EVT801 is an orally active and selective inhibitor of VEGFR-3 (IC50=11 nM), which has antitumor effects. EVT801 inhibits not only VEGF-C-induced human endothelial cell proliferation, but also tumor (lymphatic) angiogenesis in tumor mouse models. EVT801 can reduce tumor hypoxia, immunosuppressive cytokines (CCL4, CCL5) and myeloid derived suppressor cells (MDSC) production. EVT801 has synergistic effect with immune checkpoint therapy (ICT), which improves ICT response rate and has better inhibitory effect on cancer mouse models[1].
Pamoic acid disodium is a potent GPR35 agonist with an EC50 value of 79 nM. Pamoic acid disodium induces GPR35 internalization and activates ERK1/2 with EC50 values of 22 nM and 65 nM, respectively. Pamoic acid disodium potently recruits β-arrestin2 to GPR35 and has an antinociceptive effect[1].
H-Ile-Lys-Val-Ala-Val-OH is one of the most potent active sites of laminin-1. H-Ile-Lys-Val-Ala-Val-OH promotes cell adhesion, neurite outgrowth, and tumor growth. H-Ile-Lys-Val-Ala-Val-OH stimulates BMMSC population growth and proliferation by activating MAPK/ERK1/2 and PI3K/Akt signalling pathways[1][2].
Hypothemycin, a fungal polyketide, is a multikinase inhibitor with Kis of 10/70 nM, 17/38 nM, 90 nM, 900 nM/1.5 μM, and 8.4/2.4 μM for VEGFR2/VEGFR1, MEK1/MEK2, FLT-3, PDGFRβ/PDGFRα, and ERK1/ERK2, respectively[1][2].
NMDAR/TRPM4-IN-2 free base (compound 8) is a potent NMDAR/TRPM4 interaction interface inhibitor. NMDAR/TRPM4-IN-2 free base shows neuroprotective activity. NMDAR/TRPM4-IN-2 free base prevents NMDA-induced cell death and mitochondrial dysfunction in hippocampal neurons, with an IC50 of 2.1 μM. NMDAR/TRPM4-IN-2 free base protects mice from MCAO-induced brain damage and NMDA-induced retinal ganglion cell loss[1].
ERK-IN-2 free base is a ERK2 inhibitor with an IC50 value of 1.8 nM. ERK-IN-2 free base might lead to off-target toxicity and/or off-target activity at dose >10 μM[1].
Albanol B is an arylbenzofuran derivative which can be isolated from mulberries. Albanol B exhibits anti-Alzheimer's disease, anti-bacterial and antioxidant activities. Albanol B inhibits cancer cells proliferation, down-regulates CDK1 expression. Albanol B also induces cell cycle arrest at G2/M and apoptosis. And Albanol B induces mitochondrial ROS production and increases the phosphorylation levels of AKT and ERK1/2[1].
ERK5-IN-2 is an orally active, sub-micromolar, selective ERK5 inhibitor with IC50s of 0.82 μM, 3 μM for ERK5 and ERK5 MEF2D, respectively. ERK5-IN-2 does not interact with the BRD4 bromodomain. ERK5-IN-2 suppresses both tumor xenograft growth and basic fibroblast growth factor (bFGF) driven Matrigel plug angiogenesis[1].
Larixol is an fMLP inhibitor and also inhibits Src kinase, ERK1/2, p38 and AKT phosphorylation signals in immune regulation. Larixol can interfere with the interaction between the βγ subunit of the fMLP receptor Gi protein and its downstream molecules, thereby inhibiting fMLP-induced respiratory burst. Larixol inhibits fMLP (0.1 μM)-induced superoxide anion production (IC50: 1.98 μM), cathepsin G release (IC50: 2.76 μM), and chemotaxis. Larixol improves neutrophil hyperactivation and reduces inflammation or tissue damage. A series of Larixol derivatives were found to have inhibitory effects on FSGS-related TRPC6 functional mutants[1][2].
Longdaysin is a CK1α, CK1δ, and extracellular signal-regulated kinase 2 (ERK2) inhibitor with IC50s of 5.6 µM, 8.8 µM, and 52 µM, respectively[1][2].
Ulixertinib (VRT752271) is a reversible, ATP-competitive inhibitor of ERK1 and ERK2 kinases, with IC50 of <0.3 nM against ERK2.
CHPG sodium salt is a selective mGluR5 agonist, and attenuates SO2-induced oxidative stress and inflammation through TSG-6/NF-κB pathway in BV2 microglial cells[1]. CHPG sodium salt protects against traumatic brain injury (TBI) in vitro and in vivo by activation of the ERK and Akt signaling pathways.[2].
trans-Zeatin-d5 is deuterium labeled trans-Zeatin. trans-Zeatin is a plant cytokinin, which plays an important role in cell growth, differentiation, and division; trans-Zeatin also inhibits UV-induced MEK/ERK activation.
