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- W1605856232 abstract "We here report the apoptotic death of a fungus, Cryptococcus neoformans (C. neoformans), in response to adherence of the pathogenic bacterium Staphylococcus aureus (S. aureus). In co-culture, cryptococcal actin was visibly aggregated. To investigate the mechanism of death, the participation of small GTP(guanosine triphosphate)-binding proteins belonging to the Rho subfamily, which regulate the actin cytoskeleton, was explored. C. neoformans was cultured with S. aureus in the presence of N-(4-pyridyl)-4-(1-aminoethyl)cyclohexanecarboxamide (Y-27632), an inhibitor of Rho-associated coiled-coil forming kinase (ROCK), a downstream effector of Rho. Death of C. neoformans was significantly reduced by the inhibitor. Concomitantly, Y-27632 prevented the aggregation of actin. Therefore, it was concluded that the Rho/ROCK pathway is involved in cell death induced by adherence stress. Increased expression of the voltage-dependent anion channel (VDAC), located in the mitochondrial outer membrane, has previously been observed in the apoptosis-like death of C. neoformans in the presence of hydrogen peroxide. Ruthenium red (RuR), which binds to VDAC and inhibits cytochrome c release, was used to determine the involvement of VDAC following adherence stress caused by S. aureus. RuR treatment increased the viability of C. neoformans co-cultured with S. aureus in a dose dependent manner. These findings suggest that Rho-ROCK signaling could be involved, via a mitochondrial pathway, in the apoptosis-like death of C. neoformans induced by the adherence of S. aureus." @default.
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- W1605856232 date "2011-07-28" @default.
- W1605856232 modified "2023-09-24" @default.
- W1605856232 title "Possible participation of the Rho/Rho-associated coiled-coil-forming kinase pathway in the cell death of Cryptococcus neoformans caused by Staphylococcus aureus adherence" @default.
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- W1605856232 doi "https://doi.org/10.1111/j.1348-0421.2011.00356.x" @default.
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