title: A new rapid and comprehensive peptidome analysis by one-step direct transfer technology for 1-D electrophoresis/MALDI mass spectrometry.
abstract: We have developed a new target plate for matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-MS). This target plate enables direct electric transfer of analytes from the 1-dimensional gel electrophoresis (1-DE) gel to the target plate in one step. Incorporated with a one-step direct transfer technique, this novel 1-DE/MALDI-MS (1-DE/MS) system eliminates staining, extracting, loading, and many other time-consuming intermediate processes, thereby greatly reducing analysis time while providing high throughput proteome analysis. Furthermore, in peptidome analysis, during the 1-DE step this system separates or removes the high molecular weight plasma proteins in blood and the various low molecular weight substances in tissue extracts, which interfere with mass spectrometry. This system can therefore be used for peptide profiling of any biological sample without special pretreatment. In view of these advantages, the 1-DE/MS system will greatly improve the usefulness of current peptidomic modalities in the discovery and validation of biomarker molecules in various body fluids and tissue extracts, permitting early detection, diagnosis, and treatment of diseases.
authors.affiliation: Membrane Protein & Ligand Analysis Center, Protosera Inc, Minatojima-minami-cho, Kobe, Japan. ktanaka@protosera.co.jp
authors.forename: Kenji
authors.initials: K
authors.lastname: Tanaka
authors.forename: Nao
authors.initials: N
authors.lastname: Tsugawa
authors.forename: Young-Ok
authors.initials: YO
authors.lastname: Kim
authors.forename: Nobuya
authors.initials: N
authors.lastname: Sanuki
authors.forename: Ushio
authors.initials: U
authors.lastname: Takeda
authors.forename: Lyang-Ja
authors.initials: LJ
authors.lastname: Lee
mesh_terms: D015415:Biomarkers / Q000032:analysis* / Q000097:blood; D004586:Electrophoresis; D006801:Humans; D010455:Peptides / Q000032:analysis*; D040081:Protein Array Analysis / Q000379:methods*; D020543:Proteome / Q000032:analysis*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D044967:Serum / Q000737:chemistry; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000379:methods*
chemical_list: D015415:Biomarkers; D010455:Peptides; D020543:Proteome