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-14305
    BMS-582949
    BMS-582949 (compound 7k) is an orally active and highly selective p38α MAP kinase inhibitor, with IC50 values of 13 nM for p38α, and 50 nM for cellular TNFα. BMS-582949 can be used for research on rheumatoid arthritis.
    BMS-582949
  • HY-N10423
    Cubebin
    Activator
    Cubebin ((-)-Cubebin), a dibenzyl butyrolactone lignan, is an orally active AChE inhibitor. Cubebin binds to active sites of NF-κB, TNF-α, and TGF-β1 via hydrogen and hydrophobic interactions, obstructing critical residues to inhibit pro-inflammatory or renal fibrosis-related activity. Cubebin enhances p38 MAPK phosphorylation to increase tyrosinase gene expression, stimulating melanogenesis via elevated tyrosinase activity, expression, and mRNA levels. Cubebin reduces oxidative stress via enhanced endogenous antioxidant enzyme activity and inhibited lipid peroxidation, regulates lipid metabolism, improves glycemic control, and exerts renoprotective effects via reduced renal dysfunction markers and improved renal architecture. Cubebin shows antimicrobial activity. Cubebin exerts larvicidal activity against Angiostrongylus cantonensis larvae, with no cytotoxicity toward monkey or human cell lines or Caenorhabditis elegans. Cubebin can be used for the research of diabetic nephropathy, melanoma, colon adenocarcinoma, neuroangiostrongyliasis, Alzheimer’s disease (AD) and depression.
    Cubebin
  • HY-12144
    CP-99994
    Inhibitor
    CP-99994 is a Tachykinin neurokinin 1 (NK-1) receptor antagonist with a Ki of 0.25 nM. CP-99994 prevents colorectal sensitization in the context of visceral hypersensitivity. CP-99994 reduces colorectal hypersensitivity induced by acetic acid injections in a model of bladder-colon cross-sensitization. CP-99994 hydrochloride attenuates the neuroglial interactions and MAPK-p38 phosphorylation associated with visceral hypersensitivity.
    CP-99994
  • HY-W050000R
    OR-1855 (Standard)
    Inhibitor
    OR-1855 (Standard) is an analytical standard of OR-1855 (HY-W050000). This product is intended for research and analytical applications. OR-1855, an active metabolite of Levosimendan (HY-14286), has effect on myometrial contractility. OR-1855 exerts anti-inflammatory effects by inhibiting IL-1β-induced ROS formation and NAD(P)H oxidase-dependent superoxide radical generation in HUVECs. OR-1855 inhibits IL-1β-induced phosphorylation p38 MAPK, ERK1/2, c-Jun and JNK in HUVECs. OR-1855 can be used for the study of inflammation.
    OR-1855 (Standard)
  • HY-167877
    PS-166276
    Inhibitor
    PS-166276 is a highly potent and less cytotoxic inhibitor of p38. PS166276 has an IC50 of 28 nM at p38 kinase and 170 nM in the THP-1 TNFα assay.
    PS-166276
  • HY-B1204S4
    Histamine-15N3
    Activator
    Histamine-15N3 is the 15N3-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>15</sup>N<sub>3</sub>
  • HY-116474R
    Viridicatol (Standard)
    Inhibitor
    Viridicatol (Standard) is the analytical standard of Viridicatol (HY-116474). This product is intended for research and analytical applications. Viridicatol is a quinolone alkaloid with anti-inflammatory, antibacterial, antifungal, osteogenic and chondrogenic activities. Viridicatol reduces the phosphorylation levels of ERK, JNK, p38 and STAT6; inhibits MMP-2, MMP-9, NF-κB signaling pathway and PTP1B; downregulates genes related to mast cell activation; and binds to SHN3 to activate the Wnt/SHN3 signaling pathway. Viridicatol inhibits the expression of pro-inflammatory mediators and cytokines, and promotes osteogenic/chondrogenic differentiation. Viridicatol can be used in studies related to fibrosarcoma, allergy, bacterial infection, fungal infection and osteoporosis.
