Evidence map›Paper›PMID 25351946›Full record

ArticleThe Journal of antibiotics2015

Tackling vancomycin-resistant bacteria with 'lipophilic-vancomycin-carbohydrate conjugates'.

Venkateswarlu Yarlagadda, Mohini M Konai, Goutham B Manjunath, Chandradhish Ghosh, Jayanta Haldar

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In one paragraph

Article in The Journal of antibiotics, 2015. 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
3.9field-weighted citation impact, top 6% 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, 70 citations in OpenAlex.

  1. Strategic re-engineering of antibiotics.Nature reviews bioengineering · 2025
    Article
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  6. Article
  7. Review
  8. Article
  9. Review
  10. Review
  11. Article
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  13. Article
  14. Developments in Glycopeptide Antibiotics.ACS infectious diseases · 2018
    Article
  15. Oversized galactosides as a probe for conformational dynamics in LacY.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  16. Article
  17. Review
  18. Review of vancomycin-induced renal toxicity: an update.Therapeutic advances in endocrinology and metabolism · 2016
    Review
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 1 institution in 1 country.

Venkateswarlu YarlagaddaChemical Biology and Medicinal Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, India.
Mohini M KonaiChemical Biology and Medicinal Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, India.
Goutham B ManjunathChemical Biology and Medicinal Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, India.
Chandradhish GhoshChemical Biology and Medicinal Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, India.
Jayanta HaldarChemical Biology and Medicinal Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, India.
Jawaharlal Nehru Centre for Advanced Scientific Research · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Vancomycin, a glycopeptide antibiotic, has long been a drug of choice for life-threatening Gram-positive bacterial infections. Vancomycin confers its antibacterial activity by inhibiting bacterial cell wall biosynthesis. However, over the time, vancomycin has also been rendered ineffective by vancomycin-resistant bacteria (VRB). These bacteria developed resistance to it by alteration of cell wall precursor from D-Ala-D-Ala to D-Ala-D-Lac (vancomycin-resistant Enterococci, VRE), which leads to manifold reduction in the binding constant and results in the loss of antibacterial activity. Herein, we report various vancomycin-sugar analogs, based on a simple design rationale, which exhibit increased binding affinity to VRB, thereby resensitizing VRB to vancomycin. Optimized vancomycin-sugar conjugate exhibited 150-fold increase in affinity for N,N'-diacetyl-Lys-D-Ala-D-Lac compared with vancomycin. This improved binding affinity was also reflected in its antibacterial activity, wherein the MIC value was brought down from 750 to 36 μM against VRE (VanA phenotype). To further sensitize against VRE, we appended lipophilic alkyl chain to optimized vancomycin-sugar conjugate. This lipophilic-vancomycin-sugar conjugate was >1000-fold (MIC=0.7 μM) and 250-fold (MIC=1 μM) more effective against VanA and VanB strains of VRE, respectively, compared with vancomycin. Therefore, this synthetically simple approach could lead to the development of new generation of glycopeptide antibiotics, which can be clinically used to tackle VRB infections.

Indexed as

Vancomycin ResistanceAnti-Bacterial AgentsCarbohydrate ConformationCarbohydratesEnterococcusMicrobial Sensitivity TestsMolecular StructurePeptidesProtein BindingVancomycinAnti-Bacterial AgentsCarbohydratesPeptidesVancomycin

Identifiers

PMID25351946
OpenAlexW2314341823

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.