Evidence map›Paper›PMID 24307657›Full record

ArticleThe Prostate2014

Inhibition of constitutively active Stat3 reverses enzalutamide resistance in LNCaP derivative prostate cancer cells.

Chengfei Liu, Yezi Zhu, Wei Lou, Yuanyuan Cui, Christopher P Evans, Allen C Gao

Open access · greenAbstract read
In one paragraph

Article in The Prostate, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed
3.8field-weighted citation impact, top 6% 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

72 citing papers in PubMed, 100 citations in OpenAlex.

  1. Trial
  2. Review
  3. Myosteatosis Predicts Poor Prognosis in Patients With Castration-Resistant Prostate Cancer Treated With Enzalutamide.International journal of urology : official journal of the Japanese Urological Association · 2026
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  4. Prostate Cancer: Etiology, Diagnosis, and Treatment.Serican journal of medicine · 2026
    Article
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12 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

6 authors at 2 institutions in 1 country.

Chengfei LiuDepartment of Urology, University of California at Davis, Sacramento, California.
Yezi Zhu
Wei Lou
Yuanyuan Cui
Christopher P Evans
Allen C Gao
University of California, Davis · USUC Davis Comprehensive Cancer Center

Funding

Novel roles of microRNA in androgen receptor signalingR01CA168601 · NCI · UNIVERSITY OF CALIFORNIA AT DAVIS · PI GAO, ALLEN C. · 2013 to 2017
$1.5M
Interleukin-6 and castration-resistant prostate cancerR01CA140468 · NCI · UNIVERSITY OF CALIFORNIA AT DAVIS · PI GAO, ALLEN C. · 2010 to 2014
$1.5M
Role of Rho GDP dissociation inhibitors in androgen signaling in prostate cancerI01BX000526 · VA · VA NORTHERN CALIFORNIA HEALTH CARE SYS · PI GAO, ALLEN C. · 2011 to 2013
–
BLRD VA I01 BX000526NCI NIH HHS CA140468NCI NIH HHS CA168601NCI NIH HHS R01 CA140468NCI NIH HHS R01 CA168601
6 · The paper itself

Abstract

purposeUse of enzalutamide has improved the treatment of advanced prostate cancer. However, resistance to enzalutamide can develop frequently in initial responders. This study aimed to test whether overexpression of IL-6 and constitutive activation of Stat3 in prostate cancer cells increase resistance to enzalutamide. EXPERIMENTAL

designSensitivity of prostate cancer cells to enzalutamide was tested using cell growth assays and clonogenic assays. Quantitative reverse transcription-PCR, ELISA, and Western blotting were performed to detect expression levels of IL-6, c-Myc, survivin, and AR. Expression of Stat3 was downregulated using siRNA specific to Stat3. ChIP assay was performed to examine recruitment of AR to the PSA promoter.

resultsProstate cancer cells expressing autocrine IL-6 are resistant to enzalutamide and autocrine IL-6 leads to constitutive activation of Stat3 and its target genes. Down regulation of Stat3 led to an increase in sensitivity of prostate cancer cells to enzalutamide. Overexpression of constitutively active Stat3 in prostate cancer cells induced resistance to enzalutamide treatment. Constitutively active Stat3 also enhanced the recruitment of AR to PSA promoter which could not be disrupted by enzalutamide. The Stat3 inhibitor AG490 reversed enzalutamide resistance in prostate cancer cells, while combination treatment with enzalutamide and AG490 significantly inhibited cell growth and induced cell apoptosis.

conclusionsThis study demonstrates that the autocrine IL-6 pathway induces enzalutamide resistance in prostate cancer cells via the constitutive activation of Stat3. Co-targeting IL6-Stat3 pathway with enzalutamide may be utilized for treatment of advanced prostate cancer.

Indexed as

AdenocarcinomaAntineoplastic AgentsApoptosisBenzamidesCell Line, TumorDown-RegulationDrug Resistance, NeoplasmEnzyme InhibitorsHumansInterleukin-6In Vitro TechniquesMaleNitrilesPhenylthiohydantoinProstatic NeoplasmsRNA, Small Interferingalpha-cyano-(3,4-dihydroxy)-N-benzylcinnamideAntineoplastic AgentsBenzamidesenzalutamideEnzyme InhibitorsInterleukin-6NitrilesPhenylthiohydantoinRNA, Small InterferingSTAT3 protein, humanSTAT3 Transcription FactorTyrphostinsenzalutamideInterleukin-6prostate cancerStat3

Identifiers

PMID24307657
PMCPMC4437226
OpenAlexW2010072924

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.