Enzyme activity and expression of catalases in response to oxidative stress in Sporothrix schenckii
Por:
Román-Casiano K.M., Martínez-Rocha A.L., Romo-Lozano Y., López-Rodríguez A., Cervantes-García D., Sierra-Campos E., Cuéllar-Cruz M., Ruiz-Baca E.
Publicada:
1 ene 2021
Resumen:
Sporothrix schenckii is a dimorphic fungus, pathogenic to humans and animals, which is usually infective in the yeast form. Reactive oxygen species (ROS) play an important role in the host's defense, damaging the pathogen's DNA, proteins, and lipids. To prevent oxidative damage, the ROS are detoxified by pathogen-derived antioxidant enzymes such as catalases (CATs). In this work, we analyzed the activity and expression level of three S. schenckii genes, designated as CAT1, CAT2, and CAT3, that putatively encoded for three isoforms of monofunctional CAT with a predicted molecular weight of 57.6, 56.2, and 81.4 kDa, respectively. Our results demonstrate that oxidative stress induced by exogenous H2O2 leads to an altered lipid peroxidation, modifying CAT activity and the expression levels of the CAT genes, being CAT1 and CAT3 the genes with the highest expression in response to the oxidizing agent. These results show that CAT isoforms in S. schenckii can be regulated in response to oxidative stress and might help to control ROS homeostasis in the fungus-host interaction. © 2021
Filiaciones:
Román-Casiano K.M.:
Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Av. Veterinaria S/N, Durango, 34120, Mexico
Martínez-Rocha A.L.:
Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Av. Veterinaria S/N, Durango, 34120, Mexico
Romo-Lozano Y.:
Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Av. Universidad No. 940., Aguascalientes, Mexico
López-Rodríguez A.:
Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Av. Veterinaria S/N, Durango, 34120, Mexico
Cervantes-García D.:
Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Av. Universidad No. 940., Aguascalientes, Mexico
Consejo Nacional de Ciencia y Tecnología, Ciudad de México, 03940, Mexico
Sierra-Campos E.:
Facultad de Ciencias Químicas, Campus Gómez Palacio, Universidad Juárez del Estado de Durango, Av. Artículo 123 S/N, Fracc, Filadelfia, Gómez Palacio, 35010, Mexico
Cuéllar-Cruz M.:
Departamento de Biología, División de Ciencias Naturales y Exactas, Campus Guanajuato, Universidad de Guanajuato, Noria Alta S/N, Guanajuato, C.P. 36050, Mexico
Ruiz-Baca E.:
Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Av. Veterinaria S/N, Durango, 34120, Mexico
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