RT Journal Article SR Electronic T1 Structurally conserved primate lncRNAs are transiently expressed during human cortical differentiation and influence cell type specific genes JF bioRxiv FD Cold Spring Harbor Laboratory SP 232553 DO 10.1101/232553 A1 Andrew R. Field A1 Frank M.J. Jacobs A1 Ian T. Fiddes A1 Alex P.R. Phillips A1 Andrea M. Reyes-Ortiz A1 Erin LaMontagne A1 Lila Whitehead A1 Vincent Meng A1 Jimi L. Rosenkrantz A1 Maximillian Haeussler A1 Sol Katzman A1 Sofie R. Salama A1 David Haussler YR 2017 UL http://biorxiv.org/content/early/2017/12/12/232553.abstract AB The cerebral cortex has expanded in size and complexity in primates, yet the underlying molecular mechanisms are obscure. We generated cortical organoids from human, chimpanzee, orangutan, and rhesus pluripotent stem cells and sequenced their transcriptomes at weekly time points for comparative analysis. We used transcript structure and expression conservation to discover thousands of expressed long non-coding RNAs (lncRNAs). Of 2,975 human, multi-exonic lncRNAs, 2,143 were structurally conserved to chimpanzee, 1,731 to orangutan, and 1,290 to rhesus. 386 human lncRNAs were transiently expressed (TrEx) and a similar expression pattern was often observed in great apes (46%) and rhesus (31%). Many TrEx lncRNAs were associated with neuroepithelium, radial glia, or Cajal-Retzius cells by single cell RNA-sequencing. 3/8 tested by ectopic expression showed ≥2-fold effects on neural genes. This rich resource of primate expression data in early cortical development provides a framework for identifying new, potentially functional lncRNAs.