Evidence map›Paper›PMID 21771724›Full record

ArticleCarcinogenesis2011

Omega-3 fatty acids induce apoptosis in human breast cancer cells and mouse mammary tissue through syndecan-1 inhibition of the MEK-Erk pathway.

Haiguo Sun, Yunping Hu, Zhennan Gu, Rick T Owens, Yong Q Chen, Iris J Edwards

Open access · bronzeAbstract read
In one paragraph

Article in Carcinogenesis, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
5.4field-weighted citation impact, top 4% 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

37 citing papers in PubMed, 74 citations in OpenAlex.

  1. Article
  2. Article
  3. SDC1 is a critical transmembrane proteoglycan in breast cancer.World journal of surgical oncology · 2025
    Review
  4. Article
  5. Promising Effects ofMolecules (Basel, Switzerland) · 2023
    Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. Review
  11. Article
  12. Article
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  14. Article
  15. Review
  16. Article
  17. Article
  18. Lipid-Rich Extract from Mexican Avocado Seed (Journal of immunology research · 2019
    Article
  19. Article
  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

6 authors at 2 institutions in 1 country.

Haiguo SunDepartment of Pathology, Wake ForestUniversity School of Medicine, Winston-Salem, NC 27157, USA.
Yunping Hu
Zhennan Gu
Rick T Owens
Yong Q Chen
Iris J Edwards
Wake Forest University · USMillennium Engineering and Integration (United States) · US

Funding

Phospholipid Signaling in Fish oil-induced Growth Inhibition of Prostate CancerP01CA106742 · NCI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI CHEN, YONG Q · 2006 to 2010
$5.0M
Mechanisms of Fish Oil Supplement in Prevention of Pros*R01CA107668 · NCI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI CHEN, YONG Q · 2004 to 2014
$2.9M
Regulation of syndecan 1 in by n-3 PUFAR01CA115958 · NCI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI EDWARDS, IRIS J · 2005 to 2009
$1.0M
NCI NIH HHS P01CA106742NCI NIH HHS R01 CA107668NCI NIH HHS R01CA115958
6 · The paper itself

Abstract

Human epidemiological studies have shown that diets enriched in n-3 polyunsaturated fatty acids (n-3 PUFA) are associated with a lower incidence of cancers including breast cancer. Our previous studies showed that the n-3 PUFA, docosahexaenoic acid (DHA), upregulated syndecan-1 (SDC-1) expression to induce apoptosis in the human breast cancer cell line MCF-7. We now present evidence of a signaling pathway that is impacted by SDC-1 in these cells and in mouse mammary tissues to result in apoptosis. In MCF-7 cells and SK-BR-3 cells, DHA and a SDC-1 ectodomain impaired signaling of the p44/42 mitogen-activated protein kinase (MAPK) pathway by inhibiting the phosphorylation of MAPK/Erk (MEK)/extracellular signal-regulated kinase (Erk) and Bad to induce apoptosis. SDC-1 siRNA significantly enhanced phosphorylation of these signal molecules and blocked the inhibitory effects of DHA on their phosphorylation. SDC-1 siRNA diminished apoptosis of MCF-7 cells, an effect that was markedly blocked by MEK inhibitor, PD98059. In vivo studies used (i) Fat-1 mice, a genetic model able to convert n-6 to n-3 PUFA to result in higher SDC-1 levels in Fat-1 mammary tissue compared with that of wild-type (wt) mice. Phosphorylation of MEK, Erk and Bad was lower in the Fat-1 versus wt tissue and (ii) SDC-1(-/-) mice that demonstrated markedly higher levels of phosphorylated MEK, Erk and Bad in mammary gland tissue compared with those of SDC(+/+) mice. These data elucidate a pathway whereby SDC-1, upregulated by DHA, induces apoptosis in breast cancer cells through inhibition of MEK/Erk/Bad signaling.

Indexed as

AnimalsApoptosisbcl-Associated Death ProteinBlotting, WesternBreast NeoplasmsCadherinsDocosahexaenoic AcidsExtracellular Signal-Regulated MAP KinasesFemaleHumansMammary Glands, AnimalMiceMice, KnockoutMice, TransgenicMitogen-Activated Protein Kinase KinasesPhosphorylationbcl-Associated Death ProteinCadherinsDocosahexaenoic AcidsExtracellular Signal-Regulated MAP Kinasesfat1 protein, mouseMitogen-Activated Protein Kinase KinasesSyndecan-1

Identifiers

PMID21771724
PMCPMC3179420
OpenAlexW2152967954

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.