The present invention discloses a broad-spectrum dual-target polypeptide against the new
coronavirus and its application, relating to the field of
biomedicine. The polypeptide
drug provided by the present invention can more effectively and synergistically inhibit the infection process of the
virus by acting on the two key targets of the
virus, RBD and HR1, at the same time. On the one hand, by targeting RBD, the binding of the
virus to the host
cell can be blocked, thereby hindering the adsorption of the virus on the surface of the host
cell and curbing its adsorption process; on the other hand, by targeting HR1, the formation of the virus 6-HB can be interfered with, further inhibiting the fusion process of the
viral envelope and the host envelope. The polypeptide that can simultaneously target the dual targets of the new
coronavirus RBD and HR1, especially R1L25HR2, provided by the present invention, can effectively inhibit SARS-CoV-2 and its mutants, and has a broad-spectrum activity against the new
coronavirus.