Schneider-Jakob, S; Corazza, N; Badmann, A; Sidler, D; Stuber-Roos, R; Keogh, A; Frese, S; Tschan, M; Brunner, T (2010). Synergistic induction of cell death in liver tumor cells by TRAIL and chemotherapeutic drugs via the BH3-only proteins Bim and Bid. Cell death & disease, 1(e86), e86. London: Nature Publishing Group 10.1038/cddis.2010.66
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Although death receptors and chemotherapeutic drugs activate distinct apoptosis signaling cascades, crosstalk between the extrinsic and intrinsic apoptosis pathway has been recognized as an important amplification mechanism. Best known in this regard is the amplification of the Fas (CD95) signal in hepatocytes via caspase 8-mediated cleavage of Bid and activation of the mitochondrial apoptosis pathway. Recent evidence, however, indicates that activation of other BH3-only proteins may also be critical for the crosstalk between death receptors and mitochondrial triggers. In this study, we show that TNF-related apoptosis-inducing ligand (TRAIL) and chemotherapeutic drugs synergistically induce apoptosis in various transformed and untransformed liver-derived cell lines, as well as in primary human hepatocytes. Both, preincubation with TRAIL as well as chemotherapeutic drugs could sensitize cells for apoptosis induction by the other respective trigger. TRAIL induced a strong and long lasting activation of Jun kinase, and activation of the BH3-only protein Bim. Consequently, synergistic induction of apoptosis by TRAIL and chemotherapeutic drugs was dependent on Jun kinase activity, and expression of Bim and Bid. These findings confirm a previously defined role of TRAIL and Bim in the regulation of hepatocyte apoptosis, and demonstrate that the TRAIL-Jun kinase-Bim axis is a major and important apoptosis amplification pathway in primary hepatocytes and liver tumor cells.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > Service Sector > Institute of Pathology 04 Faculty of Medicine > Department of Gastro-intestinal, Liver and Lung Disorders (DMLL) > Clinic of Thoracic Surgery 04 Faculty of Medicine > Department of Haematology, Oncology, Infectious Diseases, Laboratory Medicine and Hospital Pharmacy (DOLS) > Clinic of Medical Oncology |
UniBE Contributor: |
Corazza, Nadia, Badmann, Anastasia, Sidler, Daniel (A), Frese, Steffen R., Tschan, Mario Paul, Brunner, Thomas (A) |
ISSN: |
2041-4889 |
Publisher: |
Nature Publishing Group |
Language: |
English |
Submitter: |
Factscience Import |
Date Deposited: |
04 Oct 2013 14:09 |
Last Modified: |
29 Mar 2023 23:31 |
Publisher DOI: |
10.1038/cddis.2010.66 |
PubMed ID: |
21368859 |
Web of Science ID: |
000283582100008 |
BORIS DOI: |
10.7892/boris.908 |
URI: |
https://boris.unibe.ch/id/eprint/908 (FactScience: 201394) |
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