Evidence map›Paper›PMID 15318941›Full record

ArticleBreast cancer research : BCR2004

Reduced expression of p27 is a novel mechanism of docetaxel resistance in breast cancer cells.

Iain Brown, Kawan Shalli, Sarah L McDonald, Susan E Moir, Andrew W Hutcheon, Steven D Heys, Andrew C Schofield

Open access · goldAbstract read
In one paragraph

Article in Breast cancer research : BCR, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

28 citing papers in PubMed, 77 citations in OpenAlex.

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  16. Role of miR-155 in drug resistance of breast cancer.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2015
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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

7 authors at 2 institutions in 1 country.

Iain BrownDepartment of Surgery, University of Aberdeen, Medical School, Aberdeen, UK. i.brown@abdn.ac.uk
Kawan Shalli
Sarah L McDonald
Susan E Moir
Andrew W Hutcheon
Steven D Heys
Andrew C Schofield
University of Aberdeen · GBAberdeen Royal Infirmary · GB

Funding

Breast Cancer Now 2001:209
6 · The paper itself

Abstract

introductionDocetaxel is one of the most effective chemotherapeutic agents in the treatment of breast cancer. Breast cancers can have an inherent or acquired resistance to docetaxel but the causes of this resistance remain unclear. However, apoptosis and cell cycle regulation are key mechanisms by which most chemotherapeutic agents exert their cytotoxic effects.

methodsWe created two docetaxel-resistant human breast cancer cell lines (MCF-7 and MDA-MB-231) and performed cDNA microarray analysis to identify candidate genes associated with docetaxel resistance. Gene expression changes were validated at the RNA and protein levels by reverse transcription PCR and western analysis, respectively.

resultsGene expression cDNA microarray analysis demonstrated reduced p27 expression in docetaxel-resistant breast cancer cells. Although p27 mRNA expression was found to be reduced only in MCF-7 docetaxel-resistant sublines (2.47-fold), reduced expression of p27 protein was noted in both MCF-7 and MDA-MB-231 docetaxel-resistant breast cancer cells (2.83-fold and 3.80-fold, respectively).

conclusionsThis study demonstrates that reduced expression of p27 is associated with acquired resistance to docetaxel in breast cancer cells. An understanding of the genes that are involved in resistance to chemotherapy may allow further development in modulating drug resistance, and may permit selection of those patients who are most likely to benefit from such therapies.

Indexed as

Antineoplastic Agents, PhytogenicBreast NeoplasmsCell Cycle ProteinsCell Line, TumorCyclin-Dependent Kinase Inhibitor p27DocetaxelDrug Resistance, NeoplasmHumansOligonucleotide Array Sequence AnalysisRNA, MessengerTaxoidsTumor Suppressor ProteinsAntineoplastic Agents, PhytogenicCell Cycle ProteinsCyclin-Dependent Kinase Inhibitor p27DocetaxelRNA, MessengerTaxoidsTumor Suppressor Proteins

Identifiers

PMID15318941
PMCPMC549179
OpenAlexW2128202801

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.