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-N5073
    Vitexin-4''-O-glucoside
    		Inhibitor 99.86%
    Vitexin-4''-O-glucoside (4''-O-Glucosylvitexin) is an orally active natural flavonoid component with multiple pharmacological effects including antioxidation, anti-inflammation, cytoprotection and anti-apoptosis. Vitexin-4''-O-glucoside regulates the MAPK signaling pathway by downregulating the phosphorylation levels of JNK and p38, thereby blocking endoplasmic reticulum stress responses. Vitexin-4''-O-glucoside alleviates oxidative stress by reducing MDA content and upregulating the activities of SOD and CAT, attenuates inflammation by downregulating the expressions of inflammatory factors TNF-α, IL-1β and IL-6, and also reduces LDH release and inhibits caspase-3 activation. Vitexin-4''-O-glucoside effectively improves drug-induced acute liver injury and exerts significant protective effects against myocardial hypoxia/reoxygenation injury. Vitexin-4''-O-glucoside can be used in studies on acute liver injury, cardiovascular diseases and myocardial hypoxia-reoxygenation injury.
    Vitexin-4''-O-glucoside
  • HY-N0208
    Kaempferol-3-O-glucorhamnoside
    		Inhibitor 99.64%
    Kaempferol-3-O-glucorhamnoside, a flavonoid derived from plant Thesium chinense Turcz, inhibits inflammatory responses via MAPK and NF-κB pathways in vitro and in vivo.
    Kaempferol-3-O-glucorhamnoside
  • HY-111954
    (+)-Erinacin A
    		Inhibitor 99.81%
    (+)-Erinacin A (Erinacine A) is a cyanoditerpenoid isolated from Hericium erinaceus with anticancer, anti-inflammatory and neuroprotective activities. (+)-Erinacin A can induce cancer cell death by activating extrinsic and intrinsic apoptosis pathways. (+)-Erinacin A can also inhibit the expression of NO synthase (iNOS) and the production of nitrotyrosine to exert inflammatory and neuroprotective effects, thereby reducing ischemic brain damage.
    (+)-Erinacin A
  • HY-N4090
    Vicenin 3
    		Inhibitor 99.90%
    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
  • HY-W166297
    Esculin sesquihydrate
    		Inhibitor 98.80%
    Esculin sesquihydrate, a fluorescent coumarin glucoside, is an active ingredient of ash bark. Esculin sesquihydrate ameliorates cognitive impairment in experimental diabetic nephropathy (DN), and exerts anti?oxidative stress and anti?inflammatory effects, via the MAPK signaling pathway.
    Esculin sesquihydrate
  • HY-N1195
    Sugiol
    		Inhibitor 99.88%
    Sugiol is an abietane diterpenoid, can be isolated from Calocedrus formosana bark. Sugiol has anti-inflammatory activity, could effectively reduce intracellular reactive oxygen species (ROS) production in lipopolysaccharide (LPS)-stimulated macrophages.
    Sugiol
  • HY-N6576
    Hellebrigenin
    		Inhibitor 99.69%
    Hellebrigenin is an inhibitor that selectively targets the MAPK signaling pathway (ERK, p38, JNK) and XIAP, and can inhibit Akt expression and phosphorylation. Hellebrigenin can activate endogenous apoptosis pathways (such as mitochondrial membrane potential disruption, Caspase family activation, PARP cleavage), downregulate anti-apoptotic proteins (Bcl-2, Bcl-xL) and upregulate pro-apoptotic proteins (Bax, Bak). Hellebrigenin can also induce DNA double-strand breaks to activate the ATM pathway. Hellebrigenin can inhibit tumor cell proliferation and clone formation, and is mainly used in the study of oral squamous cell carcinoma, liver cancer and other cancers.
    Hellebrigenin
  • HY-125980
    LX-3
    		Inhibitor 98.08%
    LX-3 is a selective activator of the p38 MAPK signaling pathway and activates EGFP reporter genes that are silenced by DNA methylation, such as TNF, EGR1, LY6K, and ISG20.
    LX-3
  • HY-N10303
    Withangulatin A
    		Inhibitor 99.76%
    Withangulatin A is the inhibitor for COX-2. Withangulatin A inhibits MAPK, NF-κB, Akt/mTOR/p70S6K pathway, exhibits antitumor, anti-inflammatory and trypanocidal activities.
