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Adipose Tissue-Derived Mesenchymal Stem Cells Attenuate Staphylococcal Enterotoxin A-Induced Toxic Shock.

Abstract
Adipose tissue-derived stem cells (ASCs), which are mesenchymal stromal cells isolated from adipose tissues, exhibit immunomodulatory effects that are promising for several applications, including the therapeutics of inflammatory diseases. In the present study, the effect of ASCs on bacterial toxin-induced inflammation was investigated. Intraperitoneal administration of ASCs rescued mice from lethal shock induced by staphylococcal enterotoxin A (SEA) potentiated with lipopolysaccharide. In the sera and/or spleens of mice administered ASCs, the production of proinflammatory cytokines, including interferon gamma, tumor necrosis factor alpha, interleukin-6 (IL-6), and IL-2 was reduced. By quantitative real-time PCR, the expression of Foxp3 in the mice administered ASCs was not altered. On the other hand, the expression of IL-12 receptor and STAT4 was decreased with ASC administration. These results imply that the effect of ASCs is not involved in the lineage of regulatory T cells but that these cells may modulate TH1 differentiation. This information provides evidence that ASCs have properties that are effective to attenuate SEA-induced toxic shock and should prompt further exploration on other inflammatory diseases caused by bacterial toxins or bacterial infections.
AuthorsKrisana Asano, Sayuri Yoshimura, Akio Nakane
JournalInfection and immunity (Infect Immun) Vol. 83 Issue 9 Pg. 3490-6 (Sep 2015) ISSN: 1098-5522 [Electronic] United States
PMID26099581 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
CopyrightCopyright © 2015, American Society for Microbiology. All Rights Reserved.
Chemical References
  • Enterotoxins
  • enterotoxin A, Staphylococcal
Topics
  • Adipose Tissue (cytology)
  • Animals
  • Disease Models, Animal
  • Enterotoxins (toxicity)
  • Mesenchymal Stem Cell Transplantation (methods)
  • Mesenchymal Stem Cells (physiology)
  • Mice
  • Mice, Inbred BALB C
  • Real-Time Polymerase Chain Reaction
  • Shock, Septic (immunology)

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