Free radical research · 2017
Differential modes of photosensitisation in cancer cells by berberine and coralyne.
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Bhattacharyya Rahul, Saha Bhaskar, Tyagi Mrityunjaya, Bandyopadhyay Sandip K, Patro Birija Sankar, Chattopadhyay Subrata
Аннотация
In this study, we demonstrated that the cytotoxicity of the protoberberine alkaloids such as coralyne, berberine and jatrorrhizine to several human cancer cell lines can be improved significantly in combination with UVA exposure. However, the phototoxic property of coralyne was much higher than that of the other two alkaloids. The combination of coralyne and UVA (designated as CUVA) induced oxygen-independent cytotoxicity in the human lung cancer A549 cells by producing more lethal DNA double-strand breaks, and the effect was mediated via the replication machinery. In comparison, the berberine-induced phototoxicity to the A549 cells was mediated by reactive oxygen species generation, mitochondrial membrane permeabilisation and caspase-9/caspase-3 activation.