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Master's Dissertation
DOI
https://doi.org/10.11606/D.5.2012.tde-22012013-165318
Document
Author
Full name
Thiago Antonio Fedele
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2012
Supervisor
Committee
Maria, Durvanei Augusto (President)
Capelozzi, Vera Luiza
Kubrusly, Marcia Saldanha
Title in Portuguese
Análise metabolômica de animais portadores de melanoma murino B16F10 por espectroscopia de ressonância magnética nuclear (RMN)
Keywords in Portuguese
Apoptose
Espectroscopia de ressonância magnética nuclear (RMN)
Melanoma
Metabolômica
Murinos
Proliferação de células
Abstract in Portuguese
O metaboloma é definido como a coleção qualitativa e quantitativa de todos os metabólitos de baixa massa molecular presentes nas células, os quais participam de reações bioquímicas necessárias para a manutenção, crescimento e fisiologia celular. A avaliação metabolômica permite o delineamento do processo bioquímico de sistemas a fim de ampliar o entendimento de como as patologias se manifestam. A Espectroscopia de Ressonância Magnética Nuclear (RMN) é usada para investigar uma variedade de processos biológicos em diversos sistemas. A magnética aplicada a células e biópsias de tecido intacto de melanoma murino B16F10 contribuiu para a caracterização bioquímica de biomarcadores das diferentes fases de progressão tumoral do melanoma murino B16F10. Os resultados obtidos neste estudo permitiram a identificação de 33 metabólitos possíveis, envolvidos na carga lipídica e no metabolismo secundário da via glicolítica, que favorecem o crescimento e a progressão tumoral. A presença da taurina, prolina, serina, fenilalanina, que aumentaram quantitativamente, são possíveis marcadores da invasão, progressão e metastatização. A análise quantitativa desses metabólitos mostrou diferença significativa em 11 compostos, dos quais 9 estão diretamente envolvidos na expressão das respostas proliferativas, de morte celular e angiogênese, nos diferentes períodos de crescimento do melanoma B16F10, avaliados neste estudo. Desta forma, os achados obtidos neste estudo, quando associados no futuro a outros fatores, poderão ser úteis no diagnóstico e auxiliar na escolha terapêutica alvo com maior especificidade e menores efeitos colaterais. RMN pode ter um importante impacto na monitorização de metabólitos em células e tecidos tumorais, possibilitando a detecção mais precoce de tumores malignos, em suma, através da combinação de métodos de ressonância magnética.
Title in English
Metabolomic analyzes of animals with murine melanoma B16F10 spectroscopy nuclear magnetic resonance (NMR)
Keywords in English
Apoptosis
Cell proliferation
Melanoma
Metabolomics
Murine
Nuclear magnetic resonance spectroscopy (NMR)
Abstract in English
The metabolome is defined as the qualitative and quantitative collection of all low weight molecular metabolites in cells that participate in biochemical reactions necessary for the maintenance, growth and physiology of cell. The metabolomic evaluation allows the design of systems of biochemical process in order to broaden the understanding of how diseases manifest. The Nuclear Magnetic Resonance Spectroscopy (NMR) is used for investigating a variety of biological processes in several systems. The magnetics applied to cell and tissue biopsies intact murine melanoma B16F10 contributed to the biochemical characterization of biomarkers of different stages of tumor progression of murine melanoma B16F10. The results obtained in this study allowed the identification of 33 potential metabolites involved in lipid content in the secondary metabolism of the glycolytic pathway, which promote growth and tumor progression. The presence of taurine, proline, serine, phenylalanine, which quantitatively increased, is possibly markers of invasion and metastasis progression. Quantitative analysis of these metabolites showed a significant difference in 11 compounds, of which 9 are directly involved in the expression of proliferative responses, cell death and angiogenesis in different periods of growth of B16F10 melanoma, evaluated in this study. Thus, the findings from this study, when associated in the future with other factors, may be useful in the diagnosis and may assist in choosing therapeutic target with greater specificity and fewer side effects. NMR may have a significant impact on monitoring metabolites in tumor cells and tissues, allowing for earlier detection of malignant tumors; in short, by combining MRI methods.
 
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Publishing Date
2013-01-24
 
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