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@ARTICLE{Vichi:127703,
author = {S. Vichi and J. Sandström von Tobel and S. Gemma and S.
Stanzel and A. Kopp-Schneider$^*$ and F. Monnet-Tschudi and
E. Testai and M. G. Zurich},
title = {{C}ell type-specific expression and localization of
cytochrome {P}450 isoforms in tridimensional aggregating rat
brain cell cultures.},
journal = {Toxicology in vitro},
volume = {30},
number = {1 Pt A},
issn = {0887-2333},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {DKFZ-2017-03726},
pages = {176 - 184},
year = {2015},
abstract = {Within the Predict-IV FP7 project a strategy for
measurement of in vitro biokinetics was developed, requiring
the characterization of the cellular model used, especially
regarding biotransformation, which frequently depends on
cytochrome P450 (CYP) activity. The extrahepatic in situ
CYP-mediated metabolism is especially relevant in target
organ toxicity. In this study, the constitutive mRNA levels
and protein localization of different CYP isoforms were
investigated in 3D aggregating brain cell cultures. CYP1A1,
CYP2B1/B2, CYP2D2/4, CYP2E1 and CYP3A were expressed; CYP1A1
and 2B1 represented almost $80\%$ of the total mRNA content.
Double-immunolabeling revealed their presence in astrocytes,
in neurons, and to a minor extent in oligodendrocytes,
confirming the cell-specific localization of CYPs in the
brain. These results together with the recently reported
formation of an amiodarone metabolite following repeated
exposure suggest that this cell culture system possesses
some metabolic potential, most likely contributing to its
high performance in neurotoxicological studies and support
the use of this model in studying brain neurotoxicity
involving mechanisms of toxication/detoxication.},
keywords = {Isoenzymes (NLM Chemicals) / Cytochrome P-450 Enzyme System
(NLM Chemicals)},
cin = {C060},
ddc = {610},
cid = {I:(DE-He78)C060-20160331},
pnm = {313 - Cancer risk factors and prevention (POF3-313)},
pid = {G:(DE-HGF)POF3-313},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:25795400},
doi = {10.1016/j.tiv.2015.03.005},
url = {https://inrepo02.dkfz.de/record/127703},
}