetin. This product is intended for research and analytical applications. Tamarixetin (4'-O-Methyl Quercetin) is an orally active natural flavonoid derivative of quercetin and caseinolytic protease p (ClpP) inhibitor with anti-inflammatory, antioxidant and antitumor effects. Tamarixetin inhibits the hydrolytic activity of ClpP to the fluorescent substrate Suc-LY-AMC with an IC50 of 49.73 μM, which can be used for the study of Staphylococcus aureus infection. Tamarixetin inhibits tumor cell growth, induces apoptosis, and cell cycle arrest. Tamarixetin prevents cardiac hypertrophy by inhibiting the NFAT and AKT pathways.
    Tamarixetin (Standard)
  • HY-N5083R
    Saponarin (Standard)
    Inhibitor
    Saponarin (Standard) is the analytical standard of Saponarin (HY-N5083). This product is intended for research and analytical applications. Saponarin is an orally active flavonoid compound. Saponarin can be isolated from Gypsophila trichotoma. Saponarin inhibits ERK/p38, NF-κB and MAPK phosphorylation and activates AMPK. Saponarin reduces IL-1β and COX-2. Saponarin has antioxidant, anti-inflammatory, hepatoprotective, hypoglycemic and hypotensive effects. Saponarin improves sleep disorders.
    Saponarin (Standard)
  • HY-174829
    7,4'-Dimethoxy-3-hydroxyflavone
    Inhibitor
    7,4'-Dimethoxy-3-hydroxyflavone is an orally active PAR4 antagonist. 7,4'-Dimethoxy-3-hydroxyflavone inhibits PAR4-mediated human platelet aggregation with an IC50 of 1.4 μM. 7,4'-Dimethoxy-3-hydroxyflavone inhibits PAR4-mediated human platelet aggregation and PAR4 signaling pathways, including NF-κB, Ca2+/protein kinase C, Akt, ERK and p38. 7,4'-Dimethoxy-3-hydroxyflavone prevents vascular PAR4 expression, endothelial dysfunction and ameliorates oxidative stress in Streptozotocin (STZ) (HY-13753)-induced diabetic mice. 7,4'-Dimethoxy-3-hydroxyflavone prevents thrombosis in mice without affecting bleeding time[1][2].
    7,4'-Dimethoxy-3-hydroxyflavone
  • HY-N7046S
    Silybin B-d3
    Inhibitor
    Silybin B-d3 (Silibinin B-d3) is a deuterated Silybin B (HY-N7046). Silybin B (Silibinin B) is an orally active amyloid-β aggregation inhibitor and ATR pathway activator, that can cross the blood-brain barrier. Silybin B inhibits Aβ fibril formation and promotes amorphous aggregate formation, while activating the ATR-mediated DNA damage repair pathway and inhibiting JNK/p38 MAPK signaling. Silybin B can reduce Cisplatin (HY-17394)-induced neuronal DNA damage and apoptosis. Silybin B has anti-oxidative stress, cell cycle regulation and neuroprotective activities. Silybin B is mainly used in the study of Alzheimer's disease and Cisplatin chemotherapy-related neurotoxicity.
    Silybin B-d<sub>3</sub>
  • HY-10402R
    Losmapimod (Standard)
    Inhibitor
    Losmapimod (Standard) is the analytical standard of Losmapimod. This product is intended for research and analytical applications. 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 (Standard)
  • HY-N15347
    Talaromyketide B
    Inhibitor
    Talaromyketide B is a polyketide compound with anti-inflammatory activity, discovered in the soil bacterium Talaromyces sp. KYS-41. Talaromyketide B inhibits the activation of the NF-κB and MAPK signaling pathways and dose-dependently suppresses pro-inflammatory cytokines, such as IL-1β, IL-6, IL-10, and TNF-α, as well as the transcriptional activity of inflammatory mediators, including iNOS and COX-2. Talaromyketide B holds potential for research in the fields of immunity and inflammatory diseases.
    Talaromyketide B
  • HY-B1204S3
    Histamine-13C5
    Activator
    Histamine-13C5 is the 13C labeled Histamine (HY-B1204). Histamine is the agonist for histamine receptor and a vasodilator. Histamine is an organic nitrogen compound that participates in local immune responses, regulates intestinal physiological functions, and acts as a neurotransmitter. Histamine affects p38 MAPK/Akt signaling pathway, exhibits antitumor, antioxidant and anti-inflammatory activities. Histamine can be used in the research of acute myeloid leukemia, malignant melanoma, and renal cell carcinoma.
