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Current and novel approaches in yeast cell death research

Chaves, Susana Alexandra Rodrigues; Rego, António; Cátia S. Pereira; Sousa, Maria João; Côrte-Real, Manuela

The study of cell death mechanisms in fungi, particularly yeasts, has gained substantial interest in recent decades driven by the potential for biotechnological advancements and therapeutic interventions. Examples include the development of robust yeast strains for industrial fermentations and high-value compound production, novel food preservation strategies against spoilage yeasts, and the identification of t...


Regulation of cell death induced by acetic acid in yeasts

Chaves, Susana Alexandra Rodrigues; Rego, António; Martins, Vítor M.; Pereira, Cátia Sofia Santos; Sousa, Maria João; Côrte-Real, Manuela

Acetic acid has long been considered a molecule of great interest in the yeast research field. It is mostly recognized as a by-product of alcoholic fermentation or as a product of the metabolism of acetic and lactic acid bacteria, as well as of lignocellulosic biomass pretreatment. High acetic acid levels are commonly associated with arrested fermentations or with utilization as vinegar in the food industry. Du...


Proteasome inhibition prevents cell death induced by the chemotherapeutic agent...

Costa, Ana Rita Martins; Machado, Nuno; Rego, António; Sousa, Maria João; Côrte-Real, Manuela; Chaves, Susana Alexandra Rodrigues

Cisplatin is a highly effective chemotherapeutic drug acting as a DNA-damaging agent that induces apoptosis of rapidly proliferating cells. Unfortunately, cellular resistance still occurs. Mutations in p53 in a large fraction of tumor cells contribute to defects in apoptotic pathways and drug resistance. To uncover new strategies to eliminate tumors through a p53-independent pathway, we established a simplified...


C2-phytoceramide perturbs lipid rafts and cell integrity in Saccharomyces cerev...

Pacheco, Andreia; Azevedo, Flávio; Rego, António; Santos, Júlia; Chaves, S. R.; Côrte-Real, Manuela; Sousa, Maria João

Specific ceramides are key regulators of cell fate, and extensive studies aimed to develop therapies based on ceramide-induced cell death. However, the mechanisms regulating ceramide cytotoxicity are not yet fully elucidated. Since ceramides also regulate growth and stress responses in yeast, we studied how different exogenous ceramides affect yeast cells. C2-phytoceramide, a soluble form of phytoceramides, the...


Modulation of mitochondrial outer membrane permeabilization and apoptosis by ce...

Rego, António; Costa, Margarida; Chaves, Susana Rodrigues; Matmati, Nabil; Pereira, Helena; Sousa, Maria João; Moradas-Ferreira, Pedro; Hannun, Yusuf A

The yeast Saccharomyces cerevisiae undergoes a mitochondrial-dependent programmed cell death in response to different stimuli, such as acetic acid, with features similar to those of mammalian apoptosis. However, the upstream signaling events in this process, including those leading to mitochondrial membrane permeabilization, are still poorly characterized. Changes in sphingolipid metabolism have been linked to ...


The involvement of sphingolipids in apoptosis induced by acetic acid in yeast

Rego, António; Costa, Ana; Chaves, S. R.; Moradas-Ferreira, Pedro; Côrte-Real, Manuela; Costa, Vitor


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