Evidence map›Paper›PMID 21930648›Full record

ArticleGlycobiology2012

Differential glycosylation of α-dystroglycan and proteins other than α-dystroglycan by like-glycosyltransferase.

Peng Zhang, Huaiyu Hu

Open access · bronzeAbstract read
In one paragraph

Article in Glycobiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.0field-weighted citation impact, top 13% 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

22 citing papers in PubMed, 29 citations in OpenAlex.

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  8. Carbohydrate-binding domain of the POMGnT1 stem region modulates O-mannosylation sites of α-dystroglycan.Proceedings of the National Academy of Sciences of the United States of America · 2016
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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

2 authors at 1 institution in 1 country.

Peng ZhangDepartment of Neuroscience and Physiology, SUNY Upstate Medical University, 750 E. Adams Street, Syracuse, NY 13210, USA.
Huaiyu Hu
SUNY Upstate Medical University · US

Funding

Regulation of Cell-extracellular Matrix Interactions at the Brain SurfaceR01HD060458 · NICHD · UPSTATE MEDICAL UNIVERSITY · PI HU, HUAIYU · 2009 to 2013
$1.4M
Molecular Studies of Brain MalformationsR01NS066582 · NINDS · UPSTATE MEDICAL UNIVERSITY · PI HU, HUAIYU · 2009 to 2011
$612k
NICHD NIH HHS HD060458NINDS NIH HHS NS066582
6 · The paper itself

Abstract

Genetic defects in like-glycosyltransferase (LARGE) cause congenital muscular dystrophy with central nervous system manifestations. The underlying molecular pathomechanism is the hypoglycosylation of α-dystroglycan (α-DG), which is evidenced by diminished immunoreactivity to IIH6C4 and VIA4-1, antibodies that recognize carbohydrate epitopes. Previous studies indicate that LARGE participates in the formation of a phosphoryl glycan branch on O-linked mannose or it modifies complex N- and mucin O-glycans. In this study, we overexpressed LARGE in neural stem cells deficient in protein O-mannosyltransferase 2 (POMT2), an enzyme required for O-mannosyl glycosylation. The results showed that overexpressing LARGE did not lead to hyperglycosylation of α-DG in POMT2 knockout (KO) cells but did generate IIH6C4 and VIA4-1 immunoreactivity and laminin-binding activity. Additionally, overexpressing LARGE in cells deficient in both POMT2 and α-DG generated laminin-binding IIH6C4 immunoreactivity. These results indicate that LARGE expression resulted in the glycosylation of proteins other than α-DG in the absence of O-mannosyl glycosylation. The IIH6C4 immunoreactivity generated in double-KO cells was largely removed by treatment either with peptide N-glycosidase F or with cold aqueous hydrofluoric acid, suggesting that LARGE expression caused phosphoryl glycosylation of N-glycans. However, the glycosylation of α-DG by LARGE is dependent on POMT2, indicating that LARGE expression only modifies O-linked mannosyl glycans of α-DG. Thus, LARGE expression mediates the phosphoryl glycosylation of not only O-mannosyl glycans including those on α-DG but also N-glycans on proteins other than α-DG.

Indexed as

AnimalsDystroglycansGene Knockout TechniquesGlycoproteinsGlycosylationGlycosyltransferasesLamininMannosyltransferasesMiceMice, KnockoutMuscular DystrophiesNeural Stem CellsPolysaccharidesProtein BindingDystroglycansGlycoproteinsGlycosyltransferasesLamininMannosyltransferasesPolysaccharidesprotein O-mannosyltransferase

Identifiers

PMID21930648
PMCPMC3255506
OpenAlexW2169596938

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.