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Regeneration of immunocompetent B lymphopoiesis from pluripotent stem cells guided by transcription factors

ABSTRACT: Regeneration of immunocompetent B lymphopoiesis from pluripotent stem cells guided by transcription factors

PROVIDER: PRJNA747816 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15183781_1.fastq.gz	Fastqsanger.gz
	SRR15183781_2.fastq.gz	Fastqsanger.gz
	SRR15183782_1.fastq.gz	Fastqsanger.gz
	SRR15183782_2.fastq.gz	Fastqsanger.gz
	SRR15183783_1.fastq.gz	Fastqsanger.gz

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Regeneration of immunocompetent B lymphopoiesis from pluripotent stem cells guided by transcription factors

Project description:Regeneration of immunocompetent B lymphopoiesis from pluripotent stem cells guided by transcription factors

| PRJNA747815 | ENA

Regeneration of immunocompetent B lymphopoiesis from pluripotent stem cells guided by transcription factors

Project description:We identified that the coordinated expression of exogenous transcription factors(Lhx2, Hoxa9, and Runx1), efficiently guides PSC-derived hematopoietic progenitors (iHPC) preferentially towards B cell lineage commitment, which successfully regenerate B lymphopoiesis in B-cell deficient animals. Of note, the abundancy of in vivo lymphopoiesis includes pro/pre-B progenitors, immature B cells, and all subsets of mature B1a, B1b, FO B and MZ B reconstitution in vivo. We performed single-cell RNA-Seq using the sorted GFP+CD45+ Lin- cells from the bone marrow of recipients at day 7.5 after iHPC transplantation.

2021-12-16 | GSE180319 | GEO

Regeneration of immunocompetent B lymphopoiesis from pluripotent stem cells guided by transcription factors

Project description:We identified that the coordinated expression of exogenous transcription factors efficiently guides PSC-derived hematopoietic progenitors (iHPC) preferentially towards B cell lineage commitment, which successfully regenerate B lymphopoiesis in B-cell deficient animals. Of note, the abundancy of in vivo lymphopoiesis includes pro/pre-B progenitors, immature B cells, and all subsets of mature B1a, B1b, FO B and MZ B reconstitution in vivo. We performed BCR deep sequencing using the sorted naive follicular B cells from the spleen of one recipient at week 4 after iHPC transplantation and one C57BL/6 mouse as control.

2021-12-16 | GSE180318 | GEO

Regeneration of immunocompetent B lymphopoiesis from pluripotent stem cells guided by transcription factors.

Project description:Regeneration of functional B lymphopoiesis from pluripotent stem cells (PSCs) is challenging, and reliable methods have not been developed. Here, we unveiled the guiding role of three essential factors, Lhx2, Hoxa9, and Runx1, the simultaneous expression of which preferentially drives B lineage fate commitment and in vivo B lymphopoiesis using PSCs as a cell source. In the presence of Lhx2, Hoxa9, and Runx1 expression, PSC-derived induced hematopoietic progenitors (iHPCs) immediately gave rise to pro/pre-B cells in recipient bone marrow, which were able to further differentiate into entire B cell lineages, including innate B-1a, B-1b, and marginal zone B cells, as well as adaptive follicular B cells. In particular, the regenerative B cells produced adaptive humoral immune responses, sustained antigen-specific antibody production, and formed immune memory in response to antigen challenges. The regenerative B cells showed natural B cell development patterns of immunoglobulin chain switching and hypermutation via cross-talk with host T follicular helper cells, which eventually formed T cell-dependent humoral responses. This study exhibits de novo evidence that B lymphopoiesis can be regenerated from PSCs via an HSC-independent approach, which provides insights into treating B cell-related deficiencies using PSCs as an unlimited cell resource.

| S-EPMC8975874 | biostudies-literature

Guiding T lymphopoiesis from pluripotent stem cells by defined transcription factors [iR_iHEC]

Project description:Guiding T lymphopoiesis from pluripotent stem cells by defined transcription factors [iR_iHEC]

| PRJNA531384 | ENA

Guiding T lymphopoiesis from pluripotent stem cells by defined transcription factors.

Project description:Achievement of immunocompetent and therapeutic T lymphopoiesis from pluripotent stem cells (PSCs) is a central aim in T cell regenerative medicine. To date, preferentially reconstituting T lymphopoiesis in vivo from PSCs remains a practical challenge. Here we documented that synergistic and transient expression of Runx1 and Hoxa9 restricted in the time window of endothelial-to-hematopoietic transition and hematopoietic maturation stages in a PSC differentiation scheme (iR9-PSC) in vitro induced preferential generation of engraftable hematopoietic progenitors capable of homing to thymus and developing into mature T cells in primary and secondary immunodeficient recipients. Single-cell transcriptome and functional analyses illustrated the cellular trajectory of T lineage induction from PSCs, unveiling the T-lineage specification determined at as early as hemogenic endothelial cell stage and identifying the bona fide pre-thymic progenitors. The induced T cells distributed normally in central and peripheral lymphoid organs and exhibited abundant TCRαβ repertoire. The regenerative T lymphopoiesis restored immune surveillance in immunodeficient mice. Furthermore, gene-edited iR9-PSCs produced tumor-specific T cells in vivo that effectively eradicated tumor cells. This study provides insight into universal generation of functional and therapeutic T cells from the unlimited and editable PSC source.

| S-EPMC6951346 | biostudies-literature

Guiding T lymphopoiesis from pluripotent stem cells by defined transcription factors [single hematopoietic cells (iHEC)]

Project description:Guiding T lymphopoiesis from pluripotent stem cells by defined transcription factors [single hematopoietic cells (iHEC)]

| PRJNA497195 | ENA

UBXN3B Is Crucial for B Lymphopoiesis

Project description:UBXN3B Is Crucial for B Lymphopoiesis

| PRJNA1100615 | ENA

Human arterial endothelial cells from pluripotent stem cells for in vitro hematopoiesis and lymphopoiesis

Project description:Arterial endothelial cells (AECs) are the founder cell for intraembryonic haematopoiesis. Here, we report a method for the efficient generation of human haemogenic DLL4+ AECs from pluripotent stem cells (PSC). Time-series single cell RNA-sequencing revealed the dynamic evolution of haematopoiesis and lymphopoiesis from endothelial stage, generating cell types with counterparts present in early human embryos. Our study describes an efficient method for producing lymphoid cells and provides insights into their endothelial and haematopoietic ontogeny, paving a new path to investigations of the human blood system.

2024-08-01 | GSE217705 | GEO

BRWD1 orchestrates epigenetic landscape of late B lymphopoiesis

Project description:Transcription factor (TF) networks determine cell fate in hematopoiesis. However, how TFs cooperate with other regulatory mechanisms to instruct transcription remains poorly understood. We demonstrate in small pre-B cells, that the lineage restricted epigenetic reader BRWD1 closes early development enhancers and opens the enhancers of late B lymphopoiesis to TF binding. BRWD1 differentially regulated over 7000 genes including repressing proliferative and inducing differentiation programs. However, BRWD1 did not regulate expression of transcription factors required for B lymphopoiesis. Hypogammaglobulinemia patients with BRWD1 mutations had B cell transcriptional profiles and enhancer landscapes similar to those observed in Brwd1-/- mice. These data indicate that in both mice and humans, BRWD1 is a master orchestrator of enhancer accessibility that cooperates with TF networks to drive late B cell development.

2018-08-11 | GSE103057 | GEO

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