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].
[D-Arg1,D-Phe5,D-Trp7,9,Leu11]-Substance P, a Substance P derivative, is a biased agonist toward neuropeptide and chemokine receptors. [D-Arg1,D-Phe5,D-Trp7,9,Leu11]-Substance P activates G12. [D-Arg1,D-Phe5,D-Trp7,9,Leu11]-Substance P binds to IL-8 and GRP receptors. [D-Arg1,D-Phe5,D-Trp7,9,Leu11]-Substance P inhibits ERK-2 activation, activates JNK activity. [D-Arg1,D-Phe5,D-Trp7,9,Leu11]-Substance P stimulates an increase in neutrophil migration and Ca2+ mobilization. [D-Arg1,D-Phe5,D-Trp7,9,Leu11]-Substance P is also a bombesin antagonist, and inhibits the growth of small cell lung cancer[1][2][3]
Sulforaphene, isolated from radish seeds, exhibits an ED50 against velvetleaf seedlings approximately 2 x 10-4 M. Sulforaphene promotes cancer cells apoptosis and inhibits migration via inhibiting EGFR, p-ERK1/2, NF‐κB and other signals[1][2][3][4].
TCS JNK 5a is a potent JNK3 inhibitor with a pIC50 of 6.7. TCS JNK 5a also inhibits JNK2 with a pIC50 of 6.5.
DS12881479 is a potent and selective Mnk1 inhibitor with an IC50 value of 21 nM. DS12881479 can be used in cancer research[1].
QL-X-138 is a selective and potent BTK/MNK dual kinase inhibitor with IC50 of 8, 107.4, and 26 nM for BTK, MNK1, and MNK2, respectively; exhibits covalent binding to BTK and noncovalent binding to MNK; enhances the antiproliferative efficacies in vitro against a variety of B-cell cancer cell lines, as well as AML and CLL primary patient cells; arrests cell cycle progression and strongly induces apoptosis.
UM-164 is a highly potent inhibitor of c-Src with a Kd of 2.7 nM. UM-164 also potently inhibits p38α and p38β.
U0126 is a potent, non-ATP competitive and selective MEK1 and MEK2 inhibitor, with IC50s of 72 nM and 58 nM, respectively. U0126 is an autophagy and mitophagy inhibitor[1][2][3][4].
Tat-NR2B9c is a 20-aa peptide, which acts as a postsynaptic density-95 (PSD-95) inhibitor, with an EC50 of 6.7 nM for PSD-95d2 (PSD-95 PDZ domain 2), and 670 nM for PSD-95d1; Tat-NR2B9c also reduces NMDA-induced p38 activation, and possesses neuroprotective efficacy.
HPK1-IN-15 is a potent and selective inhibitor of HPK1. Hematopoietic progenitor kinase 1 (HPKl) originally cloned from hematopoietic progenitor cells is a member of MAP kinase kinase kinase kinases (MAP4Ks) family. HPK1-IN-15 is useful in researching, preventing or ameliorating diseases or disorders associated with HPK1 activity such as cancer (extracted from patent WO2018049200A1, compound 50)[1].
(E)-Osmundacetone is the isomer of Osmundacetone. Osmundacetone significantly suppresses the phosphorylation of MAPKs, including JNK, ERK, and p38 kinases. Osmundacetone has a neuroprotective effect against oxidative stress[1].
Tat-NR2B9c (TFA) is a 20-aa peptide, which acts as a postsynaptic density-95 (PSD-95) inhibitor, with an EC50 of 6.7 nM for PSD-95d2 (PSD-95 PDZ domain 2), and 670 nM for PSD-95d1[1]. Tat-NR2B9c also reduces NMDA-induced p38 activation, and possesses neuroprotective efficacy[2].
CKI-7 is a potent and ATP-competitive casein kinase 1 (CK1) inhibitor with an IC50 of 6 μM and a Ki of 8.5 μM. CKI-7 is a selective Cdc7 kinase inhibitor. CKI-7 also inhibits SGK, ribosomal S6 kinase-1 (S6K1) and mitogen- and stress-activated protein kinase-1 (MSK1). CKI-7 has a much weaker effect on casein kinase II and other protein kinases[1][2][3][4].
Anti-inflammatory agent 35 (compound 5a27) is an orally active curcumin analogue with anti-inflammatory activity. Anti-inflammatory agent 35 blocks mitogen-activated protein kinase (MAPK) signaling and p65 nuclear translocation of NF-kB. Anti-inflammatory agent 35 also inhibits yellow neutrophil infiltration and pro-inflammatory cytokine production. Anti-inflammatory agent 35 significantly attenuates lipopolysaccharide (LPS)-induced acute lung injury (ALI) in vivo[1].
CCT241161 is an orally active pan-RAF inhibitor with IC50s of 3, 6, 10, 15 and 30 nM for LCK, CRAF, SRC, V600E-BRAF and BRAF, respectively. CCT241161 shows good activity to in BRAF and NRAS mutant melanomas. CCT241161 also exhibits anticancer cell proliferative activity[1].
Cyclorasin 9A5 is an 11-residue cell-permeable cyclic peptide that orthosterically inhibits the Ras-Raf protein interaction with an IC50 of 120 nM[1].
p38 Kinase inhibitor 4 (compound 135) is a potent p38 inhibitor[1].
