Evidence map›Paper›PMID 33097661›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Targeted CRISPR screening identifies PRMT5 as synthetic lethality combinatorial target with gemcitabine in pancreatic cancer cells.

Xiaolong Wei, Jiekun Yang, Sara J Adair, Harun Ozturk, Cem Kuscu, Kyung Yong Lee, William J Kane, Patrick E O'Hara, Denis Liu, Yusuf Mert Demirlenk and 5 more

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 1 pooled it
5.8field-weighted citation impact, top 3% 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

71 citing papers in PubMed, 1 synthesis or guideline pooled it, 108 citations in OpenAlex.

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11 more citing papers are in PubMed but not listed here.

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

15 authors at 3 institutions in 1 country.

Xiaolong WeiDepartment of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA 22903.
Jiekun YangDepartment of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA 22903.
Sara J AdairDepartment of Surgery, University of Virginia School of Medicine, Charlottesville, VA 22903.ORCID 0000-0002-9973-4252
Harun OzturkFeinberg School of Medicine, Robert Lurie Comprehensive Cancer Center, Department of Obstetrics and Gynecology, The Northwestern University, Chicago, IL 60611.
Cem KuscuTransplant Research Institute, University of Tennessee Health Science Center, Memphis, TN 38163.
Kyung Yong LeeDepartment of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA 22903.ORCID 0000-0003-2701-0762
William J KaneDepartment of Surgery, University of Virginia School of Medicine, Charlottesville, VA 22903.
Patrick E O'HaraDepartment of Surgery, University of Virginia School of Medicine, Charlottesville, VA 22903.ORCID 0000-0002-9077-1794
Denis LiuDepartment of Surgery, University of Virginia School of Medicine, Charlottesville, VA 22903.
Yusuf Mert DemirlenkDepartment of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA 22903.ORCID 0000-0003-0904-0378
Alaa Hamdi HabiebDepartment of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA 22903.
Ebru YilmazDepartment of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA 22903.ORCID 0000-0003-1033-1797
Anindya DuttaDepartment of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA 22903.ORCID 0000-0002-4319-0073
Todd W BauerDepartment of Surgery, University of Virginia School of Medicine, Charlottesville, VA 22903.ORCID 0000-0002-9516-1848
Mazhar AdliDepartment of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA 22903; adli@northwestern.edu.ORCID 0000-0003-4740-9594
University of Virginia · USNorthwestern University · USUniversity of Tennessee Health Science Center · US

Funding

Women's Oncology Program - WONP30CA044579 · NCI · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI Thomas P. Loughran · 1987 to 2026
$72.1M
The role of MCM8-9 in genomic instability of cancersR01CA060499 · NCI · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI Anindya Dutta · 1994 to 2026
$8.6M
Identifying the Drivers and Targeting Chemo Resistance in Ovarian CancerR01CA211648 · NCI · UNIVERSITY OF VIRGINIA · PI ADLI, MAZHAR · 2017 to 2021
$2.1M
Summer Research Experience in Cancer(SuRE-C)R25CA206972 · NCI · UNIVERSITY OF VIRGINIA · PI ADRIAN J HALME, Hui Zong · 2017 to 2026
$2.0M
NCI NIH HHS P30 CA044579NCI NIH HHS R01 CA060499NCI NIH HHS R01 CA211648
6 · The paper itself

Abstract

Pancreatic ductal adenocarcinoma (PDAC) remains one of the most challenging cancers to treat. Due to the asymptomatic nature of the disease and lack of curative treatment modalities, the 5-y survival rate of PDAC patients is one of the lowest of any cancer type. The recurrent genetic alterations in PDAC are yet to be targeted. Therefore, identification of effective drug combinations is desperately needed. Here, we performed an in vivo CRISPR screen in an orthotopic patient-derived xenograft (PDX) model to identify gene targets whose inhibition creates synergistic tumor growth inhibition with gemcitabine (Gem), a first- or second-line chemotherapeutic agent for PDAC treatment. The approach revealed protein arginine methyltransferase gene 5 (PRMT5) as an effective druggable candidate whose inhibition creates synergistic vulnerability of PDAC cells to Gem. Genetic depletion and pharmacological inhibition indicate that loss of PRMT5 activity synergistically enhances Gem cytotoxicity due to the accumulation of excessive DNA damage. At the molecular level, we show that inhibition of PRMT5 results in RPA depletion and impaired homology-directed DNA repair (HDR) activity. The combination (Gem + PRMT5 inhibition) creates conditional lethality and synergistic reduction of PDAC tumors in vivo. The findings demonstrate that unbiased genetic screenings combined with a clinically relevant model system is a practical approach in identifying synthetic lethal drug combinations for cancer treatment.

Indexed as

Protein-Arginine N-MethyltransferasesAnimalsAntineoplastic AgentsCell Line, TumorCell SurvivalCRISPR-Cas SystemsDeoxycytidineDrug DevelopmentGemcitabineGene Knockout TechniquesHumansMice, NudePancreatic NeoplasmsXenograft Model Antitumor AssaysAntineoplastic AgentsDeoxycytidineGemcitabinePRMT5 protein, humanProtein-Arginine N-Methyltransferasescancer genomics and epigenomicscombinatorial drugs targetsCRISPR screeningpancreatic cancersynthetic lethality

Identifiers

PMID33097661
PMCPMC7668168
OpenAlexW3094420004

What OpenQuestion holds

Textmetadata
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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.