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Doctoral Thesis
DOI
https://doi.org/10.11606/T.42.2014.tde-11122014-124902
Document
Author
Full name
Cecilia Cerqueira Café Mendes
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2014
Supervisor
Committee
Britto, Luiz Roberto Giorgetti de (President)
Chagas, Jair Ribeiro
Rioli, Vanessa
Tashima, Alexandre Keiji
Tersariol, Ivarne Luis dos Santos
Title in Portuguese
Peptídeos intracelulares na doença de Parkinson e na esquizofrenia.
Keywords in Portuguese
Doença de Parkinson
Espectrometria de massas
Esquizofrenia
Oligopeptidases
Peptídeos intracelulares
Abstract in Portuguese
Nosso trabalho foi dividido em um primeiro capítulo dedicado à análise do peptidoma do estriado de camundongos no modelo da 6-OHDA e também à atividade das oligopeptidases EP 24.15 e EP 24.16; e um segundo capítulo com os dados referentes a uma colaboração resultante de estágio sanduíche no Instituto Max-Planck de Psiquiatria em Munique, Alemanha, e que se refere a estudos peptidômicos em amostras post-mortem do lobo temporal anterior e do corpo caloso de pacientes esquizofrênicos. Para desenvolver os trabalhos utilizamos a técnica de marcação isotópica e label free aplicadas ao LC-MS/MS. No caso do modelo de Parkinson, os resultados indicaram alterações significativas em 5 diferentes fragmentos peptídicos e para a esquizofrenia, 2 fragmentos mostraram-se biologicamente diferentes. Ambos os trabalhos geraram grande quantidade de dados que abrem possibilidades investigativas para novos alvos de estudos em ambas as doenças.
Title in English
Intracellular peptides in Parkinson's disease and in schizophrenia.
Keywords in English
Intracellular peptides
Mass spectrometry
Oligopeptidases
Parkinson\'s disease
Schizophrenia
Abstract in English
The thesis is divided in one chapter, which was dedicated to peptidomic analysis of the striatum in the 6-OHDA mice model and also to oligopeptidase activity such as EP 24.15 and EP 24.16. The second chapter refers to data obtained during a research internship in the Max-Planck Institute of Psychiatry, Munich, Germany, in which we ran peptidomic analysis of post-mortem samples of the anterior temporal lobe and corpus callosum from schizophrenia patients. Both projects used mass spectrometry techniques such as isotopic labeling and label free applied to LC-MS/MS. In the Parkinsons disease model we observed significant changes in 5 different peptide fragments, and for schizophrenia samples, 2 peptide fragments were biologically different. The resulting data acquired in both projects lead to a substantial increase in prospective possibilities to new targets associated to the disorders studied here.
 
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Publishing Date
2014-12-16
 
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