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Cul5 regulates CD4+ T cell fate choice and allergic inflammation [RNA-seq]

ABSTRACT: Cul5 regulates CD4+ T cell fate choice and allergic inflammation [RNA-seq]

PROVIDER: PRJNA763975 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15926843.fastq.gz	Fastqsanger.gz
	SRR15926844.fastq.gz	Fastqsanger.gz
	SRR15926845.fastq.gz	Fastqsanger.gz
	SRR15926846.fastq.gz	Fastqsanger.gz
	SRR15926847.fastq.gz	Fastqsanger.gz

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Cul5 regulates CD4+ T cell fate choice and allergic inflammation

Project description:Antigen encounter directs CD4+ T cells to differentiate into T-helper or -regulatory cells. This process focuses the immune response on the invading pathogen and limits tissue damage. Mechanisms that govern -helper versus -regulatory fate remain poorly understood. Here, we show that the E3 ubiquitin ligase Cul5 determines fate selection in CD4+ T cells by regulating IL-4 receptor signaling. Mice lacking Cul5 in T cells developed enhanced Th2 and Th9 inflammation and pathophysiological features of atopic asthma upon allergen exposure. Following T cell activation, Cul5 formed a complex with CIS and pJak1. Loss of Cul5 function resulted in reduced ubiquitylation and increased stability of pJak1, elevated STAT6 activity, and a reduced threshold for IL-4 receptor signaling. In keeping with this, Cul5-deficient T cells deviated from Treg to Th9 differentiation in low IL-4 conditions. These data support that Cul5 promotes a tolerogenic T cell fate choice and reduces susceptibility to allergic asthma.

2022-06-09 | PXD028492 | Pride

Cul5 regulates CD4+ T cell fate choice and allergic inflammation [RNA-seq]

Project description:Antigen encounter directs CD4+ T cells to differentiate into T-helper or -regulatory cells. This process focuses the immune response on the invading pathogen and limits tissue damage. Mechanisms that govern -helper versus -regulatory fate remain poorly understood. Here, we show that the E3 ubiquitin ligase Cul5 determines fate selection in CD4+ T cells by regulating IL-4 receptor signaling. Mice lacking Cul5 in T cells developed enhanced Th2 and Th9 inflammation and pathophysiological features of atopic asthma upon allergen exposure. Following T cell activation, Cul5 formed a complex with CIS and pJak1. Loss of Cul5 function resulted in reduced ubiquitylation and increased stability of pJak1, elevated STAT6 activity, and a reduced threshold for IL-4 receptor signaling. In accordance with this, Cul5-deficient T cells deviated from Treg to Th9 differentiation in low IL-4 conditions. These data support that Cul5 promotes a tolerogenic T cell fate choice and reduces susceptibility to allergic asthma.

2022-01-24 | GSE184321 | GEO

Mgl2+ cDC2s coordinate allergic airway type 2 but not type 17 inflammation against fungal spores

Project description:Fungal spores, abundant in the environment, are a major cause of asthma. But the precise host response that triggers fungal allergic airway inflammation remains unclear. We found that CD11c+ DCs and CD4+ T cells are essential for development of airway inflammation in mice when repeatedly exposed to inhaled spores. To delinate which DC subsets are mediating fungal allergic inflammation we undertook single cell RNAseq of DCs isolated from the lungs of mice exposed to fungal spores. This identified precise subsets altered upon spore exposure and following targeted removal identified distinct DC subsets (Mgl2+ cDC2s) that are essential for fungal allergic airway inflammation.

2024-12-04 | E-MTAB-13740 | biostudies-arrayexpress

The ubiquitin ligase Cul5 regulates CD4<sup>+</sup> T cell fate choice and allergic inflammation.

