Keli Kuang, Chunyan Li, Fatlinda Maksut, Deepanjan Ghosh, Robin Vinck, Maolin Wang, Joël Poupon, Run Xiang, Wen Li, Fei Li, Zhu Wang, Junrong Du, Marie-Paule Teulade-Fichou, Gilles Gasser, Sophie Bombard, Tao Jia
BACKGROUND: G-quadruplex DNA (G4) is a non-canonical structure forming in guanine-rich regions, which play a vital role in cancer biology and are now being acknowledged in both nuclear and mitochondrial (mt) genome. However, the impact of G4-based targeted therapy on both nuclear and mt genome, affecting mt function and its underlying mechanisms remain largely unexplored. METHODS: The mechanisms of action and therapeutic effects of a G4-binding platinum(II) complex, Pt-ttpy, on mitochondria were conducted through a comprehensive approaches with in vitro and in vivo models, including ICP-MS for platinum measurement, PCR-based genetic analysis, western blotting (WB), confocal microscope for mt morphology study, extracellular flux analyzer, JC1 and Annexin V apoptosis assay, flow cytometry and high content microscope screening with single-cell quantification of both ROS and mt specific ROS, as well as click-chemistry for IF study of mt translation...
May 13, 2024: Journal of Biomedical Science