Multicellular 3D “oids” (tumoroids, spheroids, organoids) have the potential to better predict the effects of drug candidates during preclinical screening. However, compared to 2D cell monolayers, assays using 3D model systems are more challenging.

In this technical note we describe how to image and analyze solid spheroids in 3D using the Opera Phenix^™and Operetta^™CLS high-content screening systems and Harmony^® 4.8 imaging and analysis software.

We address: