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. 2003 Oct 14;89(8):1590–1597. doi: 10.1038/sj.bjc.6601298

Figure 3.

Figure 3

PDT fails to induce cytochrome c release, dissipation of mitochondrial membrane potential and apoptosis in DU-145 cells. (A) Fluorescence micrographs of immunocytochemically stained cytochrome c in untreated cells or in cells 3–6 h after PDT. Nuclear DNA was stained with Hoechst 33342. (B) Flow cytometric determination of the percentage of DU-145 (top) or MCF-7c3 (bottom) cells with less than the G1 content of DNA. DU-145 cells were either untreated (left) or exposed to PDT and recovered 6 h later (right). MCF-7c3 cells were either untreated (left) or exposed to 1 μM STS for 16 h (right). Cells were stained with propidium iodide and analysed by flow cytometry. The percentage of apoptotic cells with a sub-G1 DNA content (Gate D) is given. (C) Fluorescence micrographs of DU-145 cells stained with JC-1 for 30 min at various intervals after PDT.