SB 203580

Химические свойства

White to Off-White Solid

Использование

MDCK cells were treated with SB 203580 to study the role of MAPK signaling in inducing hypertonicity of cell membrane and potassium depletion.¹⁶ It was used to inhibit MAPK signaling in mouse cortical neurons¹⁷ and human hepatocellular carcinoma cell lines.¹⁸

Определение

ChEBI: A member of the class of imidazoles carrying 4-methylsulfinylphenyl, 4-pyridyl and 4-fluorophenyl substituents at positions 2, 4 and 5 respectively. An inhibitor of mitogen-activated protein kinase.

Общее описание

Reduces epirubicin-induced cell injury and caspase-3/7 activity. A highly specific, potent, cell-permeable, selective, reversible, and ATP-competitive inhibitor of p38 kinase (IC₅₀ = 34 nM in vitro, 600 nM in cells). Also known as reactivating kinase (RK) and CSBP (cytokine synthesis anti-inflammatory drug binding protein). Does not significantly inhibit JNK or p42 MAP kinase even at 100 μM. Inhibits IL-1 and TNF-α production from LPS-stimulated human monocytes and the human monocyte cell line THP-1 (IC₅₀ = 50-100 nM). SB 203580 has also been shown to be an effective inhibitor of inflammatory cytokine production in vivo in both mice and rats.

Биологическая активность

Water-soluble salt of SB 203580 (4-[5-(4-Fluorophenyl)-2-[4-(methylsulfonyl)phenyl]-1H-imidazol-4-yl]pyridine ). Selective inhibitor of p38 mitogen-activated protein kinase (IC 50 values are 50 and 500 nM for SAPK2a/p38 and SAPK2b/p38 β 2 respectively). Displays 100-500-fold selectivity over LCK, GSK3 β and PKB α . Shown to inhibit interleukin-2-induced T-cell proliferation, cyclooxygenase-1 and -2, and thromboxane synthase.