    Viridicatol (Standard)
  • HY-179047
    SMU-L11-R
    Activator
    SMU-L11-R is a selective TLR7 agonist with an EC50 of 0.012 μM for human TLR7. SMU-L11-R specifically activates TLR7, recruits  MyD88, and triggers MAPK/NF-κB pathways, leading to TNF-α/IL-1β/IL-6 secretion in both mouse and human peripheral blood mononuclear cells. SMU-L11-R promotes M1-like macrophage polarization. SMU-L11-R exhibits excellent synergistic anti-tumor effects with PD-L1 inhibitors by upregulating CD8+T cells. SMU-L11-R shows potential in colorectal cancer studies.
    SMU-L11-R
  • HY-183042
    p38α-IN-12
    Inhibitor
    p38α-IN-12 is an orally bioavailable p38α MAPK inhibitor, with an IC50 of 0.11 nM and a Ki of 0.2 nM against human targets. p38α-IN-12 inhibits the production of TNFα in cellular systems and exerts in vivo efficacy in acute mouse models.
    p38α-IN-12
  • HY-114118C
    Semaglutide sodium
    Activator
    Semaglutide sodium is a long-acting, selective, competitive GLP-1R agonist that can penetrate the blood-brain barrier. After activating GLP-1R, Semaglutide sodium promotes insulin secretion, inhibits gastric emptying and appetite, and at the same time enhances autophagy, inhibits oxidative stress and apoptosis. Semaglutide sodium also regulates mitochondrial function and lipid metabolism (such as reducing de novo lipogenesis in the liver). Semaglutide sodium has activities such as lowering blood sugar, reducing weight, neuroprotection (such as improving motor function in Parkinson's disease models, reducing α-synuclein aggregation) and improving hepatic steatosis. Semaglutide sodium can be used for the study of neurodegenerative diseases and liver diseases such as type 2 diabetes, obesity, Parkinson's disease, metabolic associated fatty liver disease (MASLD), and cancer.
    Semaglutide sodium
  • HY-171292
    CK1δ-IN-9
    Inhibitor
    CK1δ-IN-9 (Compound 8) is the inhibitor for casein kinase 1 that inhibits CK1δ with IC50 of 1.4 nM. CK1δ-IN-9 inhibits p38α and p38β with IC50 of 0.25 μM and 0.78 μM. CK1δ-IN-9 exhibits pharmacokinetic characteristics with a good oral bioavailability (70%) and a moderate clearance.
    CK1δ-IN-9
  • HY-111431R
    p-Cresyl sulfate (Standard)
    Activator
    Platycodin D (Standard) is the analytical standard of Platycodin D. This product is intended for research and analytical applications. Platycodin D is a saponin isolated from Platycodon grandiflorus, acts as an activator of AMPKα, with anti-obesity property. WNT/β-catenin pathway mediates the anti-adipogenic effect of platycodin D.
    p-Cresyl sulfate (Standard)
  • HY-175841
    Tau Protein Phosphorylation-IN-1
    Inhibitor
    Tau Protein Phosphorylation-IN-1 is a tau protein phosphorylation inhibitor that potently protects PC12 cells against Aβ25–35-induced cytotoxicity (EC50 = 1.93 μM), and can penetrate the blood-brain barrier (BBB).Tau Protein Phosphorylation-IN-1 reverses the hyperphosphorylation of tau, significantly inhibits the expression of certain immune-related cytotoxic factors, suppresses the MAPK and NF-κB signaling pathways, and significantly inhibits the expression of RAGE and the apoptosis factors Bax/Bcl-2, both in vitro and in vivo. Tau Protein Phosphorylation-IN-1 relieves nerve damage, and improves learning and memory in an Alzheimer’s disease (AD) mouse model. Tau Protein Phosphorylation-IN-1 can be used for AD research.
