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-157211
    Anti-inflammatory agent 66
    		Inhibitor
    Anti-inflammatory agent 66 (compound 8) is a pterostilbene derivative with anti-inflammatory activity. Anti-inflammatory agent 66 inhibits pro-inflammatory cytokines by blocking the LPS-induced NF-κB/MAPK signaling pathway and effectively alleviates DSS-induced acute colitis in mice.
    Anti-inflammatory agent 66
  • HY-116836
    p38α inhibitor 7
    		Inhibitor
    p38α inhibitor 7 (compound 1) is an effective p38α inhibitor with oral efficacy and generally favorable pharmacokinetic properties.
    p38α inhibitor 7
  • HY-119298
    AW-814141
    		Inhibitor
    AW-814141 is a selective and orally active p38 MAP kinase inhibitor. AW-814141 has an IC50 values of 100 nM and 158 nM for p38-α and β isoforms, respectively. AW-814141 can inhibit the production of TNF-α induced by LPS (HY-D1056). AW-814141 can inhibit paw edema in rats in a dose-dependent manner. AW-814141 exhibits anti-inflammatory activity and can be used in the research of inflammatory diseases such as rheumatoid arthritis.
    AW-814141
  • HY-120796
    MW108 hydrochloride
    		Inhibitor
    MW108 (MW01-11-108SRM) hydrochloride is a selective and CNS-penetrant p38αMAPK inhibitor with a Ki of 114 nM. MW108 hydrochloride ameliorates beta-amyloid induced synaptic and cognitive dysfunction.
    MW108 hydrochloride
  • HY-W783478
    Calebin A
    		Inhibitor 98.00%
    Calebin A is a PI3K/Akt/mTOR, MAPK, and NF-κB inhibitor with oral effectiveness. Calebin A can block the autophagy-repressive, inhibiting apoptosis. Calebin A has anti-tumor activity by epigenetic regulation. Calebin A suppresses adipogenesis, modulates thermogenesis, and enriches gut probiotics. Calebin A can be used in research on osteoarthritis, Alzheimer's disease, type 2 diabetes, malignant peripheral nerve sheath tumors, and colorectal cancer.
    Calebin A
  • HY-162641
    AF-45
    		Inhibitor
    AF-45 inhibits IRAK4 and IRAK1, with IC50s of 128 nM and 1765 nM. AF-45 inhibits the release of IL-6 and TNF-α in macrophages, with IC50s of 0.53-1.54 μM and 0.6-2.75 μM. AF-45 is also an inhibitor for NF-κB/MAPK signaling pathway. AF-45 exhibits anti-inflammatory activities against DSS-induced ulcerative colitis and Lipopolysaccharide (HY-D1056)-induced acute lung injury in mouse model. AF-45 exhibits good pharmacokinetic characteristics in rat models.
    AF-45
  • HY-108644
    SB 706504
    		Inhibitor
    SB 706504 is a potent p38 MAPK inhibitor that inhibits Lipopolysaccharides (HY-D1056)-stimulated inflammatory gene expression in macrophages in chronic obstructive pulmonary disease (COPD).
    SB 706504
  • HY-174321
    A2073
    		Inhibitor
    A2073 is a flavagline derivative that potently inhibits the proliferation of erythroleukemia cells by causing cell cycle arrest and suppressing the MAPK, NF-κB, and PI3K signaling pathways. A2073 formes stable interactions with cell cycle-related proteins (CDK1, CCNA2, PRIM1). A2073 exhibits significant anti-proliferative activity against tumor cells while maintaining a favorable toxicity profile in a zebrafish xenograft tumor model. A2073 can be used for the study of acute erythroleukemia.
    A2073
  • HY-N0498R
    Nitidine chloride (Standard)
    		Inhibitor
    Nitidine (chloride) (Standard) is the analytical standard of Nitidine (chloride). This product is intended for research and analytical applications. Nitidine chloride, a potential anti-malarial lead compound derived from Zanthoxylum nitidum (Roxb) DC, exerts potent anticancer activity through diverse pathways, including inducing apoptosis, inhibiting STAT3 signaling cascade, DNA topoisomerase 1 and 2A, ERK and c-Src/FAK associated signaling pathway. Nitidine chloride inhibits LPS-induced inflammatory cytokines production via MAPK and NF-kB pathway.
    Nitidine chloride (Standard)
  • HY-N8593S
    Undecane-d24
    		Inhibitor
    Undecane-d24 is the deuterium labeled 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-d<sub>24</sub>
  • HY-168841
    p38α-MK2-IN-1
    		Inhibitor
    p38α-MK2-IN-1 (Compound 36) is a p38α-MK2 complex inhibitor (IC50: 5 nM). p38α-MK2-IN-1 has a robust inflammation inhibitory effect and joint repair ability.
    p38α-MK2-IN-1
  • HY-N17850
    5-Hydroxy-6,7-dimethoxyflavone
    		Inhibitor
    5-Hydroxy-6,7-dimethoxyflavone is an orally active inhibitor of ferroptosis (Ferroptosis). 5-Hydroxy-6,7-dimethoxyflavone inhibits H1N1 virus-induced ferroptosis by upregulating the expression of SLC7A11 and GPX4. 5-Hydroxy-6,7-dimethoxyflavone alleviates inflammatory responses and inhibits apoptosis by suppressing the activation of the NF-κB and p38 MAPK signaling pathways. 5-Hydroxy-6,7-dimethoxyflavone can be used in studies related to H1N1 influenza virus infection.
