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Exploração racional da rede metabólica de Xylaria sp. visando à produção de metabólitos de interesse farmacológico através de ferramentas quimiométricas e técnicas de desreplicação / Rational exploitation of the network of metabolic Xylaria sp. aimed at interest metabolites production pharmacologic through chemometric tools and techniques dereplicationVieira, Rafael [UNESP] 16 December 2015 (has links)
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Previous issue date: 2015-12-16 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Este trabalho de mestrado tem, como foco principal, analisar o comportamento do fungo Xylaria sp. perante variações físico-químicas, através da abordagem OSMAC (One Strain, Many Compounds). Para realizar tais induções e explorar a variabilidade da rede metabólica deste micro-organismo, um planejamento fatorial foi desenhado visando induzir a variabilidade (ou a potencialização) de metabólitos. Diante de respaldos quimiométricos, induções planejadas foram impostas ao micro-organismo e observou-se variações no perfil químico nos extratos brutos. Somado a isso, técnicas de desreplicação foram usadas a fim de estudar quimicamente as matrizes complexas produzidas por este fungo visando a produção de metabólitos de alto valor agregado e determinou-se condições específicas para produção de moléculas de citocalasina D e de griseofulvina. / This work has as its main focus, analyze the behavior of the fungus Xylaria sp. before physicochemical variations via the OSMAC approach (One Strain, Compounds Many). To achieve such induction and exploit the variability of the metabolic network of this micro-organism, a factorial design was designed to induce variability (or potentiating) metabolites. Before chemometric backrests, planned inductions were imposed on the micro-organism and it was observed variations in the chemical profile in crude extracts. Added to this, dereplication techniques were used to study the chemically complex matrices produced by this fungus aimed at producing high added value and metabolites was determined specific conditions for the production of molecules cytochalasin D and griseofulvin.
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To Be or Not To Be a Protrusion: Unraveling the Determinants of Protrusion FormationVarghese, Mita 04 April 2012 (has links)
No description available.
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