A mitochondria-targeted organic arsenical accelerates mitochondrial metabolic disorder and function injury
作者:Xiao-Yang Fan、Yu-Jiao Liu、Yu-Meng Cai、An-Dong Wang、Yin-Zheng Xia、Yan-Jun Hu、Feng-Lei Jiang、Yi Liu
DOI:10.1016/j.bmc.2019.01.008
日期:2019.3
Considering the vital role of mitochondria in the anti-cancer mechanism of organic arsenical, the mitochondria-targeted precursor PDT-PAO-TPP was designed and synthesized. PDT-PAO-TPP, as a delocalization lipophilic cation (DLCs) which mainly accumulated in mitochondria, contributed to improve anti-cancer efficacy and selectivity towards NB4 cells. In detail, PDT-PAO-TPP inhibited the activity of PDHC resulting in the suppression of ATP synthesis and thermogenesis disorder. Additionally, the inhibition of respiratory chain complex I and IV by short-time incubation of PDT-PAO-TPP also accelerated the respiration dysfunction and continuous generation of ROS. These results led to the release of cytochrome c and activation of caspase family-dependent apoptosis. Different from the mechanism of PDT-PAO in HL-60 cells, it mainly induced the mitochondrial metabolic disturbance resulting in the intrinsic apoptosis via inhibiting the activity of PDHC in NB4 cells, which also implied that the efficacy exertion of organic arsenical was a complex process involved in many aspects of cellular function. This study systematically clarifies the anti-cancer mechanism of mitochondria-targeted organic arsenical PDT-PAO-TPP and confirms the new target PDHC of organic arsenicals, which further supports the organic arsenical as a promising anticancer drug.
Dual Inhibition of Pyruvate Dehydrogenase Complex and Respiratory Chain Complex Induces Apoptosis by a Mitochondria‐Targeted Fluorescent Organic Arsenical in vitro and in vivo
作者:Yu‐Jiao Liu、Xiao‐Yang Fan、Dong‐Dong Zhang、Yin‐Zheng Xia、Yan‐Jun Hu、Feng‐Lei Jiang、Fu‐Ling Zhou、Yi Liu
DOI:10.1002/cmdc.201900686
日期:2020.3.18
targeting mitochondria and the fluorophore tracing ability, a fluorescent mitochondria-targeted organic arsenical PDT-PAO-F16 was fabricated, which not only visualized the cellular distribution, but also exerted anti-cancer activity in vitro and in vivo via targeting pyruvate dehydrogenase complex (PDHC) and respiratory chain complexes in mitochondria. In details, PDT-PAO-F16 mainly accumulated into