L1000 Dataset -small molecule perturbagens- LINCS Joint Project

L1000 is a bead-based, high-throughput gene expression assay in which cultured cells are treated with various chemical and genetic perturbations and the corresponding transcriptional responses are measured.The data are processed through a computational system, that converts raw fluorescence intensities into differential gene expression signatures. The data at each stage of the pre-processing are available: Level 1 (LXB) - raw, unprocessed flow cytometry data from Luminex scanners. One LXB file is generated for each well of a 384-well plate, and each file contains a fluorescence intensity value for every observed analyte in the well. Level 2 (GEX) - gene expression values per 1,000 genes after deconvolution from Luminex beads. Level 3 (Q2NORM) - gene expression profiles of both directly measured landmark transcripts plus inferred genes. Normalized using invariant set scaling followed by quantile normalization. Level 4 (Z-SCORES) - signatures with differentially expressed genes computed by robust z-scores for each profile relative to control (PC relative to plate population as control; VC relative to vehicle control)