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@ARTICLE{Stafford:132562,
author = {W. C. Stafford and X. Peng and M. H. Olofsson and X. Zhang
and D. K. Luci and L. Lu and Q. Cheng and L. Trésaugues and
T. S. Dexheimer and N. P. Coussens and M. Augsten$^*$ and H.
M. Ahlzén and O. Orwar and A. Östman and S. Stone-Elander
and D. J. Maloney and A. Jadhav and A. Simeonov and S.
Linder and E. S. J. Arnér},
title = {{I}rreversible inhibition of cytosolic thioredoxin
reductase 1 as a mechanistic basis for anticancer therapy.},
journal = {Science translational medicine},
volume = {10},
number = {428},
issn = {1946-6242},
address = {Washington, DC},
publisher = {AAAS},
reportid = {DKFZ-2018-00240},
pages = {eaaf7444 -},
year = {2018},
abstract = {Cancer cells adapt to their inherently increased oxidative
stress through activation of the glutathione (GSH) and
thioredoxin (TXN) systems. Inhibition of both of these
systems effectively kills cancer cells, but such broad
inhibition of antioxidant activity also kills normal cells,
which is highly unwanted in a clinical setting. We therefore
evaluated targeting of the TXN pathway alone and, more
specifically, selective inhibition of the cytosolic
selenocysteine-containing enzyme TXN reductase 1 (TXNRD1).
TXNRD1 inhibitors were discovered in a large screening
effort and displayed increased specificity compared to
pan-TXNRD inhibitors, such as auranofin, that also inhibit
the mitochondrial enzyme TXNRD2 and additional targets. For
our lead compounds, TXNRD1 inhibition correlated with cancer
cell cytotoxicity, and inhibitor-triggered conversion of
TXNRD1 from an antioxidant to a pro-oxidant enzyme
correlated with corresponding increases in cellular
production of H2O2In mice, the most specific TXNRD1
inhibitor, here described as TXNRD1 inhibitor 1 (TRi-1),
impaired growth and viability of human tumor xenografts and
syngeneic mouse tumors while having little mitochondrial
toxicity and being better tolerated than auranofin. These
results display the therapeutic anticancer potential of
irreversibly targeting cytosolic TXNRD1 using small
molecules and present potent and selective TXNRD1
inhibitors. Given the pronounced up-regulation of TXNRD1 in
several metastatic malignancies, it seems worthwhile to
further explore the potential benefit of specific
irreversible TXNRD1 inhibitors for anticancer therapy.},
cin = {A190},
ddc = {500},
cid = {I:(DE-He78)A190-20160331},
pnm = {311 - Signalling pathways, cell and tumor biology
(POF3-311)},
pid = {G:(DE-HGF)POF3-311},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29444979},
doi = {10.1126/scitranslmed.aaf7444},
url = {https://inrepo02.dkfz.de/record/132562},
}