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Common lymphoid progenitor derivation of plasmacytoid dendritic cells is mediated by Bcl11a

ABSTRACT: Plasmacytoid dendritic cells (pDC) specialize in type I interferon production to coordinate innate and adaptive immunity. We identify two pDC subsets in vivo, evaluate their genome-wide expression, and demonstrate a developmental requirement for Bcl11a to provide insight into this enigmatic cell type.

ORGANISM(S): Homo sapiens

PROVIDER: GSE99019 | GEO | 2017/11/03

SECONDARY ACCESSION(S): PRJNA387006

REPOSITORIES: GEO

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Common lymphoid progenitor derivation of plasmacytoid dendritic cells is mediated by Bcl11a

Project description:Plasmacytoid dendritic cells (pDC) specialize in type I interferon production to coordinate innate and adaptive immunity. We identify two pDC subsets in vivo, evaluate their genome-wide expression, and demonstrate a developmental requirement for Bcl11a to provide insight into this enigmatic cell type.

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Common lymphoid progenitor derivation of plasmacytoid dendritic cells is mediated by Bcl11a

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Common lymphoid progenitor derivation of plasmacytoid dendritic cells is mediated by Bcl11a

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Common lymphoid progenitor derivation of plasmacytoid dendritic cells is mediated by Bcl11a

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Dendritic cell fate is determined by BCL11A

Project description:The plasmacytoid dendritic cell (pDC) is vital to the coordinated action of innate and adaptive immunity. pDC development has not been unequivocally traced, nor has its transcriptional regulatory network been fully clarified. Here we confirm an essential requirement for the BCL11A transcription factor in fetal pDC development, and demonstrate this lineage-specific requirement in the adult organism. Furthermore, we identify BCL11A gene targets and provide a molecular mechanism for its action in pDC commitment. Embryonic germ-line deletion of Bcl11a revealed an absolute cellular, molecular, and functional absence of pDCs in fetal mice. In adults, deletion of Bcl11a in hematopoietic stem cells resulted in perturbed yet continued generation of progenitors, loss of downstream pDC and B-cell lineages, and persisting myeloid, conventional dendritic, and T-cell lineages. Challenge with virus resulted in a marked reduction of antiviral response in conditionally deleted adults. Genome-wide analyses of BCL11A DNA binding and expression revealed that BCL11A regulates transcription of E2-2 and other pDC differentiation modulators, including ID2 and MTG16. Our results identify BCL11A as an essential, lineage- specific factor that regulates pDC development, supporting a model wherein differentiation into pDCs represents a primed "default" pathway for common dendritic cell progenitors. Raji cells were infected with retroviruses containing pXY-PURO (negative control vector) or pXY-BCL11A-XS. BJAB cells were infected with retroviruses containing pXY-PURO (negative control vector) or pXY-BCL11A-XL. Two arrays measured Raji BCL11A-XS expression and two arrays measured BJAB BCL11A-XL expression.

2015-02-01 | E-GEOD-55237 | biostudies-arrayexpress

Dendritic cell fate is determined by BCL11A

2015-02-01 | GSE55237 | GEO

Dendritic Cell Fate is Determined by BCL11A

Project description:Here we confirm an essential requirement for the BCL11A transcription factor in fetal pDC development, and for the first time demonstrate this lineage specific requirement in the adult organism. Genome-wide analyses of BCL11A DNA binding and expression revealed that BCL11A regulates transcription of E2-2 and other pDC differentiation modulators including ID2 and MTG16. Our results identify BCL11A as an essential, lineage-specific factor that regulates pDC development. ChIP sequenicng was performed for a transcription factor of BCL11A in Cal1 cell line. Input was sequenced and used as a control.

2014-02-15 | E-GEOD-55043 | biostudies-arrayexpress

Dendritic Cell Fate is Determined by BCL11A

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Continuous expression of the transcription factor E2-2 maintains the cell fate of mature plasmacytoid dendritic cells

Project description:This SuperSeries is composed of the following subset Series: GSE24726: Gene expression profile of mature plasmacytoid dendritic cells (PDC) after the deletion of transcription factor E2-2 GSE24740: Binding targets of transcription factor E2-2 in human plasmacytoid dendritic cells Refer to individual Series

2010-12-21 | E-GEOD-24785 | biostudies-arrayexpress

Bcl11a controls Flt3 expression in early hematopoietic progenitors and is required for pDC development in vivo

Project description:Bcl11a is a transcription factor known to regulate lymphoid and erythroid development. Recent bioinformatic analysis of global gene expression patterns has suggested a role for Bcl11a in the development of dendritic cell (DC) lineages. We tested this hypothesis by analyzing the development of DC and other lineages in Bcl11a(-/-) mice. We show that Bcl11a is required for expression of IL-7 receptor (IL-7R) and Flt3 in early hematopoietic progenitor cells. The loss of IL-7R(+) common lymphoid progenitors accounts for previously described lymphoid defects in Bcl11a(-/-) mice. In addition, we found severely decreased numbers of plasmacytoid dendritic cells (pDCs) in Bcl11a(-/-) fetal livers and in the bone marrow of Bcl11a(-/-) fetal liver chimeras. Moreover, Bcl11a(-/-) cells show severely impaired in vitro development of Flt3L-derived pDCs and classical DCs (cDCs). In contrast, we found normal in vitro development of DCs from Bcl11a(-/-) fetal liver cells treated with GM-CSF. These results suggest that the persistent cDC development observed in Bcl11a(-/-) fetal liver chimeras reflects derivation from a Bcl11a- and Flt3-independent pathway in vivo. We compared global gene expression by microarray for donor-derived wild-type and Bcl11a(-/-) populations isolated from chimeric bone marrow to identify Bcl11a target genes that explain its role in hematopoietic progenitors. GMP and MPP populations were sorted from fetal liver chimeras and pooled by donor genotype. RNA was isolated using an RNAqueous-Micro Kit (Ambion) and submitted for amplification, labeling and hybridization. Expression values were analyzed after RMA quantile normalization using ArrayStar software (DNASTAR).

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