Evidence map›Paper›PMID 24550179›Full record

ArticlePathogens and disease2014

Identification, immunogenicity, and cross-reactivity of type IV pilin and pilin-like proteins from Clostridium difficile.

Grace A Maldarelli, Leon De Masi, Erik C von Rosenvinge, Mihaela Carter, Michael S Donnenberg

Open access · bronzeAbstract read
In one paragraph

Article in Pathogens and disease, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing 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

20 citing papers in PubMed, 32 citations in OpenAlex.

  1. Review
  2. Journal of bacteriology · 2026
    Article
  3. Review
  4. bioRxiv : the preprint server for biology · 2025
    Article
  5. Article
  6. Clostridioides difficile Biofilm.Advances in experimental medicine and biology · 2024
    Article
  7. Review
  8. Article
  9. Regulatory transcription factors ofCritical reviews in microbiology · 2023
    Review
  10. Review
  11. Article
  12. TargetingFrontiers in microbiology · 2018
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article
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.

Grace A MaldarelliDepartment of Medicine, Divisions of Infectious Disease, University of Maryland School of Medicine, Baltimore, MD, USA.
Leon De Masi
Erik C von Rosenvinge
Mihaela Carter
Michael S Donnenberg
University of Maryland, Baltimore · US

Funding

Research Training in Gastroenterology and HepatologyT32DK067872 · NIDDK · UNIVERSITY OF MARYLAND BALTIMORE · PI RAUFMAN, JEAN-PIERRE · 2005 to 2024
$7.2M
Structure and Role in Disease of Clostridium difficile Type IV PiliR21AI105881 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI DONNENBERG, MICHAEL S · 2013 to 2014
$422k
Vaccine Potential of Type IV Pilin from Clostridium difficleR03AI097953 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI DONNENBERG, MICHAEL S · 2012 to 2013
$154k
NIAID NIH HHS R03AI09795NIAID NIH HHS R03 AI097953NIAID NIH HHS R21 AI105881NIDDK NIH HHS T32 DK067872NIDDK NIH HHS T32DK067872
6 · The paper itself

Abstract

The Gram-positive anaerobe Clostridium difficile is the major cause of nosocomial diarrhea; manifestations of infection include diarrhea, pseudomembranous colitis, and death. Genes for type IV pili, a bacterial nanofiber often involved in colonization and until relatively recently described only in Gram-negatives, are present in all members of the Clostridiales. We hypothesized that any pilins encoded in the C. difficile genome would be immunogenic, as has been shown with pilins from Gram-negative organisms. We describe nine pilin or pilin-like protein genes, for which we introduce a coherent nomenclature, in the C. difficile R20291 genome. The nine predicted pilin or pilin-like proteins have relatively conserved N-terminal hydrophobic regions, but diverge at their C-termini. Analysis of synonymous and nonsynonymous substitutions revealed evidence of diversifying selective pressure in two pilin genes. Six of the nine identified proteins were purified and used to immunize mice. Immunization of mice with each individual protein generated antibody responses that varied in titer and cross-reactivity, a notable result given the low amino acid sequence identity among the pilins. Further studies in other small mammals mirrored our results in mice. Our results illuminate components of the C. difficile type IV pilus and help identify targets for an anti-C. difficile vaccine.

Indexed as

AnimalsAntibodies, BacterialAntigens, BacterialBacterial VaccinesClostridioides difficileEvolution, MolecularFimbriae ProteinsGenetic VariationGuinea PigsMiceMutationRabbitsSelection, GeneticVaccines, SubunitAntibodies, BacterialAntigens, BacterialBacterial VaccinesFimbriae ProteinsVaccines, SubunitantibodiesClostridium difficilecross-reactivityimmunogenicitypilin proteinstype IV pili

Identifiers

PMID24550179
PMCPMC4130776
OpenAlexW2097077186

What OpenQuestion holds

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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.