Evidence map›Paper›PMID 24778113›Full record

ArticleInfection and immunity2014

Epithelial microvilli establish an electrostatic barrier to microbial adhesion.

Kaila M Bennett, Sharon L Walker, David D Lo

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 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.7field-weighted citation impact, top 18% 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

25 citing papers in PubMed, 55 citations in OpenAlex.

  1. Review
  2. Electrical Forces in Lumen Formation.Reviews of physiology, biochemistry and pharmacology · 2025
    Review
  3. Review
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  5. Administration of probiotics affectsFish and shellfish immunology reports · 2023
    Article
  6. Oral delivery of RNAi for cancer therapy.Cancer metastasis reviews · 2023
    Review
  7. Copy Number Variation onMicrobiology spectrum · 2023
    Article
  8. Review
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  11. Review
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  14. Review
  15. Article
  16. Review
  17. Review
  18. Article
  19. Review
  20. A human origin strainInternational journal of medical sciences · 2018
    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

3 authors at 1 institution in 1 country.

Kaila M BennettDivision of Biomedical Sciences, School of Medicine, University of California-Riverside, Riverside, California, USA Bioengineering Interdepartmental Graduate Program, University of California-Riverside, Riverside, California, USA.
Sharon L WalkerDepartment of Chemical and Environmental Engineering, University of California-Riverside, Riverside, California, USA.
David D LoDivision of Biomedical Sciences, School of Medicine, University of California-Riverside, Riverside, California, USA david.lo@ucr.edu.
University of California, Riverside · US

Funding

Genes regulating M cell differentiationR01AI063426 · NIAID · UNIVERSITY OF CALIFORNIA RIVERSIDE · PI LO, DAVID D · 2005 to 2016
$3.6M
Electrostatic forces and M cell uptake at mucosal surfacesR21AI098973 · NIAID · UNIVERSITY OF CALIFORNIA RIVERSIDE · PI LO, DAVID D · 2012 to 2013
$418k
NIAID NIH HHS R01 AI063426NIAID NIH HHS R01AI63426NIAID NIH HHS R21 AI098973NIAID NIH HHS R21AI98973
6 · The paper itself

Abstract

Microvilli are membrane extensions on the apical surface of polarized epithelia, such as intestinal enterocytes and tubule and duct epithelia. One notable exception in mucosal epithelia is M cells, which are specialized for capturing luminal microbial particles; M cells display a unique apical membrane lacking microvilli. Based on studies of M cell uptake under different ionic conditions, we hypothesized that microvilli may augment the mucosal barrier by providing an increased surface charge density from the increased membrane surface and associated glycoproteins. Thus, electrostatic charges may repel microbes from epithelial cells bearing microvilli, while M cells are more susceptible to microbial adhesion. To test the role of microvilli in bacterial adhesion and uptake, we developed polarized intestinal epithelial cells with reduced microvilli ("microvillus-minus," or MVM) but retaining normal tight junctions. When tested for interactions with microbial particles in suspension, MVM cells showed greatly enhanced adhesion and uptake of particles compared to microvillus-positive cells. This preference showed a linear relationship to bacterial surface charge, suggesting that microvilli resist binding of microbes by using electrostatic repulsion. Moreover, this predicts that pathogen modification of electrostatic forces may contribute directly to virulence. Accordingly, the effacement effector protein Tir from enterohemorrhagic Escherichia coli O157:H7 expressed in epithelial cells induced a loss of microvilli with consequent enhanced microbial binding. These results provide a new context for microvillus function in the host-pathogen relationship, based on electrostatic interactions.

Indexed as

Static ElectricityBacterial AdhesionCell Line, TumorCloning, MolecularEnterohemorrhagic Escherichia coliEpithelial CellsEscherichia coli ProteinsHumansMicrovilliSurface PropertiesEscherichia coli Proteins

Identifiers

PMID24778113
PMCPMC4097645
OpenAlexW2138083773

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.