The goal of this dissertation was to inhibit the interaction between SARS coronavirus (SARS-CoV) S protein and the host cell, more specifically between the S protein receptor binding domain (RBD) and the cellular receptor of SARS-CoV, ACE2. Thereby, 11 peptide aptamers (PA) presented by the scaffold protein thioredoxin A targeting SARS-CoV S RBD were isolated from a combinatorial PA library and characterized using the yeast two-hybrid method. For further analysis PAs were expressed in E. coli and purified.
In order to determine the impact of the PAs on the RBD-ACE2 interaction, the inhibitory effect on the formation of syncytia caused by interaction between S and ACE2, as well as on the viral infection of Vero-E6 cells was analysed. It is demonstrated that one of the identified PAs is able to significantly inhibit the interaction between S and ACE2 and therefore to prevent the first steps of SARS-CoV infection.
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The goal of this dissertation was to inhibit the interaction between SARS coronavirus (SARS-CoV) S protein and the host cell, more specifically between the S protein receptor binding domain (RBD) and the cellular receptor of SARS-CoV, ACE2. Thereby, 11 peptide aptamers (PA) presented by the scaffold protein thioredoxin A targeting SARS-CoV S RBD were isolated from a combinatorial PA library and characterized using the yeast two-hybrid method. For further analysis PAs were expressed in E. coli an...
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