Project description:Antigen encounter directs CD4+ T cells to differentiate into T helper or regulatory cells. This process focuses the immune response on the invading pathogen and limits tissue damage. Mechanisms that govern T helper cell versus T regulatory cell fate remain poorly understood. Here, we show that the E3 ubiquitin ligase Cul5 determines fate selection in CD4+ T cells by regulating IL-4 receptor signaling. Mice lacking Cul5 in T cells develop Th2 and Th9 inflammation and show pathophysiological features of atopic asthma. Following T cell activation, Cul5 forms a complex with CIS and pJak1. Cul5 deletion reduces ubiquitination and subsequent degradation of pJak1, leading to an increase in pJak1 and pSTAT6 levels and reducing the threshold of IL-4 receptor signaling. As a consequence, Cul5 deficient CD4+ T cells deviate from Treg to Th9 differentiation in low IL-4 conditions. These data support the notion that Cul5 promotes a tolerogenic T cell fate choice and reduces susceptibility to allergic asthma.

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Expression and MeDIP microarray data from IL13-induced allergic airway inflammation of mice lungs

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A regulatory CD9+ B cell subset controls HDM-induced allergic airway inflammation

Project description:Background: A specific subset of regulatory IL-10 producing B cells has been extensively studied in autoimmune and inflammatory pathologies. These cells are able to constrain exacerbated inflammation by inhibiting T cell mediated responses and maturation of antigen presenting cells. In allergic diseases, observations that increase of regulatory B cells is necessary for allergen tolerance suggest that development of allergic asthma would be associated with a defect in the regulatory B cells compartment. Objective: We sought to (i) characterize regulatory IL-10+ regulatory B cell subset in Balb/c mice by microarray and flow cytometry and (ii) investigate their regulatory capacity in vivo in a house dust mite model of allergic asthma. Results: We identified an IL-10 producing B cells subset able to control T cell proliferation in vitro in both control and asthmatic mice. This subset is decreased in allergic mice. IL-10+ Breg cells express high levels of CD9 and upregulate CD70 and CD73 after activation. Expression of CD9 allows identifying more than 50% of Bregs. Interestingly CD9+ B cells inhibit TH2-TH17 allergic airway inflammation in vivo after adoptive transfer in an IL-10 dependent manner. Conclusions: Herein, we demonstrate that induction of allergic asthma dampens the generation of Bregs contributing to exacerbated airway inflammation. We identified a distinct CD9+ Breg-cell population decreased in lung of HDM mice and able to control asthma and allergic airway inflammation by producing IL-10 after adoptive transfer. This study points B cells as an interesting therapeutic target in allergic asthma. IL-10+ B cells (n=3) and 3 IL-10- B cells (n=3) in control mice + IL-10+ B cells (n=3) and 3 IL-10- B cells (n=3) from asthmatic allergic (HDM) mice

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MARCH1 controls an exhaustion-like program of effector CD4+ T cells promoting allergic airway inflammation

Project description:Persistent antigenic signalling leads to T cell exhaustion, a dysfunctional state arising in many chronic infections and cancers. Little is known concerning mechanisms limiting exhaustion in immune stimulatory diseases such as asthma. We report that membrane-associated RING-CH1 (MARCH1), the ubiquitin ligase that mediates surface turnover of MHCII and CD86 in professional APCs, plays an essential role in restraining exhaustion of effector CD4+ T cells in a mouse model of asthma. Mice lacking MARCH1 or the ubiquitin acceptor sites of MHCII and CD86 exhibited increased MHCII and CD86 surface expression on lung APCs, and this increase promoted enhanced expression of immune inhibitory receptors by effector CD4+ T cells and inhibited their proliferation. Remarkably, ablation of MARCH1 in mice with established asthma reduced airway infiltration of eosinophils and Th2 cells. Thus, MARCH1 controls exhaustion of effector CD4+ T cells during allergic airway inflammation and may serve as a therapeutic target for asthma.

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MARCH1 controls an exhaustion-like program of effector CD4+ T cells promoting allergic airway inflammation

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