p38β

SB 202190 (FHPI) is a p38 MAPK inhibitor that inhibits p38α and p38β2 (IC50=50/100 nM) selectively and cell-permeably. SB 202190 has antitumor activity and also induces the differentiation of human embryonic stem cells into cardiomyocytes.

AL 8697 is a selective p38α MAPK inhibitor (IC50 = 6 nM) with 14-fold selectivity over p38β (IC50 = 82 nM) and 300-fold selectivity over a panel of 91 kinases. AL 8697 has anti-inflammatory activity.

Talmapimod (SCIO-469) is a selective, orally active, ATP-competitive p38α inhibitor with IC50 values of 9 nM for p38α and 90 nM for p38β. Talmapimod exhibits at least 2000-fold selectivity over a panel of 20 kinases, including other MAPKs.

SR-318 is a potent and highly selective inhibitor of p38 MAPK, demonstrating IC50 values of 5 nM for p38α, 32 nM for p38β, and 6.11 μM for p38α/β. It possesses both anti-cancer and anti-inflammatory activity.

Talmapimod hydrochloride is a selective and ATP-competitive p38α inhibitor (IC50: 9 nM). It also shows about 10-fold selectivity over p38β, and at least 2000-fold selectivity over a panel of 20 other kinases, including other MAPKs.

PF-03715455 potently inhibits LPS-induced TNFα production in human whole blood (IC50=1.7 nM). PF-03715455 is an effective inhibitor of inhaled p38 MAPK. PF-03715455 displays some selectivity for p38α over p38β (respective IC50: 0.88 and 23 nM). PF-0371545

RWJ-67657 (JNJ 3026582) is an orally active, selective p38α and p38β MAPK inhibitor (IC50s: 1 and 11 μM, respectively), with no activity at p38γ and p38δ, and demonstrates cardioprotective effects.

PH-797804 is a pyridinone inhibitor of p38α (IC50: 26 nM, in a cell-free assay); 4-fold more selective versus p38β and does not inhibit JNK2.

Losmapimod (GSK-AHAB) (GW856553X; SB856553; GSK-AHAB) is a specific, potent, and orally active p38 MAPK inhibitor (pKi: 8.1/7.6 for p38α/β).

UM-164 (DAS-DFGO-II), a highly potent c-Src inhibitor with a dissociation constant (Kd) of 2.7 nM, also effectively inhibits p38α and p38β.

Neflamapimod (VX-745) , a specific and effective inhibitor of p38α(IC50=10 nM), is 22-fold greater specificity against p38β and no inhibition activity to p38γ.

TAK-715 is a p38 MAPK inhibitor for p38α.

Pamapimod (R1503) (R-1503, Ro4402257) is a novel, selective inhibitor of p38 mitogen-activated protein kinase. It inhibits p38α and p38β enzymatic activity with IC50 values of 0.014±0.002 and 0.48± 0.04 microM, respectively with no activity against p38delta or p38 gamma isoforms.

SB 239063 (SB239063) is a potent and selective p38 MAPKα/β inhibitor with IC50 of 44 nM, showing no activity against the γ- and δ-kinase isoforms.

p38 MAPK inhibitor is a potent inhibitor of p38 MAP kinase (IC50 = 35 nM). It inhibits senescence induced by the oncogene RAS.

p38α inhibitor 4 is a selective MAPK p38α inhibitor, which is used to study diabetes, pain and chronic inflammation.

Ralimetinib is a selective inhibitor that blocks phosphorylation of MK2 at Thr334, without affecting the phosphorylation of p38α MAPK, JNK, ERK1/2, c-Jun, ATF2, or c-Myc. Ralimetinib functions as an ATP-competitive inhibitor of p38 MAPK α/β, demonstrating IC50 values of 5.3 and 3.2 nM, respectively, and is under investigation as an anti-inflammatory and anticancer therapeutic.

p38 MAP Kinase Inhibitor Ⅵ is a potent p38 MAP Kinase inhibitor with anti-inflammatory activity.

p38 Kinase inhibitor 8 (Compound CCLXXVIII) is an orally active inhibitor targeting p38β and JNK2α2, with IC50 values of 6.3 nM and 53.6 nM, respectively. It has demonstrated anti-inflammatory effects in a rat model of collagen-induced arthritis.

p38 MAPK inhibitor IV is an ATP-competitive inhibitor of p38 MAP kinases with IC50 values of 0.13, 0.55, 5.47, and 8.63 μM for p38α, p38β, p38x, and p38δ, respectively, in vitro.[1] It also inhibits LPS-induced TNF-α and IL-1β cytokine production (IC50s = 22 and 44 nM, respectively) in human peripheral blood mononuclear cells.

p38 MAPK-IN-2 is a potent inhibitor of p38 kinase.

p38 MAPK-IN-1 is a novel selective p38 MAPK inhibitor with high potency, long duration, and low clearance, which reduces inflammatory responses by inhibiting LPS-induced TNF-α production.

p38 MAPK-IN-6 (compound c47) is an inhibitor of p38 MAPK, exhibiting a 14% inhibition rate at a concentration of 10 μM.

p38 Kinase inhibitor 7 (Comp:XXXIX) is an inhibitor of p38α, with an IC50 value of 5.25 nM. It also effectively suppresses TNFα production in THP-1 cells, demonstrating an IC50 of 5.88 nM.