- Title
- A new systemic disease mouse model for glioblastoma capable of single-tumour-cell detection
- Creator
- Ware, Thomas; Luwor, Rodney; Zhu, Hong-Jian
- Date
- 2024
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/199480
- Identifier
- vital:19227
- Identifier
-
https://doi.org/10.3390/cells13020192
- Identifier
- ISSN:2073-4409 (ISSN)
- Abstract
- Background: Glioblastoma is characterised by extensive infiltration into the brain parenchyma, leading to inevitable tumor recurrence and therapeutic failure. Future treatments will need to target the specific biology of tumour recurrence, but our current understanding of the underlying mechanisms is limited. Significantly, there is a lack of available methods and models that are tailored to the examination of tumour recurrence. Methods: NOD-SCID mice were orthotopically implanted with luciferase-labelled donor U87MG or MU20 glioblastoma cells. Four days later, an unlabelled recipient tumor was implanted on the contralateral side. The mice were euthanised at a humane end-point and tissue and blood samples were collected for ex vivo analyses. Results: The ex vivo analyses of the firefly-labelled MU20 tumours displayed extensive invasion at the primary tumour margins, whereas the firefly-labelled U87MG tumours exhibited expansive phenotypes with no evident invasions at the tumour margins. Luciferase signals were detected in the contralateral unlabelled recipient tumours for both the U87MG and MU20 tumours compared to the non-implanted control brain. Remarkably, tumour cells were uniformly detected in all tissue samples of the supratentorial brain region compared to the control tissue, with single tumour cells detected in some tissue samples. Circulating tumour cells were also detected in the blood samples of most of the xenografted mice. Moreover, tumour cells were detected in the lungs of all of the mice, a probable event related to haematogenous dissemination. Similar results were obtained when the U87MG cells were alternatively labelled with gaussian luciferase. Conclusions: These findings describe a systemic disease model for glioblastoma which can be used to investigate recurrence biology and therapeutic efficacy towards recurrence. © 2024 by the authors.
- Publisher
- Multidisciplinary Digital Publishing Institute (MDPI)
- Relation
- Cells Vol. 13, no. 2 (2024), p.
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- https://creativecommons.org/licenses/by/4.0/
- Rights
- Copyright © 2024 by the authors.
- Rights
- Open Access
- Subject
- 31 Biological sciences; 32 Biomedical and clinical sciences; Glioblastoma; Orthotopic mouse model; Single-cell detection
- Full Text
- Reviewed
- Funder
- This work was supported by the Friends of The Royal Melbourne Hospital Neuroscience Foundation. Ware was supported by an Australian Postgraduate Award from the Australian Federal Government and the Ann Henderson PhD scholarship from Australian Rotary Health and Dine for a Cure.
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