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Proteome-based Identification of Proteins Regulated by Aldosterone in Rat Kidney Cortex  

Song, Mi-Na (Department of Molecular Medicine, Department of Biochemistry, School of Medicine, Kyungpook National University)
Jeon, Hong-Bae (Department of Molecular Medicine, Department of Biochemistry, School of Medicine, Kyungpook National University)
Choi, Hyo-Jung (Department of Molecular Medicine, Department of Biochemistry, School of Medicine, Kyungpook National University)
Kwon, Tae-Hwan (Department of Molecular Medicine, Department of Biochemistry, School of Medicine, Kyungpook National University)
Baek, Moon-Chang (Department of Molecular Medicine, Department of Biochemistry, School of Medicine, Kyungpook National University)
Publication Information
YAKHAK HOEJI / v.54, no.3, 2010 , pp. 180-186 More about this Journal
Abstract
Aldosterone, mineralocorticoid hormone, has important functions related to the regulation of blood pressure and balance of fluids and electrolytes in the distal region of the nephron. By genomic and non-genomic action of aldosterone, the physiological kidney functions are modulated. However, many of them except several kind of sodium channel have not been identified and analyzed yet. In this study, proteomic technologies with two-dimensional gel electrophoresis (2-DE) gel using aldosterone rat model were applied to analyze and identify the aldosterone dependently expressed proteins in rat kidney cortex. As a result, the established aldosterone rat model exhibited the normal physiological responses to aldosterone and modulated proteins were identified, which included 15 increased and 3 decreased proteins on 2-DE analysis. Among them, 11 proteins were identified as changed proteins by LC-MS/MS analysis. These proteins identified as aldosterone induced proteins were involved in several cellular pathways such as cytoskeleton remodeling, energy metabolism, amino acid metabolism, and chaperone process. In conclusion, our data could provide the insights into the new mechanism underlying regulation of kidney functions by aldosterone.
Keywords
aldosterone; 2-DE; LC-MS/MS; kidney;
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