3D Cytotoxicity Assays Using Immune Cells

In vitro assays can be used to test for the potency of a range of immune cells, including T and Natural Killer (NK) cells for immunotherapies. While many of these assays are conducted using traditional culturing methods, where cells are plated in microplate wells; many methods and technologies have been developed over the last decade to culture cells in three dimensions (3D) in order to better mimic in vivo conditions. These include hydrogel based methods and the use of ultra-low absorbent (ULA) coatings in microplate wells to allow cells to self-aggregate into spheroids. Microscopy is particularly adept at probing these 3D technologies, particularly with the use of spheroids where magnification is required to obtain quantitative data from the biology.

3D Cytotoxicity Assays using Immune Cells
Quantitative microscopy of NK cell-mediated apoptosis and necrosis occurring in a tumoroid within a collagen-based hydrogel.

The Cytation™ Cell Imaging Multi-Mode Reader, inconjunction with BioSpa™ 8 Automated Incubator is well suited to the long term kinetic cytotoxicity assays using 3D technologies and immune cells. The following application notes depict the use of NK cell- and T cell-mediated cytotoxicity assays conducted using a 3D collagen-based hydrogel and spheroids, respectively.


Application Notes