Evidence map›Paper›PMID 33712705›Full record

ArticleOncogene2021

BRD4 inhibition sensitizes cervical cancer to radiotherapy by attenuating DNA repair.

Mengdong Ni, Jiajia Li, Haiyun Zhao, Fei Xu, Jingyi Cheng, Min Yu, Guihao Ke, Xiaohua Wu

Abstract read
PubMed Publisher
In one paragraph

Article in Oncogene, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
6.0field-weighted citation impact, top 2% 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

33 citing papers in PubMed, 84 citations in OpenAlex.

  1. Review
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  6. Hsa_circ_0030568 Promotes the Proliferation and Migration of Prostate Cancer CellsCombinatorial chemistry & high throughput screening · 2026
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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

8 authors at 1 institution in 1 country.

Mengdong Ni *Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.ORCID http://orcid.org/0000-0002-3344-7912
Jiajia Li *Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.
Haiyun Zhao *Department of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.ORCID http://orcid.org/0000-0002-7333-4402
Fei XuDepartment of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.ORCID http://orcid.org/0000-0002-9485-4298
Jingyi ChengDepartment of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.
Min YuDepartment of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China.ORCID http://orcid.org/0000-0001-9197-2101
Guihao KeDepartment of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China. kegh5734@126.com.ORCID http://orcid.org/0000-0002-1253-5083
Xiaohua WuDepartment of Gynecologic Oncology, Fudan University Shanghai Cancer Center, Shanghai, China. wu.xh@fudan.edu.cn.ORCID http://orcid.org/0000-0002-7664-8327
Shanghai Medical College of Fudan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cisplatin-based chemoradiotherapy is the recommended treatment for local advanced cervical cancer, but radioresistance remains one of the most important and unresolved clinical problems. Investigations have revealed aberrant epigenetic modifications as one of the chief culprits for the development of radioresistance. Here, we attempt to identify a radiosensitizer from an epigenetic drug synergy screen and explore the underlying mechanism. We integrated epigenetic inhibitors and radiotherapy in cervical cancer cell lines to identify potential radiosensitizers. We further verified the sensitization effect of the drug and the function of its target gene both in vitro and in vivo. Finally, we validated the clinical significance of its target gene in clinical cervical cancer specimens. We identified JQ1, a BRD4 inhibitor, as a potent radiosensitizer. Functional assays demonstrated that repressing BRD4 activity led to significant radiosensitization and potentiation of DNA damage in cervical cancer cell lines. By using RNA-seq to determine JQ1-mediated changes in transcription, we identified RAD51AP1 as a major BRD4 target gene involved in radiosensitivity. A dual-luciferase reporter assay and ChIP-qPCR showed that BRD4 binds to the promoter region of RAD51AP1 and promotes its transcription, whereas this activity was attenuated by BRD4 inhibition. The in vivo experiments also suggested a synergy between BRD4 inhibition and radiotherapy. High BRD4 expression was found to be related to a worse prognosis and radiation resistance. BRD4 inhibition sensitizes cervical cancer to radiotherapy by inhibiting RAD51AP1 transcription. The combination of JQ1 with radiotherapy merits further evaluation as a therapeutic strategy for improving local control in cervical cancer.

Indexed as

DNA RepairBromodomain Containing ProteinsCell Cycle ProteinsDown-RegulationFemaleHumansRadiation ToleranceTranscription FactorsUterine Cervical NeoplasmsXenograft Model Antitumor AssaysBRD4 protein, humanBromodomain Containing ProteinsCell Cycle ProteinsTranscription Factors

Identifiers

PMID33712705
OpenAlexW3133943231

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.