Evidence map›Paper›PMID 24980969›Full record

ArticleInfection and immunity2014

The AgrD N-terminal leader peptide of Staphylococcus aureus has cytolytic and amyloidogenic properties.

Kelly Schwartz, Matthew D Sekedat, Adnan K Syed, Brendan O'Hara, David E Payne, Abigail Lamb, Blaise R Boles

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing 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

28 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
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  3. Determinants of maturation of theJournal of bacteriology · 2024
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  4. Review
  5. Chemical and biomolecular insights into theIsrael journal of chemistry · 2023
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  8. Signal inhibitory receptor on leukocytes-1 recognizes bacterial and endogenous amphipathic α-helical peptides.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2021
    Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. Therapeutic Targeting of theFrontiers in microbiology · 2018
    Review
  18. Defining motility in the Staphylococci.Cellular and molecular life sciences : CMLS · 2017
    Review
  19. Review
  20. 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

7 authors at 1 institution in 1 country.

Kelly SchwartzDepartment of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, Michigan, USA.
Matthew D SekedatDepartment of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, Michigan, USA.
Adnan K SyedDepartment of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, Michigan, USA.
Brendan O'HaraDepartment of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, Michigan, USA.
David E PayneDepartment of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, Michigan, USA.
Abigail LambDepartment of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, Michigan, USA.
Blaise R BolesDepartment of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, Michigan, USA blaise-boles@uiowa.edu.
University of Michigan–Ann Arbor · US

Funding

TRAINING IN MOLECULAR AND CELLULAR CARDIOLOGYT32HL007853 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI David J. Pinsky · 1996 to 2026
$11.6M
Characterization of an extracellular structure produced by Staphylococcus aureusR01AI099065 · NIAID · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI BOLES, BLAISE R · 2013 to 2016
$1.4M
Examination of Staphylococcus aureus interactions with hemoglobinK22AI081748 · NIAID · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI BOLES, BLAISE R · 2010 to 2011
$268k
NHLBI NIH HHS T32 HL007853NHLBI NIH HHS T32HL07853-15NIAID NIH HHS AI081748NIAID NIH HHS K22 AI081748NIAID NIH HHS R01 AI099065
6 · The paper itself

Abstract

Staphylococcus aureus virulence is coordinated through the Agr quorum-sensing system to produce an array of secreted molecules. One important class of secreted virulence factors is the phenol-soluble modulins (PSMs). PSMs are small-peptide toxins that have recently been characterized for their roles in infection, biofilm development, and subversion of the host immune system. In this work, we demonstrate that the signal peptide of the S. aureus quorum-sensing signal, AgrD, shares structural and functional similarities with the PSM family of toxins. The efficacy of this peptide (termed N-AgrD) beyond AgrD propeptide trafficking has never been described before. We observe that N-AgrD, like the PSMs, is found in the amyloid fibrils of S. aureus biofilms and is capable of forming and seeding amyloid fibrils in vitro. N-AgrD displays cytolytic and proinflammatory properties that are abrogated after fibril formation. These data suggest that the N-AgrD leader peptide affects S. aureus biology in a manner similar to that described previously for the PSM peptide toxins. Taken together, our findings suggest that peptide cleavage products can affect cellular function beyond their canonical roles and may represent a class of virulence factors warranting further exploration.

Indexed as

AmyloidBacterial ProteinsBiofilmsHumansNeutrophilsPeptides, CyclicProtein Sorting SignalsQuorum SensingStaphylococcal InfectionsStaphylococcus aureusVirulenceVirulence FactorsAgrD protein, StaphylococcusAmyloidBacterial ProteinsPeptides, CyclicProtein Sorting SignalsVirulence Factors

Identifiers

PMID24980969
PMCPMC4187843
OpenAlexW2105683857

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.