Cell lines

THP-1 and MV4-11 leukemia cells

Preparation method

The solubility of this compound in DMSO is > 10 mM. General tips for obtaining a higher concentration: Please warm the tube at 37℃ for 10 minutes and/or shake it in the ultrasonic bath for a while. Stock solution can be stored below -20℃ for several months.

Reacting condition

72 h, 5 μM

Applications

SB202190 is a specific inhibitor of p38ɑ and p38β through competition with ATP for the same binding site on p38. SB202190 potently activated the growth of THP-1 and MV4-11 cells. Furthermore, SB202190 increased the phosphorylation of C-Raf and ERK, suggesting that Raf–MEK–MAPK pathway activation is involved in the cell growth induced by SB202190.

Animal models

Three-month specific pathogen-free (SPF) male Wistar rats

Dosage form

5 μL of 10 μmol/L SB202190, ICV injection

Application

One week after SB202190 treatment, p38 MAPK phosphorylation in hippocampus was higher in the model group than in the SB202190 group. Compared to the model group, the SB202190 group exhibited significantly shorter escape latencies in the Morris water maze hidden platform trials. The SB202190 group also showed higher Bcl-2 expression, lower caspase-3 expression and significantly decreased neuronal apoptosis in hippocampus.

Other notes

Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal.

SB202190 (FHPI) is a potent p38 MAPK inhibitor that specifically inhibits p38α and p38β with IC50 values of 50 and 100 nM, respectively [1].

SB202190 has been reported to potently enhance the growth of leukemia cell lines THP-1 and MV4-11. SB202190 activates the phosphorylation ERK and C-Raf. Studies have shown that the ED50 values of U0126 and FPT inhibitor II were significantly decreased in the presence of SB202190 [2].

SB202190 triggers changes in cell cycle profiles both during HU treatment and caffeine-induced PCC (premature chromosome condensation) in plants. Moreover, SB202190 and caffeine decrease independently HU-induced histone H4 Lys5 acetylation [3].

References:
[1] Davies SP1, Reddy H, Caivano M, Cohen P. Specificity and mechanism of action of some commonly used protein kinase inhibitors. Biochem J. 2000 Oct 1;351(Pt 1):95-105.
[2] Hirosawa M1, Nakahara M, Otosaka R, Imoto A, Okazaki T, Takahashi S. The p38 pathway inhibitor SB202190 activates MEK/MAPK to stimulate the growth of leukemia cells. Leuk Res. 2009 May;33(5):693-9.
[3] Winnicki K1, Maszewski J. SB202190 affects cell response to hydroxyurea-induced genotoxic stress in root meristems of Vicia faba. Plant Physiol Biochem. 2012 Nov;60:129-36.