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Master's Dissertation
DOI
https://doi.org/10.11606/D.42.2017.tde-16112017-103200
Document
Author
Full name
Carolina Manganeli Polonio
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Committee
Peron, Jean Pierre Schatzmann (President)
Almeida, Danilo Cândido de
Munhoz, Carolina Demarchi
Perin, Paulo Marcelo
Title in Portuguese
Avaliação da capacidade reguladora de células tronco mesenquimais endometriais no modelo de encefalomielite experimental automimune.
Keywords in Portuguese
Células Tronco Mesenquimais Endometriais
Encefalomielite Experimental Autoimune
Imunomodulação
Abstract in Portuguese
A esclerose múltipla é uma doença inflamatória crônica desencadeada por células T autorreativas contra antígenos proteicos da mielina. A encefalomielite experimental autoimune é o modelo murino mais utilizado para o estudo da EM. As tubas uterinas e o útero de camundongos fêmeas são órgãos ricos em células mesenquimais que são pouco utilizadas em estudos. Dessa forma, no presente projeto, caracterizamos a obtenção dessa população e avaliamos sua capacidade imunossupressora utilizando o modelo de EAE. Observamos que o tratamento é capaz de modular o perfil de linfócitos T CD4+ durante sua ativação nos linfonodos, induzindo o direcionamento para a subpopulação Tr1 e atenuando as Th1 e Th17. Assim, houve uma diminuição do número de células infiltrantes no SNC associado a uma menor ativação de células da microglia. Em conjunto, demostraramos que as meMSC utilizadas como tratamento são capazes de atrasar o desenvolvimento da EAE e, portanto, evidenciando o caráter imunomodulador das MSCs derivadas do endométrio, chamando a atenção para seu potencial terapêutico.
Title in English
Evaluation of the regulatory capacity of endometrial mesenchymal stem cells in the experimental autoimmune encephalomyelitis model.
Keywords in English
Endometrium Mesenchymal Stem Cells
Experimental Autoimmune Encephalomyelitis
Immunomodulation
Abstract in English
Multiple sclerosis is a chronic inflammatory disease triggered by autoreactive T cells against myelin protein. Experimental Autoimmune Encephalomyelitis is the most commonly used murine model for the study of MS. The uterine tubes and uterus of female mice are organs rich in mesenchymal cells which are rarely used. Thus, in the present work, we characterized the extraction of this population and evaluated its immunosuppressive capacity using the EAE model. We observed that the meMSC treatment is capable of modulating the CD4 T lymphocyte profile during its activation in the lymph nodes, inducing the expansion of the Tr1 subpopulation and attenuating Th1 and Th17. Consequently, there was a decrease in the number of infiltrating cells in the CNS associated with a reduction of microglial activation. Taken together, our results demonstrated that the meMSCs used as treatment are capable of delaying the development of EAE, therefore, evidencing its immunomodulatory features drawing attention to its therapeutic potential.
 
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Publishing Date
2017-11-16
 
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