Evidence map›Paper›PMID 25706237›Full record

ArticleNature cell biology2015

Expansion of stem cells counteracts age-related mammary regression in compound Timp1/Timp3 null mice.

Hartland W Jackson, Paul Waterhouse, Ankit Sinha, Thomas Kislinger, Hal K Berman, Rama Khokha

Abstract read
PubMed Publisher
In one paragraph

Article in Nature cell biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.3field-weighted citation impact, top 10% 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

18 citing papers in PubMed, 40 citations in OpenAlex.

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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 3 institutions in 1 country.

Hartland W Jackson1] Department of Medical Biophysics, University of Toronto, Toronto, Ontario M5G 2M9, Canada [2] Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario M5G 2M9, Canada.
Paul WaterhousePrincess Margaret Cancer Centre/University Health Network, Toronto, Ontario M5G 2M9, Canada.
Ankit Sinha1] Department of Medical Biophysics, University of Toronto, Toronto, Ontario M5G 2M9, Canada [2] Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario M5G 2M9, Canada.
Thomas Kislinger1] Department of Medical Biophysics, University of Toronto, Toronto, Ontario M5G 2M9, Canada [2] Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario M5G 2M9, Canada.
Hal K Berman1] Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario M5G 2M9, Canada [2] Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada.
Rama Khokha1] Department of Medical Biophysics, University of Toronto, Toronto, Ontario M5G 2M9, Canada [2] Princess Margaret Cancer Centre/University Health Network, Toronto, Ontario M5G 2M9, Canada [3] Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada.
University of Toronto · CAPrincess Margaret Cancer Centre · CAUniversity Health Network · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Age is the primary risk factor for breast cancer in women. Bipotent basal stem cells actively maintain the adult mammary ductal tree, but with age tissues atrophy. We show that cell-extrinsic factors maintain the adult stem cell pool during ageing and dictate tissue stoichiometry. Mammary stem cells spontaneously expand more than 11-fold in virgin adult female mice lacking specific genes for TIMPs, the natural metalloproteinase inhibitors. Compound Timp1/Timp3 null glands exhibit Notch activation and accelerated gestational differentiation. Proteomics of mutant basal cells uncover altered cytoskeletal and extracellular protein repertoires, and we identify aberrant mitotic spindle orientation in these glands, a process that instructs asymmetric cell division and fate. We find that progenitor activity normally declines with age, but enriched stem/progenitor pools prevent tissue regression in Timp mutant mammary glands without affecting carcinogen-induced cancer susceptibility. Thus, improved stem cell content can extend mouse mammary tissue lifespan without altering cancer risk in this mouse model.

Indexed as

Age FactorsAgingAnimalsCell DifferentiationCell ProliferationCytoskeletal ProteinsFemaleGene Expression Regulation, DevelopmentalMammary Glands, AnimalMiceMice, KnockoutMitosisReceptors, NotchRisk FactorsSignal TransductionSpindle ApparatusCytoskeletal ProteinsReceptors, NotchTimp1 protein, mouseTissue Inhibitor of Metalloproteinase-1Tissue Inhibitor of Metalloproteinase-3

Identifiers

PMID25706237
OpenAlexW2069637351

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.