Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1219505 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR32237173.fastq.gz | Fastqsanger.gz | |||
| SRR32237174.fastq.gz | Fastqsanger.gz | |||
| SRR32237175.fastq.gz | Fastqsanger.gz | |||
| SRR32237176.fastq.gz | Fastqsanger.gz | |||
| SRR32237177.fastq.gz | Fastqsanger.gz |
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Project description:β-Thalassemia is a prevalent anemia caused by mutations in the HBB (β-globin) gene. We show that the severity of β-thalassemia in the frequently studied Hbbth3/+ mouse model is influenced by ancestral β-globin gene (Hbb) haplotypes that differ in common strains.
2024-12-18 | GSE260901 | GEO
Project description:beta-Thalassemia is a prevalent anemia caused by mutations in the HBB (beta-globin) gene. We show that the severity of beta-thalassemia in the frequently studied Hbb(th3/+) mouse model is influenced by ancestral beta-globin gene (Hbb) haplotypes that differ in common strains.
2024-12-18 | GSE260900 | GEO
Project description:β-thalassemia is a highly prevalent monogenic recessive disease caused by mutations affecting the synthesis of the adult hemoglobin β-chains. Transplantation of autologous, genetically modified hematopoietic stem/progenitor cells (HSPCs) is an attractive therapeutic option. However, current gene therapy strategies based on the use of lentiviral vectors or CRISPR/Cas9 nuclease are not equally effective in all the patients and/or raise safety concerns. Base editing (BE), a new CRISPR/Cas9 derived genome editing tool, allows the effective introduction of point mutations at precise locations within the genome without generating double strand breaks. The two β0 mutations CD39 (CAG>TAG) and IVS2-1 (G>A) are among the most common and severe β-thalassemia mutations in the Mediterranean area and Middle East. We exploited the capacity of BE to correct these mutations in HSPCs from β-thalassemia patients. We demonstrated that red blood cells in vitro derived from edited HSPCs exhibited high β-globin levels and that the delayed erythroid differentiation typically observed in β-thalassemic cell cultures was corrected by our treatment. Finally, xenotransplantation experiments showed base editing in HSCs and correction of the β-thalassemic phenotype in vivo. Overall, our study provides in vitro and in vivo proof of efficacy of a BE approach to treat patients with prevalent and severe β-thalassemia mutations.
2025-05-05 | GSE292238 | GEO
Project description:β-thalassemia is a highly prevalent monogenic recessive disease caused by mutations affecting the synthesis of the adult hemoglobin β-chains. Transplantation of autologous, genetically modified hematopoietic stem/progenitor cells (HSPCs) is an attractive therapeutic option. However, current gene therapy strategies based on the use of lentiviral vectors or CRISPR/Cas9 nuclease are not equally effective in all the patients and/or raise safety concerns. Base editing (BE), a new CRISPR/Cas9 derived genome editing tool, allows the effective introduction of point mutations at precise locations within the genome without generating double strand breaks. The two β0 mutations CD39 (CAG>TAG) and IVS2-1 (G>A) are among the most common and severe β-thalassemia mutations in the Mediterranean area and Middle East. We exploited the capacity of BE to correct these mutations in HSPCs from β-thalassemia patients. We demonstrated that red blood cells in vitro derived from edited HSPCs exhibited high β-globin levels and that the delayed erythroid differentiation typically observed in β-thalassemic cell cultures was corrected by our treatment. Finally, xenotransplantation experiments showed base editing in HSCs and correction of the β-thalassemic phenotype in vivo. Overall, our study provides in vitro and in vivo proof of efficacy of a BE approach to treat patients with prevalent and severe β-thalassemia mutations.
2025-05-05 | GSE273814 | GEO
Project description:β-thalassemia major can be caused by homozygous mutations of the HBB gene, most of the cases are inherited from parents who both have β-thalassemia minor. Herein, we show that a mosaic paternal uniparental isodisomy of chromosome 11p14.3-15.5 is associated with β-thalassemia major in a patient with β-thalassemia minor-that evolved to β-thalassemia major. From this case, we suggest that analysis of HBB gene for non-hematopoietic tissues should be performed in late-onset β-thalassemia major patients. Keywords: genomic
2007-05-22 | GSE7847 | GEO
Project description:Delta-Beta thalassemia is an unusual variant of thalassemia caused by large deletions in the β globin gene cluster involving δ- and β-globin genes. The mutations are characterized by high fetal hemoglobin with significant phenotypic diversity. Routinely used diagnostic tests targeting point mutations and small insertions, deletions of the β-globin gene are not suitable for detection of large deletion mutations. This is overcome by either direct globin chain synthesis analysis or beta-cluster gene analysis using different methods. In the current study, we use direct globin chain analysis to diagnose a family with δβ-thalassemia using high resolution mass spectrometry.
2024-08-09 | PXD044775 | Pride
Project description:Background: The thalassemias are highly diverse at both the molecular and clinical levels. Many of the HBB mutations that result in β-thalassemia are missense mutations in the coding region of the β-globin gene, but a few cause alternative splicing, and interfere with normal processing of the β-globin transcripts. Transcriptome profiling in individuals affected with β-thalassemia, especially in individuals who carry novel mutations in the HBB, may improve our understanding of the heterogeneity and molecular mechanisms of the disease. Methods: Members of a family with a daughter affected with thalassemia intermedia, although her mother was not clinically affected, were examined for physical characteristics, hematological parameters and β-globin gene sequences. We also characterized genome-wide gene expression in the family using RT-qPCR and high-throughput RNA-sequencing mRNA expression profiling of blood. Results: Clinical findings, hematological indices, DNA and RNA sequence analysis of individuals with β-thalassemia, including the description of a novel mutation in the β-globin gene, which introduces a cryptic donor splice site. More than 300 genes are differentially expressed in β-thalassemic blood with many of the DEGs involved in pathways relevant to the clinical management of β-thalassemia. β-thalassemia shows important similarities and differences with sickle cell disease at the transcriptome level. Conclusions: We described the down-regulation of the β-globin gene in β-thalassemia by RNA-sequencing analysis using a sample from an affected individual and her mother, who have a novel mutation in the HBB that creates a cryptic donor splice site. The daughter has a typical β-thalassemia allele as well, and an unexpectedly severe phenotype. The DEGs are enriched in pathways that are directly or indirectly related to β-thalassemia such as hemopoiesis, heme biosynthesis, response to oxidative stress, inflammatory responses, immune responses, control of circadian rhythm, apoptosis, and other cellular activities. We compare our findings with published results of RNA-Sequencing analysis of sickle cell disease (SCD) and erythroblasts from a KLF1-null neonate with hydrops fetalis, and recognize similarities and differences in their transcriptional expression patterns.
2019-03-09 | GSE96060 | GEO
Project description:To explore the role of circRNAs in the regulation of β-thalassemia and provide new evidence and targets for the treatment of β-thalassemia, circRNAs expression profiling was analyzed from patients with β-thalassemia intermedia and major.
2023-08-20 | GSE241141 | GEO
Project description:To explore the relationship between miRNAs expression and pediatric patients with β-thalassemia, we analyzed abnormal expressed miRNAs in peripheral blood of pediatric β-thalassemia by miRNA sequencing.
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Project description:β-thalassemia cell lines were generated via CRISPR-Cas9 genome editing of Bristol Erythroid Line Adult (BEL-A) and differentiated to the basophilic and polychromatic erythroid cell stage. TMT comparative proteomics was then performed on stage matched WT and β-thalassemia cells isolated by FACS.
2023-10-24 | PXD044730 | Pride