Caracterização imunofenotípica e potencial de diferenciação de células-tronco mesenquimais provenientes de medula óssea, tecido adiposo e cordão umbilical de equinos

• Ano de defesa: 2013
• Autor(a) principal: Barberini, Danielle Jaqueta [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Tecido adiposo; Cordão umbilical; Equino; Medula ossea; Células-Tronco; Stem cells
• Link de acesso: http://hdl.handle.net/11449/108620

Studies with mesenchymal stem cells (MSCs) are increasing due to their immunomodulatory and anti-inflammatory properties, and tissue regeneration. However, there is still no agreement about the best source of equine MSCs. The aim of this study was to evaluate cell culture, immunophenotypic characterization and potential of differentiation of equine MSCs from bone marrow (BM-MSC), adipose tissue (AT-MSC) and umbilical cord (UC-MSC), in order to define which is the best source for a cell bank aiming allogeneic therapy. The BM-MSC, AT-MSC and UC-MSC were cultured in vitro and assessed for CD105, CD44, CD34, CD90 and MHC-II markers by flow cytometry, and MHC-II also by immunocytochemistry. Additionally, MSCs were evaluated in vitro for osteogenic, adipogenic and chondrogenic potential. The harvest procedure and cell culture of BM-MSC, AT-MSC and UC-MSC were feasible and the MSCs were able to differentiate into osteogenic, adipogenic and chondrogenic lineages. MSCs showed high expression for CD105, CD44 and CD90 and low or negative expression for CD34 and MHC-II. The MHC-II was not expressed by immunocytochemistry technique in any of the MSCs studied. The BM, AT and UC are feasible sources for harvesting equine MSCs, and their immunophenotypic and multipotentiality characteristics were confirmed. However, BM-MSC and AT-MSC showed better in vitro immunophenotypic characterization when compared to UC-MSC