Exogenous spermidine ameliorates tubular necrosis during cisplatin nephrotoxicity.
10.5115/acb.2018.51.3.189
- Author:
Sang Pil YOON
1
;
Jinu KIM
Author Information
1. Department of Anatomy, Jeju National University School of Medicine, Jeju, Korea. jinu.kim@jejunu.ac.kr
- Publication Type:Original Article
- Keywords:
Cisplatin;
Nephrotoxicity;
Spermidine;
Lipid peroxidation;
Necrosis;
Ornithine decarboxylase
- MeSH:
Acceleration;
Acute Kidney Injury;
Adenosine Triphosphate;
Apoptosis;
Cell Death;
Cisplatin*;
DNA Damage;
Kidney;
Lipid Peroxidation;
Necrosis*;
Ornithine Decarboxylase;
Oxidative Stress;
Poly(ADP-ribose) Polymerases;
RNA, Small Interfering;
Spermidine*;
Transfection;
Yeasts
- From:Anatomy & Cell Biology
2018;51(3):189-199
- CountryRepublic of Korea
- Language:English
-
Abstract:
The hallmark of cisplatin-induced acute kidney injury is the necrotic cell death in the kidney proximal tubules. However, an effective approach to limit cisplatin nephrotoxicity remains unknown. Spermidine is a polyamine that protects against oxidative stress and necrosis in aged yeasts, and the present study found that exogenous spermidine markedly attenuated tubular necrosis and kidney dysfunction, but not apoptosis, during cisplatin nephrotoxicity. In addition, exogenous spermidine potently inhibited oxidative/nitrative DNA damage, poly(ADP-ribose) polymerase 1 (PARP1) activation and ATP depletion after cisplatin injection. Conversely, inhibition of ornithine decarboxylase (ODC) via siRNA transfection in vivo significantly increased DNA damage, PARP1 activation and ATP depletion, resulting in acceleration of tubular necrosis and kidney dysfunction. Finally, exogenous spermidine removed severe cisplatin injury induced by ODC inhibition. In conclusion, these data suggest that spermidine protects kidneys against cisplatin injury through DNA damage and tubular necrosis, and this finding provides a novel target to prevent acute kidney injury including nephrotoxicity.
