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Therapeutic adenine base editing of human hematopoietic stem cells

Author

Listed:
  • Jiaoyang Liao

    (Institute of Biomedical Sciences and School of Life Sciences, East China Normal University)

  • Shuanghong Chen

    (Institute of Biomedical Sciences and School of Life Sciences, East China Normal University)

  • Shenlin Hsiao

    (Institute of Biomedical Sciences and School of Life Sciences, East China Normal University)

  • Yanhong Jiang

    (Institute of Biomedical Sciences and School of Life Sciences, East China Normal University)

  • Yang Yang

    (The First Affiliated Hospital of Guangxi Medical University)

  • Yuanjin Zhang

    (East China Normal University)

  • Xin Wang

    (East China Normal University)

  • Yongrong Lai

    (The First Affiliated Hospital of Guangxi Medical University)

  • Daniel E. Bauer

    (Dana-Farber Cancer Institute and Boston Children’s Hospital, Harvard Medical School)

  • Yuxuan Wu

    (Institute of Biomedical Sciences and School of Life Sciences, East China Normal University)

Abstract

In β-thalassemia, either γ-globin induction to form fetal hemoglobin (α2γ2) or β-globin repair to restore adult hemoglobin (α2β2) could be therapeutic. ABE8e, a recently evolved adenine base editor variant, can achieve efficient adenine conversion, yet its application in patient-derived hematopoietic stem cells needs further exploration. Here, we purified ABE8e for ribonucleoprotein electroporation of β-thalassemia patient CD34+ hematopoietic stem and progenitor cells to introduce nucleotide substitutions that upregulate γ-globin expression in the BCL11A enhancer or in the HBG promoter. We observed highly efficient on-target adenine base edits at these two regulatory regions, resulting in robust γ-globin induction. Moreover, we developed ABE8e-SpRY, a near-PAMless ABE variant, and successfully applied ABE8e-SpRY RNP to directly correct HbE and IVS II-654 mutations in patient-derived CD34+ HSPCs. Finally, durable therapeutic editing was produced in self-renewing repopulating human HSCs as assayed in primary and secondary recipients. Together, these results support the potential of ABE-mediated base editing in HSCs to treat inherited monogenic blood disorders.

Suggested Citation

  • Jiaoyang Liao & Shuanghong Chen & Shenlin Hsiao & Yanhong Jiang & Yang Yang & Yuanjin Zhang & Xin Wang & Yongrong Lai & Daniel E. Bauer & Yuxuan Wu, 2023. "Therapeutic adenine base editing of human hematopoietic stem cells," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-022-35508-7
    DOI: 10.1038/s41467-022-35508-7
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    References listed on IDEAS

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    1. Gregory A. Newby & Jonathan S. Yen & Kaitly J. Woodard & Thiyagaraj Mayuranathan & Cicera R. Lazzarotto & Yichao Li & Heather Sheppard-Tillman & Shaina N. Porter & Yu Yao & Kalin Mayberry & Kelcee A. , 2021. "Base editing of haematopoietic stem cells rescues sickle cell disease in mice," Nature, Nature, vol. 595(7866), pages 295-302, July.
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    3. Alexis C. Komor & Yongjoo B. Kim & Michael S. Packer & John A. Zuris & David R. Liu, 2016. "Programmable editing of a target base in genomic DNA without double-stranded DNA cleavage," Nature, Nature, vol. 533(7603), pages 420-424, May.
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