Evidence map›Paper›PMID 33462394›Full record

ArticleNature cell biology2021

ALC1 links chromatin accessibility to PARP inhibitor response in homologous recombination-deficient cells.

Priyanka Verma, Yeqiao Zhou, Zhendong Cao, Peter V Deraska, Moniher Deb, Eri Arai, Weihua Li, Yue Shao, Laura Puentes, Yiwen Li and 5 more

Open access · greenAbstract read
In one paragraph

Article in Nature cell biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 101 papers.

0numbers the graph read from it
0cells of the map it votes in
101citing papers in PubMed
10.5field-weighted citation impact, top 1% 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

101 citing papers in PubMed, 144 citations in OpenAlex.

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41 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 2 institutions in 1 country.

Priyanka VermaDepartment of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Yeqiao ZhouDepartments of Pathology and Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Zhendong CaoDepartment of Cancer Biology, Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Peter V DeraskaDepartment of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Moniher DebDepartment of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Eri AraiDepartment of Cancer Biology, Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Weihua LiDepartment of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Yue ShaoDepartment of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Laura PuentesDepartment of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Yiwen LiDepartment of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Sonali PatankarDepartment of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Robert H MachDepartment of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Robert B FaryabiDepartments of Pathology and Cancer Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Junwei ShiDepartment of Cancer Biology, Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. jushi@upenn.edu.ORCID http://orcid.org/0000-0002-8427-6316
Roger A GreenbergDepartment of Cancer Biology, Penn Center for Genome Integrity, Basser Center for BRCA, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. rogergr@pennmedicine.upenn.edu.ORCID http://orcid.org/0000-0003-1326-8981
University of Pennsylvania · USPenn Center for AIDS Research · US

Funding

Roles of Chromatin Modification in BRCA1 Dependent DNA RepairR01CA174904 · NCI · UNIVERSITY OF PENNSYLVANIA · PI Roger A Greenberg · 2013 to 2026
$4.8M
DNA Double Strand Break Chromatin Alterations and Genome IntegrityR01GM101149 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI GREENBERG, ROGER A · 2013 to 2025
$4.0M
NCI NIH HHS R01 CA174904NIGMS NIH HHS R01 GM101149
6 · The paper itself

Abstract

The response to poly(ADP-ribose) polymerase inhibitors (PARPi) is dictated by homologous recombination (HR) DNA repair and the abundance of lesions that trap PARP enzymes. It remains unclear, however, if the established role of PARP in promoting chromatin accessibility impacts viability in these settings. Using a CRISPR-based screen, we identified the PAR-binding chromatin remodeller ALC1/CHD1L as a key determinant of PARPi toxicity in HR-deficient cells. ALC1 loss reduced viability of breast cancer gene (BRCA)-mutant cells and enhanced sensitivity to PARPi by up to 250-fold, while overcoming several resistance mechanisms. ALC1 deficiency reduced chromatin accessibility concomitant with a decrease in the association of base damage repair factors. This resulted in an accumulation of replication-associated DNA damage, increased PARP trapping and a reliance on HR. These findings establish PAR-dependent chromatin remodelling as a mechanistically distinct aspect of PARPi responses and therapeutic target in HR-deficient cancers.

Indexed as

BRCA1 ProteinBRCA2 ProteinCell Line, TumorCell ProliferationChromatinChromatin Assembly and DisassemblyChromosome AberrationsCRISPR-Cas SystemsDNA-Binding ProteinsDNA HelicasesDNA RepairEpistasis, GeneticGenomic InstabilityGreen Fluorescent ProteinsHomologous RecombinationHumansBRCA1 ProteinBRCA2 ProteinCHD1L protein, humanChromatinDNA-Binding ProteinsDNA HelicasesGreen Fluorescent ProteinsMethyl MethanesulfonateolaparibPhthalazinesPiperazinesPoly Adenosine Diphosphate RibosePoly(ADP-ribose) Polymerase InhibitorsPoly(ADP-ribose) Polymerases

Identifiers

PMID33462394
PMCPMC7880902
OpenAlexW3121830305

What OpenQuestion holds

Textmetadata
LicenceTDM
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.