Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Affect of antiviral ribavirin on YFV WT and vaccine strains.

ABSTRACT: Live-attenuated viral vaccines have been successfully used to combat infectious disease for decades but due to their empirical derivation, little is known about their mechanisms of attenuation. This lack of understanding makes the development of next generation live attenuated vaccines difficult. The success of the 17D vaccine and availability of the parent virus, Asibi, makes it an excellent model to understand the molecular basis of attenuation of a live attenuated vaccine and the effects of viral diversity on vaccine function. Due to the differences in genetic diversity between WT Asibi virus and its 17D vaccine derivative, we investigated the changes in genetic diversity of 17D and Asibi viruses following treatment with ribavirin.

INSTRUMENT(S): Illumina HiSeq 1500

ORGANISM(S): Yellow fever virus

SUBMITTER: Alan Barrett

PROVIDER: E-MTAB-8504 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Publications

Attenuation of Live-Attenuated Yellow Fever 17D Vaccine Virus Is Localized to a High-Fidelity Replication Complex.

Davis Emily H EH Beck Andrew S AS Strother Ashley E AE Thompson Jill K JK Widen Steven G SG Higgs Stephen S Wood Thomas G TG Barrett Alan D T ADT

mBio 20191022 5

The molecular basis of attenuation for live-attenuated vaccines is poorly understood. The yellow fever (YF) 17D vaccine virus was derived from the wild-type, parental strain Asibi virus by serial passage in chicken tissue and has proven to be a very safe and efficacious vaccine. We have previously shown that wild-type Asibi is a typical RNA virus with high genetic diversity, while the 17D vaccine virus has very little genetic diversity. To investigate this further, we treated Asibi and 17D virus ...[more]

PMID: 31641088

Similar Datasets

Project description:Influenza B virus (FLUBV) is a major respiratory pathogen of humans. Seasonal influenza vaccines include either one or both FLUBV lineage strains, Victoria, and Yamagata. Vaccine mismatch occurs frequently, particularly in countries where vaccines contain only one of the lineages. We have previously described the safety and efficacy of modified live attenuated FLUBV vaccines based on either virus with rearranged genomes (FluB-RAM and FluB-RANS) or carrying a PB1 segment with a combination of temperature sensitive mutations and a C-terminal HA tag (FluB-att). We compared side by side the immunological responses in female and male DBA/2J mice vaccinated with either one of these vaccines and those with isogenic backgrounds encoding a chimeric HA segment carrying an N-terminal peptide encoding the IgA inducing peptide (IGIP). Recombinant viruses with or without the IGIP modification were genetically stable over multiple passages in eggs. In mice, introduction of IGIP improved attenuation of the vaccine candidates, particularly for the FluB-RAM/IGIP compared with the non-IGIP FluB-RAM counterpart. In a prime-boost regime, mice were completely protected against lethal challenge with a homologous FLUBV strain. Recombinant viruses induced antibodies against HA considered of protective value. Antibodies against NA and NP were readily detected. Compared to male mice and regardless of the vaccine used, female mice showed a clear trend towards enhanced humoral and cross-reactive IgG and IgA anti-HA responses as well as against NA and NP. The presence of IGIP in the vaccine resulted in an overall trend towards reduced anti-HA responses but enhanced anti-NA and anti-NP responses, particularly of the IgA isotype. Mucosal and serological responses two weeks after challenge showed similar trends with clear differences observed based on sex, vaccine backbone, and whether the vaccine carried the IGIP modification. These findings are significant for the development of universal influenza vaccines.

Dataset Information

Affect of antiviral ribavirin on YFV WT and vaccine strains.

Publications

Attenuation of Live-Attenuated Yellow Fever 17D Vaccine Virus Is Localized to a High-Fidelity Replication Complex.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets