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-169412
    MAPK-IN-3
    		Activator
    MAPK-IN-3 (Compound 4a) is an anti-proliferative agent that shows particularly strong inhibitory effects on KYSE 30, HCT 116, and HGC 27, with IC50 values of 0.57 μM, 3.27 μM, and 2.28 μM, respectively. MAPK-IN-3 blocks the cell cycle via a p53-dependent mechanism and induces cell apoptosis through a p53-independent mechanism. MAPK-IN-3 downregulates the expression of cell cycle-related proteins like Cyclin D1 and cyclin B1, upregulates pro-apoptotic proteins such as cleaved PARP, cleaved caspase-7, and cleaved caspase-9, and reduces the expression of anti-apoptotic proteins like Bcl-2. Additionally, MAPK-IN-3 increases the intracellular level of ROS in KYSE 30 cells and upregulates the expression of members of the MAPK signaling pathway associated with ROS, such as p-ERK, p-p38 and p-JNK.
    MAPK-IN-3
  • HY-19399B
    Iroxanadine sulfate
    		Activator
    Iroxanadine (BRX 005) sulfate is a vasculoprotector. Iroxanadine is a p38 kinase and HSP protein dual activator. Iroxanadine sulfate has the potential for atherosclerosis and vascular diseases research.
    Iroxanadine sulfate
  • HY-119731
    Antidesmone
    		Inhibitor
    Antidesmone is a isoquinoline alkaloid that can be isolated from Antidesma membranaceum. Antidesmone can prevent acute lung injury in vivo via inhibiting MAPK and NF-κb activities.
    Antidesmone
  • HY-146032
    p38-α MAPK-IN-4
    		Inhibitor
    p38-α MAPK-IN-4 (Compound 69) is a selective p38α MAPK inhibitor with an IC50 of 1.5 µM. p38-α MAPK-IN-4 rapidly and strongly prevents the development of mechanical allodynia (MA) in vivo.
    p38-α MAPK-IN-4
  • HY-17598R
    Rafoxanide (Standard)
    		Inhibitor
    Rafoxanide (Standard) is the analytical standard of Rafoxanide. This product is intended for research and analytical applications. Rafoxanide is a poent, orally active halogenated salicylaniline agent with antiparasitic activity. Rafoxanide interferes with energy metabolism in trematodes by uncoupling oxidative phosphorylation. Rafoxanide is also found to be a potent inhibitor of the BRAF V600E mutant protein, which is important in colorectal cancer. Rafoxanide can be used for the control of infestation with Hemonchus species or Fasciola species in sheep and cattle as well as Oestrus ovis in sheep. Rafoxanide can also be used for cancer research.
    Rafoxanide (Standard)
  • HY-12145
    CP-99994 hydrochloride
    		Inhibitor
    CP-99994 hydrochloride is a Tachykinin neurokinin 1 (NK-1) receptor antagonist with a Ki of 0.25 nM. CP-99994 hydrochloride prevents colorectal sensitization in the context of visceral hypersensitivity. CP-99994 hydrochloride 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 hydrochloride
  • HY-173188
    EGFR-IN-154
    		Agonist
    EGFR-IN-154 (compound 4c) is an EGFR inhibitor with EC50 values of 0.16 μM, 21.73 μM and 41.56 μM against EGFR Del19, EGFR WT and EGFR L858R, respectively. EGFR-IN-154 shows anticancer activity on various cance cell lines. EGFR-IN-154 induces mitochondrial apoptosis, and decreases pERK1/2 and pAkt levels, but increases pJNK and pp38 levels.
    EGFR-IN-154
  • HY-176127
    JX10
    		Inhibitor
    JX10 is a senomorphic agent. JX10 suppresses the expression of p38 MAPK and NF-κB. JX10 exhibits competent antiaging effects in C. elegans, senescent cells, and aged mice.
    JX10
  • HY-150612S
    (R)-STU104-d6
    (R)-STU104-d6 is a deuterium labeled (R)-STU104 (HY-150612). (R)-STU104 is a potent and orally active TAK1-MKK3 interaction inhibitor with IC50s of 0.58 μM and 4.0 μM for TNF-α and MKK3 phosphorylation. (R)-STU104 suppresses the TAK1/MKK3/p38/MnK1/MK2/elF4E signal pathways through binding with MKK3 and disrupting the TAK1 phosphorylating MKK3. (R)-STU104 can be used for researching ulcerative colitis.
    (R)-STU104-d<sub>6</sub>
  • HY-N6579
    Arvenin I
    Arvenin I is a natural cucurbitacin glucoside that activates T cells within the cancer-competitive environment. Arvenin I covalently reacts with and hyperactivates MKK3, thereby reviving the mitochondrial fitness of exhausted T cells through the activation of the p38MAPK pathway. Arvenin I exhibits broad-spectrum antiproliferative against cancer cells. Arvenin I enhances antitumor effects both as a monotherapy and in combination with immune checkpoint inhibitors in mice. Arvenin I can be used for cancer research, such as colon cancer, breast cancer, lung cancer, and ovarian cancer[1][2].
