The invention provides a specific envelope
protein as well as a lentiviral vector and application thereof. The specific envelope
protein comprises
F protein Nipah-F of a
Nipah virus, an
antibody and
G protein modified
protein derived from the
Nipah virus. The envelope protein derived from the
Nipah virus is modified, so that the envelope protein retains the membrane melting capability and obtains the specific targeting capability of cells. The method is characterized in that targeting proteins with a ligand recognition function, such as a single-chain
antibody scFv, an
ankyrin repeat protein DARPin and the like, are fused with a
G protein modified protein derived from the Nipah
virus, and are connected with a Nipah-
F protein. The specific envelope protein is used for packaging
lentivirus,
retrovirus vectors,
viroid and other vectors, so that the vectors specifically recognize antigens on
cell membranes, and
cell targeting
nucleic acid delivery is completed. According to the invention, T cells can be modified
in vivo, and genetically modified T cells can be generated
in vivo, so that procedures related to return CAR-
T cell therapy are greatly reduced.