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Systematic perturbation of retroviral LTRs reveals widespread long-range effects on human gene regulation.

eLife | 2018

Recent work suggests extensive adaptation of transposable elements (TEs) for host gene regulation. However, high numbers of integrations typical of TEs, coupled with sequence divergence within families, have made systematic interrogation of the regulatory contributions of TEs challenging. Here, we employ CARGO, our recent method for CRISPR gRNA multiplexing, to facilitate targeting of LTR5HS, an ape-specific class of HERVK (HML-2) LTRs that is active during early development and present in ~700 copies throughout the human genome. We combine CARGO with CRISPR activation or interference to, respectively, induce or silence LTR5HS en masse, and demonstrate that this system robustly targets the vast majority of LTR5HS insertions. Remarkably, activation/silencing of LTR5HS is associated with reciprocal up- and down-regulation of hundreds of human genes. These effects require the presence of retroviral sequences, but occur over long genomic distances, consistent with a pervasive function of LTR5HS elements as early embryonic enhancers in apes.

Pubmed ID: 30070637 RIS Download

Associated grants

  • Agency: NIGMS NIH HHS, United States
    Id: R01 GM112720
  • Agency: Howard Hughes Medical Institute, United States
  • Agency: NIH HHS, United States
    Id: S10 OD020141
  • Agency: NIGMS NIH HHS, United States
    Id: R01GM112720
  • Agency: National Science Foundation, International
    Id: Graduate Research Fellowship Program

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This is a list of tools and resources that we have found mentioned in this publication.


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