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    Análise do perfil genético de células tronco tumorais no câncer de mama localmente avançado

    Beneficiário:

    Instituição-sede da pesquisa: Faculdade de Medicina de Ribeirão Preto (FMRP). Universidade de São Paulo (USP). Ribeirão Preto, SP, Brasil
    Pesquisador responsável:

    Daniel Guimarães Tiezzi

    Supervisor no exterior: Charles Theillet
    Local de pesquisa: Institut de Recherche en Cancérologie de Montpellier (IRCM), França
    Área do conhecimento:Ciências da Saúde - Medicina
    Linha de fomento:Bolsas no Exterior - Estágio de Pesquisa - Doutorado
    Processo: 13/24757-3
    Vigência: 01 de abril de 2014 - 31 de março de 2015
    Vinculado à bolsa:11/19758-5 - Análise do perfil genético de células tronco tumorais no câncer de mama localmente avançado, BP.DR
    Assunto(s):

    Neoplasias mamárias

    Oncologia

    Resumo
    The breast cancer is the most common cancer in women worldwide and the metastatic dissemination is the principal factor related to death by this disease. Breast tumors are highly heterogeneous and are classified based (1) histology, (2) the expression of ER and PR and HER2 and (3) differentiation state/gene expression profiles into subtypes.The model concerning expression profiles refined by the group of Dr. Charles Theillet in 2012, depicting six subtypes with different degrees of aggressiveness and differentiation. Once the hierarchical model was accepted to explain cancer behavior, the its primordial cells was designed as cancer stem cells (CSC). Is possible that this cells are involved in the heterogeneity, in the different differentiation degree of cells in the tumor and in resistance to neoadjuvant chemotherapy. The aim of this project is unravel both the expression profile differences between breast cancer stem cells from tumors of patients responsive and unresponsive to neoadjuvant chemotherapy and the difference between the cancer stem cell subpopulation and the bulk of the tumor. For that, we will analyze the expression profile of breast cancer cell line models, patient derived xenografts and tumor samples from patients diagnosed with locally advanced breast cancer collect previously to the beginning of the treatment. The current proposal is linked to the project "Genetic profile analysis of tumor stem cells in locally advanced breast cancer", FAPESP grant number 11/19758-5. (AU)
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