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SHR Neuro Krebs Kardio Lipid

Lohberger, B; Steinecker-Frohnwieser, B; Stuendl, N; Kaltenegger, H; Leithner, A; Rinner, B.
The Proteasome Inhibitor Bortezomib Affects Chondrosarcoma Cells via the Mitochondria-Caspase Dependent Pathway and Enhances Death Receptor Expression and Autophagy.
PLoS One. 2016; 11(12):e0168193-e0168193 [OPEN ACCESS]
Web of Science PubMed PUBMED Central FullText FullText_MUG

 

Autor/innen der Med Uni Graz:
Kaltenegger Heike
Leithner Andreas
Lohberger Birgit
Rinner Beate
Steinecker-Frohnwieser Bibiane
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Number of Figures: 6
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Abstract:
High grade chondrosarcoma is characterized by its lack of response to conventional cytotoxic chemotherapy, the tendency to develop lung metastases, and low survival rates. Research within the field prioritizes the development and expansion of new treatment options for dealing with unresectable or metastatic diseases. Numerous clinical trials using the proteasome inhibitor bortezomib have shown specific efficacy as an active antitumor agent for treating a variety of solid tumors. However, as of yet the effect of bortezomib on chondrosarcoma has not been investigated. In our study, bortezomib decreased cell viability and proliferation in two different chondrosarcoma cell lines in a time- and dose dependent manner. FACS analysis, mRNA- and protein expression studies illustrated that induction of apoptosis developed through the intrinsic mitochondria-caspase dependent pathway. Furthermore, bortezomib treatment significantly increased expression of the death receptors TRAILR-1 and TRAILR-2 in chondrosarcoma cells. An increased expression of the autophagy markers Atg5/12, Beclin, and LC3BI-II supports the interpretation that bortezomib functions as a trigger for autophagy. Our results demonstrated for the first time that bortezomib reduced viability and proliferation of chondrosarcoma cells, induced apoptosis via the mitochondria-caspase dependent pathway and enhanced death receptor expression and autophagy.
Find related publications in this database (using NLM MeSH Indexing)
Autophagy - drug effects
Autophagy-Related Protein 5 - metabolism
Beclin-1 - metabolism
Biomarkers - metabolism
Bone Neoplasms - metabolism
Bortezomib - pharmacology
Caspases - metabolism
Cell Line, Tumor -
Chondrosarcoma - metabolism
Humans -
Mitochondria - metabolism
Proteasome Inhibitors - pharmacology
Receptors, TNF-Related Apoptosis-Inducing Ligand - metabolism
Signal Transduction - drug effects

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