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-169703
    SPA0355
    		Inhibitor 99.54%
    SPA0355 is a thiourea derivative that has antioxidant and anti-inflammatory properties. SPA0355 inhibits the RANKL (receptor activator of nuclear factor κB ligand) induced osteoclast formation in primary bone marrow-derived macrophages. SPA0355 also suppresses the activation of the MAPKs, Akt, and NF-κB pathways. Additionally, SPA0355 promotes osteoblast differentiation, increases alkaline phosphatase activity, and enhances mineral nodule formation. SPA0355 can protect ovariectomized mice from bone loss by stimulating osteoblast differentiation and inhibiting osteoclast resorption, making it useful for studying postmenopausal osteoporosis.
    SPA0355
  • HY-N7635
    Oleanolic acid 28-O-β-D-glucopyranoside
    		Inhibitor 99.42%
    Oleanolic acid 28-O-β-D-glucopyranoside (β-D-Glucopyranosyl oleanolate) is an orally active pentacyclic triterpenoid compound. Oleanolic acid 28-O-β-D-glucopyranoside has anti-inflammatory effects. In ulcerative colitis models, Oleanolic acid 28-O-β-D-glucopyranoside can inhibit the inflammatory response, enhance the intestinal epithelial barrier function, and modulate the gut microbiota. Its mechanism of action is related to the PI3K-AKT and MAPK signaling pathways. Oleanolic acid 28-O-β-D-glucopyranoside can be used in the research of diseases such as colitis.
    Oleanolic acid 28-O-β-D-glucopyranoside
  • HY-170879
    JD123
    		Inhibitor
    JD123 inhibits JNK1 activity and the expression of cJun (1-135). JD123 is a ATP-competitive p38-γ MAPK inhibitor, but not effect to ERK1, ERK2, or p38-α, p38-β or p38-δ..
    JD123
  • HY-B0898R
    Ceftiofur sodium (Standard)
    		Inhibitor
    Ceftiofur sodium (Standard) is the analytical standard of Ceftiofur sodium (HY-B0898). This product is intended for research and analytical applications. Ceftiofur sodium is a cell wall synthesis inhibitor that targets bacterial penicillin-binding proteins (PBPs) and has anti-inflammatory effects in endotoxemia. Ceftiofur sodium exerts bactericidal effects by inhibiting the synthesis of bacterial cell wall peptidoglycan, leading to bacterial cell lysis. Ceftiofur sodium 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 sodium (Standard)
  • HY-10256AR
    Adezmapimod hydrochloride (Standard)
    		Inhibitor
    Adezmapimod (hydrochloride) (Standard) is the analytical standard of Adezmapimod (hydrochloride). This product is intended for research and analytical applications. Adezmapimod (SB 203580; RWJ 64809) hydrochloride is a selective and ATP-competitive p38 MAPK inhibitor with IC50s of 50 nM and 500 nM for SAPK2a/p38 and SAPK2b/p38β2, respectively. Adezmapimod hydrochloride inhibits LCK, GSK3β and PKBα with IC50s of 100-500-fold higher than that for SAPK2a/p38. Adezmapimod hydrochloride does not disrupt JNK activity and is an autophagy and mitophagy activator.
    Adezmapimod hydrochloride (Standard)
  • HY-B1556
    Benzyl salicylate
    		Inhibitor 99.95%
    Benzyl salicylate (NSC 6647)?is a salicylic acid benzyl ester. It can be used as a fragrance additive or UV light absorber.
    Benzyl salicylate
  • HY-RS08108
    Mapk14 Mouse Pre-designed siRNA Set A
    		Inhibitor

    Mapk14 Mouse Pre-designed siRNA Set A contains three designed siRNAs for Mapk14 gene (Mouse), as well as a negative control, a positive control, and a FAM-labeled negative control.
