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Human marginal zone B cell development from early T2 progenitors [Pooled]

ABSTRACT: Human marginal zone B cell development from early T2 progenitors [Pooled]

PROVIDER: PRJNA686386 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13272475.fastq.gz	Fastqsanger.gz
	SRR13272476.fastq.gz	Fastqsanger.gz
	SRR13272477.fastq.gz	Fastqsanger.gz
	SRR13272478.fastq.gz	Fastqsanger.gz
	SRR13272479.fastq.gz	Fastqsanger.gz

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Human marginal zone B cell development from early T2 progenitors [Pooled]

Project description:B cells emerge from the bone marrow as transitional (TS) B cells that differentiate through T1, T2 and T3 stages to become naïve B cells. We have identified a bifurcation of human B cell maturation from the T1 stage forming IgMhi and IgMlo developmental trajectories. IgMhi T2 cells have higher expression of a4b7 integrin and lower expression of IL4 receptor (IL4R) compared to the IgMlo branch and are selectively recruited into gut-associated lymphoid tissue. IgMhi T2 cells also share transcriptomic features with marginal zone B cells (MZB). Lineage progression from T1 cells to MZB via an IgMhi trajectory is identified by pseudotime analysis of scRNA-sequencing data. Reduced frequency of IgMhi gut homing T2 cells is observed in severe SLE and is associated with reduction of MZB and their putative IgMhi precursors. The collapse of the gut-associated MZB maturational axis in severe SLE affirms its existence in health.

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Human marginal zone B cell development from early T2 progenitors.

Project description:B cells emerge from the bone marrow as transitional (TS) B cells that differentiate through T1, T2, and T3 stages to become naive B cells. We have identified a bifurcation of human B cell maturation from the T1 stage forming IgMhi and IgMlo developmental trajectories. IgMhi T2 cells have higher expression of α4β7 integrin and lower expression of IL-4 receptor (IL4R) compared with the IgMlo branch and are selectively recruited into gut-associated lymphoid tissue. IgMhi T2 cells also share transcriptomic features with marginal zone B cells (MZBs). Lineage progression from T1 cells to MZBs via an IgMhi trajectory is identified by pseudotime analysis of scRNA-sequencing data. Reduced frequency of IgMhi gut-homing T2 cells is observed in severe SLE and is associated with reduction of MZBs and their putative IgMhi precursors. The collapse of the gut-associated MZB maturational axis in severe SLE affirms its existence in health.

| S-EPMC7868795 | biostudies-literature

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