Evidence map›Paper›PMID 17935158›Full record

ArticleThe Prostate2007

Prostate cancer cells tolerate a narrow range of androgen receptor expression and activity.

Natalia D Tararova, Natalya Narizhneva, Vadim Krivokrisenko, Andrei V Gudkov, Katerina V Gurova

Open access · greenAbstract read
In one paragraph

Article in The Prostate, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

24 citing papers in PubMed, 30 citations in OpenAlex.

  1. Review
  2. Antiandrogenic Effects of a Polyphenol inInternational journal of molecular sciences · 2022
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  4. Review
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  11. Review
  12. ARF represses androgen receptor transactivation in prostate cancer.Molecular endocrinology (Baltimore, Md.) · 2013
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  16. 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

5 authors at 3 institutions in 1 country.

Natalia D TararovaDepartment of Molecular Genetics, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA.
Natalya Narizhneva
Vadim Krivokrisenko
Andrei V Gudkov
Katerina V Gurova
Cleveland BioLabs (United States) · USCleveland Clinic · USRoswell Park Comprehensive Cancer Center · US

Funding

Diagnostic Therapeutic Targets in Prostate CancerR01CA098374 · NCI · ROSWELL PARK CANCER INSTITUTE CORP · PI GUDKOV, ANDREI V · 2003 to 2007
$1.7M
Development of new inhibitors of androgen receptorsR41CA110400 · NCI · CLEVELAND BIOLABS, INC. · PI GUROVA, KATERINA V · 2004 to 2004
$100k
NCI NIH HHS 1R41CA110400-01NCI NIH HHS CA098374NCI NIH HHS R01 CA098374NCI NIH HHS R41 CA110400
6 · The paper itself

Abstract

backgroundThe precise role of androgen receptor (AR) in the normal development of prostate and the progression of prostate cancer (CaP) remains controversial. While AR expression and activity is associated with growth arrest and differentiation of normal prostate cells, it is maintained in CaP cells that are characterized by continued proliferation. Our objective was to determine the importance of AR signaling for survival and growth of CaP cells, particularly those with a hormone-refractory phenotype.

methodAR expression was modulated in androgen-sensitive (AS) and androgen-insensitive (AI) CaP cells using RNAi and cDNA transduction. Resulting changes in AR transcriptional activity and cell growth were quantified.

resultsInterference with AR expression in both AS and AI CaP cells by shRNA transduction demonstrated a direct correlation between residual AR expression and cell viability. CaP cells lacking AR expression undergo apoptosis several days after AR down-regulation. This delayed response suggests that AR regulates apoptosis likely through an indirect mechanism. Overexpression of AR or hyper-stimulation of AR with high levels of androgen was also poorly tolerated by CaP cells. Cells with elevated AR had a growth disadvantage due to G1 cell cycle arrest and induction of p21 and GADD45 expression.

conclusionsCaP cells expressing endogenous AR are sensitive to both increases and decreases in AR expression levels and activity. AR in CaP cells is delicately regulated to provide a balance between cell death and continued proliferation. Thus, both approaches, inhibition and over-stimulation of AR activity, may have therapeutic value for treatment of prostate cancer.

Indexed as

ApoptosisBlotting, WesternCell CycleCell Growth ProcessesCell Line, TumorDihydrotestosteroneHumansMaleNeoplasms, Hormone-DependentProstatic NeoplasmsReceptors, AndrogenRNA InterferenceRNA, Small InterferingSignal TransductionTranscription, GeneticTransfectionAR protein, humanDihydrotestosteroneReceptors, AndrogenRNA, Small Interfering

Identifiers

PMID17935158
PMCPMC2914504
OpenAlexW2015317618

What OpenQuestion holds

Textmetadata
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.