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- W2757671188 abstract "Background aims On the basis of previous studies, exosomes secreted by human umbilical cord mesenchymal stromal cell (hucMSC-ex) could prevent and repair acute kidney injury induced by cisplatin in rats. However, its potential mechanism is still unclear. In the present study, the model with hucMSC-ex pretreated human renal tubular epithelial cell lines HK-2 that could prevent the injury of cisplatin was successfully established. Methods First, we pretreated the HK-2 cells with hucMSC-ex for 24 h. Cisplatin was then used to injure HK-2 cells. Gain and loss of function study were used to explore the role of 14-3-3ζ. The expression level of proliferating cell nuclear antigen (PCNA) was analyzed by immunofluorescence assay and Western blot. The number of apoptotic cells was detected by terminal deoxynucleotidyl transferase dUTP nick end labeling assay and flow cytometry analysis. The formation of autophagosomes was observed under super-resolution optical microscope. Western blot was used to analyze the expression levels of LC3B, P62, 14-3-3ζ and Bax. Results Pretreating cells with hucMSC-ex could prevent the injury of cisplatin by reducing the number of apoptotic cells and increasing the expression level of PCNA. Simultaneously, the autophagic level was up-regulated. The application of autophagic inhibitor 3-methyladenine (3-MA) could reverse the protective effect of hucMSC-ex. The overexpression of 14-3-3ζ enhanced the autophagic level and protected the injury of cisplatin. The knock-down of 14-3-3ζ could reduce the autophagic level and enhance the disadvantage of cisplatin. The enhanced injury of cisplatin was reversed when the knock-down of 14-3-3ζ was replenished with hucMSC-ex. Conclusions 14-3-3ζ transported by hucMSC-ex may up-regulate autophagic level in HK-2 cells, which can prevent the injury of cisplatin. This discovery provides the new theoretical basis for the prevention of cisplatin-induced nephrotoxicity by hucMSC-ex." @default.
- W2757671188 created "2017-10-06" @default.
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- W2757671188 date "2018-01-01" @default.
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- W2757671188 title "HucMSC exosome-transported 14-3-3ζ prevents the injury of cisplatin to HK-2 cells by inducing autophagy in vitro" @default.
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- W2757671188 doi "https://doi.org/10.1016/j.jcyt.2017.08.002" @default.
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