Evidence map›Paper›PMID 26405105›Full record

ArticleGlycobiology2016

Inhibition of Rab prenylation by statins induces cellular glycosphingolipid remodeling.

Beth Binnington, Long Nguyen, Mustafa Kamani, Delowar Hossain, David L Marks, Monique Budani, Clifford A Lingwood

Open access · bronzeAbstract read
In one paragraph

Article in Glycobiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
1.1field-weighted citation impact, top 24% 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

21 citing papers in PubMed, 2 syntheses or guidelines pooled it, 37 citations in OpenAlex.

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  13. LXR directly regulates glycosphingolipid synthesis and affects human CD4+ T cell function.Proceedings of the National Academy of Sciences of the United States of America · 2021
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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

7 authors at 3 institutions in 2 countries.

Beth BinningtonResearch Institute, Program in Molecular Structure and Function, The Hospital for Sick Children, 686 Bay St., Toronto, ON M5G 1X8, Canada.
Long NguyenResearch Institute, Program in Molecular Structure and Function, The Hospital for Sick Children, 686 Bay St., Toronto, ON M5G 1X8, Canada.
Mustafa KamaniResearch Institute, Program in Molecular Structure and Function, The Hospital for Sick Children, 686 Bay St., Toronto, ON M5G 1X8, Canada Department of Biochemistry.
Delowar HossainResearch Institute, Program in Molecular Structure and Function, The Hospital for Sick Children, 686 Bay St., Toronto, ON M5G 1X8, Canada.
David L MarksSchulze Center for Novel Therapeutics, Division of Oncology Research, Mayo Clinic, Rochester, MN, USA.
Monique BudaniResearch Institute, Program in Molecular Structure and Function, The Hospital for Sick Children, 686 Bay St., Toronto, ON M5G 1X8, Canada Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada.
Clifford A LingwoodResearch Institute, Program in Molecular Structure and Function, The Hospital for Sick Children, 686 Bay St., Toronto, ON M5G 1X8, Canada Department of Biochemistry Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada cling@sickkids.on.ca.
Hospital for Sick Children · CAUniversity of Toronto · CAMayo Clinic · US

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

Statins, which specifically inhibit HMG Co-A reductase, the rate-limiting step of cholesterol biosynthesis, are widely prescribed to reduce serum cholesterol and cardiac risk, but many other effects are seen. We now show an effect of these drugs to induce profound changes in the step-wise synthesis of glycosphingolipids (GSLs) in the Golgi. Glucosylceramide (GlcCer) was increased several-fold in all cell lines tested, demonstrating a widespread effect. Additionally, de novo or elevated lactotriaosylceramide (Lc3Cer; GlcNAcβ1-3Galβ1-4GlcCer) synthesis was observed in 70%. Western blot showed that GlcCer synthase (GCS) was elevated by statins, and GCS and Lc3Cer synthase (Lc3S) activities were increased; however, transcript was elevated for Lc3S only. Supplementation with the isoprenoid precursor, geranylgeranyl pyrophosphate (GGPP), a downstream product of HMG Co-A reductase, reversed statin-induced glycosyltransferase and GSL elevation. The Rab geranylgeranyl transferase inhibitor 3-PEHPC, but not specific inhibitors of farnesyl transferase, or geranylgeranyl transferase I, was sufficient to replicate statin-induced GlcCer and Lc3Cer synthesis, supporting a Rab prenylation-dependent mechanism. While total cholesterol was unaffected, the trans-Golgi network (TGN) cholesterol pool was dissipated and medial Golgi GCS partially relocated by statins. GSL-dependent vesicular retrograde transport of Verotoxin and cholera toxin to the Golgi/endoplasmic reticulum were blocked after statin or 3-PEHPC treatment, suggesting aberrant, prenylation-dependent vesicular traffic as a basis of glycosyltransferase increase and GSL remodeling. These in vitro studies indicate a previously unreported link between Rab prenylation and regulation of GCS activity and GlcCer metabolism.

Indexed as

Anticholesteremic AgentsCeramidesGeranyltranstransferaseGolgi ApparatusHumansJurkat CellsMCF-7 CellsProtein PrenylationProtein Transportrab GTP-Binding ProteinsAnticholesteremic AgentsCeramidesGeranyltranstransferaserab GTP-Binding ProteinsglucosylceramideGolgilactotriaosylceramideUGCGVerotoxin-cholera toxin retrograde transport

Identifiers

PMID26405105
PMCPMC4691287
OpenAlexW2175362852

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.