MALDI imaging-based identification of prognostically relevant signals in bladder cancer using large-scale tissue microarrays
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MALDI imaging-based identification of prognostically relevant signals in bladder cancer using large-scale tissue microarrays. / Steurer, Stefan; Singer, Julius Magnus; Rink, Michael; Chun, Felix; Dahlem, Roland; Simon, Ronald; Burandt, Eike; Stahl, Phillip; Terracciano, Luigi; Schlomm, Thorsten; Wagner, Walter; Höppner, Wolfgang; Omidi, Maryam; Kraus, Olga; Kwiatkowski, Marcel; Doh, Ousman; Fisch, Margit; Soave, Armin; Sauter, Guido; Wurlitzer, Marcus; Schlüter, Hartmut; Minner, Sarah.
in: UROL ONCOL-SEMIN ORI, Jahrgang 32, Nr. 8, 01.11.2014, S. 1225-33.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - MALDI imaging-based identification of prognostically relevant signals in bladder cancer using large-scale tissue microarrays
AU - Steurer, Stefan
AU - Singer, Julius Magnus
AU - Rink, Michael
AU - Chun, Felix
AU - Dahlem, Roland
AU - Simon, Ronald
AU - Burandt, Eike
AU - Stahl, Phillip
AU - Terracciano, Luigi
AU - Schlomm, Thorsten
AU - Wagner, Walter
AU - Höppner, Wolfgang
AU - Omidi, Maryam
AU - Kraus, Olga
AU - Kwiatkowski, Marcel
AU - Doh, Ousman
AU - Fisch, Margit
AU - Soave, Armin
AU - Sauter, Guido
AU - Wurlitzer, Marcus
AU - Schlüter, Hartmut
AU - Minner, Sarah
N1 - Copyright © 2014 Elsevier Inc. All rights reserved.
PY - 2014/11/1
Y1 - 2014/11/1
N2 - OBJECTIVE: Although most patients with urinary bladder cancer present with noninvasive and low-malignant stages of the disease, about 20% eventually develop life-threatening metastatic tumors. This study was designed to evaluate the potential of matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI) to identify molecular markers predicting the clinical course of bladder cancer.MATERIALS AND METHODS: We employed MALDI-MSI to a bladder cancer tissue microarray including paraffin-embedded tissue samples from 697 patients with clinical follow-up data to search for prognostically relevant associations.RESULTS: Analysis of our MALDI imaging data revealed 40 signals in the mass spectra (m/z signals) associated with epithelial structures. The presence of numerous m/z signals was statistically related to one or several phenotypical findings including tumor aggressiveness (stage, grade, or nodal status; 30 signals), solid (5 signals) or papillary (3 signals) growth patterns, and increased (6 signals) or decreased (12 signals) cell proliferation, as determined by Ki-67 immunohistochemistry. Two signals were linked with tumor recurrence in noninvasive (pTa category) tumors, of which one was also related to progression from pTa-category to pT1-category disease. The absence of one m/z signal was linked with decreased survival in the subset of 102 muscle-invasive cancers.CONCLUSION: Our data demonstrate the suitability of combining MSI and large-scale tissue microarrays to simultaneously identify and validate clinically useful molecular markers in urinary bladder cancer.
AB - OBJECTIVE: Although most patients with urinary bladder cancer present with noninvasive and low-malignant stages of the disease, about 20% eventually develop life-threatening metastatic tumors. This study was designed to evaluate the potential of matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI) to identify molecular markers predicting the clinical course of bladder cancer.MATERIALS AND METHODS: We employed MALDI-MSI to a bladder cancer tissue microarray including paraffin-embedded tissue samples from 697 patients with clinical follow-up data to search for prognostically relevant associations.RESULTS: Analysis of our MALDI imaging data revealed 40 signals in the mass spectra (m/z signals) associated with epithelial structures. The presence of numerous m/z signals was statistically related to one or several phenotypical findings including tumor aggressiveness (stage, grade, or nodal status; 30 signals), solid (5 signals) or papillary (3 signals) growth patterns, and increased (6 signals) or decreased (12 signals) cell proliferation, as determined by Ki-67 immunohistochemistry. Two signals were linked with tumor recurrence in noninvasive (pTa category) tumors, of which one was also related to progression from pTa-category to pT1-category disease. The absence of one m/z signal was linked with decreased survival in the subset of 102 muscle-invasive cancers.CONCLUSION: Our data demonstrate the suitability of combining MSI and large-scale tissue microarrays to simultaneously identify and validate clinically useful molecular markers in urinary bladder cancer.
U2 - 10.1016/j.urolonc.2014.06.007
DO - 10.1016/j.urolonc.2014.06.007
M3 - SCORING: Journal article
C2 - 25131659
VL - 32
SP - 1225
EP - 1233
JO - UROL ONCOL-SEMIN ORI
JF - UROL ONCOL-SEMIN ORI
SN - 1078-1439
IS - 8
ER -