Abstract
The kidney is one of the most metabolically demanding organs in the human body and requires a large amount of energy, in the form of adenosine triphosphate (ATP), to perform and maintain normal renal functions. To meet this energy demand, proximal tubule cells within the nephron segments of the renal cortex are mitochondrially dense with high oxygen consumption rates. Mitochondria are complex organelles involved in diverse cellular and molecular functions, including the production of ATP, calcium homeostasis, and phospholipid regulation. Mitochondrial dysfunction is critical in the onset and progression of kidney disease. Dysfunctional renal mitochondria have been linked with alterations in redox homeostasis, impaired bioenergetics, oxidative stress, and inflammation, all of which result in renal cell injury and death, as well as fibrotic accumulation in kidney injury and disease. As such, interest in the development and/or repurposing of mitochondria-targeted therapeutics for the potential treatment of kidney diseases has recently surged. While novel therapeutics and promising new drug targets have been identified, drug repurposing for kidney diseases offers numerous advantages over traditional drug discovery initiatives, including reduced cost, time of therapeutic development, and preclinical testing, in addition to known pharmacokinetics/pharmacodynamics and safety profiles. Here, we provide an overview of mitochondrial dysfunction in the context of kidney injury and disease and shed light on promising mitochondria-targeted therapeutic agents that display repurposing potential for the restoration of renal function and/or acceleration of renal recovery.
Published Version
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