The Warburg Trap: a novel therapeutic approach for targeting osteosarcoma
Although urgently needed, no significant improvements in osteosarcoma (OS) therapy have been achieved within the last decades. Here, we present a new therapeutic approach based on drug combinations consisting of mitochondrial complex I (MCI) inhibitors and ionophores that induce cancer cell-specific...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2024
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| In: |
Cells
Year: 2024, Volume: 13, Issue: 1, Pages: 1-17 |
| ISSN: | 2073-4409 |
| DOI: | 10.3390/cells13010061 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/cells13010061 Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/2073-4409/13/1/61 
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| Author Notes: | Joerg Fellenberg, Sarina Losch, Elena Tripel, Burkhard Lehner and Svitlana Melnik |
| Summary: | Although urgently needed, no significant improvements in osteosarcoma (OS) therapy have been achieved within the last decades. Here, we present a new therapeutic approach based on drug combinations consisting of mitochondrial complex I (MCI) inhibitors and ionophores that induce cancer cell-specific cell death based on a modulation of cellular energy metabolism and intracellular pH (pHi) named the Warburg Trap (WT). The effects of several drug combinations on intracellular pH, cell viability, colony-forming capacity and expression of WNT-target genes were analysed using OS cell lines and primary human osteoblasts (HOB). Tumour take rates and tumour volumes were analysed in vivo using a chicken chorioallantoic membrane assay (CAM). Several WT drug combinations induced the intracellular acidification and apoptotic cell death in OS cells, whereas HOBs tolerated the treatment. A significant inhibition of the colony-forming ability of OS cells and downregulation of WNT-target genes suggest that cancer stem cells (CSCs) are also targeted by the WT approach. In vivo, we observed a significant reduction in the tumour take rates in response to WT drug treatment. Our data suggest that the Warburg Trap is a promising approach for the development of a novel and effective OS therapy to replace or supplement the current OS chemotherapy. |
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| Item Description: | Gesehen am 12.07.2024 |
| Physical Description: | Online Resource |
| ISSN: | 2073-4409 |
| DOI: | 10.3390/cells13010061 |