Cited by 1,165Genomics and Chromatin DynamicsDevelopmental Biology and Gene RegulationChromosomal and Genetic Variations

In vivo enhancer analysis of human conserved non-coding sequences

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Pennacchio, Len A., Ahituv, Nadav, Moses, Alan M., Prabhakar, Shyam, Nobrega, Marcelo A., Shoukry, Malak, Minovitsky, Simon, Dubchak, Inna +11 more·2006·Nature

Abstract

Identifying the sequences that direct the spatial and temporal expression of genes and defining their function in vivo remains a significant challenge in the annotation of vertebrate genomes. One major obstacle is the lack of experimentally validated training sets. In this study, we made use of extreme evolutionary sequence conservation as a filter to identify putative gene regulatory elements, and characterized the in vivo enhancer activity of a large group of non-coding elements in the human genome that are conserved in human-pufferfish, Takifugu (Fugu) rubripes, or ultraconserved in human-mouse-rat. We tested 167 of these extremely conserved sequences in a transgenic mouse enhancer assay. Here we report that 45% of these sequences functioned reproducibly as tissue-specific enhancers of gene expression at embryonic day 11.5. While directing expression in a broad range of anatomical structures in the embryo, the majority of the 75 enhancers directed expression to various regions of the developing nervous system. We identified sequence signatures enriched in a subset of these elements that targeted forebrain expression, and used these features to rank all approximately 3,100 non-coding elements in the human genome that are conserved between human and Fugu. The testing of the top predictions in transgenic mice resulted in a threefold enrichment for sequences with forebrain enhancer activity. These data dramatically expand the catalogue of human gene enhancers that have been characterized in vivo, and illustrate the utility of such training sets for a variety of biological applications, including decoding the regulatory vocabulary of the human genome.

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  • Not all distal conserved elements are detectably enhancers, and far more of the gene-distal non-coding genome is annotated as a regulatory element than is conserved.

    “Not all distal conserved elements are detectably enhancers39 and far more of the gene-distal non-coding genome is annotated as a regulatory element than is conserved60,104.”
  • Evolutionary conservation can support the functional candidacy of a region, but not all enhancers are conserved.

    “Evolutionary conservation can support the functional candidacy of a region39, but not all enhancers are conserved123-125126.”
  • Comparative genomic methods have identified putative conserved cis-regulatory elements or regulatory RNAs, a disproportionate number of which are proposed to regulate human brain-expressed genes.

    “Comparative genomic methods have been applied by several groups (Lindblad-Toh et al., 2011; Margulies et al., 2007; Pennacchio et al., 2006; Pollard et al., 2006; Prabhakar et al., 2006; Siepel et al., 2005) to identify putative conserved CREs or regulatory RNAs, a disproportionate number of which are proposed to regulate human brain-expressed genes (Johnson et al., 2009; Pennacchio et al., 2006;”

    From The Cellular and Molecular Landscapes of the Developing Human Central Nervous System (2016) · cites this paper as Pennacchio et al., 2006

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Research works printed but not linked: 3

  1. Nobrega, M. A., Ovcharenko, I., Afzal, V. & Rubin, E. M. Scanning human gene deserts for long-range enhancers. Science 302, 413 (2003).
  2. Woolfe, A. et al. Highly conserved non-coding sequences are associated with vertebrate development. PLoS Biol 3, e7 (2005).
  3. Davidson, E. H. Genomic Regulatory Systems: In Development and Evolution (Academic Press, San Diego, 2001).

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Authors
Pennacchio, L. A., Ahituv, N., Moses, A. M., Prabhakar, S., Nobrega, M. A., Shoukry, M., Minovitsky, S., Dubchak, I., Holt, A., Lewis, K. D., Plajzer-Frick, I., Akiyama, J., De Val, S., Afzal, V., Black, B. L., Couronne, O., Eisen, M. B., Visel, A., & Rubin, E. M.
Affiliations
  • Lawrence Berkeley National Laboratory (US)
  • University of California, San Francisco (US)
Corresponding author
Pennacchio, Len A.
Venue
Nature
Published
2006-11
Volume
444
Issue
7118
Pages
499-502
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1996760543
Cited by
1,165
References
2
Citations by year
2026: 23 · 2025: 25 · 2024: 34 · 2023: 34 · 2022: 24 · 2021: 48 · 2020: 50 · 2019: 44 · 2018: 50 · 2017: 51 · 2016: 66 · 2015: 67 · 2014: 74 · 2013: 73 · 2012: 97
FWCI
35.52
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • University of North Texas Digital Library (University of North Texas) (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
Keywords
enhancers, conserved non-coding elements, ultraconserved elements, tissue-specific enhancers, embryonic gene expression, brain development, gene regulatory elements, enhancer prediction
MeSH terms
Animals, Base Sequence, Chromosomes, Human, Pair 16, Embryo, Mammalian, Embryo, Nonmammalian, Enhancer Elements, Genetic, Humans, Mice, Transgenic, Nervous System, Transcription Factors, Gene Expression, Genome, Human, Prosencephalon, Conserved Sequence, Genomics, Takifugu, Mice

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