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Transcriptional and phenotypic profile of lung-resident memory B cells induced by influenza infection

ABSTRACT: Transcriptional and phenotypic profile of lung-resident memory B cells induced by influenza infection

PROVIDER: PRJNA668738 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12809864.fastq.gz	Fastqsanger.gz
	SRR12809865.fastq.gz	Fastqsanger.gz
	SRR12809866.fastq.gz	Fastqsanger.gz
	SRR12809867.fastq.gz	Fastqsanger.gz
	SRR12809868.fastq.gz	Fastqsanger.gz

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Transcriptional and phenotypic profile of lung-resident memory B cells induced by influenza infection

Project description:Long-lived, tissue-resident memory B cells (BRM) are established in the lungs of mice after pulmonary influenza infection. Influenza-specific BRM were localised within inducible bronchus-associated lymphoid tissues (iBALT) and displayed phenotypic and transcriptional signatures reminiscent of tissue-resident T cells, distinct from classical memory B cells in the blood or secondary lymphoid sites.

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Transcriptional control of influenza-specific CD4+ tissue-resident memory T cell generation

Project description:Tissue-resident memory T cells (TRM) are a non-circulating subset of memory that are maintained at sites of pathogen entry and mediate optimal protection against reinfection. Lung TRM can be generated in response to respiratory infection or vaccination, however, the molecular pathways involved in CD4+TRM establishment have not been defined. Here, we performed transcriptional profiling of influenza-specific lung CD4+TRM following influenza infection to identify pathways implicated in CD4+TRM generation and homeostasis. Lung CD4+TRM displayed a unique transcriptional profile distinct from spleen memory, including up-regulation of a gene network induced by the transcription factor IRF4, a known regulator of effector T cell differentiation.

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Spatial, temporal and molecular dynamics of swine influenza virus-specific CD8 tissue resident memory cells

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Expression data from circulating and lung tissue resident memory CD4 T cell responding towards infuenza A virus infection

Project description:How tissue resident memory CD4 T cell differ from circulating memory CD4 T cells and how such differences impact functional recall responses to pathogens is unknown. We used microarrays to detail the global programme of gene expression underlying differences between sort purified circulating memory CD4 T cells from the lung and spleen, which are labelled with flourescent antibody following intravenous administration, and lung tissue resident memory CD4 T cells, which are not labelled with flourescent antibody following intravenous administration, on day 28 post influenza infection.

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Skin Resident Memory CD4+ T Cells Enhance Protection Against Leishmania Major Infection

Project description:Leishmaniasis causes a significant disease burden worldwide. Although Leishmania-infected patients become refractory to reinfection following disease resolution, effective immune protection has not yet been achieved by human vaccines. While circulating Leishmania-specific T cells are known to play a critical role in immunity, the role of memory T cells present in peripheral tissues has not been explored. Here, we identify a population of skin-resident Leishmania-specific memory CD4+ T cells. These cells produce IFNγ, and remain resident in the skin when transplanted by skin graft onto naïve mice. They function to recruit circulating T cells to the skin in a CXCR3 dependent manner, resulting in better control of the parasites. Our findings are the first to demonstrate that CD4+ TRM cells form in response to a parasitic infection, and indicate that optimal protective immunity to Leishmania, and thus the success of a vaccine, may depend on generating both circulating and skin-resident memory T cells. Two conditions were analyzed. For each condition, four mice were used, resulting in eight samples in total.

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Secondary influenza challenge triggers lung resident memory B cell mobilization and rapid relocation for antibody secretion at infected loci

Project description:Resident memory B (BRM) cells develop and persist in the lungs of influenza infected mice and humans but their contribution to recall responses following rechallenge has not been defined. We used scRNA-seq to identify early changes in lung immune cell composition and gene expression following secondary influenza infection and tested the effect of alveolar macrophage depletion (using intranasally delivered CLL). We found an alveolar macrophage dependent upregulation of IFNG-associated pathways after influenza rechallenge, that included increased expression of CXCL9, CXCL10 and CCL5 in myeloid cells.

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Project description:Resident memory T (TRM) cells in the lung are vital for heterologous protection against influenza A virus (IAV). Environmental factors are necessary to establish lung TRM, however the role of T cell intrinsic factors like T cell receptor (TCR) signal strength have not been elucidated. Here we investigated the impact of TCR signal strength on the generation and maintenance of lung TRM cells after IAV infection. We inserted high and low affinity OT-I epitopes into IAV and infected mice after transfer of OT-I T cells. We uncovered a bias in TRM formation in the lung elicited by lower affinity TCR stimulation. TCR affinity did not impact the overall phenotype or long-term maintenance of lung TRM cells. Overall, these findings demonstrate that TRM formation is negatively correlated with increased TCR signal strength. Lower affinity cells may have an advantage in forming TRM to ensure diversity in the antigen-specific repertoire in tissues.

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Development pathway for skin resident memory CD103+CD8+ T cells

Project description:Tissue resident memory T cells (TRM) provide superior protection against infection localised to extra-lymphoid compartments in the body. Here we show that CD103+CD8+ TRM cells develop in skin from killer cell lectin-like receptor (KLR)G1-negative precursors that selectively infiltrate the epithelial layer. In the skin, a combination of chemokine-guided epithelial entry, local interleukin (IL)-15 and transforming growth factor (TGF)-Î² signalling is required for formation and survival of these long-lived memory cells. Importantly, TRM differentiation results in the gradual acquisition of a unique transcriptional profile that differs from that expressed by memory cells in the circulation and other types of skin-resident intra-epithelial T cells, such as the dendritic epidermal T cells (DETC). We provide a comprehensive molecular and developmental framework for the local differentiation of a distinct type of peripheral memory T cell that contributes to an important first-line of immune defence in barrier tissues such as skin and mucosa. 24 samples were analyzed: 3 replicates of memory gB-T CD8+. CD103+ T cells isolated from the skin of C57/BL6 mice on day 30 p.i. with HSV KOS. 3 replicates of memory P14 CD8+ T cells isolated from gut of mice on day 60 p.i. with LCMV Armstrong. 3 replicates of memory gB-T CD8+ T cells from the lung of mice on day 30 p.i. with influenza WSN. 3 replicates of memory CD62L high CD8+ T cells from the spleen of mice on day 30 p.i. with HSV KOS. 3 replicates of memory CD62L low CD8+ T cells from the spleen of mice of day 30 p.i. with HSV KOS. 3 replicates of Î³Î´-DETC isolated from the skin of C57/BL6 mice on day 30 p.i. with HSV KOS. 3 replicates of Î±Î²-DETC from naive TCRÎ´-/- mice; and 3 replicates of naive gB-T CD8+ T cells from the spleen of naive gB-T transgenic mice.

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Transcriptional control of influenza-specific CD4+ tissue-resident memory T cell generation

Project description:Transcriptional control of influenza-specific CD4+ tissue-resident memory T cell generation

| PRJNA565358 | ENA

RNA-seq data of lung resident T-cells from mice following house dust mite (HDM) sensitisation and subsequent influenza virus challenge

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2023-01-30 | E-MTAB-11116 | biostudies-arrayexpress

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