Evidence map›Paper›PMID 21933912›Full record

ArticleCancer prevention research (Philadelphia, Pa.)2012

CDDO-methyl ester delays breast cancer development in BRCA1-mutated mice.

Eun-Hee Kim, Chuxia Deng, Michael B Sporn, Darlene B Royce, Renee Risingsong, Charlotte R Williams, Karen T Liby

Open access · bronzeAbstract read
In one paragraph

Article in Cancer prevention research (Philadelphia, Pa.), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 9% 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

38 citing papers in PubMed, 1 synthesis or guideline pooled it, 56 citations in OpenAlex.

  1. Pooled it
  2. Nrf2 Hyperactivation as a Driver of Radiotherapy Resistance and Suppressed Antitumor Immunity in Head and Neck Squamous Cell Carcinoma.Clinical cancer research : an official journal of the American Association for Cancer Research · 2025
    Article
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  7. Article
  8. Mitigation of Cardiovascular Disease and Toxicity through NRF2 Signalling.International journal of molecular sciences · 2023
    Review
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  11. Article
  12. Article
  13. 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

7 authors at 2 institutions in 1 country.

Eun-Hee KimDepartment of Medicine, Dartmouth Medical School, Hanover, NH 03755, USA.
Chuxia Deng
Michael B Sporn
Darlene B Royce
Renee Risingsong
Charlotte R Williams
Karen T Liby
Dartmouth College · USNational Institute of Diabetes and Digestive and Kidney Diseases · US

Funding

Translational Engineering in Cancer (TEC)P30CA023108 · NCI · DARTMOUTH COLLEGE · PI Steven D Leach · 1985 to 2026
$91.3M
PPARy, a molecular Target for Prevention of CancerR01CA078814 · NCI · DARTMOUTH COLLEGE · PI SPORN, MICHAEL B · 1999 to 2013
$5.7M
Chemoprevention and therapeutic treatment of BRCA1 associated mammary tumorsZIADK056009 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI DENG, CHUXIA · 2009 to 2014
$4.0M
BRCA1, DNA damage response and agingZIADK056010 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI DENG, CHUXIA · 2009 to 2014
$3.9M
Roles of BRCA1 transcription target genes in tumorigenesis and agingZIADK056011 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI DENG, CHUXIA · 2009 to 2014
$3.9M
Brca1 in development and tumorigenesisZIADK056001 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI DENG, CHUXIA · 2009 to 2012
$2.2M
NCI NIH HHS P30 CA023108NCI NIH HHS R01 CA078814NCI NIH HHS R01 CA78814
6 · The paper itself

Abstract

The breast cancer-associated gene 1 (BRCA1) is the most frequently mutated tumor suppressor gene in familial breast cancers. Mutations in BRCA1 also predispose to other types of cancers, pointing to a fundamental role of this pathway in tumor suppression and emphasizing the need for effective chemoprevention in these high-risk patients. Because the methyl ester of the synthetic triterpenoid 2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oic acid (CDDO-Me) is a potent chemopreventive agent, we tested its efficacy in a highly relevant mouse model of BRCA1-mutated breast cancer. Beginning at 12 weeks of age, Brca1(Co/Co); MMTV-Cre;p53(+/-) mice were fed powdered control diet or diet containing CDDO-Me (50 mg/kg diet). CDDO-Me significantly (P < 0.05) delayed tumor development in the Brca1-mutated mice by an average of 5.2 weeks. We also observed that levels of ErbB2, p-ErbB2, and cyclin D1 increased in a time-dependent manner in the mammary glands in Brca1-deficient mice, and CDDO-Me inhibited the constitutive phosphorylation of ErbB2 in tumor tissues from these mice. In BRCA1-deficient cell lines, the triterpenoids directly interacted with ErbB2, decreased constitutive phosphorylation of ErbB2, inhibited proliferation, and induced G(0)-G(1) arrest. These results suggest that CDDO-Me has the potential to prevent BRCA1-mutated breast cancer.

Indexed as

Genes, BRCA1AnimalsAnticarcinogenic AgentsBRCA1 ProteinCell CycleErb-b2 Receptor Tyrosine KinasesFemaleGenes, p53Mammary Neoplasms, AnimalMiceMutationOleanolic AcidPhosphorylationAnticarcinogenic Agentsbardoxolone methylBRCA1 ProteinErb-b2 Receptor Tyrosine KinasesOleanolic Acid

Identifiers

PMID21933912
PMCPMC3252488
OpenAlexW2040856720

What OpenQuestion holds

Textmetadata
LicenceTDM
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.