Figure 3From: Lipoteichoic acid induces surfactant protein-A biosynthesis in human alveolar type II epithelial cells through activating the MEK1/2-ERK1/2-NF-κB pathwayEffects of lipoteichoic acid (LTA) on the expression of the transcription factor, nuclear factor (NF)-κB. A549 cells were exposed to 30 μg/ml LTA for 1, 6, and 24 h. Levels of cytosolic NF-κB p65 (cNF-κB) were immunodetected (A, top panel). β-Actin was detected as the internal standard (bottom panel). These protein bands were quantified and analyzed (B). Each value represents the mean ± SEM for n = 6. An asterisk (*) indicates that a value significantly differed from the control groups, p < 0.05. AU, arbitrary unit.Back to article page