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Cis-regulatory evolution of the recently expanded Ly49 gene family

Author

Listed:
  • Changxu Fan

    (Washington University School of Medicine
    Washington University School of Medicine)

  • Xiaoyun Xing

    (Washington University School of Medicine
    Washington University School of Medicine)

  • Samuel J. H. Murphy

    (Washington University School of Medicine
    Washington University School of Medicine)

  • Jennifer Poursine-Laurent

    (Washington University School of Medicine)

  • Heather Schmidt

    (Washington University School of Medicine
    Washington University School of Medicine)

  • Bijal A. Parikh

    (Washington University School of Medicine)

  • Jeesang Yoon

    (Washington University School of Medicine)

  • Mayank N. K. Choudhary

    (Washington University School of Medicine
    Washington University School of Medicine)

  • Naresha Saligrama

    (Washington University School of Medicine
    Washington University School of Medicine
    Washington University School of Medicine
    Washington University School of Medicine)

  • Sytse J. Piersma

    (Washington University School of Medicine
    Washington University School of Medicine)

  • Wayne M. Yokoyama

    (Washington University School of Medicine
    Washington University School of Medicine)

  • Ting Wang

    (Washington University School of Medicine
    Washington University School of Medicine
    Washington University School of Medicine)

Abstract

Comparative genomics has revealed the rapid expansion of multiple gene families involved in immunity. Members within each gene family often evolved distinct roles in immunity. However, less is known about the evolution of their epigenome and cis-regulation. Here we systematically profile the epigenome of the recently expanded murine Ly49 gene family that mainly encode either inhibitory or activating surface receptors on natural killer cells. We identify a set of cis-regulatory elements (CREs) for activating Ly49 genes. In addition, we show that in mice, inhibitory and activating Ly49 genes are regulated by two separate sets of proximal CREs, likely resulting from lineage-specific losses of CRE activity. Furthermore, we find that some Ly49 genes are cross-regulated by the CREs of other Ly49 genes, suggesting that the Ly49 family has begun to evolve a concerted cis-regulatory mechanism. Collectively, we demonstrate the different modes of cis-regulatory evolution for a rapidly expanding gene family.

Suggested Citation

  • Changxu Fan & Xiaoyun Xing & Samuel J. H. Murphy & Jennifer Poursine-Laurent & Heather Schmidt & Bijal A. Parikh & Jeesang Yoon & Mayank N. K. Choudhary & Naresha Saligrama & Sytse J. Piersma & Wayne , 2024. "Cis-regulatory evolution of the recently expanded Ly49 gene family," Nature Communications, Nature, vol. 15(1), pages 1-19, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-48990-y
    DOI: 10.1038/s41467-024-48990-y
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    References listed on IDEAS

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