ERK-IN-4 is an ERK inhibitor binds preferentially to ERK2 with a Kd of 5 μM. ERK-IN-4 specificity inhibits ERK Rsk-1 and Elk-1 phosphorylation. ERK-IN-4 has little effect on ERK protein phosphorylation by its upstream activator MEK1/2[1].
MAPK-IN-1 (Compound 2) is a MAPK signaling pathway inhibitor. MAPK-IN-1 exhibits AChE inhibitory activity with an IC50 of 23.84 μM. MAPK-IN-1 shows anti-neuroinflammatory and neuroprotective activity and can be used for Alzheimer's disease research[1].
NMDAR/TRPM4-IN-2 (compound 8) is a potent NMDAR/TRPM4 interaction interface inhibitor. NMDAR/TRPM4-IN-2 shows neuroprotective activity. NMDAR/TRPM4-IN-2 prevents NMDA-induced cell death and mitochondrial dysfunction in hippocampal neurons, with an IC50 of 2.1 μM. NMDAR/TRPM4-IN-2 protects mice from MCAO-induced brain damage and NMDA-induced retinal ganglion cell loss[1].
Theaflavin 3,3'-digallate (TF3), the typical pigment in black tea, is a good antitumor agent. Theaflavin 3,3'-digallate is generally regarded as the effective component for the inhibitory effects against carcinogenesis without adverse side effects by affecting multiple signal transduction pathways, such as upregulating p53 and p21, inhibiting phosphorylation of the cell survival protein Akt and MAPK pathway, downregulation of NF-κB, shifting the ratio between pro-/antiapoptotic proteins. Theaflavin 3,3'-digallate causes a rapid and sustained decrease in phospho-ERK1/2 and -MEK1/2 protein expression. Theaflavin 3,3'-digallate inhibits HCT116 cell growth with an IC50 of 17.26 μM[1].
SCH772984 potently inhibits ERK1 and ERK2 activity with IC50s of 4 and 1 nM, respectively.
6-O-Isobutyrylbritannilactone is a natural melanogenesis inhibitor. 6-O-Isobutyrylbritannilactone, a sesquiterpene, can be isolated from the flowers of Inula britannica. 6-O-Isobutyrylbritannilactone inhibits IBMX (HY-12318)-induced melanin production in B16F10 cells. 6-O-Isobutyrylbritannilactone also regulates ERK, PI3K/AKT, and CREB, shows antimelanogenic activity in zebrafish embryos models[1].
ERK1/2 inhibitor 6 is a potent inhibitor of ERK1/2. Mitogen-activated protein kinase (MAPK) plays an extremely important role in the signal transduction pathway, and extracellular signal regulated kinase (ERK) is a member of the MAPK family. ERK1/2 inhibitor 6 has the potential for the research or prevention of cancer, inflammation or other proliferative diseases (extracted from patent WO2021063335A1, compound 1)[1].
ERK5-IN-3 (compound 33j) is a potent and selective ERK5 (extracellular signal-related kinase 5) inhibitor, with an IC50 of 6 nM. ERK5-IN-3 shows antiproliferation activity against Hela cells, with an IC50 of 31 nM[1].
β-Neo-Endorphin is an endogenous opioid peptide. β-Neo-Endorphin is a hypothalamic “big” Leu-enkephalin of porcine origin. β-Neo-Endorphin shows activation of the Erk1/2, MMP-2 and MMP-9[1][2].
(R)-VX-11e (Compound 1) is an ERK2 inhibitor[1].
Honokiol is a bioactive, biphenolic phytochemical that possesses potent antioxidative, anti-inflammatory, antiangiogenic, and anticancer activities by targeting a variety of signaling molecules. It inhibits the activation of Akt and enhances the phosphorylation of ERK1/ERK2.
Tauroursodeoxycholate-d4 is deuterium labeled Tauroursodeoxycholate. Tauroursodeoxycholate (Tauroursodeoxycholic acid) is an endoplasmic reticulum (ER) stress inhibitor. Tauroursodeoxycholate significantly reduces expression of apoptosis molecules, such as caspase-3 and caspase-12. Tauroursodeoxycholate also inhibits ERK.
Mogrol is a biometabolite of mogrosides, and acts via inhibition of the ERK1/2 and STAT3 pathways, or reducing CREB activation and activating AMPK signaling.
Pseudocoptisine acetate, a quaternary alkaloid with a benzylisoquinoline skeleton, is isolated from the tubers of Corydalis turtschaninovii. Pseudocoptisine acetate shows anti-inflammatory properties[1].
LM22B-10 is an activator of TrkB/TrkC neurotrophin receptor, and can induce TrkB, TrkC, AKT and ERK activation in vitro and in vivo.
SHP2-IN-23 (compound 30) is an orally active SHP2 inhibitor (IC50=38 nM) with excellent in vivo efficacy and pharmacokinetic profiles. SHP2-IN-23 inhibits ERK phosphorylation with IC50=5 nM[1].