Penicillin G-induced microbicidal activity of Endothelial cells cultured on gelfoam blocks

Bin Zhang, Michelle Centra, Guan Liang Cao, Robert M. Taylor, Roman E. Ratych, Gerald M. Rosen

Research output: Contribution to journalArticlepeer-review

Abstract

A body of evidence has surfaced documenting the ability of endothelial cells cultured on monolayers to phagocytose but not kill bacteria. Several years ago, a new three-dimensional endothelial cell culturing model was developed, which simulated the morphology of the endothelium in small vessels and capillaries. Given that endothelial cells may be derived from the same pluripotent stem cells as macrophages, the question of whether endothelial cells might phagocytose and kill bacteria was explored. Endothelial cells grown on Gelfoam blocks exhibited bactericidal activity towards Staphylococcus aureus, reaching maximal killing of >90% after 2 h. Evidence documents the involvement of bacterial adherence to the plasma membrane of the endothelial cell. This is followed by phagocytosis of S. aureus, leading to intracellular killing. Penicillin G, included in the endothelial cell growth medium, was found to be a critical factor in the bactericidal activity demonstrated by Gelfoam blocks laden with endothelial cells.

Original languageEnglish (US)
Pages (from-to)1001-1009
Number of pages9
JournalJournal of Infectious Diseases
Volume174
Issue number5
DOIs
StatePublished - 1996

ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases

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