ArticleKidney research and clinical practice2025
Tonsil-derived mesenchymal stem cells protect the kidney from gentamicin-induced acute kidney injury by incorporation into damaged renal tubules and amelioration of oxidative and endoplasmic reticulum stresses.
Article in Kidney research and clinical practice, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundStem cell-based therapy is one of the tools for acute kidney injury (AKI) treatment. Tonsil tissue is a promising alternative source for the high-yield isolation of mesenchymal stem cells (MSCs). This study was undertaken to investigate the effects of tonsil-derived MSCs (T-MSCs) in animal model of AKI induced by gentamicin (GM).
methodsTwenty Sprague-Dawley rats were divided into four groups: Control, GM (70 mg/kg/day, intraperitoneal injection for 10 days), GM + T-MSCs (1 × 107 cells, intravenous injection at 1 day after the last vehicle/GM), and T-MSCs. Renal function, apoptosis, and markers of endoplasmic reticulum stress were measured on day 16 after the first vehicle/GM. Oxidative stress was assessed by measuring urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG) and the expression of glutathione peroxidase (GPx) and catalase. Effects of T-MSCs on GM-induced apoptosis and oxidative stress in NRK cells were also evaluated using a co-culture technique of NRK cells and T-MSC.
resultsIn the GM + T-MSCs group, blood urea nitrogen, creatinine, and tubular damage score were lower compared to the GM group. T-MSCs injection decreased apoptotic cells and the expression of Bax, cytochrome c, and cleaved caspase and increased Bcl-2. T-MSC injection decreased urinary 8-OHdG and increased expression of GPx and catalase in the kidneys. Anti-human nuclei and PKH26 staining demonstrated the localization of T-MSCs in the tubules of renal cortex. In-vitro study revealed that T-MSCs or T-MSC-conditioned media ameliorated GM-induced nicotinamide adenine dinucleotide phosphate oxidase-1 expression, hydrogen peroxide generation, and apoptosis of NRK cells.
conclusionOur study demonstrated that T-MSCs ameliorated GM-induced AKI by directly incorporating into the damaged renal tubules and exerting antiapoptotic and antioxidative effects.
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