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.
Original language | English |
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Pages (from-to) | 771-789.e6 |
Journal | Cancer Cell |
Volume | 31 |
Issue number | 6 |
DOIs | |
State | Published - 12 Jun 2017 |
Bibliographical note
Publisher Copyright:© 2017 Elsevier Inc.
Keywords
- JNK
- Kupffer cell
- Tnf
- cholastasis
- intrahepatic cholangiocarcinoma
- mitochondrial dysfunction
- pro-inflammatory niche
- reactive oxygen species
- unfolded protein response