Evidence map›Paper›PMID 26160840›Full record

ArticleOncotarget2015

Androgen receptor splice variants circumvent AR blockade by microtubule-targeting agents.

Guanyi Zhang, Xichun Liu, Jianzhuo Li, Elisa Ledet, Xavier Alvarez, Yanfeng Qi, Xueqi Fu, Oliver Sartor, Yan Dong, Haitao Zhang

Open access · diamondAbstract read
In one paragraph

Article in Oncotarget, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed, 1 pooled it
10.5field-weighted citation impact, top 1% 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

55 citing papers in PubMed, 1 synthesis or guideline pooled it, 92 citations in OpenAlex.

  1. Pooled it
  2. Expression of AR-V7 and ARvClinical cancer research : an official journal of the American Association for Cancer Research · 2019
    Trial
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Observational
  13. AR Structural Variants and Prostate Cancer.Advances in experimental medicine and biology · 2022
    Article
  14. Article
  15. Effect of ethanol and cocaine on [Molecular biology reports · 2021
    Article
  16. Review
  17. Sildenafil Potentiates the Therapeutic Efficacy of Docetaxel in Advanced Prostate Cancer by Stimulating NO-cGMP Signaling.Clinical cancer research : an official journal of the American Association for Cancer Research · 2020
    Article
  18. Article
  19. Article
  20. Article
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

10 authors at 2 institutions in 2 countries.

Guanyi ZhangCollege of Life Sciences, Jilin University, Changchun, P.R. China.
Xichun LiuDepartment of Pathology, Tulane University School of Medicine, New Orleans, Louisiana, USA.
Jianzhuo LiCollege of Life Sciences, Jilin University, Changchun, P.R. China.
Elisa LedetDepartment of Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA.
Xavier AlvarezDivision of Comparative Pathology, Tulane National Primate Research Center, Covington, Louisiana, USA.
Yanfeng QiDepartment of Structural and Cellular Biology, Tulane University School of Medicine, New Orleans, Louisiana, USA.
Xueqi FuCollege of Life Sciences, Jilin University, Changchun, P.R. China.
Oliver SartorDepartment of Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA.
Yan DongCollege of Life Sciences, Jilin University, Changchun, P.R. China.
Haitao ZhangDepartment of Pathology, Tulane University School of Medicine, New Orleans, Louisiana, USA.
Tulane University · USJilin University · CN

Funding

Tulane NPRC SPF Sheltered Outdoor Enclosure ExpansionP51OD011104 · OD · TULANE UNIVERSITY OF LOUISIANA · PI L Lee HAMM · 2012 to 2026
$142.4M
Mentoring a Cancer Genetics ProgramP20GM103518 · NIGMS · TULANE UNIVERSITY OF LOUISIANA · PI DEININGER, PRESCOTT L. · 2012 to 2013
$4.3M
An inevitable mechanism of resistance to androgen-directed therapyR01CA188609 · NCI · TULANE UNIVERSITY OF LOUISIANA · PI DONG, YAN · 2014 to 2018
$1.6M
NCI NIH HHS R01 CA188609NCI NIH HHS R01CA188609NIGMS NIH HHS 5P20GM103518-10NIGMS NIH HHS P20 GM103518NIH HHS P51 OD011104
6 · The paper itself

Abstract

Docetaxel-based chemotherapy is established as a first-line treatment and standard of care for patients with metastatic castration-resistant prostate cancer. However, half of the patients do not respond to treatment and those do respond eventually become refractory. A better understanding of the resistance mechanisms to taxane chemotherapy is both urgent and clinical significant, as taxanes (docetaxel and cabazitaxel) are being used in various clinical settings. Sustained signaling through the androgen receptor (AR) has been established as a hallmark of CRPC. Recently, splicing variants of AR (AR-Vs) that lack the ligand-binding domain (LBD) have been identified. These variants are constitutively active and drive prostate cancer growth in a castration-resistant manner. In taxane-resistant cell lines, we found the expression of a major variant, AR-V7, was upregulated. Furthermore, ectopic expression of two clinically relevant AR-Vs (AR-V7 and ARV567es), but not the full-length AR (AR-FL), reduced the sensitivities to taxanes in LNCaP cells. Treatment with taxanes inhibited the transcriptional activity of AR-FL, but not those of AR-Vs. This could be explained, at least in part, due to the inability of taxanes to block the nuclear translocation of AR-Vs. Through a series of deletion constructs, the microtubule-binding activity was mapped to the LBD of AR. Finally, taxane-induced cytoplasm sequestration of AR-FL was alleviated when AR-Vs were present. These findings provide evidence that constitutively active AR-Vs maintain the AR signaling axis by evading the inhibitory effects of microtubule-targeting agents, suggesting that these AR-Vs play a role in resistance to taxane chemotherapy.

Indexed as

Signal TransductionActive Transport, Cell NucleusAlternative SplicingAnimalsCell Line, TumorChlorocebus aethiopsCOS CellsCytoplasmDocetaxelDrug Resistance, NeoplasmFluorescence Recovery After PhotobleachingGene DeletionGene Expression Regulation, NeoplasticHumansLigandsMaleAR protein, humancabazitaxelDocetaxelLigandsReceptors, AndrogenTaxoidsandrogen receptormicrotubuleprostate cancersplice variantstaxane chemotherapy

Identifiers

PMID26160840
PMCPMC4695123
OpenAlexW1654777185

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.