    Mapk14 Mouse Pre-designed siRNA Set A
  • HY-N2072R
    Crocetin (Standard)
    		Inhibitor
    Crocetin (Standard) (TransCrocetin (Standard) ) is an aglycone of crocin. Crocetin (Standard) is orally active and brain-penetrant. Crocetin (Standard) shows strong NMDA receptor affinity and channel opening activity. Crocetin (Standard) can downregulate the proinflammatory cytokines and COX-2 exoression. Crocetin (Standard) can inhibit apoptosis and activation of MAPK. Crocetin (Standard) can delay delays brain and body aging. Crocetin (Standard) can be used for the researches of cancer, neurological disease and inflammation, such as cervical cancer and ischemia.
    Crocetin (Standard)
  • HY-N10913
    Chloranthalactone B
    		Inhibitor
    Chloranthalactone B, a lindenane-type sesquiterpenoid, is a nature product that could be isolated from Chinese medicinal herb Sarcandra glabra. Chloranthalactone B inhibits the production of inflammatory mediators by inhibiting the AP-1 and p38 MAPK pathways.
    Chloranthalactone B
  • HY-164350
    KRAS inhibitor-27
    		Inhibitor 98.27%
    KRAS inhibitor-27 (Compound 15h) is the inhibitor for KRAS. KRAS inhibitor-27 inhibits KRAS G12D/G12V mutated cells AsPC-1, SW620 and KRAS wildtype cell HT-29 with IC50 of 378, 0.6 and 3230 nM, respectively. KRAS inhibitor-27 inhibits ERK phosphorylation (IC50 in cell AsPC-1 and SW620 is 0.6 nM and 1 nM), reduces the expression of DUSP4, thereby inhibiting MAPK signaling pathway.
    KRAS inhibitor-27
  • HY-108645
    AL 8697
    		Inhibitor 99.92%
    AL 8697 is a specific and orally active p38α MAPK inhibitor with an IC50 of 6 nM. AL 8697 displays 14-fold greater inhibition of p38α compared to p38β (IC50=82 nM), and 300-fold selectivity for p38α over a panel of 91 kinases. Anti-inflammatory activity.
    AL 8697
  • HY-N7085R
    Citropten (Standard)
    		Inhibitor
    Citropten (Standard) is the analytical standard of Citropten. This product is intended for research and analytical applications. Citropten (5, 7-dimethoxycoumarin) is one of the coumarin derivatives. Citropten is an effective oral anticancer agent. Citropten has anti-proliferative activity against A2058 and B16 melanoma cells. Citropten exerts anti-inflammatory effects through the NFκB and MAPK signaling pathways. Citropten acts as an antidepressant through heat shock protein-70, monoamine oxidase-A and inhibition of apoptosis .
    Citropten (Standard)
  • HY-Y1322S
    Triphenyl phosphate-d15
    		Inhibitor 99.74%
    Triphenyl phosphate-d15 is the deuterium labeled Triphenyl phosphate. Triphenyl phosphate is an orally active, blood-brain barrier-permeable aryl organophosphate flame retardant and endocrine disruptor. Triphenyl phosphate disrupts mitochondrial dynamic balance through oxidative stress, induces excessive mitophagy and apoptosis, and ultimately leads to myocardial fibrosis. In the brain, Triphenyl phosphate activates the NF-κB inflammatory pathway by disrupting the gut microbiota, alters tryptophan metabolism and elevates neurotoxins, thereby inducing anxiety- and depression-like behaviors. In the skeletal and reproductive systems, Triphenyl phosphate inhibits osteoblast differentiation and induces germ cell apoptosis by suppressing the MAPK/ERK pathway and activating the JNK signal, respectively. In adipose and placental tissues, Triphenyl phosphate promotes lipid accumulation by activating the PI3K/AKT-PPARγ axis, and disrupts placental metabolism via the MAOA/ROS/NF-κB cascade, impairing neurodevelopment of offspring.
    Triphenyl phosphate-d<sub>15</sub>
  • HY-120349
    LL-Z1640-4
    		Inhibitor 99.0%
    LL-Z1640-4 is a potent p38/JNK signaling inhibitor. LL-Z1640-4 significantly diminishes p38 and JNK activation in HCC cells transfected with MLK4 siRNA. LL-Z1640-4 markedly attenuates ROS production induced by MLK4 knockdown. LL-Z1640-4 significantly reduces the apoptotic cells in HCC cells transfected with siMLK4.
