Kupffer Cell-Derived Tnf Triggers Cholangiocellular Tumorigenesis through JNK due to Chronic Mitochondrial Dysfunction and ROS

Cancer Cell. 2017 Jun 12;31(6):771-789.e6. doi: 10.1016/j.ccell.2017.05.006.

Abstract

Intrahepatic cholangiocarcinoma (ICC) is a highly malignant, heterogeneous cancer with poor treatment options. We found that mitochondrial dysfunction and oxidative stress trigger a niche favoring cholangiocellular overgrowth and tumorigenesis. Liver damage, reactive oxygen species (ROS) and paracrine tumor necrosis factor (Tnf) from Kupffer cells caused JNK-mediated cholangiocellular proliferation and oncogenic transformation. Anti-oxidant treatment, Kupffer cell depletion, Tnfr1 deletion, or JNK inhibition reduced cholangiocellular pre-neoplastic lesions. Liver-specific JNK1/2 deletion led to tumor reduction and enhanced survival in Akt/Notch- or p53/Kras-induced ICC models. In human ICC, high Tnf expression near ICC lesions, cholangiocellular JNK-phosphorylation, and ROS accumulation in surrounding hepatocytes are present. Thus, Kupffer cell-derived Tnf favors cholangiocellular proliferation/differentiation and carcinogenesis. Targeting the ROS/Tnf/JNK axis may provide opportunities for ICC therapy.

Keywords: JNK; Kupffer cell; Tnf; cholastasis; intrahepatic cholangiocarcinoma; mitochondrial dysfunction; pro-inflammatory niche; reactive oxygen species; unfolded protein response.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, N.I.H., Extramural

MeSH terms

  • Animals
  • Bile Duct Neoplasms / metabolism*
  • Bile Duct Neoplasms / pathology
  • Butylated Hydroxyanisole / therapeutic use
  • Carcinogenesis
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Cell Transformation, Neoplastic / drug effects
  • Cholangiocarcinoma / metabolism*
  • Cholangiocarcinoma / pathology
  • Humans
  • Kupffer Cells / drug effects
  • Kupffer Cells / metabolism*
  • Liver / drug effects
  • Liver / pathology
  • MAP Kinase Signaling System*
  • Mice
  • Mitochondria / drug effects
  • Mitochondria / metabolism
  • Mitochondria / physiology
  • Oxidative Stress / drug effects
  • Reactive Oxygen Species / metabolism
  • Receptors, Tumor Necrosis Factor / genetics
  • Receptors, Tumor Necrosis Factor / metabolism
  • Signal Transduction
  • Tumor Microenvironment
  • Tumor Necrosis Factor-alpha / metabolism*

Substances

  • Reactive Oxygen Species
  • Receptors, Tumor Necrosis Factor
  • Tumor Necrosis Factor-alpha
  • Butylated Hydroxyanisole