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Selective Requirement of PI3K/PDK1 Signaling for Kras Oncogene-Driven Pancreatic Cell Plasticity and Cancer

  • Stefan Eser
  • , Nina Reiff
  • , Marlena Messer
  • , Barbara Seidler
  • , Kathleen Gottschalk
  • , Melanie Dobler
  • , Maren Hieber
  • , Andreas Arbeiter
  • , Sabine Klein
  • , Bo Kong
  • , Christoph W. Michalski
  • , Anna Melissa Schlitter
  • , Irene Esposito
  • , Alexander J. Kind
  • , Lena Rad
  • , Angelika E. Schnieke
  • , Manuela Baccarini
  • , Dario R. Alessi
  • , Roland Rad
  • , Roland M. Schmid
  • Guenter Schneider, Dieter Saur

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Oncogenic Kras activates a plethora of signaling pathways, but our understanding of critical Ras effectors is still very limited. We show that cell-autonomous phosphoinositide 3-kinase (PI3K) and 3-phosphoinositide-dependent protein kinase 1 (PDK1), but not Craf, are key effectors of oncogenic Kras in the pancreas, mediating cell plasticity, acinar-to-ductal metaplasia (ADM), and pancreatic ductal adenocarcinoma (PDAC) formation. This contrasts with Kras-driven non-small cell lung cancer, where signaling via Craf, but not PDK1, is an essential tumor-initiating event. These in vivo genetic studies together with pharmacologic treatment studies in models of human ADM and PDAC demonstrate tissue-specific differences of oncogenic Kras signaling and define PI3K/PDK1 as a suitable target for therapeutic intervention specifically in PDAC.

    Original languageEnglish
    Pages (from-to)406-420
    Number of pages15
    JournalCancer Cell
    Volume23
    Issue number3
    DOIs
    Publication statusPublished - 2013

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 3 - Good Health and Well-being
      SDG 3 Good Health and Well-being

    Keywords

    • RAS ONCOGENE
    • TUMOR-SUPPRESSOR
    • MICE
    • DUCTAL ADENOCARCINOMA
    • PI3K
    • C-RAF
    • IN-VIVO
    • EGF RECEPTOR
    • TUMORIGENESIS
    • MOUSE MODEL

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