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Abstract

Cancer Research

Modeling Brain Metastasis by Internal Carotid Artery Injection of Cancer Cells

Published: August 2nd, 2022

DOI:

10.3791/64216

1UQ Centre for Clinical Research, The University of Queensland, 2Centre for Advanced Imaging, Australian Institute for Bioengineering and Nanotechnology and ARC Training Centre for Innovation in Biomedical Imaging Technology, The University of Queensland, 3School of Biomedical Sciences, The University of Queensland, 4Mater Research and Mater Research Institute, The University of Queensland, 5Pathology Queensland, Royal Brisbane Women's Hospital

* These authors contributed equally

Abstract

Brain metastasis is a cause of severe morbidity and mortality in cancer patients. Critical aspects of metastatic diseases, such as the complex neural microenvironment and stromal cell interaction, cannot be entirely replicated with in vitro assays; thus, animal models are critical for investigating and understanding the effects of therapeutic intervention. However, most brain tumor xenografting methods do not produce brain metastases consistently in terms of the time frame and tumor burden. Brain metastasis models generated by intracardiac injection of cancer cells can result in unintended extracranial tumor burden and lead to non-brain metastatic morbidity and mortality. Although intracranial injection of cancer cells can limit extracranial tumor formation, it has several caveats, such as the injected cells frequently form a singular tumor mass at the injection site, high leptomeningeal involvement, and damage to brain vasculature during needle penetration. This protocol describes a mouse model of brain metastasis generated by internal carotid artery injection. This method produces intracranial tumors consistently without the involvement of other organs, enabling the evaluation of therapeutic agents for brain metastasis.

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Keywords Brain Metastasis

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