Evidence map›Paper›PMID 18984737›Full record

ArticleDiabetes2009

Methyltransferase Set7/9 maintains transcription and euchromatin structure at islet-enriched genes.

Tye G Deering, Takeshi Ogihara, Anthony P Trace, Bernhard Maier, Raghavendra G Mirmira

Open access · hybridAbstract read
In one paragraph

Article in Diabetes, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 1 pooled it
8.9field-weighted citation impact, top 2% 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

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

  1. Pooled it
  2. Review
  3. Review
  4. Review
  5. Review
  6. iScience · 2023
    Article
  7. Article
  8. Methyltransferase Set7/9 as a Multifaceted Regulator of ROS Response.International journal of biological sciences · 2023
    Review
  9. Review
  10. Review
  11. Review
  12. Article
  13. Epigenetic Regulation of PDX-1 in Type 2 Diabetes Mellitus.Diabetes, metabolic syndrome and obesity : targets and therapy · 2021
    Review
  14. Review
  15. Epigenetics in β-cell adaptation and type 2 diabetes.Current opinion in pharmacology · 2020
    Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article

2 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 at 3 institutions in 1 country.

Tye G DeeringDepartment of Pharmacology, University of Virginia, Charlottesville, Virginia, USA.
Takeshi Ogihara
Anthony P Trace
Bernhard Maier
Raghavendra G Mirmira
Indiana University – Purdue University Indianapolis · USUniversity of Virginia · USIndiana University School of Medicine

Funding

Transcriptional Mechanisms Governing Beta Cell DifferentiationR01DK060581 · NIDDK · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI Raghavendra G Mirmira · 2002 to 2026
$8.5M
TRAINING IN THE PHARMACOLOGICAL SCIENCEST32GM007055 · NIGMS · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI LYNCH, KEVIN R. · 1985 to 2022
$7.2M
NIDDK NIH HHS R01 DK060581NIDDK NIH HHS R01 DK60581NIGMS NIH HHS T32 GM007055
6 · The paper itself

Abstract

objectiveThe activation of beta-cell genes, particularly of those encoding preproinsulin, requires an appropriate euchromatin (or "open") DNA template characterized by hypermethylation of Lys4 of histone H3. We hypothesized that this modification is maintained in islet beta-cells by the action of the histone methyltransferase Set7/9. RESEARCH DESIGN AND

methodsTo identify the role of Set7/9, we characterized its expression pattern and gene regulation and studied its function using RNA interference in both cell lines and primary mouse islets.

resultsWithin the pancreas, Set7/9 protein shows striking specificity for islet cells, including alpha- and beta-cells, as well as occasional cells within ducts. Consistent with these findings, the Set7/9 gene promoter contained an islet-specific enhancer located between -5,768 and -6,030 base pairs (relative to the transcriptional start site) that exhibited Pdx1-responsive activation in beta-cells. To study Set7/9 function, we depleted insulinoma cells and primary mouse islets of Set7/9 protein using siRNA. Following siRNA treatment, we observed striking repression of genes involved in glucose-stimulated insulin secretion, including Ins1/2, Glut2, and MafA. These changes in transcription were accompanied by loss of dimethylated H3 Lys4 and RNA polymerase II recruitment, particularly at the Ins1/2 and Glut2 genes. Consistent with these data, depletion of Set7/9 in islets led to defects in glucose-stimulated Ca(2+) mobilization and insulin secretion.

conclusionsWe conclude that Set7/9 is required for normal beta-cell function, likely through the maintenance of euchromatin structure at genes necessary for glucose-stimulated insulin secretion.

Indexed as

AnimalsChromatin ImmunoprecipitationEuchromatinGene Expression RegulationGlucoseHistone-Lysine N-MethyltransferaseHistone MethyltransferasesImmunoblottingImmunohistochemistryInsulin-Secreting CellsIslets of LangerhansMiceMice, Inbred C57BLNIH 3T3 CellsPromoter Regions, GeneticProtein MethyltransferasesEuchromatinGlucoseHistone-Lysine N-MethyltransferaseHistone MethyltransferasesProtein MethyltransferasesRNA, Small Interfering

Identifiers

PMID18984737
PMCPMC2606870
OpenAlexW2102782172

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.