Editing the core region in HPFH deletions alters fetal and adult globin expression for treatment of [beta]-hemoglobinopathies
Abstract: Reactivation of fetal hemoglobin (HbF) is a commonly adapted strategy to ameliorate β-hemoglobinopathies. However, the continued production of defective adult hemoglobin (HbA) limits HbF tetramer production affecting the therapeutic benefits. Here, we evaluated deletional hereditary persistence of fetal hemoglobin (HPFH) mutations and identified an 11-kb sequence, encompassing putative repressor region (PRR) to β-globin exon-1 (βE1), as the core deletion that ablates HbA and exhibits superior HbF production compared with HPFH or other well-established targets. PRR-βE1-edited hematopoietic stem and progenitor cells (HSPCs) retained their genome integrity and their engraftment potential to repopulate for long-term hematopoiesis in immunocompromised mice producing HbF positive cells in vivo. Furthermore, PRR-βE1 gene editing is feasible without ex vivo HSPC culture. Importantly, the editing induced therapeutically significant levels of HbF to reverse the phenotypes of both sickle cell disease and β-thalassemia major. These findings imply that PRR-βE1 gene editing of patient HSPCs could lead to improved therapeutic outcomes for β-hemoglobinopathy gene therapy
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Notes
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Molecular therapy. Nucleic acids. - 32 (2023) , 671-688, ISSN: 2162-2531
- Event
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Veröffentlichung
- (where)
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Freiburg
- (who)
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Universität
- (when)
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2023
- Creator
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Venkatesan, Vigneshwaran
Rhiel, Manuel
Geoffroy, Andrieux
Börries, Melanie
Cathomen, Anton
Thangavel, Saravanabhavan
- DOI
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10.1016/j.omtn.2023.04.024
- URN
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urn:nbn:de:bsz:25-freidok-2366716
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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25.03.2025, 1:51 PM CET
Data provider
This object is provided by:
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Venkatesan, Vigneshwaran
- Rhiel, Manuel
- Geoffroy, Andrieux
- Börries, Melanie
- Cathomen, Anton
- Thangavel, Saravanabhavan
- Universität
Time of origin
- 2023
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