Analysis of oxidative stress-induced protein carbonylation using fluorescent hydrazides
- 作者：Jordi Tamarit ; Anouk de Hoogh ; Elia Obis ; David Alsina ; Elisa Cabiscol ; Joaquim Ros ; joaquim.ros@cmb.udl.cat
- 关键词：Protein carbonyls ; Oxidative stress ; Yeast ; Fluorescent hydrazides
- 刊名：Journal of Proteomics
- 出版年：2012
- 期刊代码：P37_18743919
- 类别：ch
- 出版时间：27 June, 2012
- 卷：75
- 期：12
- 页码：3778-3788
- 文件大小：1318 K
摘要
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 鈥渋n vitro鈥?and assessing the effect of hydrogen peroxide and chronological aging on protein oxidative damage in yeast cells.