Provided is an African swine fever virus chimeric protein. The chimeric protein comprises: (1) an African swine fever virus p72 domain I; (2) an African swine fever virus p72 domain II; (3) an African swine fever virus p72 domain III; and (4) an African swine fever virus antigenic protein. By using African swine fever virus p72 protein as a skeleton, the chimeric protein provided in the present invention will exhibit antigenic epitopes of African swine fever virus antigenic proteins p54, p30, CD2v, and p12, achieve a good immune effect, and can produce significant humoral and cell-mediated immune response.

The disclosure relates to a fusion protein comprising at least a first and a second peptide, wherein —the second peptide comprises a targeting region and a first and a second interaction region, —the second peptide is located on the surface of the fusion protein; —the second peptide comprises at least two interaction pairs, wherein an interaction pair is formed by an amino acid of the first interaction region and an amino acid of the second interaction region, —the interaction between the amino acids of an interaction pair is covalent or non-covalent; and —at least one interaction pair is a covalent interaction pair in which the amino acids are covalently bound, and to virus like particles (VLP) comprising the fusion protein for use as drug delivery system. Also provided are polynucleotides encoding the fusion protein, suitable expression vectors, host cells, production methods for the fusion protein and the VLP comprising the fusion protein.

The disclosure relates to a fusion protein comprising at least a first and a second peptide, wherein —the second peptide comprises a targeting region and a first and a second interaction region, —the second peptide is located on the surface of the fusion protein; —the second peptide comprises at least two interaction pairs, wherein an interaction pair is formed by an amino acid of the first interaction region and an amino acid of the second interaction region, —the interaction between the amino acids of an interaction pair is covalent or non-covalent; and —at least one interaction pair is a covalent interaction pair in which the amino acids are covalently bound, and to virus like particles (VLP) comprising the fusion protein for use as drug delivery system. Also provided are polynucleotides encoding the fusion protein, suitable expression vectors, host cells, production methods for the fusion protein and the VLP comprising the fusion protein.

The present application provides: a polypeptide characterized by having an ability of penetrating into a cell and the structure represented by Formula (I) ##STR00001##
wherein n is a number of 2 to 20; R.sup.1 and R.sup.2 may independently represent a C.sub.1-C.sub.4 alkyl group or may bind to each other to form a ring; R.sup.3 represents a C.sub.1-C.sub.10 primary aminoalkyl group; R.sup.4 represents a hydrogen atom or a C.sub.1-C.sub.10 hydrocarbon group; the “n” number of R.sup.1, R.sup.2, R.sup.3, and R.sup.4 may independently be the same with or different from each other; and the N-terminus and the C-terminus may or may not be modified independently; and a cell-invasive composition comprising the polypeptide and a substance of interest.

The disclosure relates, in some aspects, to adeno-associated vims capsid proteins isolated from an in vivo library and recombinant adeno-associated viruses (rAAVs) comprising the same. In some aspects, the disclosure relates to isolated nucleic acids encoding AAV capsid proteins isolated from an in vivo library. In some embodiments, rAAVs and compositions described by the disclosure are useful for delivery of one or more transgenes to the muscle-tissue of a subject.

The disclosure relates, in some aspects, to adeno-associated vims capsid proteins isolated from an in vivo library and recombinant adeno-associated viruses (rAAVs) comprising the same. In some aspects, the disclosure relates to isolated nucleic acids encoding AAV capsid proteins isolated from an in vivo library. In some embodiments, rAAVs and compositions described by the disclosure are useful for delivery of one or more transgenes to the muscle-tissue of a subject.

The disclosure relates, in some aspects, to adeno-associated virus capsid proteins isolated from an in vivo library and recombinant adeno-associated viruses (rAAVs) comprising the same. In some aspects, the disclosure relates to isolated nucleic acids encoding AAV capsid proteins isolated from an in vivo library. In some embodiments, rAAVs and compositions described by the disclosure are useful for delivery of one or more transgenes to the muscle-tissue of a subject.

The disclosure relates, in some aspects, to adeno-associated virus capsid proteins isolated from an in vivo library and recombinant adeno-associated viruses (rAAVs) comprising the same. In some aspects, the disclosure relates to isolated nucleic acids encoding AAV capsid proteins isolated from an in vivo library. In some embodiments, rAAVs and compositions described by the disclosure are useful for delivery of one or more transgenes to the muscle-tissue of a subject.

The present invention relates to African swine fever virus (ASFV) peptides and/or polypeptides as well as immunogenic fragments thereof, corresponding encoding AFSV oligonucleotides and/or polynucleotides as well as immunogenic fragments thereof, immunogenic compositions, vaccines and uses thereof.

In certain aspects, the disclosure relates to a nucleic acid molecule encoding two or more different thanotransmission polypeptides. Thanotransmission is communication between cells that is a result of activation of a cell turnover pathway in a target cell, which signals a responding cell to undergo a biological response. Vectors (e.g., engineered viruses, plasmids and transposons), cells and pharmaceutical compositions comprising one or more nucleic acid molecules encoding two or more thanotransmision polypeptides are also disclosed. Methods of promoting thanotransmission by a target cell, methods of promoting an immune response in a subject, and methods of treating cancer in a subject are further disclosed.