VARIANTS OF SPIKE PROTEIN OF SARS-COV-2 AND USES THEREOF

To provide a variant spike protein of SARS-CoV-2 that can decrease the induction potency of antibodies that enhance the binding ability of the spike protein to Angiotensin Converting Enzyme 2.SOLUTION: Disclosed is a variant SARS-CoV-2 spike protein which may be a protein having the following (Sm1)...

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Hauptverfasser: SHINDO YASUHIRO, LIU YAFEI, ARASE NAO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a variant spike protein of SARS-CoV-2 that can decrease the induction potency of antibodies that enhance the binding ability of the spike protein to Angiotensin Converting Enzyme 2.SOLUTION: Disclosed is a variant SARS-CoV-2 spike protein which may be a protein having the following (Sm1) amino acid sequence, where (Sm1) is an amino acid sequence of the spike protein of wild-type SARS-CoV-2 (Sw protein) with at least one amino acid mutation at a corresponding position selected from the group consisting of the amino acids of positions 30, 32, 64, 65, 66, 186, 187, 211, 213, 214, 216, and 217 of the standard SARS-CoV-2 spike protein (Ss protein, a specific sequence).SELECTED DRAWING: Figure 6 【課題】SARS-CoV-2のSpikeタンパク質のアンジオテンシン変換酵素2への結合能を増強する抗体の誘導能を低減しうる、Spikeタンパク質の変異体を提供する。【解決手段】下記(Sm1)のアミノ酸配列からなるタンパク質であってよい、SARS-CoV-2のSpikeタンパク質の変異体:(Sm1)野生型SARS-CoV-2のSpikeタンパク質(Swタンパク質)のアミノ酸配列において、基準SARS-CoV-2のSpikeタンパク質(Ssタンパク質、特定の配列)における、30位、32位、64位、65位、66位、186位、187位、211位、213位、214位、216位、および217位のアミノ酸からなる群から選択された少なくとも1つのアミノ酸残基と対応するアミノ酸に変異を有するアミノ酸配列。【選択図】図6