Intravital Microscopy of Tumor-associated Vasculature Using Advanced Dorsal Skinfold Window Chambers on Transgenic Fluorescent Mice

Overview

This protocol outlines the use of an advanced dorsal skinfold chamber for intravital imaging of tumor-associated vasculature in transgenic mice. This non-invasive imaging technique allows for high-resolution observations of biological processes over time.

Key Study Components

Area of Science

• Neuroscience
• Oncology
• Imaging Techniques

Background

• Intravital imaging provides insights into living biological systems.
• Transgenic mice with fluorescent markers enable visualization of specific cell types.
• This method is particularly useful for studying tumor progression and therapy responses.
• Longitudinal studies can be conducted to observe changes over time.

Purpose of Study

• To examine the development of tumor-associated vasculature in a mouse model.
• To improve understanding of tumor progression and therapeutic interventions.
• To utilize advanced imaging techniques for real-time observations.

Methods Used

• Implantation of tumor fragments into a dorsal window chamber.
• Surgical procedures performed under aseptic conditions.
• Use of confocal microscopy for imaging vascular development.
• Application of fluorescent markers to study blood flow and vessel formation.

Main Results

• Visualization of endothelial fronts and lumen formation in tumors.
• Observation of blood flow dynamics and extravasation of nanoparticles.
• Evidence of enhanced drug delivery into tumor interstitium with TNF treatment.
• Demonstration of the technique's utility in cancer research.

Conclusions

• The dorsal skinfold chamber is effective for studying tumor vasculature.
• Intravital imaging can reveal critical insights into tumor biology.
• This method has potential applications in evaluating therapeutic strategies.

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