    Tau Protein Phosphorylation-IN-1
  • HY-118626
    PD-254552
    Inhibitor
    PD-254552 is a MEK inhibitor. PD-254552 exhibits hepatotoxicity and gastrointestinal toxicity in mice.
    PD-254552
  • HY-180112
    SH543
    Inhibitor
    SH543 is a potent anti-osteoporosis agent. SH543 inhibits nuclear factor κB ligand (RANKL)-induced osteoclastogenesis with an IC50 of 3.3 nM. SH543 directly binds to KEAP1, activates the Nrf2-HO-1 antioxidant pathway, reduces ROS levels, and inhibits PI3K-AKT and MAPK signaling pathways. SH543 attenuates pathological bone loss in ovariectomized mice. SH543 can be used for osteoporosis research.
    SH543
  • HY-P11214
    Hydrostatin-TL1
    Inhibitor
    Hydrostatin-TL1 (H-TL1), a nine-amino-acid peptide, is a TNF-α antagonist. Hydrostatin-TL1 can be isolated from the venom gland of sea snake Hydrophis cyanocinctus. H-TL1 competitively inhibits the interaction between TNF-α/TNFR1 and attenuates the cytotoxicity and inflammation of TNF-α. Hydrostatin-TL1 can be used for TNF-α-associated inflammatory diseases, such as rheumatoid arthritis, osteoporosis and inflammatory bowel disease (IBD) research.
    Hydrostatin-TL1
  • HY-N8529
    Eupalestin
    Inhibitor
    Eupalestin is an anti-inflammatory agent. Eupalestin reduces the levels of p-p65 NF-κB and p-p38 MAPK. Eupalestin inhibits MPO and adenosine deaminase. Eupalestin decreases the levels of pro-inflammatory cytokines including IL-17A, IL-6, TNF and IFN-γ. Eupalestin exerts anti-inflammatory activity in a carrageenan (HY-125474)-induced mouse pleurisy model.
    Eupalestin
  • HY-N0576R
    Solanesol (Standard)
    Solanesol (Standard) is the analytical standard of Solanesol (HY-N0576). This product is intended for research and analytical applications. Solanesol is an orally active aliphatic terpene alcohol. Solanesol is mainly found in tobacco and other Solanaceae plants. Solanesol induces HO-1 and Hsp70 expression, activates p38 and Akt signaling pathways, and inhibits Apoptosis (reduces caspase-3 and PARP cleavage). Solanesol has antioxidant, anti-inflammatory, and neuroprotective activities. Solanesol can be used in the research of Huntington's disease, alcoholic liver disease, chronic inflammatory pain, anxiety, Alzheimer's disease, and bipolar disorder.
    Solanesol (Standard)
  • HY-N18025
    Kaempferol 3-O-(2G-glucosylrutinoside)-7-O-glucoside
    Inhibitor
    Kaempferol 3-O-(2G-glucosylrutinoside)-7-O-glucoside is an anti-inflammatory agent. Kaempferol 3-O-(2G-glucosylrutinoside)-7-O-glucoside exerts significant anti-inflammatory effects in LPS (HY-D1056)-induced RAW 264.7 macrophages by inhibiting the NF-κB, MAPK and Akt signaling pathways, thereby reducing the production of inflammatory mediators (NO, PGE2) and pro-inflammatory cytokines (TNF-α, IL-1β, IL-6).
    Kaempferol 3-O-(2G-glucosylrutinoside)-7-O-glucoside
  • HY-168567
    RIPK2-IN-6
    Inhibitor
    RIPK2-IN-6 (Compound 15a) is an inhibitor for RIPK, that inhibits the phosphorylation of RIPK2, and thus inhibits the NF-κB and MAPK signaling pathways. RIPK2-IN-6 exhibits anti-inflammatory and anti-fibrotic activities in Dextran sodium sulfate (HY-116282C)-induced mice colitis models.
    RIPK2-IN-6
Cat. No. Product Name / Synonyms Species Source
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