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Basic Characteristics of Mutations
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Mutation Site
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R1107H |
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Mutation Site Sentence
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Two additional mutations, P793H and R1107H, were also identified in some clones. |
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Mutation Level
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Amino acid level |
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Mutation Type
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Nonsynonymous substitution |
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Gene/Protein/Region
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Standardized Encoding Gene
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Genotype/Subtype
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- |
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Viral Reference
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-
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Functional Impact and Mechanisms
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Disease
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Cell line
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Immune
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- |
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Target Gene
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-
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Clinical and Epidemiological Correlations
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Clinical Information
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- |
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Treatment
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- |
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Location
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China |
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Literature Information
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PMID
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35585971
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Title
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Furin and TMPRSS2 Resistant Spike Induces Robust Humoral and Cellular Immunity Against SARS-CoV-2 Lethal Infection
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Author
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Lin JJ,Tien CF,Kuo YP,Lin EJ,Tsai WH,Chen MY,Tsai PJ,Su YW,Pathak N,Yang JM,Yu CY,Chuang ZS,Wu HC,Tsai WT,Dai SS,Liao HC,Chai KM,Su YS,Chuang TH,Liu SJ,Chen HW,Dou HY,Chen FJ,Chen CT,Liao CL,Yu GY
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Journal
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Frontiers in immunology
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Journal Info
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2022 May 2;13:872047
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Abstract
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An effective COVID-19 vaccine against broad SARS-CoV-2 variants is still an unmet need. In the study, the vesicular stomatitis virus (VSV)-based vector was used to express the SARS-CoV-2 Spike protein to identify better vaccine designs. The replication-competent of the recombinant VSV-spike virus with C-terminal 19 amino acid truncation (SDelta19 Rep) was generated. A single dose of SDelta19 Rep intranasal vaccination is sufficient to induce protective immunity against SARS-CoV-2 infection in hamsters. All the clones isolated from the SDelta19 Rep virus contained R682G mutation located at the Furin cleavage site. An additional S813Y mutation close to the TMPRSS2 cleavage site was identified in some clones. The enzymatic processing of S protein was blocked by these mutations. The vaccination of the R682G-S813Y virus produced a high antibody response against S protein and a robust S protein-specific CD8(+) T cell response. The vaccinated animals were protected from the lethal SARS-CoV-2 (delta variant) challenge. The S antigen with resistance to enzymatic processes by Furin and TMPRSS2 will provide better immunogenicity for vaccine design.
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Sequence Data
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-
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