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Apoptosis induced by Staphylococcus aureus in epithelial cells utilizes a mechanism involving caspases 8 and 3.


ABSTRACT: In this study, we demonstrate that the mechanism by which Staphylococcus aureus induces apoptosis in bovine mammary epithelial (MAC-T) cells involves caspases 8 and 3, two key components of a proteolytic cascade leading to apoptosis. In addition, internalized S. aureus induces expression of the inflammatory cytokines tumor necrosis factor alpha and interleukin-1beta by MAC-T cells. These data suggest that the internalization of S. aureus could induce specific cellular responses in vivo that may ultimately impact the course of infection.

SUBMITTER: Wesson CA 

PROVIDER: S-EPMC97517 | biostudies-literature | 2000 May

REPOSITORIES: biostudies-literature

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Apoptosis induced by Staphylococcus aureus in epithelial cells utilizes a mechanism involving caspases 8 and 3.

Wesson C A CA   Deringer J J   Liou L E LE   Bayles K W KW   Bohach G A GA   Trumble W R WR  

Infection and immunity 20000501 5


In this study, we demonstrate that the mechanism by which Staphylococcus aureus induces apoptosis in bovine mammary epithelial (MAC-T) cells involves caspases 8 and 3, two key components of a proteolytic cascade leading to apoptosis. In addition, internalized S. aureus induces expression of the inflammatory cytokines tumor necrosis factor alpha and interleukin-1beta by MAC-T cells. These data suggest that the internalization of S. aureus could induce specific cellular responses in vivo that may  ...[more]

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