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@ARTICLE{Kotredes:862731,
author = {Kotredes, Kevin P. and Razmpour, Roshanak and Lutton, Evan
and Alfonso-Prieto, Mercedes and Ramirez, Servio H. and
Gamero, Ana M.},
title = {{C}haracterization of cancer-associated {IDH}2 mutations
that differ in tumorigenicity, chemosensitivity and
2-hydroxyglutarate production},
journal = {OncoTarget},
volume = {10},
number = {28},
issn = {1949-2553},
address = {[S.l.]},
publisher = {Impact Journals LLC},
reportid = {FZJ-2019-02974},
pages = {2675-2692},
year = {2019},
abstract = {The family of isocitrate dehydrogenase (IDH) enzymes is
vital for cellular metabolism, as IDH1 and IDH2 are required
for the decarboxylation of isocitrate to α-ketoglutarate.
Heterozygous somatic mutations in IDH1 or IDH2 genes have
been detected in many cancers. They share the neomorphic
production of the oncometabolite (R)-2-hydroxyglutarate
[(R)-2-HG]. With respect to IDH2, it is unclear whether all
IDH2 mutations display the same or differ in tumorigenic
properties and degrees of chemosensitivity. Here, we
evaluated the three most frequent IDH2 mutations occurring
in cancer. The predicted changes to the enzyme structure
introduced by these individual mutations are supported by
the observed production of (R)-2-HG. However, their
tumorigenic properties, response to chemotherapeutic agents,
and baseline activation of STAT3 differed. Paradoxically,
the varying levels of endogenous (R)-2-HG produced by each
IDH2 mutant inversely correlated with their respective
growth rates. Interestingly, while we found that (R)-2-HG
stimulated the growth of non-transformed cells, (R)-2-HG
also displayed antitumor activity by suppressing the growth
of tumors harboring wild type IDH2. The mitogenic effect of
(R)-2-HG in immortalized cells could be switched to
antiproliferative by transformation with oncogenic RAS.
Thus, our findings show that despite their shared (R)-2-HG
production, IDH2 mutations are not alike and differ in
shaping tumor cell behavior and response to chemotherapeutic
agents. Our study also reveals that under certain
conditions, (R)-2-HG has antitumor properties.},
cin = {IAS-5 / INM-9},
ddc = {610},
cid = {I:(DE-Juel1)IAS-5-20120330 / I:(DE-Juel1)INM-9-20140121},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31105869},
doi = {10.18632/oncotarget.26848},
url = {https://juser.fz-juelich.de/record/862731},
}