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@ARTICLE{Mircetic:274230,
author = {J. Mircetic$^*$ and A. Camgöz$^*$ and M. Abohawya$^*$ and
L. Ding and J. Dietzel and S. G. Tobar and M.
Paszkowski-Rogacz and T. Seidlitz and T. Schmäche and M.-C.
Mehnert and O. Sidorova and J. Weitz and F. Buchholz and D.
E. Stange$^*$},
title = {{CRISPR}/{C}as9 {S}creen in {G}astric {C}ancer
{P}atient-{D}erived {O}rganoids {R}eveals {KDM}1{A}-{NDRG}1
{A}xis as a {T}argetable {V}ulnerability.},
journal = {Small Methods},
volume = {7},
number = {6},
issn = {2366-9608},
address = {Weinheim},
publisher = {WILEY-VCH Verlag GmbH $\&$ Co. KGaA},
reportid = {DKFZ-2023-00516},
pages = {e2201605},
year = {2023},
note = {2023 Jun;7(6):e2201605},
abstract = {Viability CRISPR screens have proven indispensable in
parsing genome function. However, their application in new,
more physiologically relevant culturing systems like
patient-derived organoids (PDOs) has been much slower. To
probe epigenetic contribution to gastric cancer (GC), the
third leading cause of cancer-related deaths worldwide, the
first negative selection CRISPR screen in GC PDOs that
faithfully preserve primary tumor characteristics is
performed. Extensive quality control measurements showing
feasibility of CRISPR screens in primary organoid culture
are provided. The screen reveals the histone lysine
demethylase-1A (KDM1A) to constitute a GC vulnerability.
Both genetic and pharmacological inhibition of KDM1A cause
organoid growth retardation. Further, it is shown that most
of KDM1A cancer-supporting functions center on repression of
N-myc downstream regulates gene-1 (NDRG1). De-repression of
NDRG1 by KDM1A inhibitors (KDM1Ai) causes inhibition of Wnt
signaling and a strong G1 cell cycle arrest. Finally, by
profiling 20 GC PDOs, it is shown that NDRG1 upregulation
predicts KDM1Ai response with $100\%$ sensitivity and $82\%$
specificity in the tested cohort. Thus, this work pioneers
the use of negative selection CRISPR screens in
patient-derived organoids, identifies a marker of KDM1Ai
response, and accordingly a cohort of patients who may
benefit from such therapy.},
keywords = {CRISPR screen (Other) / KDM1A-NDRG1 axis (Other) /
epigenetic regulators (Other) / gastric cancer (Other) /
patient-derived organoids (Other)},
cin = {DD01 / B062 / HD01},
ddc = {620},
cid = {I:(DE-He78)DD01-20160331 / I:(DE-He78)B062-20160331 /
I:(DE-He78)HD01-20160331},
pnm = {312 - Funktionelle und strukturelle Genomforschung
(POF4-312)},
pid = {G:(DE-HGF)POF4-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:36908010},
doi = {10.1002/smtd.202201605},
url = {https://inrepo02.dkfz.de/record/274230},
}