Evidence map›Paper›PMID 33040492›Full record

ArticleMolecular oral microbiology2021

Multiple factors are involved in regulation of extracellular membrane vesicle biogenesis in Streptococcus mutans.

Zezhang T Wen, Ashton N Jorgensen, Xiaochang Huang, Kassapa Ellepola, Lynne Chapman, Hui Wu, L Jeannine Brady

Open access · greenAbstract read
In one paragraph

Article in Molecular oral microbiology, 2021. 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
1.3field-weighted citation impact, top 22% 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, 23 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Recent advances in membrane vesicles ofJournal of oral microbiology · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. A brief review of membrane vesicles fromFrontiers in microbiology · 2025
    Review
  9. Review
  10. Article
  11. Review
  12. Review
  13. Article
  14. [Research Updates: Cariogenic Mechanism ofSichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2022
    Review
  15. Frontiers in cellular and infection microbiology · 2022
    Article
  16. Article
  17. Review
  18. 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

7 authors at 3 institutions in 1 country.

Zezhang T WenDepartment of Oral and Craniofacial Biology, School of Dentistry and Department of Microbiology, Immunology and Parasitology, School of Medicine, Louisiana State University Health, New Orleans, LA, USA.ORCID 0000-0001-8540-3420
Ashton N JorgensenDepartment of Oral and Craniofacial Biology, School of Dentistry and Department of Microbiology, Immunology and Parasitology, School of Medicine, Louisiana State University Health, New Orleans, LA, USA.
Xiaochang HuangDepartment of Oral and Craniofacial Biology, School of Dentistry and Department of Microbiology, Immunology and Parasitology, School of Medicine, Louisiana State University Health, New Orleans, LA, USA.
Kassapa EllepolaDepartment of Oral and Craniofacial Biology, School of Dentistry and Department of Microbiology, Immunology and Parasitology, School of Medicine, Louisiana State University Health, New Orleans, LA, USA.
Lynne ChapmanDepartment of Oral and Craniofacial Biology, School of Dentistry and Department of Microbiology, Immunology and Parasitology, School of Medicine, Louisiana State University Health, New Orleans, LA, USA.
Hui WuDepartment of Integrative Biomedical and Diagnostics Science, School of Dentistry, Oregon Health and Science University, Portland, OR, USA.ORCID 0000-0003-2818-756X
L Jeannine BradyDepartment of Oral Biology, School of Dentistry, the University of Florida, Gainesville, FL, USA.ORCID 0000-0001-8952-086X
Louisiana State University Health Sciences Center New Orleans · USOregon Health & Science University · USUniversity of Florida · US

Funding

MEMBRANES OF THE DENTAL PATHOGEN STREPTOCOCCUS MUTANSR01DE008007 · NIDCR · UNIVERSITY OF FLORIDA · PI L. Jeannine Brady, Surabhi Mishra · 1986 to 2026
$8.6M
BrpA in Virulence Modulation of Streptococcus mutansR01DE019452 · NIDCR · LSU HEALTH SCIENCES CENTER · PI ZEZHANG TOM WEN, Hui Wu · 2009 to 2026
$6.3M
Glycosylation & Function of an Oral Streptococcal AdhesinR01DE017954 · NIDCR · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI WU, HUI · 2007 to 2022
$5.8M
SMALL MOLECULE INHIBITORS OF CARIOGENIC BIOFILMSR01DE022350 · NIDCR · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI Christian Corey Melander, Hui Wu · 2012 to 2026
$4.3M
Functional Amyloid Formation in Streptococcus mutansR01DE021789 · NIDCR · UNIVERSITY OF FLORIDA · PI BRADY, L. JEANNINE, LONG, JOANNA R · 2012 to 2021
$3.7M
BACTERIAL SECOND MESSENGER MEDIATED VIRULENCE REGULATION IN STREPTOCOCCUS MUTANSR01DE028329 · NIDCR · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI WU, HUI · 2019 to 2023
$1.7M
eDNA Secretion and eDNA-Cell Interactions in Biofilm FormationR21DE025348 · NIDCR · LSU HEALTH SCIENCES CENTER · PI BRADY, L. JEANNINE, WEN, ZEZHANG TOM · 2016 to 2017
$419k
NIDCR NIH HHS R01 DE008007NIDCR NIH HHS R01 DE017954NIDCR NIH HHS R01 DE019452NIDCR NIH HHS R01 DE021789NIDCR NIH HHS R01 DE022350NIDCR NIH HHS R01 DE028329NIDCR NIH HHS R21 DE025348
6 · The paper itself

Abstract

Streptococcus mutans, a major etiological agent of human dental caries, produces membrane vesicles (MVs) that contain protein and extracellular DNA. In this study, functional genomics, along with in vitro biofilm models, was used to identify factors that regulate MV biogenesis. Our results showed that when added to growth medium, MVs significantly enhanced biofilm formation by S. mutans, especially during growth in sucrose. This effect occurred in the presence and absence of added human saliva. Functional genomics revealed several genes, including sfp, which have a major effect on S. mutans MVs. In Bacillus sp. sfp encodes a 4'-phosphopantetheinyl transferase that contributes to surfactin biosynthesis and impacts vesiculogenesis. In S. mutans, sfp resides within the TnSmu2 Genomic Island that supports pigment production associated with oxidative stress tolerance. Compared to the UA159 parent, the Δsfp mutant, TW406, demonstrated a 1.74-fold (p < .05) higher MV yield as measured by BCA protein assay. This mutant also displayed increased susceptibility to low pH and oxidative stressors, as demonstrated by acid killing and hydrogen peroxide challenge assays. Deficiency of bacA, a putative surfactin synthetase homolog within TnSmu2, and especially dac and pdeA that encode a di-adenylyl cyclase and a phosphodiesterase, respectively, also significantly increased MV yield (p < .05). However, elimination of bacA2, a bacitracin synthetase homolog, resulted in a >1.5-fold (p < .05) reduction of MV yield. These results demonstrate that S. mutans MV properties are regulated by genes within and outside of the TnSmu2 island, and that as a major particulate component of the biofilm matrix, MVs significantly influence biofilm formation.

Indexed as

Dental CariesStreptococcus mutansBacterial ProteinsBiofilmsCulture MediaGene Expression Regulation, BacterialHumansBacterial ProteinsCulture Mediabiofilm formationmembrane vesiclesStreptococcus mutansstress tolerance responsevesiculogenesis

Identifiers

PMID33040492
PMCPMC7940556
OpenAlexW3092459255

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.