TY - JOUR A1 - Murray, John Isaac A1 - Boyle, Thomas J. A1 - Preston, Elicia A1 - Vafeados, Dionne A1 - Mericle, Barbara A1 - Weisdepp, Peter A1 - Zhao, Zhongying A1 - Bao, Zhirong A1 - Boeck, Max A1 - Waterston, Robert H. T1 - Multidimensional regulation of gene expression in the C. elegans embryo Y1 - 2012/07/01 JF - Genome Research JO - Genome Research SP - 1282 EP - 1294 DO - 10.1101/gr.131920.111 VL - 22 IS - 7 UR - http://genome.cshlp.org/content/22/7/1282.abstract N2 - How cells adopt different expression patterns is a fundamental question of developmental biology. We quantitatively measured reporter expression of 127 genes, primarily transcription factors, in every cell and with high temporal resolution in C. elegans embryos. Embryonic cells are highly distinct in their gene expression; expression of the 127 genes studied here can distinguish nearly all pairs of cells, even between cells of the same tissue type. We observed recurrent lineage-regulated expression patterns for many genes in diverse contexts. These patterns are regulated in part by the TCF-LEF transcription factor POP-1. Other genes' reporters exhibited patterns correlated with tissue, position, and left–right asymmetry. Sequential patterns both within tissues and series of sublineages suggest regulatory pathways. Expression patterns often differ between embryonic and larval stages for the same genes, emphasizing the importance of profiling expression in different stages. This work greatly expands the number of genes in each of these categories and provides the first large-scale, digitally based, cellular resolution compendium of gene expression dynamics in live animals. The resulting data sets will be a useful resource for future research. ER -