Cited by 64Oral microbiology and periodontitis researchProbiotics and Fermented FoodsBacterial biofilms and quorum sensing

Lactobacilli postbiotics reduce biofilm formation and alter transcription of virulence genes of Aggregatibacter actinomycetemcomitans

Ishikawa, Karin H., Bueno, Manuela R., Kawamoto, Dione, Simionato, Maria R. L., Mayer, Marcia P. A.·2021·Molecular Oral Microbiology

Abstract

Abstract Periodontitis is characterized by a dysbiotic microbial community and treatment strategies include the reestablishment of symbiosis by reducing pathogens abundance. Aggregatibacter actinomycetemcomitans (Aa) is frequently associated with rapidly progressing periodontitis. Since the oral ecosystem may be affected by metabolic end‐products of bacteria, we evaluated the effect of soluble compounds released by probiotic lactobacilli, known as postbiotics, on Aa biofilm and expression of virulence‐associated genes. Cell‐free pH‐neutralized supernatants (CFS) of Lactobacillus rhamnosus Lr32, L . rhamnosus HN001, Lactobacillus acidophilus LA5, and L . acidophilus NCFM were tested against a fimbriated clinical isolate of Aa JP2 genotype (1 × 10 7 CFU/well) on biofilm formation for 24 hr, and early and mature preformed biofilms (2 and 24 hr). Lactobacilli CFS partially reduced Aa viable counts and biofilms biomass, but did not affect the number of viable non‐adherent bacteria, except for LA5 CFS. Furthermore, LA5 CFS and, in a lesser extent HN001 CFS, influenced Aa preformed biofilms. Lactobacilli postbiotics altered expression profile of Aa in a strain‐specific fashion. Transcription of cytolethal distending toxin ( cdtB ) and leukotoxin ( ltxA ) was downregulated by CFS of LA5 and LR32 CFS. Although all probiotics produced detectable peroxide, transcription of katA was downregulated by lactobacilli CFS. Transcription of dspB was abrogated by LR32 and NCFM CFS, but increased by HN001, whereas expression of pgA was not affected by any postbiotic. Our data indicated the potential of postbiotics from lactobacilli, especially LA5, to reduce colonization levels of Aa and to modulate the expression of virulence factors implicated in evasion of host defenses.

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Crossref · 10.1111/omi.12330

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  • Cell-free supernatants of Lactobacillus rhamnosus and Lactobacillus acidophilus can exert an antibiofilm effect by impairing biofilm integrity and reducing the expression of biofilm-associated genes of periodontal pathogens.

    “Cell-free supernatants of Lactobacillus rhamnosus and Lactobacillus acidophilus can exert an antibiofilm effect by impairing biofilm integrity and reducing the expression of the biofilm-associated genes of periodontal pathogens [13,14].”

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Authors
Ishikawa, K. H., Bueno, M. R., Kawamoto, D., Simionato, M. R. L., & Mayer, M. P. A.
Affiliations
  • Universidade de São Paulo (BR)
  • Department of Microbiology Institute of Biomedical Sciences University of São Paulo São Paulo Brazil
Venue
Molecular Oral Microbiology
Publisher
Wiley
Published
2021-01-17
Volume
36
Issue
1
Pages
92-102
ISSN
  • 2041-1006 (ISSN-L)
  • 2041-1014
OpenAlex
W3117603122
Cited by
64
References
75
Citations by year
2026: 5 · 2025: 19 · 2024: 17 · 2023: 7 · 2022: 14 · 2021: 2
FWCI
5.85
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular Oral Microbiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Fundação de Amparo à Pesquisa do Estado de São Paulo (2015/18273‐9, 2016/13156‐7, 2017/16377‐7)
Topics
  • Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bacterial biofilms and quorum sensing
Keywords
Aggregatibacter actinomycetemcomitans, biofilm formation, virulence gene expression, periodontitis, Lactobacillus acidophilus LA-5, Lactobacillus rhamnosus, cell-free supernatant, cytolethal distending toxin, leukotoxin, kata, PGA, probiotics, oral dysbiosis
MeSH terms
Lactobacillus, Virulence, Aggregatibacter actinomycetemcomitans, Ecosystem, Biofilms, Probiotics

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