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Title: Investigation of Cobalt(III) Cage Complexes as Inhibitors of the Mitochondrial Calcium Uniporter
Abstract The mitochondrial calcium uniporter (MCU) mediates uptake of calcium ions (Ca2+) into the mitochondria, a process that is vital for maintaining normal cellular function. Inhibitors of the MCU, the most promising of which are dinuclear ruthenium coordination compounds, have found use as both therapeutic agents and tools for studying the importance of this ion channel. In this study, six Co3+cage compounds with sarcophagine‐like ligands were assessed for their abilities to inhibit MCU‐mediated mitochondrial Ca2+uptake. These complexes were synthesized and characterized according to literature procedures and then investigated in cellular systems for their MCU‐inhibitory activities. Among these six compounds, [Co(sen)]3+(3, sen=5‐(4‐amino‐2‐azabutyl)‐5‐methyl‐3,7‐diaza‐1,9‐nonanediamine) was identified to be a potent MCU inhibitor, with IC50values of inhibition of 160 and 180 nM in permeabilized HeLa and HEK293T cells, respectively. Furthermore, the cellular uptake of compound3was determined, revealing moderate accumulation in cells. Most notably,3was demonstrated to operate in intact cells as an MCU inhibitor. Collectively, this work presents the viability of using cobalt coordination complexes as MCU inhibitors, providing a new direction for researchers to investigate.  more » « less
Award ID(s):
1750295
PAR ID:
10467011
Author(s) / Creator(s):
;
Publisher / Repository:
WIley-VCH
Date Published:
Journal Name:
European Journal of Inorganic Chemistry
Volume:
26
Issue:
9
ISSN:
1434-1948
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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