Research Article

Soluble PTX3 of Human Umbilical Cord Blood-Derived Mesenchymal Stem Cells Attenuates Hyperoxic Lung Injury by Activating Macrophage Polarization in Neonatal Rat Model

Figure 1

Macrophage polarization effect of UCB-MSCs under LPS-induced inflammation conditions. Rat alveolar macrophages (NR8383) were stimulated with LPS and cocultured with UCB-MSCs for 3 days. (a) The macrophage markers M1 and M2 were examined by staining with CD11b or CD163, respectively. Expression levels of CD11b (red) and CD163 (green) were analyzed by confocal microscopy. Nuclei were stained with Hoechst 33342 (blue). Quantitative results are displayed as the percentage of CD11b- or CD163-positive cells. . (b) Cell supernatants were analyzed for inflammatory cytokines (rat IL-1α, rat IL-6, and rat IL-8) or anti-inflammatory cytokine (rat IL-10) by ELISA. (a, b) Error bars represent the , per group; , . MФ: macrophage; L: LPS.
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