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Surgical Cisterna Magna Injection: A Method for Administering Tumor Cells Directly into Central Nervous System of Murine Model
Overview
In this video, we describe the procedure to deliver human-derived tumor cells into the cisterna magna of a mouse’s brain. The orthotopic mouse model can be used to study metastatic spread of cancer to the cranial meninges.
Protocol
All procedures involving animal models have been reviewed by the local institutional animal care committee and the JoVE veterinary review board.
1. Preparation of CTCs
- Calculate the number of CTCs needed for injection and prepare a single-cell suspension at 1.0 × 104 cells/μL in sterile phosphate-buffered saline (PBS). Place the cell suspension on ice or at 4 °C throughout the procedure.
NOTE: When using cell lines .......
Representative Results
Figure 1: Injection of circulating tumor cells into the cisterna magna in a murine xenograft model to study leptomeningeal disease and central nervous system metastases. (A) An illustration showing the location of the cisterna magna and the CSF accessing site, in which CTCs are injected using a Hamilton syringe. (B) A representative IVIS image of mice that had developed leptomeningeal disease and central nervous sys.......
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Source: Law, V. et al. A Murine Ommaya Xenograft Model to Study Direct-Targeted Therapy of Leptomeningeal Disease. J. Vis. Exp. (2021)
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