Nano-antibody and its application based on sars-cov-2 s protein s1 subunit

Abstract

A nanobody and its application based on SARS-CoV-2 S protein S1 subunit are provided, and the present disclosure relates to biomedical technology. The present disclosure chooses the Spike RBD of SARS-CoV-2 as a target, and screens the nanobody targeting SARS-CoV-2 by using a nanobody library. After an ELISA test, the Spike RBD target of SARS-CoV-2 can be specifically identification while a SPIKE S1+S2 ECD target is identification, and a binding signal is relatively strong. The corresponding nanobody sequence is constructed into a prokaryotic expression vector for expression and purification to express the target nanobody successfully. After purification, the purity is greater than 90%. The ELISA test of VHH nanobody showed that the purified nanobody has higher affinity to the two targets.

Dependencies are inferred from the claim text.