p38 inhibition effects on HuR expression and regulation in U937 monocytic cells.

<p>Full length HuR (36 kDa) and HuR cleavage products (CP1; 24 kDa and CP2; 8 kDa) in LPS-stimulated (A) and <i>Salmonella enteritidis</i>-infected (B) p38 inhibitor- or negative control for p38 inhibition-treated U937 Mock, B27g, H9F and E45M cells at 5 h time point (SB90; p38 inhibitor SB202190 and SB74; control for p38 inhibition SB202474) Expression of HuR was determined by SDS-PAGE and Western blotting. HSPA8 was used as a loading control. Results from densitometric analysis of five independent experiments are shown in diagram. See <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0070377#s2" target="_blank">Materials and Methods</a> for details. * = P-value ≤0.06 for HuR and <sup>†</sup> = P-value ≤0.06 for CP2 versus untreated sample at the respective cell line.</p>