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Tacrolimus-induced nephrotoxicity in mice is associated with microRNA deregulation

  • Organ Toxicity and Mechanisms
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Abstract

Although Tacrolimus is an immunosuppressive drug widely used in renal transplantation, its chronic use paradoxically induces nephrotoxic effects, in particular renal fibrosis, which is responsible for chronic allograft dysfunction and represents a major prognostic factor of allograft survival. As molecular pathways and mechanisms involved in Tacrolimus-induced fibrogenic response are poorly elucidated, we assessed whether miRNAs are involved in the nephrotoxic effects mediated by Tacrolimus. Treatment of CD-1 mice with Tacrolimus (1 mg/kg/d for 28 days) resulted in kidney injury and was associated with alteration of a gene expression signature associated with cellular stress, fibrosis and inflammation. Tacrolimus also affected renal miRNA expression, including miRNAs previously involved in fibrotic and inflammatory processes as “fibromirs” such as miR-21-5p, miR-199a-5p and miR-214-3p. In agreement with in vivo data, Renal Proximal Tubular Epithelial cells exposed to Tacrolimus (25 and 50 µM) showed upregulation of miR-21-5p and the concomitant induction of epithelial phenotypic changes, inflammation and oxidative stress. In conclusion, this study suggests for the first time that miRNAs, especially fibromiRs, participate to Tacrolimus-induced nephrotoxic effects. Therefore, targeting miRNAs may be a new therapeutic option to counteract Tacrolimus deleterious effects on kidney.

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Acknowledgements

The authors gratefully thank M-H Gevaert (Laboratoire d’Histologie, Faculté de Médecine de Lille) and D Taillieu (Animalerie Haute Technologie, Faculté de Médecine de Lille) for their technical help. The authors gratefully also acknowledge the technical support of V. Magnone, N. Pons, G. Rios (UCA GenomiX platform of the University Cote d’Azur).

Funding

This study was supported by Santelys association.

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Correspondence to Christelle Cauffiez.

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Vandenbussche, C., Van der Hauwaert, C., Dewaeles, E. et al. Tacrolimus-induced nephrotoxicity in mice is associated with microRNA deregulation. Arch Toxicol 92, 1539–1550 (2018). https://doi.org/10.1007/s00204-018-2158-3

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  • DOI: https://doi.org/10.1007/s00204-018-2158-3

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