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Cancer cell bioenergetics and pH regulation influence breast cancer cell resist...

The multidrug resistance (MDR) phenotype, frequently observed during cancer treatment, is often associated with drug efflux pump activity. However, many other factors are also known to be involved. Cancer cells often rely on aerobic glycolysis for energy production; this is known as the "Warburg effect" and is used as a survival mechanism. Associated to this event, a reverse pH gradient across the cell membrane...

3-bromopyruvate, butyrate, monocarboxylate transporters, warburg effect

The authors are deeply grateful to Professor André Goffeau (Université Catholique de Louvain-la-Neuve, Belgium) for his contagious vision, valuable discussions at the Conference on 3-BP held in Brussels, 29 October–2 November, 2011 and critical reviewing of the manuscript. The authors also thank Dr. Rita Reis for her technical support in microscopy and image analysis. ; Most malignant tumors exhibit theWarburg...

Functional characterization of a yarrowia lipolytica gene family coding for car...

Carboxylic acids are widely used in pharmaceutical and food industries and new industrial uses are continually emerging. The first step of carboxylic acids metabolism is their entrance to the cell and understanding in detail this process has significant biotechnological relevance. The first carboxylic acids permease found in Saccharomyces cerevisiae was a lactate/H+ symporter coded by JEN1 gene. In Kluyveromyce...

Malic acid degradation by indigenous and commercial Saccharomyces cerevisiae wi...

Malic acid contributes to the acidic taste of wine and is, together with tartaric acid, the most abundant organic acid in wine. Contaminating lactic acid bacteria cause wine spoilage after bottling and may use malic acid as a substrate. It is therefore essential to remove excess malic acid from wines to ensure their physical, biochemical and microbial stability. The aim of this work was to gain insight in the ...

Acquisition of flocculation phenotype by Kluyveromyces marxianus when overexpre...

The use of flocculating yeast strains has been considered as a convenient approach to obtain high cell densities in bioreactors with increasing productivity in continuous operations. In Kluyveromyces marxianus ATTC 10022, the GAP1 gene encodes an isoform of glyceraldehyde-3-phosphate dehydrogenase–p37—that is accumulated in the cell wall and is involved in flocculation. To test the use of p37 as a tool for engi...

Molecular and physiological characterization of mono- and dicarboxylic acids pe...

Poster apresentado em XXI International Conference on Yeast Genetics and Molecular Biology, Gotemburgo, Suécia, 7 Jul. - 12 Jul. 2003

Remoção zimológica da acidez volátil e fixa de mostos e vinhos : da fisiologia ...