Targeting mucosal dendritic cells with microbial antigens from probiotic lactic acid bacteria

Mansour Mohamadzadeh, Tri Duong, Timothy Hoover, Todd R. Klaenhammer

Research output: Contribution to journalReview articlepeer-review

53 Scopus citations


The use of vaccines against infectious microbes has been critical to the advancement of medicine. Vaccine strategies combined with, or without, adjuvants have been established to eradicate various bacterial and viral pathogens. A new generation of vaccines is being developed using specific strains of Gram-positive, lactic acid bacteria and, notably, some probiotic lactobacilli. These bacteria have been safely consumed by humans for centuries in fermented foods. Thus, they can be orally administered, are well tolerated by recipients and could be easily and economically provided to large populations. In this overview, we focus on mucosal immunity and how its cellular component(s), particularly dendritic cells, can be specifically targeted to deliver immunogenic subunits, such as the protective antigen from Bacillus anthracis (the causative agent of anthrax). An antigen-specific immune response can be elicited using specific strains of Lactobacillus acidophilus expressing the protective antigen. A mucosal, dendritic cell-targeted approach increases the bioavailability of an immunogen of interest when delivered orally by L. acidophilus. This provides an efficiently elegant natural strategy and serves a dual function as an immune-stimulating adjuvant in vivo.

Original languageEnglish (US)
Pages (from-to)163-174
Number of pages12
JournalExpert Review of Vaccines
Issue number2
StatePublished - Mar 2008
Externally publishedYes


  • Adjuvant
  • Dendritic cell
  • M cell
  • Macrophage
  • Mucosal immunity
  • Probiotic bacteria
  • T regulatory cell
  • Targeting antigen by specific dendritic cell-binding peptides
  • Th17 cell
  • Vaccine delivery

ASJC Scopus subject areas

  • Drug Discovery
  • Molecular Medicine
  • Pharmacology
  • Immunology


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