Evidence map›Paper›PMID 35013318›Full record

ArticleNPJ breast cancer2022

Endoplasmic reticulum stress inhibits AR expression via the PERK/eIF2α/ATF4 pathway in luminal androgen receptor triple-negative breast cancer and prostate cancer.

Xiaoli Li, Duanfang Zhou, Yongqing Cai, Xiaoping Yu, Xiangru Zheng, Bo Chen, Wenjun Li, Hongfang Zeng, Moustapha Hassan, Ying Zhao and 1 more

Open access · goldAbstract read
In one paragraph

Article in NPJ breast cancer, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.9field-weighted citation impact, top 9% 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, 28 citations in OpenAlex.

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  16. Endoplasmic reticulum stress targeted therapy for breast cancer.Cell communication and signaling : CCS · 2022
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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

11 authors at 4 institutions in 2 countries.

Xiaoli Li *Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, P.R. China.
Duanfang Zhou *Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, P.R. China.
Yongqing CaiDepartment of Pharmacy, Army Medical Center of PLA, Chongqing, 400042, P.R. China.
Xiaoping YuDepartment of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, P.R. China.
Xiangru ZhengDepartment of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R. China.
Bo ChenDepartment of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, P.R. China.
Wenjun LiDepartment of Pharmacy, The Third Affiliated Hospital of Chongqing Medical University (Gener Hospital), Chongqing, 401120, P.R. China.
Hongfang ZengDepartment of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, P.R. China.
Moustapha HassanExperimental Cancer Medicine, Division of Bio-molecular and Cellular Medicine (BCM), Department of Laboratory Medicine, Karolinska Institutet, Huddinge, 141 86, Stockholm, Sweden.
Ying ZhaoExperimental Cancer Medicine, Division of Bio-molecular and Cellular Medicine (BCM), Department of Laboratory Medicine, Karolinska Institutet, Huddinge, 141 86, Stockholm, Sweden.
Weiying ZhouDepartment of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, P.R. China. wyzhou0118@163.com.ORCID http://orcid.org/0000-0001-8057-8379
Chongqing University · CNKarolinska Institutet · SEThe Affiliated Yongchuan Hospital of Chongqing Medical University · CNArmy Medical University · CN

Funding

National Natural Science Foundation of China (National Science Foundation of China) 81874100
6 · The paper itself

Abstract

Androgen receptor (AR) is an important prognostic marker and therapeutic target in luminal androgen receptor triple-negative breast cancer (LAR TNBC) and prostate cancer (PCa). Endoplasmic reticulum (ER) stress may activate the unfolded protein response (UPR) to regulate associated protein expression and is closely related to tumor growth and drug resistance. The effect of ER stress on AR expression and signaling remains unclear. Here, we focused on the regulation and underlying mechanism of AR expression induced by ER stress in LAR TNBC and PCa. Western blotting and quantitative RT-PCR results showed that AR expression was markedly decreased under ER stress induced by thapsigargin and brefeldin A, and this effect was dependent on PERK/eIF2α/ATF4 signaling activation. Chromatin immunoprecipitation-PCR and luciferase reporter gene analysis results showed that ATF4 bound to the AR promoter regions to inhibit its activity. Moreover, ATF4 overexpression inhibited tumor proliferation and AR expression both in vitro and in vivo. Collectively, these results demonstrated that ER stress could decrease AR mRNA and protein levels via PERK/eIF2α/ATF4 signaling in LAR TNBC and PCa. Targeting the UPR may be a treatment strategy for AR-dependent TNBC and PCa.

Identifiers

PMID35013318
PMCPMC8748692
OpenAlexW4205946005

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Registered trials

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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.