Análise proteômica do fungo patogênico humano Fonsecaea pedrosoi submetido à temperatura do hospedeiro
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2021-09-29
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Universidade Federal de Goiás
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Chromoblastomycosis (CBM) is a chronic subcutaneous mycosis, very common in tropical and subtropical regions and affects many men related to rural activities. Lesions of this disease can appear in five clinical forms and treatments are difficult due to the recalcitrant nature of the disease. The main causative agent of CBM is the fungus Fonsecaea pedrosoi, which is a polymorphic, melanized fungus that presents a certain phenotypic plasticity in face of temperature variations. Thermotolerance is one of the virulence factors of virulence for this pathogen, since it survives the temperature increase, like that of the host. However, no work so far has searched to characterize the adapted cellular processes. Proteins are part of the strategies used in response to a variety of stressors, such as host temperature. In this work we mapped the intracellular proteomic profile of F.pedrosoi cultivated under different temperature conditions (28 and 37 °C) for 24 hours. It was possible to identify by means of Liquid Chromatography coupled to Mass Spectrometry (Nano UPLC-MSᴱ) a total of 486 differentially expressed proteins, 101 of which were up-regulated and 385 down-regulated. It was possible to observe that F. pedrosoi seems to respond to temperature stress by repressing central carbon metabolism pathways, such as glycolysis, tricarboxylic acid cycle (TCA) and glyoxylate cycle, cell wall biosynthesis and melanin and induced amino acid degradation enzymes and antioxidant proteins.
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Rosa, G. D. Análise proteômica do fungo patogênico humano Fonsecaea pedrosoi submetido à temperatura do hospedeiro. 2022. 79 f. Dissertação (Mestrado em Genética e Biologia Molecular) - Universidade Federal de Goiás, Goiânia, 2021.