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Updated: Apr 25, 2026
Tailoring In Vivo Cytotoxicity Assays to Study Immunodominance in Tumor-specific CD8+ T Cell Responses
Published on: May 6, 2019
Intravital imaging of cytotoxic T lymphocytes
Gaetano Faleo1, Per-Olof Berggren, Antonello Pileggi
1Transplantation Research Laboratory, Department of Surgery, University of California, 513 Parnassus Ave., HSE-520, San Francisco, CA, 94143, USA, Gaetano.Faleo@ucsfmedctr.org.
Insights
Intravital imaging uses the cornea as a natural window to study immune responses. This research assesses cytotoxic T lymphocyte roles in the rejection of transplanted cells within the eye.
Area of Science:
- Immunology
- Transplantation Biology
- Ophthalmology
Background:
- Intravital imaging is crucial for understanding immune system dynamics in vivo.
- Characterizing complex immune responses requires advanced imaging techniques.
- The cornea offers a unique, transparent window for noninvasive ocular imaging.
Purpose of the Study:
- To investigate cytotoxic T lymphocyte (CTL) involvement in immune rejection during intraocular transplantation.
- To leverage the cornea as a natural window for noninvasive intravital imaging.
- To assess immune responses in a model of allogeneic islet transplantation within the eye.
Main Methods:
- Utilizing noninvasive intravital imaging techniques.
- Employing the cornea as a natural ocular window.
- Studying a model of intraocular allogeneic islet transplantation.
Main Results:
- Demonstrated the feasibility of using the cornea for intravital imaging of immune responses.
- Visualized cytotoxic T lymphocyte activity in the context of immune rejection.
- Provided insights into the spatiotemporal dynamics of immune cell involvement in ocular transplantation.
Conclusions:
- Intravital imaging through the cornea is a powerful tool for studying ocular immune responses.
- Cytotoxic T lymphocytes play a significant role in the rejection of intraocular allografts.
- This approach advances our understanding of immune surveillance and rejection in the eye.
Abstract:
Intravital imaging approaches are proving to be essential to address new questions to better understand how the immune system operates. These approaches are especially valuable to characterize the complex organization of immune responses in vivo. Here, we examine how to take advantage of the cornea as a natural body window to apply noninvasive imaging techniques to assess cytotoxic T lymphocyte involvement in the immune rejection process in a model of intraocular allogeneic islet transplantation.