    LL-Z1640-4
  • HY-114405
    SJFδ
    		Inhibitor
    SJFδ is a 10-atom linker PROTAC based on von Hippel-Lindau ligand. SJFδ degrades p38δ with a DC50 of 46.17 nM, but does not degrade p38α, p38β, or p38γ.
    SJFδ
  • HY-N0188R
    Esculin (Standard)
    		Inhibitor
    Esculin (Standard) is the analytical standard of Esculin. This product is intended for research and analytical applications. Esculin is a fluorescent coumarin glucoside, the active ingredient in ash bark. Esculin has antidiabetic effects, improves cognitive impairment in experimental diabetic nephropathy (DN) via the MAPK signaling pathway, and exerts antioxidant stress and anti-inflammatory effects. Esculin also has anticancer, antibacterial, antiviral, neuroprotective, antithrombotic, and therapeutic properties for eye diseases.
    Esculin (Standard)
  • HY-N2192
    Swertianolin
    		Inhibitor 99.54%
    Swertianolin is a xanthone glycoside. Swertianolin can be isolated from plants of the Gentianaceae family (e.g., Gentiana campestris and Swertia punicea). Swertianolin inhibits p38 phosphorylation and NF-κB activation, and reduces NO and ROS production. Swertianolin exhibits anti-Helicobacter pylori activity with an IC50 of 6.1 μM and a minimum bactericidal concentration of 91.7 μM. Swertianolin modulates immune function in sepsis. Swertianolin is useful in the research of diseases such as Alzheimer's disease, hepatitis B, Helicobacter pylori infection, and sepsis.
    Swertianolin
  • HY-N1365R
    Isoscopoletin (Standard)
    		Inhibitor
    Isoscopoletin (Standard) is the analytical standard of Isoscopoletin. This product is intended for research and analytical applications. Isoscopoletin (6-Hydroxy-7-methoxycoumarin) is an active constituent in Artemisia argyi leaves. Isoscopoletin shows substantial inhibition against cell proliferation, with IC50s of 4.0 μM and 1.6 μM for human CCRF-CEM leukaemia cells and multidrug resistant subline CEM/ADR5000, respectively. Isoscopoletin (6-Hydroxy-7-methoxycoumarin) possesses inhibitory activity against HBV replication. Isoscopoletin exhibits anti-inflammatory activity through inhibition of MAPK/NF-κB/STAT/AKT signaling pathway.
    Isoscopoletin (Standard)
  • HY-145564A
    Emprumapimod hydrochloride
    		Inhibitor 98.0%
    Emprumapimod (PF-07265803) hydrochloride is an orally active and selective inhibitor of p38α MAPK. Emprumapimod hydrochloride can be used for the research of dilated cardiomyopathy and acute inflammatory pain.
    Emprumapimod hydrochloride
  • HY-N0430
    Coptisine
    		Inhibitor
    Coptisine is an orally active and brain-penetrant alkaloid found in Coptis chinensis. Coptisine is a reversible, uncompetitive IDO inhibitor with a Ki of 5.8 μM and an IC50 of 6.3 μM. Coptisine suppresses neuroinflammation, reduces Aβ plaque burden and shows neuroprotective activity. Coptisine shows anti-inflammation activity by blocking NF-κB, MAPK, and PI3K/Akt activation. Coptisine inhibits cancer cells proliferation, induces DNA damage, G2/M phase cell cycle arrest, apoptosis, ROS production and mitochondrial dysfunction. Coptisine inhibits Rho/ROCK pathway activation, reduces arrhythmia, limits cardiac injury marker release, reduces infarct size, and preserves cardiac function in rat myocardial ischemia/reperfusion models. Coptisine downregulates HMGCR and upregulates LDLR and CYP7A1 to modulate cholesterol metabolism, reduces abnormal serum lipid levels, and promotes fecal bile acid excretion. Coptisine can be used for the research of cancer, hypercholesterolemia, Alzheimer’s disease, inflammatory disorders and cardiovascular disease.
    Coptisine
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
p38 MAPK Isoform Comparison

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