Evidence map›Paper›PMID 33495297›Full record

ArticleJournal for immunotherapy of cancer2021

Targeting PARP-1 with metronomic therapy modulates MDSC suppressive function and enhances anti-PD-1 immunotherapy in colon cancer.

Mohamed A Ghonim, Salome V Ibba, Abdelmetalab F Tarhuni, Youssef Errami, Hanh H Luu, Matthew J Dean, Ali H El-Bahrawy, Dorota Wyczechowska, Ilyes A Benslimane, Luis Del Valle and 3 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Journal for immunotherapy of cancer, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 60 papers.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed
4.9field-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

60 citing papers in PubMed, 86 citations in OpenAlex.

  1. Trial
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  7. Cancer cachexia: molecular basis and therapeutic advances.Signal transduction and targeted therapy · 2026
    Review
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  15. PMN-MDSCs are responsible for immune suppression in anti-PD-1 treated TAP1 defective melanoma.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2025
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 3 institutions in 2 countries.

Mohamed A Ghonim *Stanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Salome V Ibba *Stanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Abdelmetalab F Tarhuni *Stanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Youssef Errami *Stanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Hanh H LuuStanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Matthew J DeanStanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Ali H El-BahrawyStanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.ORCID 0000-0001-6116-0428
Dorota WyczechowskaStanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Ilyes A BenslimaneStanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Luis Del ValleStanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Amir A Al-KhamiStanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Augusto C OchoaStanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
A Hamid BoularesStanley Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA hboulr@lsuhsc.edu.ORCID 0000-0001-9916-8126
Louisiana Cancer Research Center · USAl-Azhar University · EGTanta University · EG

Funding

Tracking & Evaluation CoreU54GM104940 · NIGMS · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI AUGUSTO C. OCHOA · 2012 to 2026
$69.1M
Vascular and Cardiac Function Core - "Mentoring in Cardiovascular BiologyP30GM106392 · NIGMS · LSU HEALTH SCIENCES CENTER · PI KAPUSTA, DANIEL R · 2014 to 2018
$5.5M
Translational Genomics CoreP30GM114732 · NIGMS · LSU HEALTH SCIENCES CENTER · PI OCHOA, AUGUSTO C. · 2015 to 2019
$5.2M
Understanding and Addressing Cancer Health Disparities in LouisianaP20CA233374 · NCI · LSU HEALTH SCIENCES CENTER · PI MIELE, LUCIO · 2018 to 2020
$2.9M
NCI NIH HHS P20 CA233374NIGMS NIH HHS P30 GM106392NIGMS NIH HHS P30 GM114732NIGMS NIH HHS U54 GM104940
6 · The paper itself

Abstract

backgroundPoly(ADP-ribose) polymerase (PARP) inhibitors (eg, olaparib) are effective against BRCA-mutated cancers at/near maximum tolerated doses by trapping PARP-1 on damaged chromatin, benefitting only small patient proportions. The benefits of targeting non-DNA repair aspects of PARP with metronomic doses remain unexplored.

methodsColon epithelial cells or mouse or human bone marrow (BM)-derived-myeloid-derived suppressor cells (MDSCs) were stimulated to assess the effect of partial PARP-1 inhibition on inflammatory gene expression or immune suppression. Mice treated with azoxymethane/four dextran-sulfate-sodium cycles or

resultsPartial PARP-1 inhibition, via gene heterozygosity or a moderate dose of olaparib, protected against colitis-mediated/

conclusionsThese results support a paradigm-shifting concept that expands the utility of PARP inhibitor and encourage testing metronomic dosing of PARP inhibitor to enhance the efficacy of checkpoint inhibitor-based immunotherapies in cancer.

Indexed as

Administration, MetronomicAnimalsAzoxymethaneCell Line, TumorColitisColonic NeoplasmsDextran SulfateDrug SynergismHumansImmune Checkpoint InhibitorsMiceMyeloid-Derived Suppressor CellsPhthalazinesPiperazinesPoly(ADP-ribose) Polymerase InhibitorsXenograft Model Antitumor AssaysAzoxymethaneDextran SulfateImmune Checkpoint InhibitorsolaparibPhthalazinesPiperazinesPoly(ADP-ribose) Polymerase Inhibitorscombinationdrug therapyimmunotherapyprogrammed cell death 1 receptortranslational medical researchtumor microenvironment

Identifiers

PMID33495297
PMCPMC7839867
OpenAlexW3121181609

What OpenQuestion holds

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LicenceCC BY-NC
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.