Evidence map›Paper›PMID 15535842›Full record

ArticleBreast cancer research : BCR2004

Role of Notch signaling in cell-fate determination of human mammary stem/progenitor cells.

Gabriela Dontu, Kyle W Jackson, Erin McNicholas, Mari J Kawamura, Wissam M Abdallah, Max S Wicha

Open access · goldAbstract read
In one paragraph

Article in Breast cancer research : BCR, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 374 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
374citing papers in PubMed, 1 pooled it
9.7field-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

374 citing papers in PubMed, 1 synthesis or guideline pooled it, 746 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
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  5. Article
  6. Article
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  10. Mutanobactin-D, aInternational journal of molecular sciences · 2025
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  11. Breast Morphogenesis: From Normal Development to Cancer.Advances in experimental medicine and biology · 2025
    Review
  12. Review
  13. Article
  14. Cell-cell communication: new insights and clinical implications.Signal transduction and targeted therapy · 2024
    Review
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  16. Article
  17. Article
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314 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

6 authors at 2 institutions in 1 country.

Gabriela DontuComprehensive Cancer Center, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA. gdontu@umich.edu
Kyle W Jackson
Erin McNicholas
Mari J Kawamura
Wissam M Abdallah
Max S Wicha
University of Michigan–Ann Arbor · USMichigan Medicine · US

Funding

XenograftP30CA046592 · NCI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI THEODORE S LAWRENCE · 1988 to 2026
$178.2M
Regulation of Breast Stem Cells by the MicroenvironmentR01CA101860 · NCI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WICHA, MAX S. · 2004 to 2013
$2.4M
NCI NIH HHS 5 P 30 CA46592NCI NIH HHS CA101860NCI NIH HHS CA66233NCI NIH HHS R01 CA101860
6 · The paper itself

Abstract

introductionNotch signaling has been implicated in the regulation of cell-fate decisions such as self-renewal of adult stem cells and differentiation of progenitor cells along a particular lineage. Moreover, depending on the cellular and developmental context, the Notch pathway acts as a regulator of cell survival and cell proliferation. Abnormal expression of Notch receptors has been found in different types of epithelial metaplastic lesions and neoplastic lesions, suggesting that Notch may act as a proto-oncogene. The vertebrate Notch1 and Notch4 homologs are involved in normal development of the mammary gland, and mutated forms of these genes are associated with development of mouse mammary tumors.

methodsIn order to determine the role of Notch signaling in mammary cell-fate determination, we have utilized a newly described in vitro system in which mammary stem/progenitor cells can be cultured in suspension as nonadherent 'mammospheres'. Notch signaling was activated using exogenous ligands, or was inhibited using previously characterized Notch signaling antagonists.

resultsUtilizing this system, we demonstrate that Notch signaling can act on mammary stem cells to promote self-renewal and on early progenitor cells to promote their proliferation, as demonstrated by a 10-fold increase in secondary mammosphere formation upon addition of a Notch-activating DSL peptide. In addition to acting on stem cells, Notch signaling is also able to act on multipotent progenitor cells, facilitating myoepithelial lineage-specific commitment and proliferation. Stimulation of this pathway also promotes branching morphogenesis in three-dimensional Matrigel cultures. These effects are completely inhibited by a Notch4 blocking antibody or a gamma secretase inhibitor that blocks Notch processing. In contrast to the effects of Notch signaling on mammary stem/progenitor cells, modulation of this pathway has no discernable effect on fully committed, differentiated, mammary epithelial cells.

conclusionThese studies suggest that Notch signaling plays a critical role in normal human mammary development by acting on both stem cells and progenitor cells, affecting self-renewal and lineage-specific differentiation. Based on these findings we propose that abnormal Notch signaling may contribute to mammary carcinogenesis by deregulating the self-renewal of normal mammary stem cells.

Indexed as

Cell DifferentiationCells, CulturedEpithelial CellsFemaleHumansMammary Glands, HumanProto-Oncogene MasProto-Oncogene ProteinsReceptor, Notch1Receptor, Notch4Receptors, Cell SurfaceReceptors, NotchSignal TransductionStem CellsTranscription FactorsMAS1 protein, humanNOTCH1 protein, humanNOTCH4 protein, humanProto-Oncogene MasProto-Oncogene ProteinsReceptor, Notch1Receptor, Notch4Receptors, Cell SurfaceReceptors, NotchTranscription Factors

Identifiers

PMID15535842
PMCPMC1064073
OpenAlexW2146074268

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.