Evidence map›Paper›PMID 22029423›Full record

ArticleRadiation oncology (London, England)2011

Resveratrol enhances prostate cancer cell response to ionizing radiation. Modulation of the AMPK, Akt and mTOR pathways.

Ayesha Rashid, Caiqiong Liu, Toran Sanli, Evangelia Tsiani, Gurmit Singh, Robert G Bristow, Ian Dayes, Himu Lukka, James Wright, Theodoros Tsakiridis

Expression of concernOpen access · goldAbstract read
In one paragraph

Article in Radiation oncology (London, England), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It carries an expression of concern. Cited by 51 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed, 1 pooled it
3.6field-weighted citation impact, top 7% 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

51 citing papers in PubMed, 1 synthesis or guideline pooled it, 95 citations in OpenAlex.

  1. Dietary polyphenols in prevention and treatment of prostate cancer.International journal of molecular sciences · 2015
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  19. Molecular pharmacology · 2022
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 1 country.

Ayesha RashidTranslational Radiation Biology Laboratory, Juravinski Cancer Centre, Hamilton, Ontario, Canada.
Caiqiong Liu
Toran Sanli
Evangelia Tsiani
Gurmit Singh
Robert G Bristow
Ian Dayes
Himu Lukka
James Wright
Theodoros Tsakiridis
McMaster University · CAJuravinski Cancer Centre · CABrock University · CAPrincess Margaret Cancer Centre · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

backgroundProstate cancer (PrCa) displays resistance to radiotherapy (RT) and requires radiotherapy dose escalation which is associated with greater toxicity. This highlights a need to develop radiation sensitizers to improve the efficacy of RT in PrCa. Ionizing radiation (IR) stimulates pathways of IR-resistance and survival mediated by the protein kinase Akt but it also activates the metabolic energy sensor and tumor suppressor AMP-Activated Protein Kinase (AMPK). Here, we examined the effects of the polyphenol resveratrol (RSV) on the IR-induced inhibition of cell survival, modulation of cell cycle and molecular responses in PrCa cells.

methodsAndrogen-insensitive (PC3), sensitive (22RV1) PrCa and PNT1A normal prostate epithelial cells were treated with RSV alone (2.5-10 μM) or in combination with IR (2-8 Gy). Clonogenic assays, cell cycle analysis, microscopy and immunoblotting were performed to assess survival, cell cycle progression and molecular responses.

resultsRSV (2.5-5 μM) inhibited clonogenic survival of PC3 and 22RV1 cells but not of normal prostate PNT1A cells. RSV specifically sensitized PrCa cells to IR, induced cell cycle arrest at G1-S phase and enhanced IR-induced nuclear aberrations and apoptosis. RSV enhanced IR-induced expression of DNA damage (γH2Ax) and apoptosis (cleaved-caspase 3) markers as well as of the cell cycle regulators p53, p21(cip1) and p27(kip1). RSV enhanced IR-activation of ATM and AMPK but inhibited basal and IR-induced phosphorylation of Akt.

conclusionsOur results suggest that RSV arrests cell cycle, promotes apoptosis and sensitizes PrCa cells to IR likely through a desirable dual action to activate the ATM-AMPK-p53-p21(cip1)/p27(kip1) and inhibit the Akt signalling pathways.

Indexed as

AMP-Activated Protein KinasesAntineoplastic Agents, PhytogenicApoptosisCell CycleCell Line, TumorCell SurvivalG1 PhaseHumansMaleMicroscopy, FluorescenceProstatic NeoplasmsProto-Oncogene Proteins c-aktRadiation, IonizingResveratrolStilbenesTOR Serine-Threonine KinasesAMP-Activated Protein KinasesAntineoplastic Agents, PhytogenicProto-Oncogene Proteins c-aktResveratrolStilbenesTOR Serine-Threonine Kinases

Identifiers

PMID22029423
PMCPMC3217881
OpenAlexW2141018935

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.