Kubra Karaosmanoglu Yoneten1, Murat Kasap2, Gurler Akpinar3, Abdullah Gunes4, Bora Gurel5, Nihat Zafer Utkan6. 1. Department of Biomedical Engineering, Kocaeli University Technology Faculty, Kocaeli, Turkey. 2. Department of Medical Biology, Kocaeli University Medical School, Kocaeli, Turkey mkasap@kocaeli.edu.tr. 3. Department of Medical Biology, Kocaeli University Medical School, Kocaeli, Turkey. 4. Department of General Surgery, Derince Education and Application Hospital, Kocaeli, Turkey. 5. Department of Pathology, Kocaeli University Medical School, Kocaeli, Turkey. 6. Department of General Surgery, Kocaeli University Medical School, Kocaeli, Turkey.
Abstract
BACKGROUND/AIM: Breast cancer (BC) incidence and mortality rates have been increasing due to the lack of appropriate diagnostic tools for early detection. Proteomics-based studies may provide novel targets for early diagnosis and efficient treatment. The aim of this study was to investigate the global changes occurring in protein profiles in breast cancer tissues to discover potential diagnostic or prognostic biomarkers. MATERIALS AND METHODS: BC tissues and their corresponding healthy counterparts were collected, subtyped, and subjected to comparative proteomics analyses using two-dimensional gel electrophoresis (2-DE) and two-dimensional electrophoresis fluorescence difference gel (DIGE) coupled to matrix-assisted laser desorption/ionisation-time of flight mass spectrometry (MALDI-TOF/TOF) to explore BC metabolism at the proteome level. Western blot analysis was used to verify changes occurring at the protein levels. RESULTS: Bioinformatics analyses performed with differentially regulated proteins highlighted the changes occurring in triacylglyceride (TAG) metabolism, and directed our attention to TAG metabolism-associated proteins, namely glycerol-3-phosphate dehydrogenase 1 (GPD1) and monoacylglycerol lipase (MAGL). These proteins were down-regulated in tumor groups in comparison to controls. CONCLUSION: GPD1 and MAGL might be promising tissue-based protein biomarkers with a predictive potential for BC. Copyright
BACKGROUND/AIM: Breast cancer (BC) incidence and mortality rates have been increasing due to the lack of appropriate diagnostic tools for early detection. Proteomics-based studies may provide novel targets for early diagnosis and efficient treatment. The aim of this study was to investigate the global changes occurring in protein profiles in breast cancer tissues to discover potential diagnostic or prognostic biomarkers. MATERIALS AND METHODS: BC tissues and their corresponding healthy counterparts were collected, subtyped, and subjected to comparative proteomics analyses using two-dimensional gel electrophoresis (2-DE) and two-dimensional electrophoresis fluorescence difference gel (DIGE) coupled to matrix-assisted laser desorption/ionisation-time of flight mass spectrometry (MALDI-TOF/TOF) to explore BC metabolism at the proteome level. Western blot analysis was used to verify changes occurring at the protein levels. RESULTS: Bioinformatics analyses performed with differentially regulated proteins highlighted the changes occurring in triacylglyceride (TAG) metabolism, and directed our attention to TAG metabolism-associated proteins, namely glycerol-3-phosphate dehydrogenase 1 (GPD1) and monoacylglycerol lipase (MAGL). These proteins were down-regulated in tumor groups in comparison to controls. CONCLUSION:GPD1 and MAGL might be promising tissue-based protein biomarkers with a predictive potential for BC. Copyright
Authors: Lin Ye; Bo Zhang; Elena G Seviour; Kai-Xiong Tao; Xing-Hua Liu; Yan Ling; Jian-Ying Chen; Guo-Bin Wang Journal: Cancer Lett Date: 2011-05-04 Impact factor: 8.679
Authors: Heather R Christofk; Matthew G Vander Heiden; Marian H Harris; Arvind Ramanathan; Robert E Gerszten; Ru Wei; Mark D Fleming; Stuart L Schreiber; Lewis C Cantley Journal: Nature Date: 2008-03-13 Impact factor: 49.962