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Vaccine-elicited CD4 T cells prevent the deletion of antiviral B cells in chronic infection

ABSTRACT: Vaccine-elicited CD4 T cells prevent the deletion of antiviral B cells in chronic infection

PROVIDER: PRJNA672903 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12922229.fastq.gz	Fastqsanger.gz
	SRR12922230.fastq.gz	Fastqsanger.gz
	SRR12922231.fastq.gz	Fastqsanger.gz
	SRR12922232.fastq.gz	Fastqsanger.gz
	SRR12922233.fastq.gz	Fastqsanger.gz

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Vaccine-elicited CD4 T cells prevent the deletion of antiviral B cells in chronic infection

Project description:Vaccine-elicited CD4 T cells prevent the deletion of antiviral B cells in chronic infection

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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

2014-12-04 | E-GEOD-63825 | biostudies-arrayexpress

Vaccine-elicited CD4 T cells prevent the deletion of antiviral B cells in chronic infection

Project description:Vaccination induced CD4 T cells prevent B cell decimation by turning on a germinal center like transcriptional program. This cellular differentiation is similiar to the one observed when type I interferon receptor-deficient (IFNAR-/-) instead of wt mice are used as recipients.

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

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Vaccine-elicited CD4 T cells prevent the deletion of antiviral B cells in chronic infection

Project description:CD4 T cells responses induced by LM61 immunization are heterogeneous in phenotype. The majority consists of Th1 cells, but there is also a consistent population of Tfh-differentiated cells and a minor population of Treg cells. Tfh-differentiated cells, alongside Th1 cells expand upon LCMV challenge.

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IL-27 in vaccine elicited cellular immunity

Project description:IL-27 in vaccine elicited cellular immunity

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Passive Transfer of Vaccine-Elicited Antibodies Protects Against SIV in Rhesus Macaques

Project description:In this study, we show that passive transfer of purified antibodies from vaccinated macaques can protect naïve animals against SIVmac251 challenges. The protective signature included multiple antibody functions and correlated with upregulation of interferon pathways in the vaccinated animals. Adoptive transfer of purified IgG from the vaccinated animals with the most robust protective signatures provided partial protection against SIVmac251 challenges in naïve recipient rhesus macaques. These data demonstrate the protective efficacy of purified vaccine-elicited antiviral antibodies, even in the absence of virus neutralization.

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Gene expression in Listeria- or vaccine-elicited T cells

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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.

2023-07-14 | GSE237416 | GEO

Passive Transfer of Vaccine-Elicited Antibodies Protects Against SIV in Rhesus Macaques

Project description:Passive Transfer of Vaccine-Elicited Antibodies Protects Against SIV in Rhesus Macaques

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