Evidence map›Paper›PMID 30453546›Full record

ArticleJournal of clinical medicine2018

Androgen Receptor Splice Variant 7 Drives the Growth of Castration Resistant Prostate Cancer without Being Involved in the Efficacy of Taxane Chemotherapy.

Yasuomi Shimizu, Satoshi Tamada, Minoru Kato, Yukiyoshi Hirayama, Yuji Takeyama, Taro Iguchi, Marianne D Sadar, Tatsuya Nakatani

Open access · goldAbstract read
In one paragraph

Article in Journal of clinical medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 10% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

  1. Pooled it
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  13. Molecular mechanisms of docetaxel resistance in prostate cancer.Cancer drug resistance (Alhambra, Calif.) · 2020
    Review
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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 2 institutions in 2 countries.

Yasuomi ShimizuDepartment of Urology, Graduate School of Medicine, Osaka City University, Osaka 545-8585, Japan. yasuomis0922@gmail.com.
Satoshi TamadaDepartment of Urology, Graduate School of Medicine, Osaka City University, Osaka 545-8585, Japan. s-tamada@med.osaka-cu.ac.jp.ORCID 0000-0002-7102-3408
Minoru KatoDepartment of Urology, Graduate School of Medicine, Osaka City University, Osaka 545-8585, Japan. kato.minoru@med.osaka-cu.ac.jp.
Yukiyoshi HirayamaGenome Sciences Centre, BC Cancer, Vancouver, BC V5Z 1L3, Canada. ukiyoc@hotmail.com.
Yuji TakeyamaDepartment of Urology, Graduate School of Medicine, Osaka City University, Osaka 545-8585, Japan. yuji101@outlook.jp.
Taro IguchiDepartment of Urology, Graduate School of Medicine, Osaka City University, Osaka 545-8585, Japan. taro@msic.med.osaka-cu.ac.jp.
Marianne D SadarGenome Sciences Centre, BC Cancer, Vancouver, BC V5Z 1L3, Canada. msadar@bcgsc.ca.
Tatsuya NakataniDepartment of Urology, Graduate School of Medicine, Osaka City University, Osaka 545-8585, Japan. nakatani@med.osaka-cu.ac.jp.
Osaka City University · JPGenome British Columbia · CA

Funding

Novel compounds that inhibit transactivation of N-terminal domain of the androgenR01CA105304 · NCI · PROVINCIAL HEALTH SERVICES AUTHORITY · PI SADAR, MARIANNE D · 2004 to 2021
$3.7M
NCI NIH HHS R01 CA105304US National Cancer Institute R01 CA105304
6 · The paper itself

Abstract

Expression of androgen receptor (AR) splice variant 7 (AR-V7) has been identified as the mechanism associated with the development of castration-resistant prostate cancer (CRPC). However, a potential link between AR-V7 expression and resistance to taxanes, such as docetaxel or cabazitaxel, has not been unequivocally demonstrated. To address this, we used LNCaP95-DR cells, which express AR-V7 and exhibit resistance to enzalutamide and docetaxel. Interestingly, LNCaP95-DR cells showed cross-resistance to cabazitaxel. Furthermore, these cells had increased levels of P-glycoprotein (P-gp) and their sensitivity to both docetaxel and cabazitaxel was restored through treatment with tariquidar, a P-gp antagonist. Results generated demonstrated that P-gp mediated cross-resistance between docetaxel and cabazitaxel. Although the LNCaP95-DR cells had increased expression of AR-V7 and its target genes (UBE2C, CDC20), the knockdown of AR-V7 did not restore sensitivity to docetaxel or cabazitaxel. However, despite resistance to docetaxel and carbazitaxel, EPI-002, an antagonist of the AR amino-terminal domain (NTD), had an inhibitory effect on the proliferation of LNCaP95-DR cells, which was similar to that achieved with the parental LNCaP95 cells. On the other hand, enzalutamide had no effect on the proliferation of either cell line. In conclusion, our results suggested that EPI-002 may be an option for the treatment of AR-V7-driven CRPC, which is resistant to taxanes.

Indexed as

androgen receptorcabazitaxelcastration-resistant prostate cancerchemotherapydocetaxelEPI-002P-glycoproteinsplice variant

Identifiers

PMID30453546
PMCPMC6262607
OpenAlexW2901274396

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.