title: A proteomics approach to characterizing human submandibular gland cell lines by fluorescent two-dimensional differential in-gel electrophoresis.
abstract: The human salivary glands have a variety of histologic features such as intercalated duct cells, myoepithelial cells and acinar cells. A neoplastic human salivary intercalated duct cell line (HSG) and its derivatives, HSG with a myoepithelial cell phenotype (HSG-AZA1) and HSG with an acinar cell phenotype (HSG-AZA3) induced by 5-aza-2'-dC treatment of HSG cells, have been reported. To identify characterization of intercalated duct cells, myoepithelial cells and acinar cells in the salivary gland, we selected HSG, HSG-AZA1 and HSG-AZA3 cell lines to perform two-dimensional electrophoresis analysis. We used a fluorescent two-dimensional differential in-gel electrophoresis (2-D-DIGE) for comparative proteomics, which improved the reproducibility and reliability of differential protein expression analysis between the samples. Furthermore, matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) peptide mass fingerprinting (PMF) was used to identify the proteins. These methods were combined to approach the protein profiles associated with characterization between HSG, HSG-AZA1 and HSG-AZA3 cells. Using these strategies, we identified seven HSG associated proteins, such as actin-beta, hydrocephalus inducing protein, L-plastin, KIAA0657 protein, septin 6 isoform A, lamin A/C isoform 2 and superoxide dismutase 2, three HSG-AZA1 associated proteins such as ubiquitin carboxyl-terminal esterase L1, myosin light chain 2 and muscle creatine kinase, and two HSG-AZA3 associated proteins, microtubule-associated protein 6 and Annexin A3. These results suggest that the proteins are associated with characterization of the salivary gland.
authors.affiliation: Department of Clinical Molecular Biology, Graduate School of Medicine, Chiba University, Chiba, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Kasamatsu
authors.forename: Katsuhiro
authors.initials: K
authors.lastname: Uzawa
authors.forename: Dai
authors.initials: D
authors.lastname: Nakashima
authors.forename: Yukinao
authors.initials: Y
authors.lastname: Kouzu
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Endo
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Koike
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Yokoe
authors.forename: Koji
authors.initials: K
authors.lastname: Harada
authors.forename: Mitsunobu
authors.initials: M
authors.lastname: Sato
authors.forename: Hideki
authors.initials: H
authors.lastname: Tanzawa
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D002460:Cell Line; D015536:Down-Regulation; D015180:Electrophoresis, Gel, Two-Dimensional / Q000379:methods*; D005456:Fluorescent Dyes; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation; D006801:Humans; D021621:Imaging, Three-Dimensional; D007150:Immunohistochemistry; D051379:Mice; D008819:Mice, Nude; D008969:Molecular Sequence Data; D010446:Peptide Fragments / Q000737:chemistry; D040901:Proteomics; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D013363:Submandibular Gland / Q000737:chemistry / Q000166:cytology* / Q000378:metabolism*; D015854:Up-Regulation
chemical_list: D005456:Fluorescent Dyes; D010446:Peptide Fragments