1. Mechanisms of Staphylococcus aureus invasion of cultured osteoblasts.
- Author
-
Ellington JK, Reilly SS, Ramp WK, Smeltzer MS, Kellam JF, and Hudson MC
- Subjects
- Animals, Cadaverine analogs & derivatives, Cadaverine pharmacology, Cell Line, Cell Survival, Colchicine pharmacology, Cytochalasin D pharmacology, Dimethyl Sulfoxide pharmacology, Gentamicins metabolism, Mice, Osteoblasts cytology, Osteoblasts drug effects, Osteoblasts physiology, Osteoblasts microbiology, Staphylococcus aureus physiology
- Abstract
Staphylococcus aureus is a bacterial pathogen causing approximately 80% of all cases of human osteomyelitis. This bacterium can adhere to and become internalized by osteoblasts and previous studies indicate that osteoblasts are active in the internalization process. In the current study, we examined the roles of microfilaments, microtubules and clathrin-dependent receptor-mediated endocytosis in the internalization of S. aureus by MC3T3-E1 mouse osteoblast cells. Microfilament and microtubule polymerization was inhibited with cytochalasin D and colchicine. Clathrin-coated pit formation was examined by using the transaminase inhibitor, monodanslycadaverine. The results of this study indicate that mouse osteoblasts utilize actin microfilaments, microtubules and clathrin-coated pits in the internalization of S. aureus; however, microfilaments seem to play the most significant role in the invasion process., (Copyright 1999 Academic Press.)
- Published
- 1999
- Full Text
- View/download PDF