    Withangulatin A
  • HY-N8593
    Undecane
    		Inhibitor 99.66%
    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
  • HY-159799
    p38α inhibitor 5
    		Inhibitor 98.69%
    p38α inhibitor 5 (compound 1) is a PROTAC-type target protein ligand targeting p38 and can be used to synthesize NR-11c (HY-159798).
    p38α inhibitor 5
  • HY-N0854
    Alisol F
    		Inhibitor 99.89%
    Alisol F is a protostane-type triterpenoid with anti-inflammatory and anti-hepatitis B virus activities. Alisol F inhibits LPS (HY-D1056)-induced phosphorylation of ERK, JNK, p38, STAT3 and NF-κB (p65), suppresses the production of NO, IL-6, TNF-α and IL-1β, and also downregulates the levels of iNOS and COX-2. Alisol F reduces the serum alanine aminotransferase and aspartate aminotransferase levels in mice with acute liver injury and ameliorates their liver pathological damage.
    Alisol F
  • HY-163299
    pan-KRAS-IN-5
    		Inhibitor
    pan-KRAS-IN-5 is a pan-KRAS translation inhibitor by targeting 5′-UTR RNA G-quadruplexes (rG4s). pan-KRAS-IN-5 strongly binds to and stabilizes KRAS rG4s, inhibits KRAS translation, and blocks the MAPK and PI3K-AKT pathways. pan-KRAS-IN-5 induces cell cycle arrest, prompts apoptosis in KRAS-driven cancer cells. pan-KRAS-IN-5 inhibits tumor growth and KRAS expression in KRAS-mutant xenograft. KRAS-IN-5 can be used for KRAS-driven cancer research.
    pan-KRAS-IN-5
  • HY-177511
    KRAS G12D-IN-30
    		Inhibitor 99.38%
    KRAS G12D-IN-30 (Compound 4) is a KRAS inhibitor. KRAS G12D-IN-30 inhibits the activation of the downstream MAPK signaling cascade (Raf1-MEK-ERK) by blocking the activity of the KRAS G12 mutant. KRAS G12D-IN-30 can be used for the research of cancer.
    KRAS G12D-IN-30
  • HY-B1556S
    Benzyl salicylate-d4
    		Inhibitor 99.01%
    Benzyl salicylate-d4 (NSC 6647-d4) is the deuterium labeled Benzyl salicylate (HY-B1556). Benzyl salicylate (NSC 6647)?is a salicylic acid benzyl ester. It can be used as a fragrance additive or UV light absorber.
    Benzyl salicylate-d<sub>4</sub>
  • HY-108647
    EO 1428
    		Inhibitor 99.65%
    EO 1428 is a highly specific inhibitor of p38 of the aminobenzophenone class. EO 1428 (1 μM ) markedly attenuates LPS-induced tumor necrosis factor α-converting enzyme (TACE) activity up-regulation.
    EO 1428
  • HY-10261R
    Afatinib (Standard)
    		Inhibitor
    Afatinib (Standard) is the analytical standard of Afatinib. This product is intended for research and analytical applications. Afatinib (BIBW 2992) 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 can be used for the research of esophageal squamous cell carcinoma (ESCC), non-small cell lung cancer (NSCLC) and gastric cancer.
    Afatinib (Standard)
  • HY-110103
    ML3403
    		Inhibitor 99.28%
    ML3403 is a potent p38 MAPK inhibitor with an IC50 of 0.38 μM.
    ML3403
  • HY-126941
    Hecogenin acetate
    		Inhibitor 98.57%
    Hecogenin acetate is an orally active steroid saponin aglycone with extensive biological activities. Hecogenin acetate inhibits the phosphorylation of NF-κB and p38 MAPK signaling pathways, antagonizes TRPA1/TRPM8 channels, inhibits the production of pro-inflammatory cytokines, and has anti-inflammatory and analgesic effects. Hecogenin acetate inhibits the production of ROS and the activation of NLRP3 inflammasome; downregulates the expression of MMP-2, and has neuroprotective and anti-tumor activities. Hecogenin acetate enhances gastric mucosal defense and promotes ulcer healing. Hecogenin acetate can be used in combination with certain antibiotics to regulate bacterial efflux pumps and restore antibiotic sensitivity.
    Hecogenin acetate
  • HY-N8251
    Cyclocurcumin
    		Inhibitor 99.48%
    Cyclocurcumin is a potent p38α inhibitor. Cyclocurcumin shows antirheumatic, antivasoconstrictive and antioxidant activities.
    Cyclocurcumin
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
p38 MAPK Isoform Comparison

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