Abstract

Pore forming molecules of the cholesterol-dependent cytolysin family are expressed by various Gram-positive bacteria. The family member pneumolysin (PLY) is a virulence factor associated with Streptococcus pneumoniae (Spn) and forms pores in membranes. PLY contributes to host-mediated macrophage apoptosis, an event which is critical to the eventual resolution of the inflammatory response. We hypothesise that the host response to PLY triggers apoptosis and aim to identify the PLY activity responsible and characterise the specific host-pathogen interaction involving PLY.

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