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@ARTICLE{Sidorova:179089,
author = {O. A. Sidorova and S. Sayed and M. Paszkowski-Rogacz and M.
Seifert and A. Camgöz$^*$ and I. Roeder and M.
Bornhäuser$^*$ and C. Thiede$^*$ and F. Buchholz$^*$},
title = {{RNA}i-{M}ediated {S}creen of {P}rimary {AML} {C}ells
{N}ominates {MDM}4 as a {T}herapeutic {T}arget in {NK}-{AML}
with {DNMT}3{A} {M}utations.},
journal = {Cells},
volume = {11},
number = {5},
issn = {2073-4409},
address = {Basel},
publisher = {MDPI},
reportid = {DKFZ-2022-00454},
pages = {854},
year = {2022},
abstract = {DNA-methyltransferase 3A (DNMT3A) mutations belong to the
most frequent genetic aberrations found in adult acute
myeloid leukemia (AML). Recent evidence suggests that these
mutations arise early in leukemogenesis, marking leukemic
progenitors and stem cells, and persist through
consolidation chemotherapy, providing a pool for AML
relapse. Currently, there are no therapeutic approaches
directed specifically against this cell population. To
unravel therapeutically actionable targets in mutant
DNMT3A-driven AML cells, we have performed a focused RNAi
screen in a panel of 30 primary AML samples, all carrying a
DNMT3A R882 mutation. As one of the strongest hits, we
identified MDM4 as a gene essential for proliferation of
primary DNMT3AWT/R882X AML cells. We analyzed a publicly
available RNA-Seq dataset of primary normal karyotype (NK)
AML samples and found a trend towards MDM4 transcript
overexpression particularly in DNMT3A-mutant samples.
Moreover, we found that the MDM2/4 inhibitor ALRN-6924
impairs growth of DNMT3AWT/R882X primary cells in vitro by
inducing cell cycle arrest through upregulation of p53
target genes. Our results suggest that MDM4 inhibition is a
potential target in NK-AML patients bearing DNMT3A R882X
mutations.},
keywords = {DNMT3A (Other) / MDM4 (Other) / RNAi (Other) / acute
myeloid leukemia (Other) / functional screen (Other)},
cin = {B062 / DD01},
ddc = {570},
cid = {I:(DE-He78)B062-20160331 / I:(DE-He78)DD01-20160331},
pnm = {312 - Funktionelle und strukturelle Genomforschung
(POF4-312)},
pid = {G:(DE-HGF)POF4-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:35269477},
pmc = {pmc:PMC8909053},
doi = {10.3390/cells11050854},
url = {https://inrepo02.dkfz.de/record/179089},
}