Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1314280 | ENA |
REPOSITORIES: ENA
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Project description:We have developed a composite infection vaccine technology (ciVAX) assembled from approved products for rapid response to pandemics and biothreat agents. ciVAX consists of an injectable biomaterial scaffold containing factors that recruit, reprogram and release dendritic cells (DC) in vivo. For bacterial infections, ciVAX contains Fc-Mannose-Binding Lectin (FcMBL) microbeads with captured PAMPs fractions from inactivated bacterial cell-wall lysates. ciVAX vaccination generates potent humoral and T cell responses to bacterial antigens, and ciVAX protects mice and pigs against lethal E coli challenge in sepsis and septic shock models
2021-01-22 | MSV000086751 | MassIVE
Project description:Interventions: Dendritic cell-based cancer vaccination;Cancer, dendritic cell, vaccination
Primary outcome(s): Safety (adverse reactions, severe adverse events)
Study Design: single arm study,open(masking not used),uncontrolled control,single assignment
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Project description:The aim of this study is to evaluate the immunogenicity and clinical efficacy of intradermal vaccination with autologous RNA-modified dendritic cells (DCs) - engineered to express the WT1 protein - in patients with limited spread metastatic solid tumors, i.e. breast cancers, glioblastoma grade IV, sarcomas, malignant mesothelioma and colorectal tumors. Based on the results of our previously performed phase I study with autologous WT1 mRNA-transfected DC, the investigators hypothesize that the vaccination with DC will be well-tolerated and will result in an increase in WT1-specific CD8+ T cell responses.
| 2101939 | ecrin-mdr-crc
Project description:Messenger RNA vaccines based on lipid nanoparticles (mRNA-LNPs) are promising vaccine modalities. However, mRNA-LNP vaccines frequently cause adverse reactions such as swelling and fever in humans, partly due to the inflammatory nature of LNP. Modification of the ionizable lipids used in LNP is one approach to avoid these adverse reactions. Herein, we report the development of mRNA-LNP vaccines with better protective immunity and reduced adverse reactions using LNP, including SS-cleavable and pH-activated lipid-like materials with oleic acid (ssPalmO) as an ionizable lipid (LNPssPalmO). We used mRNA expressing H5N1 subtype high-pathogenicity avian influenza virus-derived hemagglutinin or neuraminidase to generate mRNA-LNP vaccines against H5N1 influenza. Compared with conventional LNP, mRNA-LNPssPalmO induced comparable antigen-specific antibodies and better IFN--producing Th1 responses in mice. Both mRNA-LNPssPalmO and conventional mRNA-LNP conferred strong protection against homologous H5N1 virus challenge. In addition, mRNA-LNPssPalmO showed better cross-protection against heterologous H5N1 virus challenge compared to conventional mRNA-LNPs. Furthermore, we observed that mRNA-LNPssPalmO induced less inflammatory responses (e.g., inflammatory cytokine production and vascular hyperpermeability) and fewer adverse reactions (e.g., weight loss and fever) compared with conventional mRNA-LNP. These results suggest that mRNA-LNPssPalmO would be a safe alternative to conventional vaccines to overcome mRNA-LNP vaccine hesitancy.
2025-03-05 | GSE279744 | GEO
Project description:Messenger RNA vaccines based on lipid nanoparticles (mRNA-LNPs) are promising vaccine modalities. However, mRNA-LNP vaccines frequently cause adverse reactions such as swelling and fever in humans, partly due to the inflammatory nature of LNP. Modification of the ionizable lipids used in LNP is one approach to avoid these adverse reactions. Herein, we report the development of mRNA-LNP vaccines with better protective immunity and reduced adverse reactions using LNP, including SS-cleavable and pH-activated lipid-like materials with oleic acid (ssPalmO) as an ionizable lipid (LNPssPalmO). We used mRNA expressing H5N1 subtype high-pathogenicity avian influenza virus-derived hemagglutinin or neuraminidase to generate mRNA-LNP vaccines against H5N1 influenza. Compared with conventional LNP, mRNA-LNPssPalmO induced comparable antigen-specific antibodies and better IFN--producing Th1 responses in mice. Both mRNA-LNPssPalmO and conventional mRNA-LNP conferred strong protection against homologous H5N1 virus challenge. In addition, mRNA-LNPssPalmO showed better cross-protection against heterologous H5N1 virus challenge compared to conventional mRNA-LNPs. Furthermore, we observed that mRNA-LNPssPalmO induced less inflammatory responses (e.g., inflammatory cytokine production and vascular hyperpermeability) and fewer adverse reactions (e.g., weight loss and fever) compared with conventional mRNA-LNP. These results suggest that mRNA-LNPssPalmO would be a safe alternative to conventional vaccines to overcome mRNA-LNP vaccine hesitancy.
2025-03-05 | GSE279743 | GEO
Project description:Lipids reprogram metabolism to become a major carbon source for histone acetylation
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Project description:We developed prototype LNP-mRNA vaccine candidates against SARS-CoV-2 Delta, SARS-CoV and MERS-CoV, and test how multiplexing LNP-mRNAs can induce effective immune responses in animal models. Triplex and Duplex LNP-mRNA vaccination induced antigen-specific antibody responses against SARS-CoV-2, SARS-CoV and MERS-CoV. Single cell RNA-seq profiled the global systemic immune repertoires and respective transcriptome signatures of vaccinated animals, revealing systemic increase in activated B cells, and differential gene expression across major adaptive immune cells. Sequential vaccination showed potent antibody responses against all three species, significantly stronger than simultaneous vaccination in mixture. These data demonstrated feasibility, antibody responses and single cell immune profiles of multi-species coronavirus vaccination. The direct comparison between simultaneous and sequential vaccination offers insights on optimization of vaccination schedules to provide broad and potent antibody immunity against three major pathogenic coronavirus species.
2025-07-30 | GSE207141 | GEO