Evidence map›Paper›PMID 25355422›Full record

ArticleHuman molecular genetics2015

Selective disruption of Tcf7l2 in the pancreatic β cell impairs secretory function and lowers β cell mass.

Ryan K Mitchell, Angeles Mondragon, Lingling Chen, James A Mcginty, Paul M French, Jorge Ferrer, Bernard Thorens, David J Hodson, Guy A Rutter, Gabriela Da Silva Xavier

Open access · bronzeAbstract read
In one paragraph

Article in Human molecular genetics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 2 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

63 citing papers in PubMed, 2 syntheses or guidelines pooled it, 106 citations in OpenAlex.

  1. Pooled it
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  6. CTNNB1 Genetic Variation and Its Interaction With DLK1 in Type 2 Diabetes Mellitus.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
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  13. Correlation betweenJournal of Taibah University Medical Sciences · 2024
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3 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

10 authors at 4 institutions in 4 countries.

Ryan K MitchellSection of Cell Biology, Division of Diabetes, Endocrinology and Metabolism, Department of Medicine.
Angeles MondragonSection of Cell Biology, Division of Diabetes, Endocrinology and Metabolism, Department of Medicine.
Lingling ChenPhotonics Group, Department of Physics and.
James A McgintyPhotonics Group, Department of Physics and.
Paul M FrenchPhotonics Group, Department of Physics and.
Jorge FerrerSection of Genetics and Medicine, Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, Imperial College London, London, UK.
Bernard ThorensCenter for Integrative Genomics, Physiology Department, University of Lausanne, Genopode Building, CH-1015 Lausanne, Switzerland.
David J HodsonSection of Cell Biology, Division of Diabetes, Endocrinology and Metabolism, Department of Medicine.
Guy A RutterSection of Cell Biology, Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, g.dasilva-xavier@imperial.ac.uk g.rutter@imperial.ac.uk.
Gabriela Da Silva XavierSection of Cell Biology, Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, g.dasilva-xavier@imperial.ac.uk g.rutter@imperial.ac.uk.
Diabetes Australia · AUPhotonics (United States) · USImperial College London · GBUniversity of Lausanne · CH

Funding

Biotechnology and Biological Sciences Research Council BB/J015873/1Medical Research Council MR/J0003042/1Medical Research Council MR/K001981/1Medical Research Council MR/L02036X/1Wellcome Trust 098424Wellcome Trust 101033Wellcome Trust WT098424AIA
6 · The paper itself

Abstract

Type 2 diabetes (T2D) is characterized by β cell dysfunction and loss. Single nucleotide polymorphisms in the T-cell factor 7-like 2 (TCF7L2) gene, associated with T2D by genome-wide association studies, lead to impaired β cell function. While deletion of the homologous murine Tcf7l2 gene throughout the developing pancreas leads to impaired glucose tolerance, deletion in the β cell in adult mice reportedly has more modest effects. To inactivate Tcf7l2 highly selectively in β cells from the earliest expression of the Ins1 gene (∼E11.5) we have therefore used a Cre recombinase introduced at the Ins1 locus. Tcfl2(fl/fl)::Ins1Cre mice display impaired oral and intraperitoneal glucose tolerance by 8 and 16 weeks, respectively, and defective responses to the GLP-1 analogue liraglutide at 8 weeks. Tcfl2(fl/fl)::Ins1Cre islets displayed defective glucose- and GLP-1-stimulated insulin secretion and the expression of both the Ins2 (∼20%) and Glp1r (∼40%) genes were significantly reduced. Glucose- and GLP-1-induced intracellular free Ca(2+) increases, and connectivity between individual β cells, were both lowered by Tcf7l2 deletion in islets from mice maintained on a high (60%) fat diet. Finally, analysis by optical projection tomography revealed ∼30% decrease in β cell mass in pancreata from Tcfl2(fl/fl)::Ins1Cre mice. These data demonstrate that Tcf7l2 plays a cell autonomous role in the control of β cell function and mass, serving as an important regulator of gene expression and islet cell coordination. The possible relevance of these findings for the action of TCF7L2 polymorphisms associated with Type 2 diabetes in man is discussed.

Indexed as

AnimalsBlood GlucoseDiabetes Mellitus, Type 2Diet, High-FatDisease Models, AnimalGene DeletionGenetic LociGenome-Wide Association StudyGlucagonGlucagon-Like Peptide 1Glucagon-Like Peptide-1 ReceptorInsulinInsulin-Secreting CellsInsulin SecretionIntegrasesMiceBlood GlucoseCre recombinaseGlp1r protein, mouseGlucagonGlucagon-Like Peptide 1Glucagon-Like Peptide-1 ReceptorIns1 protein, mouseIns2 protein, mouseInsulinIntegrasesReceptors, GlucagonTcf7l2 protein, mouseTranscription Factor 7-Like 2 Protein

Identifiers

PMID25355422
PMCPMC4321446
OpenAlexW2103199835

What OpenQuestion holds

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LicenceCC BY
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.