Haematologica
Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, Lund 22184.
Published: November 2023
Diamond-Blackfan anemia is a rare genetic bone marrow failure disorder which is usually caused by mutations in ribosomal protein genes. In the present study, we generated a traceable RPS19-deficient cell model using CRISPR-Cas9 and homology-directed repair to investigate the therapeutic effects of a clinically applicable lentiviral vector at single-cell resolution. We developed a gentle nanostraw delivery platform to edit the RPS19 gene in primary human cord bloodderived CD34+ hematopoietic stem and progenitor cells. The edited cells showed expected impaired erythroid differentiation phenotype, and a specific erythroid progenitor with abnormal cell cycle status accompanied by enrichment of TNFα/NF-κB and p53 signaling pathways was identified by single-cell RNA sequencing analysis. The therapeutic vector could rescue the abnormal erythropoiesis by activating cell cycle-related signaling pathways and promoted red blood cell production. Overall, these results establish nanostraws as a gentle option for CRISPR-Cas9- based gene editing in sensitive primary hematopoietic stem and progenitor cells, and provide support for future clinical investigations of the lentiviral gene therapy strategy.
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http://dx.doi.org/10.3324/haematol.2022.282068 | DOI Listing |
Turk J Haematol
January 2025
Hacettepe University, Faculty of Medicine, Department of Pediatric Hematology, Ankara, Türkiye.
Cell Stem Cell
January 2025
Division of Hematopoietic Innovative Therapies, CIEMAT, Madrid, Spain; Instituto Nacional de Investigación Biomédica en Enfermedades Raras (CIBERER), Madrid, Spain; Advanced Therapies Unit, IIS-Fundación Jimenez Diaz (IIS-FJD, UAM), 28040 Madrid, Spain. Electronic address:
Diamond-Blackfan anemia syndrome is a ribosomopathy classified among the bone marrow failure syndromes. This disease exhibits significant heterogeneity, with up to 24 genetic variants identified to date. Voit et al.
View Article and Find Full Text PDFAm J Med Genet A
December 2024
Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
Diamond Blackfan anemia (DBA) is an autosomal dominant disorder with a heterogeneous clinical presentation which may include macrocytic anemia typically presenting in the first year of life, growth retardation, and congenital malformations in 30%-50% of patients. This phenotypic variability is partially explained by genotype-phenotype correlations, with several ribosomal protein genes implicated in this disorder. Most cases are due to de novo variants, but familial occurrences highlight variable expressivity and reduced penetrance.
View Article and Find Full Text PDFOrphanet J Rare Dis
December 2024
Hematology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
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