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Lipid signalling enforces functional specialization of Treg cells in tumours [scRNA-seq EAE]

ABSTRACT: Lipid signalling enforces functional specialization of Treg cells in tumours [scRNA-seq EAE]

PROVIDER: PRJNA699485 | ENA |

REPOSITORIES: ENA

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Lipid signalling enforces functional specialization of Treg cells in tumours [scRNA-seq EAE]

Project description:Metabolic reprogramming enforces Treg cell functional specialization in tumors by coordinating fatty acid biosynthesis and inhibitory receptor signaling pathways. These findings point to new avenues to selectively targeting intratumoral Treg cells for cancer therapy.

2021-02-24 | GSE166159 | GEO

Lipid signalling enforces functional specialization of Treg cells in tumours

Project description:Lipid signalling enforces functional specialization of Treg cells in tumours

| PRJNA693830 | ENA

Lipid signalling enforces functional specialization of Treg cells in tumours [microarray #2]

2021-02-24 | GSE165257 | GEO

Lipid signalling enforces functional specialization of Treg cells in tumours [microarray #1]

2021-02-24 | GSE149573 | GEO

Lipid signalling enforces functional specialization of Treg cells in tumours [scRNA-seq]

2021-02-24 | GSE165258 | GEO

Lipid signalling enforces functional specialization of Treg cells in tumours [microarray #2]

Project description:Lipid signalling enforces functional specialization of Treg cells in tumours [microarray #2]

| PRJNA693832 | ENA

Lipid signalling enforces functional specialization of Treg cells in tumours [microarray #1]

Project description:Lipid signalling enforces functional specialization of Treg cells in tumours [microarray #1]

| PRJNA629293 | ENA

Lipid signalling enforces functional specialization of Treg cells in tumours [scRNA-seq]

Project description:Lipid signalling enforces functional specialization of Treg cells in tumours [scRNA-seq]

| PRJNA693833 | ENA

Lipid signalling enforces functional specialization of Treg cells in tumours

Project description:This SuperSeries is composed of the SubSeries listed below.

2021-02-24 | GSE165259 | GEO

Lipid signalling enforces functional specialization of T<sub>reg</sub> cells in tumours.

Project description:Regulatory T cells (Treg cells) are essential for immune tolerance1, but also drive immunosuppression in the tumour microenvironment2. Therapeutic targeting of Treg cells in cancer will therefore require the identification of context-specific mechanisms that affect their function. Here we show that inhibiting lipid synthesis and metabolic signalling that are dependent on sterol-regulatory-element-binding proteins (SREBPs) in Treg cells unleashes effective antitumour immune responses without autoimmune toxicity. We find that the activity of SREBPs is upregulated in intratumoral Treg cells. Moreover, deletion of SREBP-cleavage-activating protein (SCAP)-a factor required for SREBP activity-in these cells inhibits tumour growth and boosts immunotherapy that is triggered by targeting the immune-checkpoint protein PD-1. These effects of SCAP deletion are associated with uncontrolled production of interferon-γ and impaired function of intratumoral Treg cells. Mechanistically, signalling through SCAP and SREBPs coordinates cellular programs for lipid synthesis and inhibitory receptor signalling in these cells. First, de novo fatty-acid synthesis mediated by fatty-acid synthase (FASN) contributes to functional maturation of Treg cells, and loss of FASN from Treg cells inhibits tumour growth. Second, Treg cells in tumours show enhanced expression of the PD-1 gene, through a process that depends on SREBP activity and signals via mevalonate metabolism to protein geranylgeranylation. Blocking PD-1 or SREBP signalling results in dysregulated activation of phosphatidylinositol-3-kinase in intratumoral Treg cells. Our findings show that metabolic reprogramming enforces the functional specialization of Treg cells in tumours, pointing to new ways of targeting these cells for cancer therapy.

| S-EPMC8168716 | biostudies-literature

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