    Histamine-<sup>13</sup>C<sub>5</sub>
  • HY-N12898
    (Z)-Tetradec-7-en-1-ol
    Activator
    (Z)-Tetradec-7-en-1-ol is an activator for mitogen-activated protein kinase (MAP kinase).
    (Z)-Tetradec-7-en-1-ol
  • HY-10401R
    VX-702 (Standard)
    Inhibitor
    VX-702 (Standard) is the analytical standard of VX-702. This product is intended for research and analytical applications. VX-702 is a highly selective inhibitor of p38α MAPK, 14-fold higher potency against the p38α versus p38β.
    VX-702 (Standard)
  • HY-N4090R
    Vicenin 3 (Standard)
    Inhibitor
    Vicenin 3 (Standard) is the analytical standard of Vicenin 3. Vicenin 3 is an angiotensin-converting enzyme (ACE) inhibitor (IC50 = 46.91 μM) that can be isolated from the aerial parts of Desmodium styracifolium. Vicenin 3 ameliorates IL-1β-induced extracellular matrix degradation in SW1353 chondrocytes by regulating the MAPK pathway. Vicenin 3 can be used for the study of osteoarthritis (OA) and hypertension.
    Vicenin 3 (Standard)
  • HY-111523
    Isomahanine
    Inducer
    Isomahanine, carbazole alkaloid, is an antioxidative agent. Isomahanine has DPPH radical scavenging activity with an IC50 value of 24 μM.
    Isomahanine
  • HY-110313R
    SB-747651A dihydrochloride (Standard)
    Inhibitor
    SB-747651A (dihydrochloride) (Standard) is the analytical standard of SB-747651A (dihydrochloride). This product is intended for research and analytical applications. SB-747651A dihydrochloride is an ATP-competitive mitogen- and stress-activated kinase 1 (MSK1) inhibitor with an IC50 of 11 nM. SB-747651A dihydrochloride also inhibits PRK2, RSK1, p70S6K and ROCK-II. SB-747651A dihydrochloride can be used for inflammation research.
    SB-747651A dihydrochloride (Standard)
  • HY-123205R
    Oxatomide (Standard)
    Inhibitor
    Oxatomide (Standard) (KW-4354 (Standard)) is the analytical standard of Oxatomide (HY-123205). This product is intended for research and analytical applications. Oxatomide (KW-4354) is an orally active dual antagonist of the H1-histamine receptor and the P2X7 receptor, as well as an inhibitor of serotonin. Oxatomide possesses antihistaminic, antiallergic and anti-inflammatory activities. Oxatomide can be used in the research of allergic diseases.
    Oxatomide (Standard)
  • HY-10295R
    SB 202190 (Standard)
    Inhibitor
    SB 202190 (Standard) is the analytical standard of SB 202190. This product is intended for research and analytical applications. SB 202190 is a selective p38 MAP kinase inhibitor with IC50s of 50 nM and 100 nM for p38α and p38β2, respectively. SB 202190 binds to the ATP pocket of the active recombinant human p38 kinase with a Kd of 38 nM. SB 202190 has anti-cancer activity and rescued memory deficits. SB202190 induces autophagy.
    SB 202190 (Standard)
  • HY-N8593R
    Undecane (Standard)
    Inhibitor
    Undecane (Standard) is an analytical standard of Undecane (HY-N8593).Undecane is a potent cAMP agonist with anti-allergic and anti-inflammatory activities. Undecane inhibits degranulation and the secretion of histamine and TNF-α. Undecane reverses the increased levels of p38 phosphorylation, NF-κB transcriptional activity and target cytokine/chemokine genes, including thymus and activation-regulated chemokine (TARC), macrophage-derived chemokine (MDC) and interleukin-8 (IL-8). Undecane can be used for the study of skin inflammatory disorders, such as atopic dermatitis.
    Undecane (Standard)
  • HY-U00324
    p38 MAPK-IN-2
    Inhibitor
    p38 MAPK-IN-2 is an inhibitor of p38 kinase.
    p38 MAPK-IN-2
Cat. No. Product Name / Synonyms Species Source
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