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-161462
    ERK2/p38α MAPK-IN-1
    		Inhibitor
    ERK2/p38α MAPK-IN-1 (Compound 1, In silico Hit-2) is a potent and selective ERK2 and p38α MAPK inhibitor, with an IC50 of 82 μM for ERK2. ERK2/p38α MAPK-IN-1 binds to the allosteric site of ERK2 and p38α MAPK in distinct manners. ERK2/p38α MAPK-IN-1 can be used for the research of type 2 diabetes.
    ERK2/p38α MAPK-IN-1
  • HY-119138
    R-130823
    		Inhibitor
    R-130823 is an orally active, highly selective p38α inhibitor with an IC50 of 22 nM against p38α, an IC50 of 820 nM against p38β, and no activity against p38γ or p38δ. R-130823 downregulates downstream cartilage degradation and inflammatory mediators, and inhibits the release of MMP-13, MMP-1 and PGE2. R-130823 reduces hind paw swelling, improves hyperalgesia, and blocks arthritis progression. R-130823 is applicable to research related to osteoarthritis and rheumatoid arthritis.
    R-130823
  • HY-101145
    CK37
    		Inhibitor
    CK37 is a competitive choline kinase-α inhibitor. CK37 inhibits purified recombinant human choline kinase-α activity. CK37 suppresses MAPK and PI3K/AKT signaling, disrupts actin cytoskeletal organization. CK37 diminishs activating phosphorylations of ERK. CK37 exhibits anticancer activity against cervical cancer, melanoma, Lewis lung carcinoma, lung adenocarcinoma, breast cancer, and leukemia.
    CK37
  • HY-N9980
    Antcin K
    		Inhibitor
    Antcin K is a selective inhibitor targeting the PI3K/Akt, NF-κB, MEK1/2-ERK, p38 and AP-1 pathways. Antcin K upregulates IL-10 expression, thereby inhibiting the production of pro-inflammatory factors, blocking monocyte adhesion, reducing tissue damage, and promoting myogenesis. Antcin K has significant anti-inflammatory, anti-damage and tissue protective activities. Antcin K is mainly used in the research of inflammation-related diseases such as periodontitis, rheumatoid arthritis, and skeletal muscle injury.
    Antcin K
  • HY-177762
    Pan-RAS-IN-8
    		Inhibitor
    Pan-RAS-IN-8 (Page 152, third row, third from left to right) is a pan-RAS inhibitor. Pan-RAS-IN-8 blocks the binding of RAS to downstream effector molecules by forming a ternary complex, thereby inhibiting the activation of the MAPK and PI3K-AKT signaling pathways. Pan-RAS-IN-8 can be used for the research of cancer, inflammatory diseases and autoimmune diseases.
    Pan-RAS-IN-8
  • HY-RS08099
    Mapk11 Mouse Pre-designed siRNA Set A
    		Inhibitor

    Mapk11 Mouse Pre-designed siRNA Set A contains three designed siRNAs for Mapk11 gene (Mouse), as well as a negative control, a positive control, and a FAM-labeled negative control.
    Mapk11 Mouse Pre-designed siRNA Set A
  • HY-182579
    CBS-3408
    		Inhibitor
    CBS-3408 is an orally active p38α MAPK inhibitor. CBS-3408 inhibits the release of TNFα and IL-1β. CBS-3408 reduces the disease severity of arthritis in mice. CBS-3408 inhibits TNFα release in a rat endotoxemia model. CBS-3408 can be used in studies related to endotoxemia and arthritis.
    CBS-3408
  • HY-P11250
    HVF18-a3-d
    		Inhibitor
    HVF18-a3-d is an antimicrobial peptide. HVF18-a3-d reduces NO production. HVF18-a3-d inhibits the production of TNF-α and IL-6, reduces ROS production, and suppresses the TLR4 signaling pathway, as well as LPS-induced phosphorylation of ERK, JNK, and p38 MAPK. HVF18-a3-d exhibits antimicrobial activity against a variety of bacteria by disrupting their outer and inner membranes. HVF18-a3-d protects mice from fatal septic shock induced by Acinetobacter baumannii resistant to Carbapenem. HVF18-a3-d shows anti-inflammatory and antioxidant effects.
    HVF18-a3-d
  • HY-149850
    p38 Kinase inhibitor 5
    		Inhibitor
    p38 Kinase inhibitor 5 (AA6) is a potent p38 kinase inhibitor with an IC50 of 403.57 nM. p38 Kinase inhibitor 5 has anti-inflammatory activity.
    p38 Kinase inhibitor 5
  • HY-178169
    ETI60
    		Inhibitor 99.51%
    ETI60 is an orally active, selective TLR inhibitor that targets the nucleoside-binding Site I on TLR7 (IC50 = 0.68 μM) and TLR9 (IC50 = 0.12 μM), sparing surface TLRs (including TLR1/TLR2, TLR2/TLR6, TLR4 and TLR5). ETI60 potently inhibits endosomal TLR-mediated pro-inflammatory signaling with nanomolar activity in cellular, biophysical and in vivo assays. ETI60 modulates the expression of genes associated with inflammation. ETI60 effectively ameliorates symptoms in mouse models of psoriasis, and systemic lupus erythematosus (SLE). ETI60 can be used for autoimmune and inflammatory diseases research.
