Oxidative Medicine and Cellular Longevity / 2012 / Article / Fig 7

Research Article

Group VIB Phospholipase A2 Promotes Proliferation of INS-1 Insulinoma Cells and Attenuates Lipid Peroxidation and Apoptosis Induced by Inflammatory Cytokines and Oxidant Agents

Figure 7

Influence of inflammatory cytokines and streptozotocin (STZ) on apoptosis of INS-1 cell lines. In panel (a), control INS-1 cells or iPLA2γ-knockdown INS-1 cells (iPLA2-KD) were incubated with vehicle only (light bars) or with IL-1β (5 ng/mL) and IFN-γ (80 ng/mL) (dark bars) for 16 hr, and the percentages of apoptotic cells were then determined by FACS as described in Experimental Procedures. In panel (b), control INS-1 cells (light bars) or iPLA2γ-Knockdown INS-1 cells (dark bars) were incubated with vehicle alone or with varied concentrations of STZ (5 mM or 7.5 mM) for 16 hr, and the percentages of apoptotic cells were then determined as in panel (a). Mean values ± SEM ( ) are displayed. An asterisk (*) indicates a significant difference ( ) between control cells and iPLA2γ-KD cells. An (X) indicates a significant difference ( ) from the vehicle-treated condition.

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