Evidence map›Paper›PMID 16968749›Full record

ArticleJournal of cell science2006

Dystroglycan loss disrupts polarity and beta-casein induction in mammary epithelial cells by perturbing laminin anchoring.

M Lynn Weir, Maria Luisa Oppizzi, Michael D Henry, Akiko Onishi, Kevin P Campbell, Mina J Bissell, John L Muschler

Abstract readComparative Study
In one paragraph

Article in Journal of cell science, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
0.8field-weighted citation impact, top 31% 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

58 citing papers in PubMed, 27 citations in OpenAlex.

  1. Mechanisms of Regulation of Cell Fate in Breast Development and Cancer.Advances in experimental medicine and biology · 2025
    Review
  2. Article
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  7. Generating a Fractal Microstructure of Laminin-111 to Signal to Cells.Journal of visualized experiments : JoVE · 2020
    Article
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  15. Review
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  18. Integrins and epithelial cell polarity.Journal of cell science · 2014
    Review
  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

7 authors at 1 institution in 1 country.

M Lynn WeirCalifornia Pacific Medical Center Research Institute, 475 Brannan Street, Suite 217, San Francisco, CA 94107, USA.
Maria Luisa Oppizzi
Michael D Henry
Akiko Onishi
Kevin P Campbell
Mina J Bissell
John L Muschler
California Pacific Medical Center · US

Funding

Dystroglycan in Epithelial Architecture and FunctionR01CA109579 · NCI · CALIFORNIA PACIFIC MED CTR RES INSTITUTE · PI MUSCHLER, JOHN L · 2005 to 2009
$1.6M
NCI NIH HHS R01 CA10957-01NCI NIH HHS R01 CA109579
6 · The paper itself

Abstract

Precise contact between epithelial cells and their underlying basement membrane is crucial to the maintenance of tissue architecture and function. To understand the role that the laminin receptor dystroglycan (DG) plays in these processes, we assayed cell responses to laminin-111 following conditional ablation of DG gene (Dag1) expression in cultured mammary epithelial cells. Strikingly, DG loss disrupted laminin-111-induced polarity and beta-casein production, and abolished laminin assembly at the step of laminin binding to the cell surface. Dystroglycan re-expression restored these deficiencies. Investigations of the mechanism revealed that DG cytoplasmic sequences were not necessary for laminin assembly and signaling, and only when the entire mucin domain of extracellular DG was deleted did laminin assembly not occur. These results demonstrate that DG is essential as a laminin-111 co-receptor in mammary epithelial cells that functions by mediating laminin anchoring to the cell surface, a process that allows laminin polymerization, tissue polarity and beta-casein induction. The observed loss of laminin-111 assembly and signaling in Dag1(-/-) mammary epithelial cells provides insights into the signaling changes occurring in breast carcinomas and other cancers, where the binding function of DG to laminin is frequently defective.

Indexed as

AnimalsCaseinsCell PolarityCells, CulturedChimeraDystroglycansEpithelial CellsFemaleLamininMammary Glands, AnimalMiceMice, TransgenicModels, BiologicalPregnancyProtein Structure, TertiaryCaseinsDystroglycansLaminin

Identifiers

PMID16968749
PMCPMC2996718
OpenAlexW308891121

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.