    5-Hydroxy-6,7-dimethoxyflavone
  • HY-152087
    DCZ19931
    		Inhibitor
    DCZ19931 is a potent multi-targeting kinase inhibitor. DCZ19931 has anti-angiogenic effects on ocular neovascularization. DCZ19931 also inhibits ERK1/2-MAPK and p38-MAPK signaling.
    DCZ19931
  • HY-183799
    GSI526
    		Inhibitor
    GSI526 is a IRAK4 PROTAC degrader (DC50=40.17 nM, Dmax=97%; THP-1) based on the VHL ubiquitin-proteasome system. GSI526 inhibits IRAK4-mediated NF-κB and MAPK inflammatory signaling pathways, and induces IRAK4 degradation in myeloid cells. GSI526 is applicable to inflammation-related research.
    GSI526
  • HY-P2358A
    PSMα3 TFA
    		Inhibitor
    PSMα3 TFA is an inhibitor of NF-κB p65 and p38 MAPK. PSMα3 TFA forms membrane pores and binds to residues of human insulin B chain to inhibit insulin aggregation. PSMα3 TFA forms α-type amyloid-like fibrils to exert cytotoxic effects, and acts as a functional amyloid virulence determinant of Staphylococcus aureus. PSMα3 TFA is applicable to research related to spondyloarthritis, rheumatoid arthritis, insulin-derived amyloidosis, and Staphylococcus aureus infection.
    PSMα3 TFA
  • HY-N3364
    Lucidone
    		Inhibitor
    Lucidone, an anti-inflammatory agent that can be isolated from the fruit of Lindera erythrocarpa Makino. Lucidone inhibits LPS-induced NO and PGE2 production in RAW 264.7 mouse macrophages. Lucidone also decreases TNF-α secretion, iNOS and COX-2 expression. Lucidone prevents NF-κB translocation and inhibits JNK and p38MAPK signals. Lucidone also has inhibitory activity against Dengue virus (DENV) (EC50=25 μM).
    Lucidone
  • HY-181031
    FGFR-IN-24
    		Inhibitor
    FGFR-IN-24 (Compound 8r) is a FGFR inhibitor. FGFR-IN-24 potently inhibits FGFR1/2/3 with IC50 values of 10.0, 6.9, and 30.2 nM, respectively. FGFR-IN-24 exhibits superior inhibitory activity toward FGFR1V561M, FGFR2V564F, and FGFR2N549K mutations with IC50 values of 6.8, 0.7, and 0.8 nM, respectively. FGFR-IN-24 induces Apoptosis. FGFR-IN-24 efficiently suppresses the phosphorylation of FGFR2 and its downstream signaling mediators (AKT and MAPK). FGFR-IN-24 demonstrates favorable antitumor efficacy in an RT112/84 bladder cancer xenograft model.
    FGFR-IN-24
  • HY-149921
    Antiangiogenic agent 3
    		Inhibitor
    Antiangiogenic agent 3 (compound 3) is a potent antiangiogenic agent. Antiangiogenic agent 3 is an inhibitor of human umbilical vein endothelial cells (HUVEC). Antiangiogenic agent 3 inhibits HUVEC migration and chemotactic motilities. Antiangiogenic agent 3 also decreases the gene expression of Src, cdc42, and MAPK.
    Antiangiogenic agent 3
  • HY-120485
    Raxofelast
    		Inhibitor
    Raxofelast (IRFI-016) is an antioxidant agent in various models of ischemia-reperfusion injury. Raxofelast has antiproliferative activity in H2O2-stimulated rat aortic smooth muscle cells. Raxofelast attenuates the activation of mitogen-activating protein kinase (MAPK), ERK kinase 1, 2 (MEK1,2) and protein kinase C (PKC) without affecting Ras expression.
    Raxofelast
  • HY-N0735R
    Phellodendrine chloride (Standard)
    		Inhibitor
    Phellodendrine chloride (Standard) is the analytical standard of Phellodendrine chloride (HY-N0735). Phellodendrine chloride is an orally active plant alkaloid. Phellodendrine chloride inhibits the proliferation of KRAS-mutated pancreatic cancer cells by suppressing macropinocytosis and glutamine metabolism, inducing ROS accumulation and mitochondrial apoptosis. Phellodendrine chloride promotes autophagy by activating the AMPK/mTOR pathway, alleviating intestinal damage in ulcerative colitis. Phellodendrine chloride can alleviate gouty arthritis by inhibiting the IL-6/STAT3 signaling pathway. Phellodendrine chloride suppresses allergic reactions by altering the conformation of MRGPRB3/MRGPRX2 protein, thereby inhibiting the activation of PKC and subsequent downstream MAPK and NF-κB signaling. Phellodendrine chloride inhibits the AKT/NF-κB pathway and down-regulates the expression of COX-2, thereby protecting zebrafish embryos from oxidative stress. Phellodendrine chloride has an anti-major depressive disorder (MDD) effect by down-regulating CHRM1, HTR1A, and the PI3K/Akt signaling pathway.
    Phellodendrine chloride (Standard)
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
p38 MAPK Isoform Comparison

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