Evidence map›Paper›PMID 22889194›Full record

ArticleTraffic (Copenhagen, Denmark)2012

Cholesterol accumulation increases insulin granule size and impairs membrane trafficking.

Jonathan S Bogan, Yingke Xu, Mingming Hao

Open access · bronzeAbstract read
In one paragraph

Article in Traffic (Copenhagen, Denmark), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 9% 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

49 citing papers in PubMed, 1 synthesis or guideline pooled it, 88 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
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  5. Article
  6. Article
  7. Review
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    Article
  13. Review
  14. Review
  15. Article
  16. Review
  17. Article
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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

3 authors at 1 institution in 1 country.

Jonathan S BoganDepartment of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA.
Yingke Xu
Mingming Hao
Yale University · US

Funding

Yale Diabetes Research CenterP30DK045735 · NIDDK · YALE UNIVERSITY · PI Richard A Flavell · 1993 to 2026
$44.0M
Insulin stimulated ubiquitin-like modificationR01DK075772 · NIDDK · YALE UNIVERSITY · PI BOGAN, JONATHAN · 2007 to 2011
$1.5M
Direct effect of cholesterol on glucose-stimulated insulin secretionK01DK078625 · NIDDK · YALE UNIVERSITY · PI HAO, MINGMING · 2007 to 2010
$381k
NIDDK NIH HHS K01 DK078625NIDDK NIH HHS K01DK078625NIDDK NIH HHS P30 DK045735NIDDK NIH HHS P30DK45735NIDDK NIH HHS R01 DK075772NIDDK NIH HHS R01DK075772
6 · The paper itself

Abstract

The formation of mature secretory granules is essential for proper storage and regulated release of hormones and neuropeptides. In pancreatic β cells, cholesterol accumulation causes defects in insulin secretion and may participate in the pathogenesis of type 2 diabetes. Using a novel cholesterol analog, we show for the first time that insulin granules are the major sites of intracellular cholesterol accumulation in live β cells. This is distinct from other, non-secretory cell types, in which cholesterol is concentrated in the recycling endosomes and the trans-Golgi network. Excess cholesterol was delivered specifically to insulin granules, which caused granule enlargement and retention of syntaxin 6 and VAMP4 in granule membranes, with concurrent depletion of these proteins from the trans-Golgi network. Clathrin also accumulated in the granules of cholesterol-overloaded cells, consistent with a possible defect in the last stage of granule maturation, during which clathrin-coated vesicles bud from the immature granules. Excess cholesterol also reduced the docking and fusion of insulin granules at the plasma membrane. Together, the data support a model in which cholesterol accumulation in insulin secretory granules impairs the ability of these vesicles to respond to stimuli, and thus reduces insulin secretion.

Indexed as

AnimalsCell LineCell MembraneCholesterolInsulinInsulin-Secreting CellsMiceOrganelle SizePorphobilinogenProtein TransportQa-SNARE ProteinsR-SNARE ProteinsSecretory PathwaySecretory Vesiclestrans-Golgi Network3-anilino difluoroboron dipyrrometheneCholesterolInsulinPorphobilinogenQa-SNARE ProteinsR-SNARE ProteinsVamp4 protein, mouse

Identifiers

PMID22889194
PMCPMC3465494
OpenAlexW2160774703

What OpenQuestion holds

Textmetadata
LicenceTDM
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.