1. MAPK/ERK Pathway
  2. p38 MAPK

p38 MAPK

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 Related Products (76):

Cat. No. Product Name Effect Purity
  • HY-10256
    SB 203580 Inhibitor 99.92%
    SB 203580 (RWJ 64809) is a selective and ATP-competitive p38 MAPK inhibitor with IC50s of 50 nM and 500 nM for SAPK2a/p38 and SAPK2b/p38β2, respectively. SB 203580 inhibits LCK, GSK3β and PKBα with IC50s of 100-500-fold higher than that for SAPK2a/p38. SB 203580 does not disrupt JNK activity and is an autophagy and mitophagy activator[1].
  • HY-10295
    SB 202190 Inhibitor 99.89%
    SB 202190 is a selective p38 MAP kinase inhibitor with IC50s of 50 nM and 100 nM for p38α and p38β2, respectively. SB 202190 binds to the ATP pocket of the active recombinant human p38 kinase with a Kd of 38 nM. SB 202190 has anti-cancer activity and rescued memory deficits[1][2][3].
  • HY-10320
    Doramapimod Inhibitor 99.88%
    Doramapimod (BIRB 796) is an orally active, highly potent p38 MAPK inhibitor, which has an IC50 for p38α=38 nM, for p38β=65 nM, for p38γ=200 nM, and for p38δ=520 nM. Doramapimod has picomolar affinity for p38 kinase (Kd=0.1 nM). Doramapimod also inhibits B-Raf with an IC50 of 83 nM[1][2].
  • HY-125817
    BI-3406 Inhibitor 99.51%
    BI-3406 (compound I-6) is an orally active, highly potent and selective inhibitor of the interaction between KRAS and Son of Sevenless 1 (SOS1) with an IC50 of 6 nM. BI-3406 potently reduces the formation of GTP-loaded KRAS, and inhibits MAPK pathway signaling. BI-3406 has anticancer activity[1][2].
  • HY-10402
    Losmapimod Inhibitor
    Losmapimod (GSK-AHAB) is a selective, potent, and orally active p38 MAPK inhibitor with pKis of 8.1 and 7.6 for p38α and p38β, respectively[1].
  • HY-P2319A
    OVA-E1 peptide TFA Activator
    OVA-E1 peptide TFA, is an antagonist variant of SIINFEKL [OVA (257-264). OVA-E1 peptide, activates the p38 and JNK cascades similarly in mutant and wild-type thymocytes[1].
  • HY-P2319
    OVA-E1 peptide Activator
    OVA-E1 peptide, is an antagonist variant of SIINFEKL [OVA (257-264). OVA-E1 peptide, activates the p38 and JNK cascades similarly in mutant and wild-type thymocytes[1].
  • HY-15509A
    Semapimod tetrahydrochloride
    Semapimod tetrahydrochloride (CNI-1493), an inhibitor of proinflammatory cytokine production, can inhibit TNF-α, IL-1β, and IL-6. Semapimod tetrahydrochloride inhibits TLR4 signaling (IC50≈0.3 μM). Semapimod tetrahydrochloride inhibits p38 MAPK and nitric oxide production in macrophages. Semapimod tetrahydrochloride has potential in a variety of inflammatory and autoimmune disorders[1][2][3].
  • HY-N0674A
    Dehydrocorydaline chloride Activator 98.64%
    Dehydrocorydaline chloride (13-Methylpalmatine chloride) is an alkaloid isolated from traditional Chinese herb Corydalis yanhusuo W.T. Wang. Dehydrocorydaline regulates protein expression of Bax, Bcl-2; activates caspase-7, caspase-8, and inactivates PARP[1]. Dehydrocorydaline chloride elevates p38 MAPK activation. Anti-inflammatory and anti-cancer activities.[2]. Dehydrocorydaline chloride shows strong anti-malarial effects (IC50 =38 nM), and low cytotoxicity (cell viability > 90%) using P. falciparum 3D7 strain[3].
  • HY-13241
    Ralimetinib dimesylate Inhibitor 99.98%
    Ralimetinib dimesylate (LY2228820 dimesylate) is a selective, ATP-competitive inhibitor of p38 MAPK α/β with IC50s of 5.3 and 3.2 nM, respectively. Ralimetinib (LY2228820) selectively inhibits phosphorylation of MK2 (Thr334), with no effect on phosphorylation of p38a MAPK, JNK, ERK1/2, c-Jun, ATF2, or c-Myc.
  • HY-11068
    SB 239063 Inhibitor 99.53%
    SB 239063 is a potent, selective and orally active p38 MAPK inhibitor, exhibits an IC50 of 44 nM for recombinant purified human p38α, with equipotent inhibitory activity against p38α and p38β. SB 239063 has no effect on p38γ or p38δ. With anti-asthma activity and also be used to enhance memory which is impaired due to aging or medical conditions, such as, AD[1][2].
  • HY-10256A
    SB 203580 hydrochloride Inhibitor 99.71%
    SB 203580 hydrochloride (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. SB 203580 hydrochloride inhibits LCK, GSK3β and PKBα with IC50s of 100-500-fold higher than that for SAPK2a/p38. SB 203580 hydrochloride is an autophagy and mitophagy activator[1].
  • HY-N0168
    Hesperetin Activator 98.75%
    Hesperetin is a natural flavanone, and acts as a potent and broad-spectrum inhibitor against human UGT activity. Hesperetin induces apoptosis via p38 MAPK activation.
  • HY-10456
    TAK-715 Inhibitor 99.89%
    TAK-715 is an orally active and potent p38 MAPK inhibitor with IC50s of 7.1 nM, 200 nM for p38α and p38β, respectively. TAK-715 inhibits casein kinase I (CK1δ/ε) to regulate activation of Wnt/β-catenin signaling. TAK-715 shows good significant efficacy in a rat arthritis model[1][2].
  • HY-10578
    PD 169316 Inhibitor 98.00%
    PD 169316 is a potent, cell-permeable and selective p38 MAP kinase inhibitor, with IC50 of 89 nM. PD169316 selectively inhibits the kinase activity of the phosphorylated p38 without hindering upstream kinases to phosphorylate p38. PD169316 shows antiviral activity against Enterovirus71. PD169316 shows antiviral activity against Enterovirus71.
  • HY-16782
    Pexmetinib Inhibitor 99.90%
    Pexmetinib is a potent Tie-2 and p38 MAPK dual inhibitor, with IC50s of 1 nM, 35 nM and 26 nM for Tie-2, p38α and p38β, respectively, and can be used in the research of acute myeloid leukemia.
  • HY-10406
    Talmapimod Inhibitor 98.73%
    Talmapimod (SCIO-469) is an orally active, selective, and ATP-competitive p38α inhibitor with an IC50 of 9 nM. Talmapimod shows about 10-fold selectivity over p38β, and at least 2000-fold selectivity over a panel of 20 other kinases, including other MAPKs[1][2][3].
  • HY-10403
    PH-797804 Inhibitor 98.59%
    PH-797804 is a ATP-competitive, selective p38α/p38β inhibitor (IC50=26 nM and Ki=5.8 nM for p38α; Ki=40 nM for p38β) and does not inhibit JNK2.
  • HY-10401
    VX-702 Inhibitor 99.75%
    VX-702 is a highly selective inhibitor of p38α MAPK, 14-fold higher potency against the p38α versus p38β.
  • HY-10404
    Dilmapimod Inhibitor 99.56%
    Dilmapimod (SB-681323) is a potent p38 MAPK inhibitor that potentially suppresses inflammation in chronic obstructive pulmonary disease.