Evidence map›Paper›PMID 35933519›Full record

ArticleOncogene2022

A genome-wide CRISPR-Cas9 knockout screen identifies novel PARP inhibitor resistance genes in prostate cancer.

Malene Blond Ipsen, Ea Marie Givskov Sørensen, Emil Aagaard Thomsen, Simone Weiss, Jakob Haldrup, Anders Dalby, Johan Palmfeldt, Peter Bross, Martin Rasmussen, Jacob Fredsøe and 7 more

Abstract read
PubMed Publisher
In one paragraph

Article in Oncogene, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 31 citations in OpenAlex.

  1. Pooled it
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  6. BRCA2 reversion mutation-independent resistance to PARP inhibition through impaired DNA prereplication complex function.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. Article
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  11. Expanding the CRISPR/Cas toolkit: applications in proteomics and theranostics.Frontiers in bioengineering and biotechnology · 2025
    Review
  12. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

17 authors at 2 institutions in 1 country.

Malene Blond IpsenDepartment of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark.
Ea Marie Givskov SørensenDepartment of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark.
Emil Aagaard ThomsenDepartment of Biomedicine, Aarhus University, Aarhus, Denmark.ORCID http://orcid.org/0000-0002-2685-7745
Simone WeissDepartment of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark.
Jakob HaldrupDepartment of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark.
Anders DalbyTeitur Trophics, Aarhus, Denmark.
Johan PalmfeldtDepartment of Clinical Medicine, Aarhus University, Aarhus, Denmark.ORCID http://orcid.org/0000-0001-5585-639X
Peter BrossDepartment of Clinical Medicine, Aarhus University, Aarhus, Denmark.
Martin RasmussenDepartment of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark.ORCID http://orcid.org/0000-0001-9077-7857
Jacob FredsøeDepartment of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark.
Søren KlingenbergDepartment of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark.
Mads R JochumsenDepartment of Clinical Medicine, Aarhus University, Aarhus, Denmark.
Kirsten BoucheloucheDepartment of Clinical Medicine, Aarhus University, Aarhus, Denmark.
Benedicte Parm UlhøiDepartment of Pathology, Aarhus University Hospital, Aarhus, Denmark.
Michael BorreDepartment of Clinical Medicine, Aarhus University, Aarhus, Denmark.
Jacob Giehm MikkelsenDepartment of Biomedicine, Aarhus University, Aarhus, Denmark.
Karina Dalsgaard SørensenDepartment of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark. kdso@clin.au.dk.ORCID http://orcid.org/0000-0002-4902-5490
Aarhus University · DKAarhus University Hospital · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

DNA repair gene mutations are frequent in castration-resistant prostate cancer (CRPC), suggesting eligibility for poly(ADP-ribose) polymerase inhibitor (PARPi) treatment. However, therapy resistance is a major clinical challenge and genes contributing to PARPi resistance are poorly understood. Using a genome-wide CRISPR-Cas9 knockout screen, this study aimed at identifying genes involved in PARPi resistance in CRPC. Based on the screen, we identified PARP1, and six novel candidates associated with olaparib resistance upon knockout. For validation, we generated multiple knockout populations/clones per gene in C4 and/or LNCaP CRPC cells, which confirmed that loss of PARP1, ARH3, YWHAE, or UBR5 caused olaparib resistance. PARP1 or ARH3 knockout caused cross-resistance to other PARPis (veliparib and niraparib). Furthermore, PARP1 or ARH3 knockout led to reduced autophagy, while pharmacological induction of autophagy partially reverted their PARPi resistant phenotype. Tumor RNA sequencing of 126 prostate cancer patients identified low ARH3 expression as an independent predictor of recurrence. Our results advance the understanding of PARPi response by identifying four novel genes that contribute to PARPi sensitivity in CRPC and suggest a new model of PARPi resistance through decreased autophagy.

Indexed as

Antineoplastic AgentsProstatic Neoplasms, Castration-ResistantCell Line, TumorCRISPR-Cas SystemsDrug Resistance, NeoplasmHumansMalePoly(ADP-ribose) Polymerase InhibitorsAntineoplastic AgentsPoly(ADP-ribose) Polymerase Inhibitors

Identifiers

PMID35933519
OpenAlexW4290034386

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.