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Targeted proteomics of subcellular translocation during breast cancer development

Grant number: 15/08693-0
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): September 01, 2015
Effective date (End): July 31, 2018
Field of knowledge:Biological Sciences - Biochemistry - Chemistry of Macromolecules
Principal Investigator:Vitor Marcel Faça
Grantee:Camila de Souza Palma
Host Institution: Faculdade de Medicina de Ribeirão Preto (FMRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil
Associated research grant:11/09740-1 - Identification and validation of metastasis-related molecular signatures -In-Depth and targeted proteomic analysis of epithelial-mesenchymal transition in adenocarcinomas, AP.JP


Subcellular localization of proteins and their trafficking between sub-compartments represent fundamental factors for their correct function. The aberrant localization of proteins contributes to the pathogenesis of several human diseases, including cancer. The association of cell fractionation methods and mass spectrometry based proteomic methods allow both the location and quantification of proteins in different sub-compartments as well as temporal dynamics measures and changes in their location in different cellular conditions. The correction of the location of disease-related proteins is, therefore, of great interest for therapeutic intervention and analysis of changes in protein localization in response to different stimuli is an important tool for the identification of cancer biomarkers, including breast cancer. Breast cancer is the most common type of cancer among women worldwide. Over one million new cases and 500 thousand deaths per year makes breast cancer the leading cause of death in women aged 40-59 years, and its metastasis is responsible for most deaths. Therefore, the most effective methods to decrease cancer morbidity and mortality consist in early detection, prevention and treatment of metastasis. A major challenge in the treatment of breast cancer is to identify reliable biomarkers to improve early diagnosis, screening, outcome prediction, therapeutic response, toxicity and identification of new therapeutic targets. In this context, we aim to assess changes in the subcellular localization of proteins in breast adenocarcinoma cell lines induced to epithelial-mesenchymal transition, a process that occurs naturally during embryogenesis and tissue repair, and is also involved in the progression and metastasis of cancer, serving as an in vitro model for the identification of proteins involved in cancer progression. For that, we will apply proteomics methods that combine subcellular fractionation and targeted mass spectrometry for a quantitative analysis of proteins involved in transport processes and translocation between sub-compartments. With this detailed analysis we intend to better understand the role of subcellular localization alteration in the regulation of biological process related to breast cancer and identify proteins that are important to breast cancer progression and metastasis and that can possibly serve as targets for metastasis inhibition and/or disease diagnostics.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PALMA, CAMILA S.; GRASSI, MARIANA L.; THOME, CAROLINA H.; POERSCH, ALINE; LANFREDI, GUILHERME P.; FACA, VITOR M.. Proteomic analysis of epithelial-to-mesenchymal transition induced by EGF in breast cancer cells. MOLECULAR CANCER THERAPEUTICS, v. 17, n. 1, p. 2-pg., . (15/08693-0, 16/03809-3, 13/08135-2)
DE CARVALHO, VINICIUS PEREIRA; GRASSI, MARIANA LOPES; PALMA, CAMILA DE SOUZA; ANGOTTI CARRARA, HELIO HUMBERTO; FACA, VITOR MARCEL; CANDIDO DOS REIS, FRANCISCO JOSE; POERSCH, ALINE. The contribution and perspectives of proteomics to uncover ovarian cancer tumor markers. TRANSLATIONAL RESEARCH, v. 206, p. 71-90, . (13/08755-0, 15/08693-0)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
PALMA, Camila de Souza. Proteomic alterations in different models of epithelial-mesenchymal transition (EMT) induction in breast adenocarcinoma cells. 2018. Doctoral Thesis - Universidade de São Paulo (USP). Faculdade de Medicina de Ribeirão Preto (PCARP/BC) Ribeirão Preto.

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