Evidence map›Paper›PMID 19784770›Full record

ArticleBreast cancer research and treatment2010

Breast cancer expresses functional NMDA receptors.

William G North, Guohong Gao, Vincent A Memoli, Roy H Pang, Launa Lynch

Open access · greenAbstract read
In one paragraph

Article in Breast cancer research and treatment, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
1.5field-weighted citation impact, top 19% 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

55 citing papers in PubMed, 98 citations in OpenAlex.

  1. Review
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  10. Metal Ion Signaling in Biomedicine.Chemical reviews · 2025
    Review
  11. Article
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  14. Article
  15. Article
  16. Review
  17. Review
  18. D-Amino Acids and Cancer: Friends or Foes?International journal of molecular sciences · 2023
    Review
  19. NMDA Receptor and Its Emerging Role in Cancer.International journal of molecular sciences · 2023
    Review
  20. The dark side of synaptic proteins in tumours.British journal of cancer · 2022
    Review
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 2 institutions in 1 country.

William G NorthDartmouth Medical School, Lebanon, NH 03756, USA, william.g.north@dartmouth.edu
Guohong Gao
Vincent A Memoli
Roy H Pang
Launa Lynch
Dartmouth College · USWoomera Therapeutics · US

Funding

THE ROLE OF HORMONES IN HEALTH AND DISEASET32DK007508 · NIDDK · DARTMOUTH COLLEGE · PI NORTH, WILLIAM G · 1986 to 2011
$2.5M
NIDDK NIH HHS T32 DK007508NIDDK NIH HHS T32 DK07508
6 · The paper itself

Abstract

We demonstrate here that functional NMDAR1 and NMDAR2 receptors are expressed by Mcf-7 and SKBR3 breast cancer cell lines, and possibly by most or all high-grade breast tumors, and that these receptors are important for the growth of human breast cancer xenografts in mice. RT-PCR demonstrated mRNA for both NMDAR1 and NMDAR2 receptors are expressed in both Mcf-7 and SKBR3 cell lines, and these messages likely have sequences identical to those reported for human mRNAs. Proteins of the expected respective sizes 120 and 170 kD are generated from these mRNAs by the tumor cells. Cell growth was found to be significantly (P < 0.0001) impaired down to 10% of normal growth by the irreversible NMDAR1 antagonists MK-801 and memantine with IC 50s ranging from 600 to >800 microM and from 200 to 300 microM for the two lines. Paradoxically, memantine with a lower binding affinity had the greater influence of the two inhibitors on cell viability. Immunohistochemical examination of high-grade invasive ductal and lobular breast cancer with our polyclonal antibodies against a peptide (-Met-Ser-Ile-Tyr-Ser-Asp-Lys-Ser-Ile-His-) in the extracellular domain of the NMDAR1 receptor gave specific positive staining for the receptor in all 10 cases examined. Positive staining was chiefly concentrated at the membranes of these tumor tissues. No staining with these antibodies was found for normal breast and kidney tissues. When Mcf-7 cells were grown as tumor xenografts in nu/nu mice, the growth of these tumors was completely arrested by daily treatments with MK-801 over 5 days. All of these data point to active NMDAR receptors being expressed by most breast cancers, and having an important influence on their survival.

Indexed as

Cell ProliferationAnimalsAntineoplastic AgentsBreast NeoplasmsCarrier ProteinsCell Line, TumorCell SurvivalDizocilpine MaleateDose-Response Relationship, DrugExcitatory Amino Acid AntagonistsFemaleGene Expression Regulation, NeoplasticHumansInhibitory Concentration 50MemantineMiceAntineoplastic AgentsCarrier ProteinsDizocilpine MaleateExcitatory Amino Acid AntagonistsGRIN1 protein, humanMemantineNerve Tissue ProteinsNR2B NMDA receptorReceptors, N-Methyl-D-AspartateRNA, Messenger

Identifiers

PMID19784770
PMCPMC4747431
OpenAlexW2074036847

What OpenQuestion holds

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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.