title: Analysis of oxidative stress-induced protein carbonylation using fluorescent hydrazides.
abstract: Protein carbonyl detection has been commonly used to analyze the degree of damage to proteins under oxidative stress conditions. Most laboratories rely on derivatization of carbonyl groups with dinitrophenylhydrazine followed by Western blot analysis using antibodies against the dinitrophenyl moiety. This paper describes a protein carbonyl detection method based on fluorescent Bodipy, Cy3 and Cy5 hydrazides. Using this approach, Western blot and immunodetection are no longer needed, shortening the procedure and increasing accuracy. Combination of Cy3 and Cy5 hydrazides allows multiplexing analyses in a single two-dimensional gel. Derivatization with Bodipy hydrazide allows easy matching of the spots of interest and those obtained by general fluorescent protein staining methods, which facilitates excising target proteins from the gels and identifying them. This method is effective for detecting protein carbonylation in samples of proteins submitted to metal-catalyzed oxidation "in vitro" and assessing the effect of hydrogen peroxide and chronological aging on protein oxidative damage in yeast cells.
authors.affiliation: Departament de Ciències Mèdiques Bàsiques, IRB Lleida, University of Lleida, Lleida, Spain.
authors.forename: Jordi
authors.initials: J
authors.lastname: Tamarit
authors.forename: Anouk
authors.initials: A
authors.lastname: de Hoogh
authors.forename: Elia
authors.initials: E
authors.lastname: Obis
authors.forename: David
authors.initials: D
authors.lastname: Alsina
authors.forename: Elisa
authors.initials: E
authors.lastname: Cabiscol
authors.forename: Joaquim
authors.initials: J
authors.lastname: Ros
mesh_terms: D005456:Fluorescent Dyes / Q000737:chemistry*; D006834:Hydrazines / Q000737:chemistry*; D018384:Oxidative Stress / Q000502:physiology*; D050050:Protein Carbonylation / Q000502:physiology*; D012441:Saccharomyces cerevisiae / Q000378:metabolism*; D029701:Saccharomyces cerevisiae Proteins / Q000378:metabolism*; D013050:Spectrometry, Fluorescence / Q000379:methods; D057825:Two-Dimensional Difference Gel Electrophoresis / Q000379:methods*
chemical_list: D005456:Fluorescent Dyes; D006834:Hydrazines; D029701:Saccharomyces cerevisiae Proteins; C029424:hydrazine