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| Verfasst von: | Keggenhoff, Friederike Luise [VerfasserIn]  |
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| | Castven, Darko [VerfasserIn] |
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| | Becker, Diana [VerfasserIn] |
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| | Stojkovic, Stojan [VerfasserIn] |
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| | Castven, Jovana [VerfasserIn] |
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| | Zimpel, Carolin [VerfasserIn] |
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| | Straub, Beate K. [VerfasserIn] |
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| | Gerber, Tiemo [VerfasserIn] |
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| | Langer, Harald [VerfasserIn] |
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| | Hähnel, Patricia [VerfasserIn] |
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| | Kindler, Thomas [VerfasserIn] |
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| | Fahrer, Jörg [VerfasserIn] |
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| | O'Rourke, Colm J. [VerfasserIn] |
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| | Ehmer, Ursula [VerfasserIn] |
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| | Saborowski, Anna [VerfasserIn] |
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| | Ma, Lichun [VerfasserIn] |
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| | Wang, Xin Wei [VerfasserIn] |
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| | Gaiser, Timo [VerfasserIn] |
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| | Matter, Matthias S. [VerfasserIn] |
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| | Sina, Christian [VerfasserIn] |
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| | Derer, Stefanie [VerfasserIn] |
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| | Lee, Ju-Seog [VerfasserIn] |
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| | Rössler, Stephanie [VerfasserIn] |
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| | Kaina, Bernd [VerfasserIn] |
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| | Andersen, Jesper B. [VerfasserIn] |
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| | Galle, Peter R. [VerfasserIn] |
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| | Marquardt, Jens U. [VerfasserIn] |
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| Titel: | PARP-1 selectively impairs KRAS-driven phenotypic and molecular features in intrahepatic cholangiocarcinoma |
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| Verf.angabe: | Friederike L. Keggenhoff, Darko Castven, Diana Becker, Stojan Stojkovic, Jovana Castven, Carolin Zimpel, Beate K. Straub, Tiemo Gerber, Harald Langer, Patricia Hähnel, Thomas Kindler, Jörg Fahrer, Colm J. O'Rourke, Ursula Ehmer, Anna Saborowski, Lichun Ma, Xin Wei Wang, Timo Gaiser, Matthias S. Matter, Christian Sina, Stefanie Derer, Ju-Seog Lee, Stephanie Roessler, Bernd Kaina, Jesper B. Andersen, Peter R. Galle, Jens U. Marquardt |
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| E-Jahr: | 2024 |
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| Jahr: | September 09, 2024 |
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| Umfang: | 13 S. |
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| Illustrationen: | Illustrationen |
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| Fussnoten: | Online veröffentlicht: 10. Juni, 2024 ; Gesehen am 20.11.2024 |
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| Titel Quelle: | Enthalten in: Gut |
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| Ort Quelle: | London : BMJ Publishing Group, 1960 |
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| Jahr Quelle: | 2024 |
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| Band/Heft Quelle: | 73(2024), 10, Seite 1712-1724 |
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| ISSN Quelle: | 1468-3288 |
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| Abstract: | Objective Intrahepatic cholangiocarcinoma (iCCA) is the second most common primary liver cancer with limited therapeutic options. KRAS mutations are among the most abundant genetic alterations in iCCA associated with poor clinical outcome and treatment response. Recent findings indicate that Poly(ADP-ribose)polymerase1 (PARP-1) is implicated in KRAS-driven cancers, but its exact role in cholangiocarcinogenesis remains undefined. - Design PARP-1 inhibition was performed in patient-derived and established iCCA cells using RNAi, CRISPR/Cas9 and pharmacological inhibition in KRAS-mutant, non-mutant cells. In addition, Parp-1 knockout mice were combined with iCCA induction by hydrodynamic tail vein injection to evaluate an impact on phenotypic and molecular features of Kras-driven and Kras-wildtype iCCA. Clinical implications were confirmed in authentic human iCCA. - Results PARP-1 was significantly enhanced in KRAS-mutant human iCCA. PARP-1-based interventions preferentially impaired cell viability and tumourigenicity in human KRAS-mutant cell lines. Consistently, loss of Parp-1 provoked distinct phenotype in Kras/Tp53-induced versus Akt/Nicd-induced iCCA and abolished Kras-dependent cholangiocarcinogenesis. Transcriptome analyses confirmed preferential impairment of DNA damage response pathways and replicative stress response mediated by CHK1. Consistently, inhibition of CHK1 effectively reversed PARP-1 mediated effects. Finally, Parp-1 depletion induced molecular switch of KRAS-mutant iCCA recapitulating good prognostic human iCCA patients. - Conclusion Our findings identify the novel prognostic and therapeutic role of PARP-1 in iCCA patients with activation of oncogenic KRAS signalling. |
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| DOI: | doi:10.1136/gutjnl-2023-331237 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
kostenfrei: Volltext: https://doi.org/10.1136/gutjnl-2023-331237 |
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| | kostenfrei: Volltext: https://gut.bmj.com/content/73/10/1712 |
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| | DOI: https://doi.org/10.1136/gutjnl-2023-331237 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | CARCINOGENESIS |
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| | CHOLANGIOCARCINOMA |
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| | GENE MUTATION |
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| | MOLECULAR ONCOLOGY |
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| K10plus-PPN: | 1909092843 |
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| Verknüpfungen: | → Zeitschrift |
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PARP-1 selectively impairs KRAS-driven phenotypic and molecular features in intrahepatic cholangiocarcinoma / Keggenhoff, Friederike Luise [VerfasserIn]; September 09, 2024 (Online-Ressource)
