title: A Promising Serum Autoantibody Marker, Anti-Heat Shock Protein 90α, for Cholangiocarcinoma.
abstract: The present study was designed to investigate cholangiocarcinoma (CCA) antibodies in hamster serum. Hamster CCA cell lines were processed using sodium dodecyl sulfate-polyacrylamide gel electrophoresis and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. A candidate biomarker was confirmed by immunoprecipitation and western blot, and was further analyzed using ELISA and sera from normal control hamsters, hamsters with opisthorchiasis and hamsters with various stages of CCA, as well as from CCA patients and healthy individuals. One candidate marker was identified as HSP90α, as indicated by a high level of anti-HSP90α in hamster CCA sera. It was found that the levels of anti-HSP90α were specifically elevated in the sera of hamsters with CCA compared with other groups and progressively increased with the clinical stage. At the cut-off point of 0.4850 on the receiver operating characteristic curve, anti-HSP90α could discriminate CCA from healthy control groups with a sensitivity of 76.2%, specificity of 71.4% and total accuracy 75.5%. In the present study, we have shown that anti-HSP90α may be a potential useful serum biomarker to discriminate CCA cases from healthy persons.
authors: Department of Community, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand E-mail : bthida@kku.ac.th; boonmars@yahoo.com.
authors: Sirintip
authors: S
authors: Boonjaraspinyo
authors: Amornrat
authors: A
authors: Juasook
authors: Thidarut
authors: T
authors: Boonmars
authors: Ratchadawan
authors: R
authors: Aukkanimart
authors: Atit
authors: A
authors: Silsirivanit
authors: Watcharin
authors: W
authors: Loilome
authors: Pranee
authors: P
authors: Sriraj
authors: Zhiliang
authors: Z
authors: Wu
authors: Panaratana
authors: P
authors: Ratanasuwan
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001323:Autoantibodies / Q000097:blood*; D001650:Bile Duct Neoplasms / Q000097:blood* / Q000175:diagnosis / Q000276:immunology; D001653:Bile Ducts, Intrahepatic / Q000276:immunology / Q000473:pathology*; D014408:Biomarkers, Tumor / Q000097:blood*; D015153:Blotting, Western; D016022:Case-Control Studies; D018281:Cholangiocarcinoma / Q000097:blood* / Q000175:diagnosis / Q000276:immunology; D006224:Cricetinae; D004797:Enzyme-Linked Immunosorbent Assay; D018841:HSP90 Heat-Shock Proteins / Q000276:immunology*; D006801:Humans; D047468:Immunoprecipitation; D008969:Molecular Sequence Data; D009889:Opisthorchiasis / Q000097:blood* / Q000175:diagnosis / Q000276:immunology / Q000469:parasitology; D009891:Opisthorchis / Q000472:pathogenicity; D012372:ROC Curve
chemical_list: D001323:Autoantibodies; D014408:Biomarkers, Tumor; D018841:HSP90 Heat-Shock Proteins