    Arvenin I
  • HY-W707656
    Aspirin-d7
    Aspirin-d7 is the deuterium labeled Aspirin (HY-14654). Aspirin (Acetylsalicylic acid) is an orally active, potent and irreversible inhibitor of cyclooxygenase COX-1 and COX-2, with IC50 values of 5 and 210 μg/mL, respectively. Aspirin induces apoptosis. Aspirin inhibits the activation of NF-κB. Aspirin also inhibits platelet prostaglandin synthetase, and can prevent coronary artery and cerebrovascular thrombosis.
    Aspirin-d<sub>7</sub>
  • HY-162364
    p38-α MAPK-IN-7
    		Inhibitor
    p38-α MAPK-IN-7 (compound 4) is a p38α-MAPK inhibitor with an IC50 value of 98.7 nM. p38-α MAPK-IN-7 protects neuronal cells from dexamethasone-induced ROS production.
    p38-α MAPK-IN-7
  • HY-B0026R
    Ceftiofur hydrochloride (Standard)
    		Inhibitor
    Ceftiofur hydrochloride (Standard) is the analytical standard of Ceftiofur hydrochloride (HY-B0026). This product is intended for research and analytical applications. Ceftiofur hydrochloride is a cell wall synthesis inhibitor that targets bacterial penicillin-binding proteins (PBPs) and has anti-inflammatory effects in endotoxemia. Ceftiofur hydrochloride exerts bactericidal effects by inhibiting the synthesis of bacterial cell wall peptidoglycan, leading to bacterial cell lysis. Ceftiofur hydrochloride also inhibits the activation of NF-κB and MAPKs, thereby reducing the secretion of pro-inflammatory cytokines such as TNF-α, IL-1β, and IL-6.
    Ceftiofur hydrochloride (Standard)
  • HY-132878
    FgGpmk1-IN-1
    		Inhibitor
    FgGpmk1-IN-1 is a novel fusarium graminearum mitogen-activated protein kinase (FgGpmk1) inhibitor with an EC50 value of 3.46 μg/mL.
    FgGpmk1-IN-1
  • HY-153348
    p38 Kinase inhibitor 4
    		Inhibitor
    p38 Kinase inhibitor 4 (compound 135) is a potent p38 inhibitor.
    p38 Kinase inhibitor 4
  • HY-N12561
    Pestanoid A
    		Inhibitor
    Pestanoid A is a rearranged pimarane diterpenoid osteoclastogenesis inhibitor with an IC50 of 4.2 μM. Pestanoid A can be isolated from the marine mesophotic zone chalinidae sponge-associated fungus, Pestalotiopsis sp. NBUF145. Pestanoid A inhibits the receptor activator of NF-kB ligand-induced MAPK and NF-κB signaling by suppressing the phosphorylation of ERK1/2-JNK1/2-p38 MAPKs and NF-κB nuclear translocation. Pestanoid A can be used for the study of osteoporosis.
    Pestanoid A
  • HY-172110
    Apoptosis inducer 35
    		Inhibitor
    Apoptosis inducer 35 (Compound 6) is a multi-targeted inhibitor, that reduces the expressions of EGFR, AKT, ERK and P38-MAPKα. Apoptosis inducer 35 inhibits the proliferation of cancer cell A549 and Jurkat, arrests the cell cycle at S phase, and induces apoptosis.
    Apoptosis inducer 35
  • HY-163151
    JE-133
    		Inhibitor
    JE-133 is an optically active isochromane-2H-chromene conjugate. JE-133 exhibits antioxidant and anti-inflammatory activities. JE-133 is a neuroprotective agent that effectively inhibits neuronal oxidative damage associated with PI3K/Akt and MAPK signaling pathways. JE-133 can also inhibit lipopolysaccharide (LPS) (HY-D1056)-induced neuroinflammation by regulating JAK/STAT and Nrf2 signaling pathways.
    JE-133
  • HY-175655
    BChE/p38-α MAPK-IN-1
    		Inhibitor
    BChE/p38-α MAPK-IN-1 is a selective dual inhibitor of hBChE (IC50 = 772 nM) and p38α MAPK (IC50 = 191 nM). BChE/p38-α MAPK-IN-1 reduces the production of pro-inflammatory cytokines (IL-1β, IL-6, IL-8, TNF-α) in cells. BChE/p38-α MAPK-IN-1 improves Scopolamine (HY-N0296)-induced cognitive impairment, as well as alleviates LPS (HY-D1056)-induced spatial learning impairment and exerts anti-neuroinflammatory effects in mice. BChE/p38-α MAPK-IN-1 can be used for the study of Alzheimer’s disease (AD) by targeting both cholinergic deficit and neuroinflammation.
    BChE/p38-α MAPK-IN-1
  • HY-171656
    G721-0282
    		Inhibitor
    G721-0282 is an orally active CHI3L1 inhibitor. G721-0282 can reduce the expression of inflammatory proteins and cytokines. G721-0282 inhibits the activation of the NF-κB signaling pathway. G721-0282 inhibits neuroinflammation and reduces anxious behavior. G721-0282 significantly inhibits the proliferation of osteosarcoma (OS) cells by suppressing the STAT3 signaling pathway. G721-0282 induces OS cell apoptosis by upregulating pro-apoptotic protein levels and downregulating anti-apoptotic protein levels. G721-0282 can be used for researches on neuroinflammatory conditions and cancer.
    G721-0282
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
p38 MAPK Isoform Comparison

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