Evidence map›Paper›PMID 18585375›Full record

ArticleDevelopmental biology2008

Genetic mosaic analysis reveals FGF receptor 2 function in terminal end buds during mammary gland branching morphogenesis.

Pengfei Lu, Andrew J Ewald, Gail R Martin, Zena Werb

Abstract read
In one paragraph

Article in Developmental biology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 114 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
114citing papers in PubMed, 1 pooled it
5.1field-weighted citation impact, top 4% 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

114 citing papers in PubMed, 1 synthesis or guideline pooled it, 167 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Hormone Signaling in Breast Development and Cancer.Advances in experimental medicine and biology · 2025
    Review
  4. Article
  5. Targeting Tumor Heterogeneity by Breaking a Stem Cell and Epithelial Niche Interaction Loop.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Annotated expression and activity data for murine recombinase alleles and transgenes: the CrePortal resource.Mammalian genome : official journal of the International Mammalian Genome Society · 2022
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Born to Run? Diverse Modes of Epithelial Migration.Frontiers in cell and developmental biology · 2021
    Review
  20. Mammary Organoids and 3D Cell Cultures: Old Dogs with New Tricks.Journal of mammary gland biology and neoplasia · 2020
    Review

54 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

4 authors at 1 institution in 1 country.

Pengfei LuDepartment of Anatomy and Program in Developmental Biology, University of California at San Francisco, San Francisco, CA 94143-0452, USA.
Andrew J Ewald
Gail R Martin
Zena Werb
University of California, San Francisco · US

Funding

Bay Area Breast Cancer &the Environment Research CenterU01ES012801 · NIEHS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI HIATT, ROBERT A · 2003 to 2010
$12.4M
MOLECULAR AND CELLULAR BASIS OF CARDIOVASCULAR DISEASET32HL007731 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI Brian L Black · 1992 to 2026
$12.4M
Role of Metalloproteinases in Mammary Gland RemodelingR01CA057621 · NCI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI WERB, ZENA · 1993 to 2017
$9.0M
GENES THAT CONTROL VERTEBRATE EMBRYONIC DEVELOPMENTR37HD025331 · NICHD · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI MARTIN, GAIL R. · 1999 to 2008
$3.3M
MUTATING SPECIFIC GENES BY ALTERING ES CELLSR01HD025331 · NICHD · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI MARTIN, GAIL ROBERTA · 1989 to 1998
–
NCI NIH HHS CA057621NCI NIH HHS R01 CA057621NHLBI NIH HHS HL07731NHLBI NIH HHS T32 HL007731NICHD NIH HHS HD025331NICHD NIH HHS R37 HD025331NIEHS NIH HHS ES012801NIEHS NIH HHS U01 ES012801
6 · The paper itself

Abstract

FGF signaling is associated with breast cancer and is required for mammary placode formation in the mouse. In this study, we employed a genetic mosaic analysis based on Cre-mediated recombination to investigate FGF receptor 2 (Fgfr2) function in the postnatal mammary gland. Mosaic inactivation of Fgfr2 by the MMTV-Cre transgene enabled us to compare the behavior of Fgfr2 null and Fgfr2 heterozygous cells in the same gland. Fgfr2 null cells were at a competitive disadvantage to their Fgfr2 heterozygous neighbors in the highly proliferative terminal end buds (TEBs) at the invasion front, owing to a negative effect of loss of Fgfr2 function on cell proliferation. However, Fgfr2 null cells were tolerated in mature ducts. In these genetic mosaic mammary glands, the epithelial network is apparently built by TEBs that over time are composed of a progressively larger proportion of Fgfr2-positive cells. However, subsequently, most cells lose Fgfr2 function, presumably due to additional rounds of Cre-mediated recombination. Using an independent strategy to create mosaic mammary glands, which employed an adenovirus-Cre that acts only once, we confirmed that Fgfr2 null cells were out-competed by neighboring Fgfr2 heterozygous cells. Together, our data demonstrate that Fgfr2 functions in the proliferating and invading TEBs, but it is not required in the mature ducts of the pubertal mammary gland.

Indexed as

AnimalsFemaleFibroblast Growth Factor 2Mammary Glands, AnimalMiceMorphogenesisReceptor, Fibroblast Growth Factor, Type 2Sexual MaturationFibroblast Growth Factor 2Receptor, Fibroblast Growth Factor, Type 2

Identifiers

PMID18585375
PMCPMC2582391
OpenAlexW2059933457

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.