Abstract
The immune synapse is a key structure organizing T-cell activation against foreign entities, such as cancer cells expressing neoantigens. One crucial step in this activation cascade is the intracellular Ca2+ ([Ca2+]i) response that shapes T cells for proliferation, differentiation, and cytotoxicity. The development of calcium probes coupled to real-time fluorescence microscopy has allowed a close study of this phenomenon in vitro. Such systems have provided valuable insights on the consequences of Ca2+ responses on T cells, including cytotoxicity and cytoskeletal remodeling. However, in vitro models do not recapitulate the tissue architecture that T cells come in contact with in vivo. Thus, there is a growing necessity for better understanding the factors influencing Ca2+ response in T cells including in genetically modified T cells (e.g., CAR T cells). In this methodology chapter, we describe an experimental system to measure [Ca2+]i signals of CAR T cells loaded with the calcium probe Fluo-4 on fresh tumor slices. Combined with confocal fluorescent imaging, this model offers an approach to image early T-cell activation in a three-dimensional (3D) tissue environment.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.