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@ARTICLE{Venkatesan:276216,
author = {V. Venkatesan and A. C. Christopher and M. Rhiel and M. K.
K. Azhagiri and P. Babu and K. Walavalkar and B. Saravanan
and G. Andrieux$^*$ and S. Rangaraj and S. Srinivasan and K.
V. Karuppusamy and A. Jacob and A. Bagchi and A. A. Pai and
Y. Nakamura and R. Kurita and P. Balasubramanian and R. Pai
and S. K. Marepally and K. M. Mohankumar and S. R.
Velayudhan and M. Börries$^*$ and D. Notani and T. Cathomen
and A. Srivastava and S. Thangavel},
title = {{E}diting the core region in {HPFH} deletions alters fetal
and adult globin expression for treatment of
β-hemoglobinopathies.},
journal = {Molecular Therapy / Nucleic Acids},
volume = {32},
issn = {2162-2531},
address = {New York, NY},
publisher = {Nature Publ. Group},
reportid = {DKFZ-2023-01028},
pages = {671 - 688},
year = {2023},
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.},
keywords = {HPFH mutation (Other) / MT: RNA/DNA Editing (Other) /
beta-thalassemia (Other) / deletional HPFH (Other) / fetal
hemoglobin (Other) / gene editing (Other) / gene therapy
(Other) / hematopoietic stem cells (Other) / large deletions
(Other) / locus control region. (Other) / sickle cell
diseases (Other)},
cin = {FR01},
ddc = {610},
cid = {I:(DE-He78)FR01-20160331},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:37215154},
pmc = {pmc:PMC10197010},
doi = {10.1016/j.omtn.2023.04.024},
url = {https://inrepo02.dkfz.de/record/276216},
}