Imaging-based phenotypic screening uses cellular phenotypes to describe the drug performance, which generally fo-cuses on single cellular feature, lacking of a comprehensive characterization. Here, we propose a high content phe-notypic screening method based on expansion microscopy (ExM) assisted Cell Painting, which enables multi-channel imaging with approximately 50 nm resolution. As a demonstration, we applied this method to a phenotypic screening involving five drugs. The morphological attributes of three subcellular structures were summarized to consist a “fingerprint” describing the drug effect. The proposed method can provide comprehensive and detailed clues for drug evaluation, enriching the content of phenotypic screening
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Project Supported:
The National Basic Research Program of China (973 Program)