High-throughput RNA sequencing reveals structural differences of orthologous brain-expressed genes between western lowland gorillas and humans

Leonard Lipovich, Zhuo Cheng Hou, Hui Jia, Christopher Sinkler, Michael Mcgowen, Kirstin N. Sterner, Amy Weckle, Amara B. Sugalski, Lenore Pipes, Domenico L. Gatti, Christopher E. Mason, Chet C. Sherwood, Patrick R. Hof, Christopher W. Kuzawa, Lawrence I. Grossman, Morris Goodman, Derek E. Wildman

Research output: Contribution to journalArticle

Abstract

The human brain and human cognitive abilities are strikingly different from those of other great apes despite relatively modest genome sequence divergence. However, little is presently known about the interspecies divergence in gene structure and transcription that might contribute to these phenotypic differences. To date, most comparative studies of gene structure in the brain have examined humans, chimpanzees, and macaque monkeys. To add to this body of knowledge, we analyze here the brain transcriptome of the western lowland gorilla (Gorilla gorilla gorilla), an African great ape species that is phylogenetically closely related to humans, but with a brain that is approximately one-third the size. Manual transcriptome curation from a sample of the planum temporale region of the neocortex revealed 12 protein-coding genes and one noncoding-RNA gene with exons in the gorilla unmatched by public transcriptome data from the orthologous human loci. These interspecies gene structure differences accounted for a total of 134 amino acids in proteins found in the gorilla that were absent from protein products of the orthologous human genes. Proteins varying in structure between human and gorilla were involved in immunity and energy metabolism, suggesting their relevance to phenotypic differences. This gorilla neocortical transcriptome comprises an empirical, not homology- or prediction-driven, resource for orthologous gene comparisons between human and gorilla. These findings provide a unique repository of the sequences and structures of thousands of genes transcribed in the gorilla brain, pointing to candidate genes that may contribute to the traits distinguishing humans from other closely related great apes.

Original languageEnglish (US)
Pages (from-to)288-308
Number of pages21
JournalJournal of Comparative Neurology
Volume524
Issue number2
DOIs
StatePublished - Feb 1 2016

Keywords

  • Alternative splicing
  • BTBD8
  • Genomics
  • Long noncoding RNA (lncRNA)
  • Planum temporale
  • Protein structure

ASJC Scopus subject areas

  • Neuroscience(all)

Fingerprint Dive into the research topics of 'High-throughput RNA sequencing reveals structural differences of orthologous brain-expressed genes between western lowland gorillas and humans'. Together they form a unique fingerprint.

  • Cite this

    Lipovich, L., Hou, Z. C., Jia, H., Sinkler, C., Mcgowen, M., Sterner, K. N., Weckle, A., Sugalski, A. B., Pipes, L., Gatti, D. L., Mason, C. E., Sherwood, C. C., Hof, P. R., Kuzawa, C. W., Grossman, L. I., Goodman, M., & Wildman, D. E. (2016). High-throughput RNA sequencing reveals structural differences of orthologous brain-expressed genes between western lowland gorillas and humans. Journal of Comparative Neurology, 524(2), 288-308. https://doi.org/10.1002/cne.23843