Dr. John O’Rourke Ph.D., MBA
: Dr. John O’Rourke Ph.D., MBA
President and CEO, BennuBio, Inc.
Simplified and High-Throughput Analysis of Intact 3D Models Using Large-Particle Imaging Cytometry
Three-dimensional (3D) models are essential tools in translational and clinical research, allowing for the exploration of complex biological processes in a physiologically relevant context and advancing the development of multiple therapeutic modalities. However, many current analysis methods are not truly high-throughput, often restricting organoid and spheroid cultures to traditional 96- or 384-well plates with only one particle per well. This limitation can result in the analysis of just a few 3D particles per treatment, potentially compromising data reliability due to the biological variability among individual particles. Such limitations can undermine statistical robustness and hinder the detection of subtle differences or trends.
Growing 3D models in bulk offers advantages such as scalability and adaptability to bioreactors, making them optimal for various applications. However, analyzing high numbers of 3D particles in either suspension or static cultures is challenging, often requiring tedious workflows or dissociating particles into single cells for flow cytometry.
To address these challenges, we utilized the Velocyt imaging large particle cytometer by BennuBio to analyze intact 3D models from both suspension and static cultures. The Velocyt employs parallel-stream acoustic flow technology combined with camera-based optics, merging the imaging capabilities of microscopy with the speed and ease of flow cytometry. In our first case study, we conducted a longitudinal experiment to measure size distribution, shape, and viability of intact 3D cultures grown in Corning® spinner flasks using different media formulations. In the second case study, we used Corning Elplasia® microwell technology to perform immune cell killing assays, measuring both immune cell penetrance and 3D viability. These studies highlight the flexibility and streamlined workflow of the Velocyt, demonstrating its value across multiple 3D applications.