Proteome profiling of primary pancreatic ductal adenocarcinomas undergoing additive chemoradiation link ALDH1A1 to early local recurrence and chemoradiation resistance

Abstract: Pancreatic ductal adenocarcinoma (PDAC) has a poor prognosis with frequent post-surgical local recurrence. The combination of adjuvant chemotherapy with radiotherapy is under consideration to achieve a prolonged progression-free survival (PFS). To date, few studies have determined the proteome profiles associated with response to adjuvant chemoradiation. We herein analyzed the proteomes of primary PDAC tumors subjected to additive chemoradiation after surgical resection and achieving short PFS (median 6 months) versus prolonged PFS (median 28 months). Proteomic analysis revealed the overexpression of Aldehyde Dehydrogenase 1 Family Member A1 (ALDH1A1) and Monoamine Oxidase A (MAOA) in the short PFS cohort, which were corroborated by immunohistochemistry. In vitro, specific inhibition of ALDH1A1 by A37 in combination with gemcitabine, radiation, and chemoradiation lowered cell viability and augmented cell death in MiaPaCa-2 and Panc 05.04 cells. ALDH1A1 silencing in both cell lines dampened cell proliferation, cell metabolism, and colony formation. In MiaPaCa-2 cells, ALDH1A1 silencing sensitized cells towards treatment with gemcitabine, radiation or chemoradiation. In Panc 05.04, increased cell death was observed upon gemcitabine treatment only. These findings are in line with previous studies that have suggested a role of ALDH1A1 chemoradiation resistance, e.g., in esophageal cancer. In summary, we present one of the first proteome studies to investigate the responsiveness of PDAC to chemoradiation and provide further evidence for a role of ALDH1A1 in therapy resistance

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch
• Notes: Translational oncology. - 11, 6 (2018) , 1307-1322, ISSN: 1936-5233

Contributors, Places and Time

• Event: Veröffentlichung
• (where): Freiburg
• (who): Universität
• (when): 2019
• Creator: Oria, Victor Oginga ; Bronsert, Peter ; Thomsen, Andreas ; Föll, Melanie Christine ; Zamboglou, Constantinos ; Hannibal, Luciana ; Behringer, Stefanie ; Biniossek, Martin Lothar ; Schreiber, Cleopatra ; Grosu, Anca-Ligia ; Bolm, Louisa ; Rades, Dirk ; Keck, Tobias ; Werner, Martin ; Wellner, Ulrich ; Schilling, Oliver

Further information

• DOI: 10.1016/j.tranon.2018.08.001
• URN: urn:nbn:de:bsz:25-freidok-1461564
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 14.08.2025, 10:59 AM CEST