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A novel technique to quantify glioma tumor invasion using serial microscopy sections
N Shastry Akella1, Qiang Ding, Ingrid Menegazzo
1Department of Neurology, Division of Neuro-Oncology, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
Journal of Neuroscience Methods
|January 13, 2006
Summary
This study introduces a new method to measure how malignant glioma invades brain tissue in mice. The technique revealed more widespread invasion at 17 days compared to 10 days after tumor cell injection.
Area of Science:
- Neuro-oncology
- Cancer Biology
- In vivo models
Background:
- Malignant glioma invasion is a key factor in treatment resistance and patient outcomes.
- Accurate quantitative assessment of glioma invasion in vivo is crucial for developing effective therapies.
Purpose of the Study:
- To present and validate a novel quantitative technique for characterizing malignant glioma invasion in a syngeneic mouse model.
- To analyze changes in glioma invasion patterns over time using this new method.
Main Methods:
- Intracerebral injection of GL261 glioma cells into C57B1/6 mice.
- Brain tissue harvesting, fixation, and serial sectioning at 10 and 17 days post-injection.
- Digital image analysis of tumor invasion sites and custom MATLAB programming for quantitative characterization.
Main Results:
- A significant increase in the number and distance of discontinuous tumor invasion sites was observed at 17 days compared to 10 days.
- Scatter plot analysis revealed distinct groupings of invasion site characteristics (area, distance from centroid) between the two time points.
- The quantitative method successfully differentiated invasion patterns based on tumor progression time.
Conclusions:
- The developed quantitative technique effectively characterizes malignant glioma invasion in vivo.
- This method provides a valuable tool for future studies on invasion genes and therapeutic strategies targeting glioma invasion.