Abstract
Cancer cell spheroids are considered important preclinical tools to evaluate the efficacy of new drugs. In cancer cell spheroids, the cells assemble and grow in 3D structures with cell contact interactions that are partly impermeable, which leads to central hypoxia and necrosis. The cell spheroids thus possess several features identified in clinical tumors. Not only will the effect and behavior of therapeutic drugs in 3D cell spheroids be affected more similarly than in cells grown on culture plates, but molecular interactions and signaling pathways in cells are also more likely to mimic the in vivo situation. The monitoring of various biomarkers including lncRNAs in 3D cell spheroids is important to assess a potentially induced phenotype in the cells and the effects of drugs. Specifically, for lncRNAs, in situ localization can be done using locked nucleic acid (LNA) probe technology. Here we present a protocol for preparation of cell spheroids for use in LNA probe–based in situ hybridization to study lncRNA expression in paraffin embedded 3D cancer cell spheroids.
Key words
- lncRNA
- Spheroid
- LNA
- In situ hybridization
- MALAT1
- UCA1
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This study was supported by The Danish Agency for Science and Higher Education.
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Nielsen, B.S. et al. (2021). Detection of lncRNA by LNA-Based In Situ Hybridization in Paraffin-Embedded Cancer Cell Spheroids. In: Navarro, A. (eds) Long Non-Coding RNAs in Cancer. Methods in Molecular Biology, vol 2348. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-1581-2_8
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DOI: https://doi.org/10.1007/978-1-0716-1581-2_8
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