Evidence map›Paper›PMID 19237579›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

Lipocalin 2 promotes breast cancer progression.

Jiang Yang, Diane R Bielenberg, Scott J Rodig, Robert Doiron, Matthew C Clifton, Andrew L Kung, Roland K Strong, David Zurakowski, Marsha A Moses

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 211 papers.

0numbers the graph read from it
0cells of the map it votes in
211citing papers in PubMed
19.4field-weighted citation impact, top 1% 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

211 citing papers in PubMed, 356 citations in OpenAlex.

  1. Trial
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  8. Regulation of mitochondrial iron homeostasis in tumor cells.Molecular medicine (Cambridge, Mass.) · 2026
    Review
  9. Beyond olfaction: New insights into human odorant binding proteins.Protein science : a publication of the Protein Society · 2026
    Review
  10. Article
  11. Review
  12. Article
  13. Article
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  15. Article
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  19. Breast cancer shares many epidemiological, lifestyle, and local hormonal and metabolic underpinnings with endometrial and ovarian cancer: a narrative review.Translational breast cancer research : a journal focusing on translational research in breast cancer · 2025
    Review
  20. Iron and Cancer.Advances in experimental medicine and biology · 2025
    Review

151 more citing papers are in PubMed but not listed here.

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

9 authors at 5 institutions in 1 country.

Jiang YangVascular Biology Program and Department of Surgery, Children's Hospital Boston, Boston, MA 02115, USA.
Diane R Bielenberg
Scott J Rodig
Robert Doiron
Matthew C Clifton
Andrew L Kung
Roland K Strong
David Zurakowski
Marsha A Moses
Center for Vascular Biology Research · USFred Hutch Cancer Center · USHarvard University · USBrigham and Women's Hospital · USDana-Farber Cancer Institute · US

Funding

Molecular regulation of breast cancer growthR01CA118764 · NCI · BOSTON CHILDREN'S HOSPITAL · PI MOSES, MARSHA A · 2006 to 2010
$1.5M
Semaphorin 3F: Structure, Function, and Anti-Metastatic ActivityK01CA118732 · NCI · BOSTON CHILDREN'S HOSPITAL · PI BIELENBERG, DIANE RENEE · 2006 to 2010
$774k
NCI NIH HHS CA 118732-01A1NCI NIH HHS K01 CA118732NCI NIH HHS R01 CA118764
6 · The paper itself

Abstract

Here, we report that lipocalin 2 (Lcn2) promotes breast cancer progression, and we identify the mechanisms underlying this function. We first found that Lcn2 levels were consistently associated with invasive breast cancer in human tissue and urine samples. To investigate the function of Lcn2 in breast cancer progression, Lcn2 was overexpressed in human breast cancer cells and was found to up-regulate mesenchymal markers, including vimentin and fibronectin, down-regulate the epithelial marker E-cadherin, and significantly increase cell motility and invasiveness. These changes in marker expression and cell motility are hallmarks of an epithelial to mesenchymal transition (EMT). In contrast, Lcn2 silencing in aggressive breast cancer cells inhibited cell migration and the mesenchymal phenotype. Furthermore, reduced expression of estrogen receptor (ER) alpha and increased expression of the key EMT transcription factor Slug were observed with Lcn2 expression. Overexpression of ERalpha in Lcn2-expressing cells reversed the EMT and reduced Slug expression, suggesting that ERalpha negatively regulates Lcn2-induced EMT. Finally, orthotopic studies demonstrated that Lcn2-expressing breast tumors displayed a poorly differentiated phenotype and showed increased local tumor invasion and lymph node metastasis. Taken together, these in vitro, in vivo, and human studies demonstrate that Lcn2 promotes breast cancer progression by inducing EMT through the ERalpha/Slug axis and may be a useful biomarker of breast cancer.

Indexed as

Acute-Phase ProteinsAnimalsBreast NeoplasmsCell DifferentiationCell Line, TumorCell MovementCell ProliferationDisease Models, AnimalDisease ProgressionEndotheliumEstrogen Receptor alphaFemaleGene SilencingHumansLipocalin-2LipocalinsAcute-Phase ProteinsESR1 protein, humanEstrogen Receptor alphaLCN2 protein, humanLipocalin-2LipocalinsProto-Oncogene ProteinsSNAI1 protein, humanSnai2 protein, mouseSnail Family Transcription FactorsTranscription Factors

Identifiers

PMID19237579
PMCPMC2656179
OpenAlexW1968053635

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.