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High-Throughput, Image-Based Screening of Genetic Variant Libraries

George Emanuel, Jeffrey R. Moffitt & Xiaowei Zhuang
Nature Methods 14, 1159-1162 (2017)

We report a high-throughput screening method that allows diverse genotypes and corresponding phenotypes to be imaged in individual cells. We achieve genotyping by introducing barcoded genetic variants into cells as pooled libraries and reading the barcodes out using massively multiplexed fluorescence in situ hybridization. To demonstrate the power of image-based pooled screening, we identified brighter and more photostable variants of the fluorescent protein YFAST among 60,000 variants.

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