期刊
EUROPEAN JOURNAL OF PHARMACOLOGY
卷 810, 期 -, 页码 1-8出版社
ELSEVIER
DOI: 10.1016/j.ejphar.2017.06.013
关键词
alpha-lipoic acid; Human podocytes; ZNF580; Nephrin
Human podocytes (hPC) are essential for maintaining normal kidney function and dysfunction or loss of hPC play a pivotal role in the manifestation and progression of chronic kidney diseases including diabetic nephropathy. Previously, alpha-Lipoic acid (alpha-LA), a licensed drug for treatment of diabetic neuropathy, was shown to exhibit protective effects on diabetic nephropathy in vivo. However, the effect of alpha-LA on hPC under non-diabetic conditions is unknown. Therefore, we analyzed the impact of alpha-LA on cell viability and expression of nephrin and zinc finger protein 580 (ZNF580) in normal hPC in vitro. Protein analyses were done via Western blot techniques. Cell viability was determined using a functional assay. hPC viability was dynamically modulated via alpha-LA stimulation in a concentration-dependent manner. This was associated with reduced nephrin and ZNF580 expression and increased nephrin phosphorylation in normal hPC. Moreover, alpha-LA reduced nephrin and ZNF580 protein expression via 'kappa-light-chain-enhancer' of activated B-cells (NF-kappa B) inhibition. These data demonstrate that low alpha-LA had no negative influence on hPC viability, whereas, high alpha-LA concentrations induced cytotoxic effects on normal hPC and reduced nephrin and ZNF580 expression via NF-kappa B inhibition. These data provide first novel information about potential cytotoxic effects of alpha-LA on hPC under non-diabetic conditions.
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