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Analysis of lung transcriptomic changes following inhibition of LTβR-signalling in cigarette smoke exposed mice

ABSTRACT: Analysis of lung transcriptomic changes following inhibition of LTβR-signalling in cigarette smoke exposed mice

PROVIDER: PRJNA636811 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR11908858_1.fastq.gz	Fastqsanger.gz
	SRR11908858_2.fastq.gz	Fastqsanger.gz
	SRR11908859_1.fastq.gz	Fastqsanger.gz
	SRR11908859_2.fastq.gz	Fastqsanger.gz
	SRR11908860_1.fastq.gz	Fastqsanger.gz

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Analysis of lung transcriptomic changes following inhibition of LTβR-signalling in cigarette smoke exposed mice

Project description:How LTβR-signalling drives chronic tissue damage particularly in the lung, which mechanisms regulate this process, and whether LTβR-blockade might be of therapeutic value has remained unclear. To study the mechanisms underlying LTβR-inhibition, a transcriptional analysis was performed on lung tissue from B6 mice exposed to cigarette smoke for 6 months and treated therapeutically with LTβR-Ig from 4 to 6 months compared to mice exposed to cigarette smoke for 6 months and treated with control Ig from 4 to 6 months and filtered air control. Single-cell RNA-Seq identified 24 distinct cell populations across >20,000 cells in lungs with distinct changes occurring upon cigarette smoke exposure and LTβR-Ig treatment.

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NHBE exposed to cigarette smoke

Project description:normal human bronchial epithelial cultures from two cultures in parallel exposed to cigarette smoke (CS) or air (mock) at timepoints 4 hours and 24 hours. Keywords = cigarette smoke Keywords = microarray Keywords = bronchial cell Keywords = tobacco Keywords: time-course

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Time course of NHBE cells exposed to whole cigarette smoke

Project description:Gene expression patterns were assessed in normal human bronchial epithelial (NHBE) cells exposed to cigarette smoke from a reference cigarette (2R4F, University of Kentucky) and a typical American brand of "light" cigarettes ("Lights") in order to develop a better understanding of the genomic impact of tobacco exposure, which can ultimately define biomarkers that discriminate tobacco-related effects and outcomes in a clinical setting. NHBE cells were treated with whole cigarette smoke for 15 minutes and alterations to the transcriptome assessed at 2, 4, 8 and 24 hours post-exposure using high-density oligonucleotide microarrays. Keywords: time course, cigarette smoke exposure

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Project description:Lymphotoxin β-receptor-signalling orchestrates lymphoid neogenesis and subsequent tertiary lymphoid structures (TLS) associated with severe chronic inflammatory diseases spanning multiple organ systems. How LTβR-signalling drives chronic tissue damage particularly in the lung, which mechanism(s) regulate this process, and whether LTβR-blockade might be of therapeutic value has remained unclear. Here we demonstrate increased lymphotoxin expression of LTbR-ligands on myeloid and adaptive and innate immune-cells, enhanced non-canonical NF-κB signalling and enrichment of LTβR-target gene expression in epithelial cells of lungs from patients and mice with smoking-associated chronic obstructive pulmonary disease (COPD). Accordingly, Therapeutic inhibition of LTβR-signalling in young and aged mice with COPD disrupted TLS, reverted lung tissue destruction, airway-fibrosis and systemic muscle wasting. Mechanistically, we identified that LTβR-signalling blockade leads to diminished cell-death, concomitantly reactivated endogenous Wnt/β-catenin-signalling in alveolar epithelial cells and reduced TGFβ-signalling in airways. These findings highlight LTβR as a viable therapeutic target against TLS induced tissue damage that translates into novel anti-inflammatory, regenerative strategies to treat COPD.

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