Print Email Facebook Twitter Detection of the mechanism of immunotoxicity of cyclosporine A in murine in vitro and in vivo models Title Detection of the mechanism of immunotoxicity of cyclosporine A in murine in vitro and in vivo models Author Schmeits, P.C.J. Schaap, M.M. Luijten, M. van Someren, E. Boorsma, A. van Loveren, H. Peijnenburg, A.A.C.M. Hendriksen, P.J.M. Publication year 2015 Abstract Transcriptomics in combination with in vitro cell systems is a powerful approach to unravel modes of action of toxicants. An important question is to which extent the modes of action as revealed by transcriptomics depend on cell type, species and study type (in vitro or in vivo). To acquire more insight into this, we assessed the transcriptomic effects of the immunosuppressive drug cyclosporine A (CsA) upon 6 h of exposure of the mouse cytotoxic T cell line CTLL-2, the thymoma EL-4 and primary splenocytes and compared these to the effects in spleens of mice orally treated with CsA for 7 days. EL-4 and CTLL-2 cells showed the highest similarities in response. CsA affected many genes in primary splenocytes that were not affected in EL-4 or CTLL-2. Pathway analysis demonstrated that CsA upregulated the unfolded protein response, endoplasmic reticulum stress and NRF2 activation in EL-4 cells, CTLL-2 cells and primary mouse splenocytes but not in mouse spleen in vivo. As expected, CsA downregulated cell cycle and immune response in splenocytes in vitro, spleens in vivo as well as CTLL-2 in vitro. Genes up- and downregulated in human Jurkat, HepG2 and renal proximal tubular cells were similarly affected in CTLL-2, EL-4 and primary splenocytes in vitro. In conclusion, of the models tested in this study, the known mechanism of immunotoxicity of CsA is best represented in the mouse cytotoxic T cell line CTLL-2. This is likely due to the fact that this cell line is cultured in the presence of a T cell activation stimulant (IL-2) making it more suitable to detect inhibitory effects on T cell activation. © 2014, Springer-Verlag Berlin Heidelberg. Chemicals/CAS: cyclosporin A, 59865-13-3, 63798-73-2; interleukin 2, 85898-30-2 Manufacturers: Sigma, Netherlands Subject LifeRAPID - Risk Analysis for Products in DevelopmentELSS - Earth, Life and Social SciencesBiomedical InnovationBiologyHealthy LivingC57BL/6CTLL-2Cyclosporine AInterspecies comparisonSplenocytesInterleukin 2Messenger RNATranscription factor Nrf2Animal cellAnimal experimentCell cycle regulationControlled studyCytotoxic T lymphocyteDown regulationEndoplasmic reticulum stressHepG2 cell lineHumanHuman cellImmune responseImmunotoxicityIn vitro studyIn vivo studyJurkat cell lineMaleMouseNonhumanDpleen cellT lymphocyte activationThymoma cell lineTranscriptomicsUnfolded protein responseUpregulation To reference this document use: http://resolver.tudelft.nl/uuid:d5268521-be0c-474c-b932-3c9c77e83509 DOI https://doi.org/10.1007/s00204-014-1365-9 TNO identifier 530275 ISSN 0340-5761 Source Archives of Toxicology, 89 (12), 2325-2337 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.