Abstract
Background
Nephrotoxicity is often referred to as a side effect of most drugs, but methods for effectively detecting nephrotoxicants still require development.
Objective
In this study, we identified the characteristic cellular responses and target genes affected by three nephrotoxic drugs (cisplatin, amphotericin B, and geneticin) using human oligonucleotide microarray and applied these genes to nephrotoxicity assessment in human kidney proximal tubular cells (HK-2).
Results
Through analysis of the gene expression profiles, it was identified 21 up- and 58 down-regulated genes changed by all three nephrotoxicants. Especially, the nephrotoxicants induced an increase in expression of a family of growth arrest and DNA-damage (GADD)-inducible genes (GADD34, GADD45A, GADD45G, and GADD153). In addition, these nephrotoxicants induced phosphorylation of p38 MAPK, which acts upstream of the GADD-related apoptosis pathway. The influence of other types of nephrotoxicants on expression of GADD family genes was also examined.
Conclusion
Our findings support that cisplatin, amphotericin B, and geneticin mediate induction of the GADD family of genes via the p38 MAPK pathway, resulting in the induction of apoptosis in HK-2 cells. We suggest that the apoptosis-related genes GADD45A and GADD153 may be reasonable candidate biomarkers for the screening of nephrotoxicity of drugs.
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Acknowledgements
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education [NRF-2017R1A6A1A06015181] to Kim Y-.J. and by the “KIST Program” to Ryu, J. C. of the Republic of Korea.
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Conceptualization, JCR and YJK.; methodology, MSK, JSR, and YJK; software, JSR and YC; validation, JKK, MSK, YH, and YEC; writing original draft preparation, MSK and YEC; writing review and editing, JKK, YH, and YJK; visualization, YEC and YC; supervision, JCR and YJK; project administration, JCR and YJK; funding acquisition, JCR and YJK All authors have read and agreed to the published version of the manuscript.
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Young-Eun Choi, Mi-Soon Kim, Yuna Ha, Yoon Cho, Jang Kyun Kim, Jae-Sung Rhee, Jae-Chun Ryu, and Youn-Jung Kim declare that they have no conflicts of interest.
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The authors confirm that the data supporting findings of the present study are available within the article and its supplementary materials. Raw data supporting the results are available from the CONTACT corresponding author [duckyj@inu.ac.kr] on request.
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Choi, YE., Kim, MS., Ha, Y. et al. Association of expression of GADD family genes and apoptosis in human kidney proximal tubular (HK-2) cells exposed to nephrotoxic drugs. Mol. Cell. Toxicol. 18, 569–580 (2022). https://doi.org/10.1007/s13273-022-00231-3
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DOI: https://doi.org/10.1007/s13273-022-00231-3