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ATAC-seq analyses to study chromatin state after overexpression of BAZ2B in lineage-committed human hematopoietic progenitors

ABSTRACT: ATAC-seq analyses to study chromatin state after overexpression of BAZ2B in lineage-committed human hematopoietic progenitors

PROVIDER: PRJNA636674 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11906965_1.fastq.gz	Fastqsanger.gz
	SRR11906965_2.fastq.gz	Fastqsanger.gz
	SRR11906966_1.fastq.gz	Fastqsanger.gz
	SRR11906966_2.fastq.gz	Fastqsanger.gz
	SRR11906967_1.fastq.gz	Fastqsanger.gz

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Project description:The advent of recent cutting-edge technologies has allowed the discovery and characterization of novel hematopoietic progenitors, including SSCloCD66b+CD15+CD11b-CD49dhiproNeu1s and SSChiCD66b+CD15+CD11b-CD49dintproNeus2s, CD66b+CD15+CD11b+CD49d+CD101-preNeus and Lin-CD66b+CD117+CD71+eNePs along human neutropoiesis process. In this research field, we recently identified CD66b-CD38+CD64dimCD115-, CD34+ and CD34dim/-cells exclusively committed to the neutrophil lineage [which we renamed as CD34+ and CD34dim/- neutrophil-committed progenitors (NCPs)], representing the earliest neutrophil precursors identifiable and sorted by flow cytometry. Moreover, based on their differential CD34 and CD45RA expression, we could identify four populations of NCPs, namely: CD34+CD45RA-/NCP1s, CD34+CD45RA+/NCP2s, CD34dim/-CD45RA+/NCP3s and CD34dim/-CD45RA-/NCP4s. This said, a very recent study by Ikeda and coworkers (PMID: 36862552) reported that neutrophil precursors termed either neutrophil progenitors (NePs) or “early neutrophil-committed progenitors” would generate immunosuppressive neutrophil-like CXCR1+CD14+CD16-monocytes. Hence, presuming that NePs/alias “early neutrophil-committed progenitors” correspond to NCPs, the selective neutrophil-commitment that we attributed to NCPs is contradicted by Ikeda and coworkers’ paper. In this study, by performing a more analytical reevaluation at the phenotypic and molecular levels of the cells generated by NCP2s and NCP4s (selected as representatives of NCPs), we categorically exclude that NCPs generate neutrophil-like CXCR1+CD14+CD16-monocytes. Rather, we provide substantial evidence indicating that the cells generated by NePs/alias “early neutrophil-committed progenitors” are neutrophilic cells at different stage of maturation, displaying moderate levels of CD14, instead of neutrophil-like CXCR1+CD14+CD16-monocytes as pointed by Ikeda and coworkers. Hence, the conclusion that NePs/alias “early neutrophil-committed progenitors” aberrantly differentiate into neutrophil-like monocytes derives, in our opinion, from data misinterpretation

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ATAC-seq analyses to study chromatin state after overexpression of BAZ2B in lineage-committed human hematopoietic progenitors

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