Evidence map›Paper›PMID 25252916›Full record

ArticleCancer research2014

Plk1 inhibition enhances the efficacy of androgen signaling blockade in castration-resistant prostate cancer.

Zhe Zhang, Xianzeng Hou, Chen Shao, Junjie Li, Ji-Xin Cheng, Shihuan Kuang, Nihal Ahmad, Timothy Ratliff, Xiaoqi Liu

Open access · bronzeAbstract read
In one paragraph

Article in Cancer research, 2014. 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
3.0field-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

71 citing papers in PubMed, 1 synthesis or guideline pooled it, 113 citations in OpenAlex.

  1. Pooled it
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  11. PLK1 phosphorylates WRN at replication forks.The Journal of pharmacology and experimental therapeutics · 2025
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11 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 2 countries.

Zhe ZhangDepartment of Biochemistry, Purdue University, West Lafayette, Indiana. State Key Laboratory for Agrobiotechnology and Department of Microbiology, China Agricultural University, Beijing, China.
Xianzeng HouDepartment of Biochemistry, Purdue University, West Lafayette, Indiana. Department of Neurosurgery, Qianfoshan Hospital affiliated to Shandong University, Jinan, China.
Chen ShaoDepartment of Biochemistry, Purdue University, West Lafayette, Indiana.
Junjie LiDepartment of Biomedical Engineering, Purdue University, West Lafayette, Indiana.
Ji-Xin ChengDepartment of Biomedical Engineering, Purdue University, West Lafayette, Indiana.
Shihuan KuangDepartment of Animal Sciences, Purdue University, West Lafayette, Indiana.
Nihal AhmadDepartment of Dermatology, University of Wisconsin, Madison, Wisconsin.
Timothy RatliffPurdue Center for Cancer Research, Purdue University, West Lafayette, Indiana.
Xiaoqi LiuDepartment of Biochemistry, Purdue University, West Lafayette, Indiana. Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana. liu8@purdue.edu.
Purdue University West Lafayette · USUniversity of Wisconsin–Madison · US

Funding

Transgenic Mouse Core Facility Shared Resource (TMCF-SR)P30CA023168 · NCI · PURDUE UNIVERSITY WEST LAFAYETTE · PI Andrea L Kasinski · 1985 to 2026
$43.4M
Role of Polo-Like Kinase-1 in Melanocytic TransformationR01AR059130 · NIAMS · UNIVERSITY OF WISCONSIN-MADISON · PI AHMAD, NIHAL · 2010 to 2019
$3.8M
Plk1 in Chemo-resistance of CancerR01CA157429 · NCI · UNIVERSITY OF KENTUCKY · PI XIAOQI LIU · 2011 to 2026
$3.5M
HSRD VA IIR 13-073NCI NIH HHS P30 CA023168NCI NIH HHS R01 CA157429NIAMS NIH HHS R01 AR059130NIAMS NIH HHS R01AR059130
6 · The paper itself

Abstract

Prostate cancer is thought to be driven by oxidative stress, lipid metabolism, androgen receptor (AR) signaling, and activation of the PI3K-AKT-mTOR pathway, but it is uncertain how they may become coordinated during progression to castration-resistant disease that remains incurable. The mitotic kinase polo-like kinase 1 (Plk1) is elevated in prostate cancer, where its expression is linked to tumor grade. Notably, Plk1 signaling and lipid metabolism were identified recently as two of the top five most upregulated pathways in a mouse xenograft model of human prostate cancer. Herein, we show that oxidative stress activates both the PI3K-AKT-mTOR pathway and AR signaling in a Plk1-dependent manner in prostate cells. Inhibition of the PI3K-AKT-mTOR pathway prevented oxidative stress-induced activation of AR signaling. Plk1 modulation also affected cholesteryl ester accumulation in prostate cancer via the SREBP pathway. Finally, Plk1 inhibition enhanced cellular responses to androgen signaling inhibitors (ASI) and overcame ASI resistance in both cultured prostate cancer cells and patient-derived tumor xenografts. Given that activation of AR signaling and the PI3K-AKT-mTOR pathway is sufficient to elevate SREBP-dependent expression of key lipid biosynthesis enzymes in castration-resistant prostate cancer (CRPC), our findings argued that Plk1 activation was responsible for coordinating and driving these processes to promote and sustain the development of this advanced stage of disease. Overall, our results offer a strong mechanistic rationale to evaluate Plk1 inhibitors in combination drug trials to enhance the efficacy of ASIs in CRPC.

Indexed as

Androgen AntagonistsCell Cycle ProteinsCell Line, TumorCholesterolDrug Resistance, NeoplasmHumansMaleNF-kappa BOxidative StressPhosphatidylinositol 3-KinasesPolo-Like Kinase 1Prostatic Neoplasms, Castration-ResistantProtein Serine-Threonine KinasesProto-Oncogene ProteinsProto-Oncogene Proteins c-aktSignal TransductionAndrogen AntagonistsCell Cycle ProteinsCholesterolMTOR protein, humanNF-kappa BPhosphatidylinositol 3-KinasesPolo-Like Kinase 1Protein Serine-Threonine KinasesProto-Oncogene ProteinsProto-Oncogene Proteins c-aktSREBF1 protein, humanSterol Regulatory Element Binding Protein 1TOR Serine-Threonine Kinases

Identifiers

PMID25252916
PMCPMC4233180
OpenAlexW2121417890

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.