Evidence map›Paper›PMID 12107118›Full record

ArticleThe American journal of pathology2002

The alpha(2) integrin subunit-deficient mouse: a multifaceted phenotype including defects of branching morphogenesis and hemostasis.

Jianchun Chen, Thomas G Diacovo, David G Grenache, Samuel A Santoro, Mary M Zutter

Abstract read
In one paragraph

Article in The American journal of pathology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 98 papers.

0numbers the graph read from it
0cells of the map it votes in
98citing papers in PubMed
–field-weighted citation impact
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

98 citing papers in PubMed.

  1. Article
  2. Mechanisms of Regulation of Cell Fate in Breast Development and Cancer.Advances in experimental medicine and biology · 2025
    Review
  3. Article
  4. Cell-specific expression and function of laminin at the neurovascular unit.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Review
  5. Article
  6. Review
  7. Review
  8. Review
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  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
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  18. Article
  19. Review
  20. Review

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Jianchun ChenDepartment of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri 63110, USA.
Thomas G Diacovo
David G Grenache
Samuel A Santoro
Mary M Zutter

Funding

ALTERED ALPHA-2 INTEGRIN EXPRESSION IN BREAST CANCERR01CA070275 · NCI · WASHINGTON UNIVERSITY · PI ZUTTER, MARY M. · 1996 to 2005
$1.8M
ALPHA2 BETA1 INTEGRIN: CELL CYCLE PROGRESSION/MIGRATIONR01CA083690 · NCI · WASHINGTON UNIVERSITY · PI ZUTTER, MARY M. · 2000 to 2004
$1.2M
VASCULAR CELL COLLAGEN RECEPTORSR01HL063446 · NHLBI · WASHINGTON UNIVERSITY · PI SANTORO, SAMUEL A · 1999 to 2002
$1.0M
NCI NIH HHS CA70275NCI NIH HHS CA83690NCI NIH HHS R01 CA070275NCI NIH HHS R01 CA083690NHLBI NIH HHS HL63446
6 · The paper itself

Abstract

The alpha(2)beta(1) integrin is a collagen/laminin receptor expressed on platelets, endothelial cells, fibroblasts, and epithelial cells. To define the role of the alpha(2)beta(1) integrin in vivo, we created a genetically engineered mouse in which expression of the alpha(2)beta(1) integrin was completely eliminated. Mice deficient in the alpha(2)beta(1) integrin are viable, fertile, and develop normally with no excess lethality of homozygotes. Both alpha(2)beta(1)-integrin protein and alpha(2) mRNA were undetectable in the alpha(2)-null mice. Gross and histological evaluation of the heart, lungs, kidneys, gastrointestinal tract, pancreas, skin, and reproductive tracts revealed no abnormalities. However, quantitative analysis of mammary gland branching morphogenesis demonstrated that branching complexity is markedly diminished in the alpha(2)-deficient animals. Studies in the alpha(2)-deficient animals do not support the proposed roles for the alpha(2)beta(1) integrin on fibroblasts and keratinocytes in wound healing. When compared to platelets from wild-type littermates, platelets from alpha(2)-null mice failed to adhere to type I collagen under either static or shear-stress conditions. Although platelets from alpha(2)-deficient animals aggregated in response to collagen, they did so with prolonged lag time and lessened intensity. The alpha(2)beta(1) integrin-null mouse thus exhibits diverse, sometimes subtle, phenotypes consistent with the widespread pattern of alpha(2)beta(1) integrin expression.

Indexed as

AnimalsAntigens, CDFemaleHemostasisIntegrin alpha2MaleMammary Glands, AnimalMiceMice, KnockoutPhenotypePlatelet AdhesivenessPlatelet AggregationTime FactorsAntigens, CDIntegrin alpha2

Identifiers

PMID12107118
PMCPMC1850700

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.