Evidence map›Paper›PMID 30976784›Full record

ArticleGlycobiology2019

Characterizing the selectivity of ER α-glucosidase inhibitors.

Sarah O'Keefe, Quentin P Roebuck, Izumi Nakagome, Shuichi Hirono, Atsushi Kato, Robert Nash, Stephen High

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Glycobiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.3field-weighted citation impact, top 23% 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

9 citing papers in PubMed, 23 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. ACS central science · 2024
    Article
  5. Biochemical and Biological Assays of Mycolactone-Mediated Inhibition of Sec61.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  6. The glycosylation in SARS-CoV-2 and its receptor ACE2.Signal transduction and targeted therapy · 2021
    Review
  7. Article
  8. Article
  9. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 2 countries.

Sarah O'KeefeSchool of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Quentin P RoebuckSchool of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Izumi NakagomeSchool of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan.
Shuichi HironoSchool of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan.
Atsushi KatoDepartment of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama, Japan.
Robert NashPhytoQuest Ltd, Plas Gogerddan, Aberystwyth, Ceredigion, UK.
Stephen HighSchool of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
University of Manchester · GBKitasato University · JPAberystwyth University · GBToyama University Hospital · JP

Funding

Biotechnology and Biological Sciences Research Council BB/J014478/1Wellcome Trust 204957/Z/16/Z
6 · The paper itself

Abstract

The endoplasmic reticulum (ER) contains both α-glucosidases and α-mannosidases which process the N-linked oligosaccharides of newly synthesized glycoproteins and thereby facilitate polypeptide folding and glycoprotein quality control. By acting as structural mimetics, iminosugars can selectively inhibit these ER localized α-glycosidases, preventing N-glycan trimming and providing a molecular basis for their therapeutic applications. In this study, we investigate the effects of a panel of nine iminosugars on the actions of ER luminal α-glucosidase I and α-glucosidase II. Using ER microsomes to recapitulate authentic protein N-glycosylation and oligosaccharide processing, we identify five iminosugars that selectively inhibit N-glycan trimming. Comparison of their inhibitory activities in ER microsomes against their effects on purified ER α-glucosidase II, suggests that 3,7a-diepi-alexine acts as a selective inhibitor of ER α-glucosidase I. The other active iminosugars all inhibit α-glucosidase II and, having identified 1,4-dideoxy-1,4-imino-D-arabinitol (DAB) as the most effective of these compounds, we use in silico modeling to understand the molecular basis for this enhanced activity. Taken together, our work identifies the C-3 substituted pyrrolizidines casuarine and 3,7a-diepi-alexine as promising "second-generation" iminosugar inhibitors.

Indexed as

alpha-GlucosidasesAnimalsArabinoseDogsEndoplasmic ReticulumGlycoside Hydrolase InhibitorsHumansImino FuranosesMiceMicrosomesPyrrolizidine AlkaloidsSugar Alcohols1,4-dideoxy-1,4-iminoarabinitolalpha-GlucosidasesArabinoseaustralineGlycoside Hydrolase InhibitorsImino FuranosesPyrrolizidine AlkaloidsSugar Alcoholsendoplasmic reticulumglucose trimmingiminosugar inhibitorsN-linked glycosylation

Identifiers

PMID30976784
PMCPMC6583763
OpenAlexW2936336544

What OpenQuestion holds

Textmetadata
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.