Evidence map›Paper›PMID 24957828›Full record

ArticleAntimicrobial agents and chemotherapy2014

Relationship between glycopeptide production and resistance in the actinomycete Nonomuraea sp. ATCC 39727.

Giorgia Letizia Marcone, Elisa Binda, Lucia Carrano, Mervyn Bibb, Flavia Marinelli

Open access · bronzeAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

18 citing papers in PubMed, 29 citations in OpenAlex.

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  18. Old and New Glycopeptide Antibiotics: Action and Resistance.Antibiotics (Basel, Switzerland) · 2014
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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

5 authors at 3 institutions in 2 countries.

Giorgia Letizia MarconeDipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Varese, Italy The Protein Factory Research Center, Politecnico di Milano, ICRM CNR Milano and Università degli Studi dell'Insubria, Varese, Italy giorgia.marcone@uninsubria.it.
Elisa BindaDipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Varese, Italy The Protein Factory Research Center, Politecnico di Milano, ICRM CNR Milano and Università degli Studi dell'Insubria, Varese, Italy.
Lucia CarranoFondazione Istituto Insubrico Ricerca per la Vita, Insubrias BioPark, Gerenzano (VA), Italy.
Mervyn BibbJohn Innes Centre, Norwich Research Park, Norwich, United Kingdom.
Flavia MarinelliDipartimento di Biotecnologie e Scienze della Vita, Università degli Studi dell'Insubria, Varese, Italy The Protein Factory Research Center, Politecnico di Milano, ICRM CNR Milano and Università degli Studi dell'Insubria, Varese, Italy.
Politecnico di Milano · ITJohn Innes Centre · GBUniversity of Insubria · IT

Funding

Biotechnology and Biological Sciences Research Council BBS/E/J/00000607
6 · The paper itself

Abstract

Glycopeptides and β-lactams inhibit bacterial peptidoglycan synthesis in Gram-positive bacteria; resistance to these antibiotics is studied intensively in enterococci and staphylococci because of their relevance to infectious disease. Much less is known about antibiotic resistance in glycopeptide-producing actinomycetes that are likely to represent the evolutionary source of resistance determinants found in bacterial pathogens. Nonomuraea sp. ATCC 39727, the producer of A40926 (the precursor for the semisynthetic dalbavancin), does not harbor the canonical vanHAX genes. Consequently, we investigated the role of the β-lactam-sensitive D,D-peptidase/D,D-carboxypeptidase encoded by vanYn, the only van-like gene found in the A40926 biosynthetic gene cluster, in conferring immunity to the antibiotic in Nonomuraea sp. ATCC 39727. Taking advantage of the tools developed recently to genetically manipulate this uncommon actinomycete, we varied vanYn gene dosage and expressed vanHatAatXat from the teicoplanin producer Actinoplanes teichomyceticus in Nonomuraea sp. ATCC 39727. Knocking out vanYn, complementing a vanYn mutant, or duplicating vanYn had no effect on growth but influenced antibiotic resistance and, in the cases of complementation and duplication, antibiotic production. Nonomuraea sp. ATCC 39727 was found to be resistant to penicillins, but its glycopeptide resistance was diminished in the presence of penicillin G, which inhibits VanYn activity. The heterologous expression of vanHatAatXat increased A40926 resistance in Nonomuraea sp. ATCC 39727 but did not increase antibiotic production, indicating that the level of antibiotic production is not directly determined by the level of resistance. The vanYn-based self-resistance in Nonomuraea sp. ATCC 39727 resembles the glycopeptide resistance mechanism described recently in mutants of Enterococcus faecium selected in vitro for high-level resistance to glycopeptides and penicillins.

Indexed as

ActinobacteriaBacterial ProteinsCarboxypeptidasesDrug Resistance, BacterialGene DosageGene Expression Regulation, BacterialGene Knockout TechniquesGlycopeptidesMembrane ProteinsMicrobial Sensitivity TestsTeicoplaninA 40926Bacterial ProteinsCarboxypeptidasesGlycopeptidesMembrane ProteinsTeicoplaninVanY protein, Bacteria

Identifiers

PMID24957828
PMCPMC4135873
OpenAlexW2157681499

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.