Análisis funcional de la subunidad β4 del proteosoma de Candida albicans: evaluación como diana selectiva de nuevos antifúngicos
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2026
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27/10/2025
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Universidad Complutense de Madrid
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Candida albicans es un hongo patógeno oportunista que forma parte de la microbiota de individuos sanos como comensal. Sin embargo, situaciones de inmunodepresión favorecen el desarrollo de infecciones sistémicas en el hospedador como las candidiasis invasivas que tienen una tasa alta de mortalidad. A pesar de la investigación en las últimas décadas el arsenal terapéutico disponible sigue siendo escaso y la aparición de resistencias hace necesario el desarrollo de nuevos antifúngicos.En la célula, el recambio proteico es continuo y dinámico para mantener la proteostasis (homeostasis proteica) y es crucial para prácticamente todos los procesos celulares. En células eucariotas existen dos vías principales de proteolisis: la lisosomal o vacuolar, por osis y autofagia, y la vía proteosomal, a través del proteosoma, que puede ser mediada por ubiquitina. El proteosoma es un complejo multicatalítico con una alta plasticidad y muy selectivo siendo esencial para la viabilidad celular, lo que le postula como una diana ideal para el desarrollo de nuevas terapias antifúngicas...
Candida albicans is an opportunistic pathogenic fungus that is part of the microbiota of healthy individuals as a commensal organism. However, immunosuppressed situations favour the development of systemic infections in the host, such as invasive candidiasis, which is associated with high mortality rates. Despite research efforts in recent decades, the available therapeutic arsenal remains limited, and the emergence of resistance highlights the need for the development of new antifungal agents. Therefore, in this work, we explored protein degradation as a potential target for new antifungal therapies.In the cell, protein turnover is continuous and dynamic to maintain proteostasis (protein homeostasis), which is crucial for virtually all cellular processes. In eukaryotic cells, there are two main pathways for protein degradation: the lysosomal or vacuolar pathway, through endocytosis and autophagy, and the proteasomal pathway, via the proteasome, which can be ubiquitin-mediated. The proteasome is a multicatalytic complex that is highly plastic and selective, and essential for cell viability, making it an ideal target for the development of new antifungal therapies...
Candida albicans is an opportunistic pathogenic fungus that is part of the microbiota of healthy individuals as a commensal organism. However, immunosuppressed situations favour the development of systemic infections in the host, such as invasive candidiasis, which is associated with high mortality rates. Despite research efforts in recent decades, the available therapeutic arsenal remains limited, and the emergence of resistance highlights the need for the development of new antifungal agents. Therefore, in this work, we explored protein degradation as a potential target for new antifungal therapies.In the cell, protein turnover is continuous and dynamic to maintain proteostasis (protein homeostasis), which is crucial for virtually all cellular processes. In eukaryotic cells, there are two main pathways for protein degradation: the lysosomal or vacuolar pathway, through endocytosis and autophagy, and the proteasomal pathway, via the proteasome, which can be ubiquitin-mediated. The proteasome is a multicatalytic complex that is highly plastic and selective, and essential for cell viability, making it an ideal target for the development of new antifungal therapies...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Farmacia, leída el 27/10/2025