SU3327 is a potent, selective and substrate-competitive JNK inhibitor with an IC50 of 0.7 μM. SU3327 also inhibits protein-protein interactions between JNK and JNK Interacting Protein (JIP) with an IC50 of 239 nM. SU3327 shows less active against p38α and Akt kinase[1][2].
B-Raf IN 9 (compound 8b) is a potent B-Raf inhibitor, with an IC50 of 24.79 nM. B-Raf IN 9 induces apoptosis and shows cell cycle arrest at G2/M phase. B-Raf IN 9 exhibits potent antitumor activity against human prostate cancer PC-3 cell line, with an IC50 of 7.83 µM[1].
MW-150 hydrochloride (MW01-18-150SRM hydrochloride) is a selective inhibitor of p38αMAPK isoform with a ki of 101 nM[1].
Urolithin B is one of the gut microbial metabolites of ellagitannins, and has anti-inflammatory and antioxidant effects. Urolithin B inhibits NF-κB activity by reducing the phosphorylation and degradation of IκBα, and suppresses the phosphorylation of JNK, ERK, and Akt, and enhances the phosphorylation of AMPK. Urolithin B is also a regulator of skeletal muscle mass[1][2].
p38α inhibitor 3 (Comp G7) is a p38α inhibitor that blocks the effectiveness of myoblast differentiation[1].
TC13172 is a mixed lineage kinase domain-like protein (MLKL) inhibitor with an EC50 value of 2 nM for HT-29 cells.
Antitumor agent-60 (compound 20) is a potent antitumor agent, targeting RAS-RAF signaling pathway and binding to CRAF with a Kd value of 3.93 μM. Antitumor agent-60 induces apoptosis by blocking cell cycle at G2/M phase. Antitumor agent-60 enhances the level of p53 and ROS. Antitumor agent-60 causes oval and irregular nucleus in cancer cells. Antitumor agent-60 can suppress the growth of tumor to some extent in A549 xenograft model[1].
p38-α MAPK-IN-4 (Compound 69) is a selective p38α MAPK inhibitor with an IC50 of 1.5 µM. p38-α MAPK-IN-4 rapidly and strongly prevents the development of mechanical allodynia (MA) in vivo[1].
Bohemine is a purine analogue and is a synthetic and selective CDK inhibitor with IC50s of 4.6 μM, 83 μM, and 2.7 μM for Cdk2/cyclin E, Cdk2/cyclin A, and Cdk9/cyclin T1, respectively. Bohemine also inhibits ERK2 with an IC50 of 52 μM and has less inhibitory effect on CDK1, CDK4 and CDK6. Bohemine has a broad spectrum anti-cancer activities[1][2].
Aspirin (Acetylsalicylic Acid) lithium is an orally active, potent and irreversible inhibitor of cyclooxygenase COX-1 and COX-2, with IC50 values of 5 and 210 μg/mL, respectively. Aspirin lithium induces apoptosis. Aspirin lithium inhibits the activation of NF-κB. Aspirin lithium also inhibits platelet prostaglandin synthetase, and can prevent coronary artery and cerebrovascular thrombosis[1][2][3][4][5][6].
Neflamapimod (VX-745) is a potent and selective inhibitor of p38α, and possesses anti-inflammatory activity.
SB-242235 is a potent and selective p38 MAP kinase inhibitor with IC50 of 1.0 uM.IC50 Value: 1.0 uM [1]Target: p38 MAPKin vitro: SB 242235 inhibited intracellular p38 activity, human chondrocytes were treated with different doses of SB 242235 prior to stimulation with IL-1_ for 15 min. MAPKAP K2 was then isolated from these cells and assayed using HSP27 as a substrate. SB 242235 dose-dependently inhibited the activation of MAPKAP K2 with an IC50 of 1.0 uM [1].in vivo: SB-242235 demonstrates generally favourable pharmacokinetic properties in all species examined(including rat, dog and monkey). Systemic plasma clearance was high in rat, but in the non-rodent species SB-242235 demonstrated low to moderate clearance with plasma half-lives > 4h. Oral bioavailability in each preclinical species was high. In rat and monkey, SB-242235 demonstrated non-linear elimination kinetics that manifested as a decrease in clearance with increasing dose and apparent oral bioavailability > 100% at high oral doses [2].In the skin of SKH-1 hairless mice, SB242235, prior to UVB irradiation, blocked activation of the p38 MAPK cascade, and abolished MAPKAPK-2 kinase activity and phosphorylation of HSP27. Moreover, SB242235 inhibited expression of the pro-inflammatory cytokines interleukin (IL)-6 and KC (murine IL-8) and COX-2 [3]. The preclinical pharmacokinetics of SB-242235 have been described previously. The present studies were conducted to describe the in vitro metabolic rates and routes of SB-242235 metabolism, to characterize its in vivo preclinical metabolism, and to use these data to aid in the prediction of the pharmacokinetic behaviour of SB-242235 in man [4].
ERK5-IN-4 (compound 34b) is a potent and selective inhibitor of extracellular signal-related kinase 5 (ERK5). ERK5-IN-4 inhibits ERK5 (full-length) and truncated ERK5 (ERK5 ΔTAD) kinase activity in HEK293 cells with an IC50 of 77 nM and 300 nM, respectively[1].