1. A Novel Photosensitizer 3¹,13¹-phenylhydrazine -Mppa (BPHM) and Its in Vitro Photodynamic Therapy against HeLa Cells.
- Author
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Li W, Tan G, Cheng J, Zhao L, Wang Z, and Jin Y
- Subjects
- Antineoplastic Agents chemistry, Antineoplastic Agents metabolism, HeLa Cells, Humans, Hydrazones chemistry, Mannitol pharmacology, Molecular Structure, Photosensitizing Agents chemistry, Photosensitizing Agents metabolism, Porphyrins chemistry, Reactive Oxygen Species metabolism, Sodium Azide pharmacology, Antineoplastic Agents therapeutic use, Hydrazones therapeutic use, Photochemotherapy, Photosensitizing Agents therapeutic use, Porphyrins therapeutic use
- Abstract
Photodynamic therapy (PDT) has attracted widespread attention due to its potential in the treatment of various cancers. Porphyrinic pyropheophorbide-a (PPa) has been shown to be a potent photosensitizer in PDT experiments. In this paper, a C-3¹,13¹ bisphenylhydrazone modified methyl pyropheophorbide-a (BPHM) was designed and synthesized with the consideration that phenylhydrazone structure may extend absorption wavelength of methyl pyro-pheophorbide-a (Mppa), and make the photosensitizer potential in deep tumor treatment. The synthesis, spectral properties and in vitro photodynamic therapy (PDT) against human HeLa cervical cancer cell line was studied. Methyl thiazolyl tetrazolium (MTT) assay showed the title compound could achieve strong inhibition of cervical cancer cell viability under visible light (675 nm, 25 J/cm²). Cell uptake experiments were performed on HeLa cells. Morphological changes were examined and analyzed by fluorescent inverted microscope. In addition, the mechanism of the photochemical processes of PDT was investigated, which showed that the formation of singlet oxygen after treatment with PDT played a moderate important role.
- Published
- 2016
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