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Photochlor is a second generation photosensitizer, which acts as a photodynamic therapy (PDT) agent. The cellular uptake of GO-PEG-HPPH and HPPH is investigated with 4T1 murine mammary cancer cells. The cells are incubated with GO-PEG-HPPH and free Photochlor at equivalent Photochlor concentration (1 µM) for 24 h and then observed with a confocal microscope. Upon intravenous administration, HPPH selectively accumulates in the cytoplasm of cancer or pre-cancerous cells. When laser light is applied, a photodynamic reaction between HPPH and oxygen occurs, resulting in the production of cytotoxic free radicals and singlet oxygen and free radical-mediated cell death. Compared to the first-generation photosensitizer porfimer sodium, HPPH shows improved pharmacokinetic properties and causes only mild skin photosensitivity which declines rapidly within a few days after administration.
| Molecular Weight | 636.82 |
| Formula | C39H48N4O4 |
| CAS Number | 149402-51-7 |
| Solubility (25°C) | DMSO 10 mM |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
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