Evidence map›Paper›PMID 20696059›Full record

ArticleBreast cancer research : BCR2010

Anti-tumor effects of retinoids combined with trastuzumab or tamoxifen in breast cancer cells: induction of apoptosis by retinoid/trastuzumab combinations.

Debbie C Koay, Cynthia Zerillo, Murli Narayan, Lyndsay N Harris, Michael P DiGiovanna

Open access · goldAbstract read
In one paragraph

Article in Breast cancer research : BCR, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 15% 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, 1 synthesis or guideline pooled it, 59 citations in OpenAlex.

  1. Pooled it
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  17. Cooperative antitumor activities of carnosic acid and Trastuzumab in ERBB2Journal of experimental & clinical cancer research : CR · 2017
    Article
  18. Fenretinide: A Potential Treatment for Endometriosis.Reproductive sciences (Thousand Oaks, Calif.) · 2016
    Article
  19. Natural Products for Chemoprevention of Breast Cancer.Journal of cancer prevention · 2015
    Review
  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

5 authors at 3 institutions in 1 country.

Debbie C KoayDepartment of Internal Medicine (Section of Medical Oncology), Yale Cancer Center and Smilow Cancer Hospital at Yale-New-Haven Hospital, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, USA.
Cynthia Zerillo
Murli Narayan
Lyndsay N Harris
Michael P DiGiovanna
Yale New Haven Hospital · USYale University · USSmilow Cancer Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionHER2 and estrogen receptor (ER) are important in breast cancer and are therapeutic targets of trastuzumab (Herceptin) and tamoxifen, respectively. Retinoids inhibit breast cancer growth, and modulate signaling by HER2 and ER. We hypothesized that treatment with retinoids and simultaneous targeting of HER2 and/or ER may have enhanced anti-tumor effects.

methodsThe effects of retinoids combined with trastuzumab or tamoxifen were examined in two human breast cancer cell lines in culture, BT474 and SKBR3. Assays of proliferation, apoptosis, differentiation, cell cycle distribution, and receptor signaling were performed.

resultsIn HER2-overexpressing/ER-positive BT474 cells, combining all-trans retinoic acid (atRA) with tamoxifen or trastuzumab synergistically inhibited cell growth, and altered cell differentiation and cell cycle. Only atRA/trastuzumab-containing combinations induced apoptosis. BT474 and HER2-overexpressing/ER-negative SKBR3 cells were treated with a panel of retinoids (atRA, 9-cis-retinoic acid, 13-cis-retinoic acid, or N-(4-hydroxyphenyl) retinamide (fenretinide) (4-HPR)) combined with trastuzumab. In BT474 cells, none of the single agents except 4-HPR induced apoptosis, but again combinations of each retinoid with trastuzumab did induce apoptosis. In contrast, the single retinoid agents did cause apoptosis in SKBR3 cells; this was only modestly enhanced by addition of trastuzumab. The retinoid drug combinations altered signaling by HER2 and ER. Retinoids were inactive in trastuzumab-resistant BT474 cells.

conclusionsCombining retinoids with trastuzumab maximally inhibits cell growth and induces apoptosis in trastuzumab-sensitive cells. Treatment with such combinations may have benefit for breast cancer patients.

Indexed as

AlitretinoinAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedAntineoplastic AgentsApoptosisBreast NeoplasmsCell CycleCell DifferentiationCell Line, TumorCell ProliferationDose-Response Relationship, DrugDrug SynergismErb-b2 Receptor Tyrosine KinasesEstrogen AntagonistsFemaleHumansAlitretinoinAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedAntineoplastic AgentsErb-b2 Receptor Tyrosine KinasesEstrogen AntagonistsIsotretinoinReceptors, EstrogenRetinoidsTamoxifenTrastuzumabTretinoin

Identifiers

PMID20696059
PMCPMC2949655
OpenAlexW2119238998

What OpenQuestion holds

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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.