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Epithelial-Immune Metabolic Codependency Fuels Inflammatory Disease

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus Homo sapiens

PROVIDER: GSE237772 | GEO | 2024/04/01

REPOSITORIES: GEO

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Epithelial-Immune Metabolic Codependency Fuels Inflammatory Disease

Project description:Epithelial-Immune Metabolic Codependency Fuels Inflammatory Disease

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Epithelial-Immune Metabolic Codependency Fuels Inflammatory Disease [Spatial Transcriptomics]

Project description:Inflammatory skin diseases are spurred by unchecked immune-epithelial circuits. However, the specific metabolic factors involved in crosstalk and their impact on the dysregulation of these two cellular components are not well understood. To better decipher the metabolic factors involved in psoriasis, we employed spatial transcriptomics (ST), a ground-breaking technology that precisely maps gene expression from histologically-intact tissue sections. These findings identify therapeutically targetable metabolic vulnerabilities in inflammatory skin disease by unveiling a remarkable coordination of metabolic processes between the epithelial and immune compartments.

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Epithelial-Immune Metabolic Codependency Fuels Inflammatory Disease [Bulk RNA-seq]

Project description:Inflammatory skin diseases are spurred by unchecked immune-epithelial circuits. Although the function of cytokine and chemokine signals in facilitating this crosstalk is well established, the specific metabolic mediators involved and their simultaneous contribution to dysregulation of these two distinct cellular compartments is unclear. Here, we employed scRNA-seq, spatial transcriptomics, and immunofluorescence across multiple disease indications to elucidate a dysfunctional epithelial state marked by Hypoxia Inducible Factor 1 alpha (HIF1⍺). Ex vivo HIF1⍺ blockade of human Psoriasis (PsO) lesions led to a reduction in pathological gene expression via modulation of glucose metabolism. Epidermal-specific loss of HIF1⍺ or its transcriptional target, glucose transporter 1, curtailed both epidermal pathology and the cutaneous immune response in murine PsO. Glycolytic metabolism sustained epithelial hyperproliferation and differentiation, while lactate, its terminal product, was crucial for sustaining Type 17 response. Notably, inhibition of lactate dehydrogenase A or the lactate transporters MCT1/4 selectively attenuated the Type 17 response, underscoring a divergent requirement for glucose and lactate in epithelial and immune cells, respectively. Collectively, these findings identify therapeutically targetable immune-epithelial circuits by unveiling a remarkable coordination of metabolic processed between the epithelial and immune compartments in inflammatory skin disease.

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