Research Article

Quantification of Protoporphyrin IX Accumulation in Glioblastoma Cells: A New Technique

Figure 3

This figure displays YFP and PpIX fluorescence and ANOVA main effects for various points during a time course. Absolute fluorescence of PpIX (a) displays an increase in fluorescence over time, suggesting that cells may need more time to metabolize 5-ALA and accumulate PpIX. YFP fluorescence (b) was also increased over time, being indicative of cell growth over time. The bottom figure (c) represents relative PpIX accumulation (PpIX/YFP). The ratio demonstrates that PpIX is dependent upon the number of cells available to metabolize the 5-ALA and shows the importance of quantifying PpIX fluorescence.
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