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Hobit confers tissue dependent programs to type 1 innate lymphoid cells

ABSTRACT: Hobit confers tissue dependent programs to type 1 innate lymphoid cells

PROVIDER: PRJNA768803 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR16229222_1.fastq.gz	Fastqsanger.gz
	SRR16229222_2.fastq.gz	Fastqsanger.gz
	SRR16229223_1.fastq.gz	Fastqsanger.gz
	SRR16229223_2.fastq.gz	Fastqsanger.gz
	SRR16229224_1.fastq.gz	Fastqsanger.gz

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Hobit confers tissue dependent programs to type 1 innate lymphoid cells

Project description:Innate responses against viral infection and other intracellular pathogens rely on immune cells that are capable of lysing infected cells and producing interferon-gamma (IFNγ). These cells encompass two major cell lineages: natural killer (NK) cells and type 1 innate lymphoid cells (ILC1s). While NK cells have been extensively characterized, identification of ILC1s and their distinction from NK cells is less clear. The transcription factor Hobit encoded by Zfp683 has been put forth as a prototypic feature of ILC1s. By analyzing Zfp683 reporter, fate-map and deficient mice, we demonstrate that the impact of Hobit on ILC1 identity, transcriptional and functional programs is tissue- and context-dependent. Thus, ILC1s functionally adapt to local stimuli and tailor their responses to the tissue niche.

2021-12-06 | GSE185346 | GEO

Hobit confers tissue-dependent programs to type 1 innate lymphoid cells.

Project description:Identification of type 1 innate lymphoid cells (ILC1s) has been problematic. The transcription factor Hobit encoded by Zfp683 has been proposed as a major driver of ILC1 programs. Using Zfp683 reporter mice, we showed that correlation of Hobit expression with ILC1s is tissue- and context-dependent. In liver and intestinal mucosa, Zfp683 expression correlated well with ILC1s; in salivary glands, Zfp683 was coexpressed with the natural killer (NK) master transcription factors Eomes and TCF1 in a unique cell population, which we call ILC1-like NK cells; during viral infection, Zfp683 was induced in conventional NK cells of spleen and liver. The impact of Zfp683 deletion on ILC1s and NK cells was also multifaceted, including a marked decrease in granzyme- and interferon-gamma (IFNγ)-producing ILC1s in the liver, slightly fewer ILC1s and more Eomes+ TCF1+ ILC1-like NK cells in salivary glands, and only reduced production of granzyme B by ILC1 in the intestinal mucosa. NK cell-mediated control of viral infection was unaffected. We conclude that Hobit has two major impacts on ILC1s: It sustains liver ILC1 numbers, while promoting ILC1 functional maturation in other tissues by controlling TCF1, Eomes, and granzyme expression.

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Project description:We identified a new type of bone marrow progenitors termed early innate lymphoid cell progenitor (EILP) using TCF-1 GFP reporter mice. We compared the transcriptomes of early innate lymphoid cell progenitors (EILP) with other early progenitors, including HSC, LMPP, CMP, CLP, ETP and DN3.

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Project description:Subtypes of innate lymphoid cells (ILC), defined by effector function and transcription factor expression, have recently been identified. In the adult, ILC derive from common lymphoid progenitors in bone marrow, although transcriptional regulation of the developmental pathways involved remains poorly defined. TOX is required for development of lymphoid tissue inducer cells, a type of ILC3 required for lymph node organogenesis, and NK cells, a type of ILC1. We show here that production of multiple ILC lineages requires TOX, as a result of TOX-dependent development of common ILC progenitors. Comparative transcriptome analysis demonstrated failure to induce various aspects of the ILC gene program in the absence of TOX, implicating this nuclear factor as a key early determinant of ILC lineage specification. TOX KO vs. wild tyype

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