RT Journal Article SR Electronic T1 Multiplexed single-cell profiling of post-perturbation transcriptional responses to define cancer vulnerabilities and therapeutic mechanism of action JF bioRxiv FD Cold Spring Harbor Laboratory SP 868752 DO 10.1101/868752 A1 James M. McFarland A1 Brenton R. Paolella A1 Allison Warren A1 Kathryn Geiger-Schuller A1 Tsukasa Shibue A1 Michael Rothberg A1 Olena Kuksenko A1 Andrew Jones A1 Emily Chambers A1 Danielle Dionne A1 Samantha Bender A1 Brian M. Wolpin A1 Mahmoud Ghandi A1 Itay Tirosh A1 Orit Rozenblatt-Rosen A1 Jennifer A. Roth A1 Todd R. Golub A1 Aviv Regev A1 Andrew J. Aguirre A1 Francisca Vazquez A1 Aviad Tsherniak YR 2019 UL http://biorxiv.org/content/early/2019/12/08/868752.abstract AB Assays to study cancer cell responses to pharmacologic or genetic perturbations are typically restricted to using simple phenotypic readouts such as proliferation rate or the expression of a marker gene. Information-rich assays, such as gene-expression profiling, are generally not amenable to efficient profiling of a given perturbation across multiple cellular contexts. Here, we developed MIX-Seq, a method for multiplexed transcriptional profiling of post-perturbation responses across a mixture of samples with single-cell resolution, using SNP-based computational demultiplexing of single-cell RNA-sequencing data. We show that MIX-Seq can be used to profile responses to chemical or genetic perturbations across pools of 100 or more cancer cell lines, and combine it with Cell Hashing to further multiplex additional experimental conditions, such as multiple post-treatment time points or drug doses. Analyzing the high-content readout of scRNA-seq reveals both shared and context-specific transcriptional response components that can identify drug mechanism of action and can be used to predict long-term cell viability from short-term transcriptional responses to treatment.