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Conde, Vanessa R.; Oliveira, Pedro F.; Nunes, Ana R.; Rocha, Cátia S.; Ramalhosa, Elsa; Pereira, José A.; Alves, Marco G.; Silva, Branca M.
Experimental cell research, 07/2015, Letnik: 335, Številka: 1Journal Article
Cancer cells present a particular metabolic behavior. We hypothesized that the progression of bladder cancer could be accompanied by changes in cells glycolytic profile. We studied two human bladder cancer cells, RT4 and TCCSUP, in which the latter represents a more invasive stage. The levels of glucose, pyruvate, alanine and lactate in the extracellular media were measured by Proton Nuclear Magnetic Resonance. The protein expression levels of glucose transporters 1 (GLUT1) and 3 (GLUT3), monocarboxylate transporter 4 (MCT4), phosphofructokinase-1 (PFK1), glutamic-pyruvate transaminase (GPT) and lactate dehydrogenase (LDH) were determined. Our data showed that glucose consumption and GLUT3 levels were similar in both cell lines, but TCCSUP cells displayed lower levels of GLUT1 and PFK expression. An increase in pyruvate consumption, concordant with the higher levels of lactate and alanine production, was also detected in TCCSUP cells. Moreover, TCCSUP cells presented lower protein expression levels of GPT and LDH. These results illustrate that bladder cancer progression is associated with alterations in cells glycolytic profile, namely the switch from glucose to pyruvate consumption in the more aggressive stage. This may be useful to develop new therapies and to identify biomarkers for cancer progression. •Metabolic phenotype of less and high invasive bladder cancer cells was studied.•Bladder cancer progression involves alterations in cells glycolytic profile.•More invasive bladder cancer cells switch from glucose to pyruvate consumption.•Our results may help to identify metabolic biomarkers of bladder cancer progression.
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