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IL-27 in vaccine elicited cellular immunity

ABSTRACT: IL-27 in vaccine elicited cellular immunity

PROVIDER: PRJNA449508 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6977550.fastq.gz	Fastqsanger.gz
	SRR6977551.fastq.gz	Fastqsanger.gz
	SRR6977552.fastq.gz	Fastqsanger.gz
	SRR6977553.fastq.gz	Fastqsanger.gz
	SRR6977554.fastq.gz	Fastqsanger.gz

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IL-27 in vaccine elicited cellular immunity

Project description:5000 congenically marked (CD45.1) WT or IL-27R-/- OT1 T cells were transferred into WT B6 hosts (CD45.2). One day later, the mice were immunized with ovalbumin (100 µg), PolyIC (40 µg) and anti-CD40 antibody (FGK4.5, 40 µg). 3 days after immunizayion, spleens were harvested and the OT1 T cells isolated by flow sorting based on CD45.1 expression. Each sample is the result of pooling T cells from 3 individual mice. RNA was isolated from the sorted cells and RNAseq performed.

2018-09-01 | GSE112920 | GEO

Single-cell comparison of day 7 vaccine, listeria and vaccinia virus elicited CD8 T cells

Project description:Protection from pathogens relies on both humoral (antibody-mediated) and cellular (T cell-mediated) responses. While infections robustly elicit both of these types of immunity, currently approved vaccine adjuvants largely fail to induce significant T cell responses. However, recent work by our lab and others suggests that the mechanisms governing vaccine-elicited T cells (Tvac) may be substantially different than those governing infection-elicited T cells (Tinf). We have recently demonstrated that optimal subunit vaccine-elicited T cell responses rely on different cytokine signals (IL-27 and 15) and metabolic function (oxidative phosphorylation vs. aerobic glycolysis) leading to phenotypically and functionally different outcomes (memory vs. effector). Our goal was to investigate the transcriptional programming that promotes Tvac formation. Using a single-cell RNA-seq approach, we compared Tvac and Tinf at day 7 post-immunization or infectious challenge to determine the heterogenity of CD8 T cell responses at this peak timepoint.

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Project description:Protection from pathogens relies on both humoral (antibody-mediated) and cellular (T cell-mediated) responses. While infections robustly elicit both of these types of immunity, currently approved vaccine adjuvants largely fail to induce significant T cell responses. However, recent work by our lab and others suggests that the mechanisms governing vaccine-elicited T cells (Tvac) may be substantially different than those governing infection-elicited T cells (Tinf). We have recently demonstrated that optimal subunit vaccine-elicited T cell responses rely on different cytokine signals (IL-27 and 15) and metabolic function (oxidative phosphorylation vs. aerobic glycolysis) leading to phenotypically and functionally different outcomes (memory vs. effector). Our goal was to investigate the transcriptional programming that promotes Tvac formation. Using a bulk RNAsequencing approach we compared WT Tvac at day 3 post immunization to Tvac where IL-27 or IL-15 signaling was absent, to Tinf at day 4 post infectious challenge, or to naive OT-1 T cells.

2023-07-14 | GSE237415 | GEO

Vaccine-Elicited CD4 T Cells Induce Immunopathology Following Chronic LCMV Infection

Project description:CD4 T cells promote innate and adaptive immune responses, but how vaccine-elicited CD4 T cells contribute to immune protection remains unclear. Here we evaluated whether induction of virus-specific CD4 T cells by vaccination would protect mice against infection with chronic lymphocytic choriomeningitis virus (LCMV). Immunization with vaccines that selectively induced CD4 T cell responses resulted in catastrophic inflammation and mortality following challenge with a persistent form of LCMV. Immunopathology required antigen-specific CD4 T cells and was associated with a cytokine storm, generalized inflammation, and multi-organ system failure. Virus-specific CD8 T cells or antibodies abrogated the pathology. These data demonstrate that vaccine-elicited CD4 T cells in the absence of effective antiviral immune responses can trigger lethal immunopathology. Splenic GP66-specific CD4 T cells from mice immunized with either a LMwt vaccine (sham) or LMgp61 vaccine (CD4 vaccine) were purified by FACS on day 8 post-infection with LCMV clone 13

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Adenovirus Serotype 5 Vectors Trigger IL-27-Dependent Inhibitory CD4+ T Cell Responses

Project description:Viral vectors are attractive vaccine platforms that elicit robust innate and adaptive immune responses; however, viral vector vaccine candidates vary greatly in their ability to induce protective immunity. Ad5 vectors elicit robust CD8+ T cell responses but typically characterized by an exhausted phenotype. The mechanisms by which Ad5 vectors induce dysfunctional CD8+ T cells have not been fully elucidated. Here we demonstrate that Ad5 vectors, but not Ad26 vectors, elicit exhausted antigen-specific IL-10+PD1+ CD4+ T cells with a dysfunctional transcriptional profile, and these cells effectively suppress CD8+ T cells responses in vivo. Induction of inhibitory CD4+ T cells by Ad5 vectors was associated with increased IL-27 expression, and IL-27 blockade improved CD4+ T cell polyfunctionality. Together our data highlight a novel role for IL-27 in regulating responses to viral vector vaccines. Splenic CD45.2+ OT-II TCR-Tg CD4 T cells from CD45.1+ B6 mice immunized with Ad5-OVA or Ad26-OVA were purified by FACS on day 10 post-immunization

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Subunit vaccine elicited lung TRM cells use fibroblast IL-17R signaling to provide serotype independent immunity against hypervirulent K. pneumoniae

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Gene expression in Listeria- or vaccine-elicited T cells

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Subunit vaccine elicited lung TRM cells use fibroblast IL-17R signaling to provide serotype independent immunity against hypervirulent K. pneumoniae

Project description:Subunit vaccine conferred lung protection against heterologous strain through the augmentaion of lung tissue resident memmory CD4+ T-cells.

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