    ETI60
  • HY-N0404R
    Sinigrin (Standard)
    		Inhibitor
    Sinigrin (Standard) (Allyl-glucosinolate (Standard)) is the analytical standard of Sinigrin (HY-N0404). This product is intended for research and analytical applications. Sinigrin (Allyl-glucosinolate) is an orally active glucosinolate found in cruciferous plants. Sinigrin possesses multiple activities such as anti-cancer, antibacterial, antifungal, anti-inflammatory, antioxidant, and inhibition of fat synthesis. Sinigrin can be used in the research of tumors, inflammatory, and metabolic diseases.
    Sinigrin (Standard)
  • HY-180244
    P2L-003
    		Inhibitor
    P2L-003 is a selective PAR2 antagonist with an IC50 of 0.62 μM in HT-29 cells. P2L-003 blocks PAR2-mediated Ca2+ mobilization without affecting PAR1, PAR4, or ATP-mediated signaling and dose-dependently suppresses the downstream MAPK signaling cascades, including ERK1/2 and p38 phosphorylation. P2L-003 can be used for colon cancer research.
    P2L-003
  • HY-111164
    CBS-3595
    		Inhibitor
    CBS-3595 is a dual inhibitor of p38 MAP kinase and phosphodiesterase 4 with anti-inflammatory and anti-allodynic activities. CBS-3595 reduces the production of the proinflammatory cytokine IL-6 and increases the levels of the anti-inflammatory cytokine IL-10 in rats. CBS-3595 reduces paw oedema formation in the Complete Freund’s adjuvant (CFA) (HY-153808)-induced arthritis rat model. CBS-3595 is promising for research of autoimmune diseases.
    CBS-3595
  • HY-100113A
    Buloxibutid hydrochloride
    		Inhibitor
    Buloxibutid (AT2 receptor agonist C21) hydrochloride is an orally active, selective angiotensin II type 2 receptor (AT2R) agonist, with a Ki value of 0.4 nM for porcine AT2R. Buloxibutid hydrochloride exerts vasodilatory, anti-inflammatory, antifibrotic (promoting the expression of collagenase MMP-13) and tissue repair effects mainly by activating the NO/cGMP pathway, inhibiting the pro-proliferative MAPK signaling, and suppressing the pro-fibrotic TGF-β/Smad pathway and inflammatory NF-κB pathway. Buloxibutid hydrochloride can be used in research related to idiopathic pulmonary fibrosis, hypertension, systemic sclerosis and other conditions.
    Buloxibutid hydrochloride
  • HY-N0591R
    Dehydrocostus Lactone (Standard)
    		Inhibitor
    Dehydrocostus Lactone (Standard) ((-)-Dehydrocostus lactone (Standard)) is the analytical standard of Dehydrocostus Lactone (HY-N0591). This product is intended for research and analytical applications. Dehydrocostus Lactone is a natural sesquiterpene that can be isolated from Saussurea lappa. Dehydrocostus Lactone has multiple activities such as anti-inflammatory, antibacterial, anti-tumor, and immunomodulatory effects. Dehydrocostus Lactone has an MIC of 2 µg/mL against Mycobacterium tuberculosis. Dehydrocostus Lactone can also inhibit the killing activity of cytotoxic T lymphocytes and induce apoptosis in tumor cells.
    Dehydrocostus Lactone (Standard)
  • HY-13703
    Nimustine
    		Inhibitor
    Nimustine is an alkylating agent, which induces DNA double-strand breaks (DSBs) and inter-strand crosslinks (ICLs), thereby activating the DNA damage response (DDR) signaling pathway. Nimustine activates p38 MAPK/JNK signaling pathway, and exhibits antitumor activity.
    Nimustine
  • HY-136794
    SB-284851-BT
    		Inhibitor
    SB-284851-BT is an inhibitor of BRD4/p38α/BRDT. SB-284851-BT inhibits BRD4-BD1 (IC50=1.7 µM), p38α (Kd=0.47 nM), BRDT (1) (IC50=18 µM) and BRD4 (1)(IC50=3.7 µM). SB-284851-BT reduces IL-8 production by inhibiting p38α, as well as inhibiting BRD4 to down-regulates c-Myc and NF-κB gene pathways in cancer. SB-284851-BT can combined with the bromine domain and extra terminal (BET).
    SB-284851-BT
  • HY-163429
    J-1149
    		Inhibitor
    J-1149 is a potent ALK5 inhibitor, with an IC50 value of 0.017 μM. J-1149 also shows weak p38α MAP kinase inhibitory activity, with an IC50 value of 0.435 μM. J-1149 can be used for liver fibrosis research.
    J-1149
  • HY-18759
    BMS-751324
    		Inhibitor
    BMS-751324 is a p38α MAPK inhibitor. BMS-751324 equips a precursor of carbamyl-methyl linkage, containing esters and phosphate functional groups derived from hydroxyphenylacetic acid (HPA). BMS-751324 effectively inhibits foot swelling and LPS-induced TNFα production in an arthritic rat model.
    BMS-751324
  • HY-P10852
    TAT-MKK3b
    		Inhibitor
    TAT-MKK3b is a p38 peptide inhibitor. TAT-MKK3b can inhibit p38 phosphorylation. TAT-MKK3b has renal targeting, ROS-scavenging, and ferroptosis-mitigating capabilities. TAT-MKK3b improves acute kidney injury and its progression to chronic kidney disease.
    TAT-MKK3b
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
p38 MAPK Isoform Comparison

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