摘要:
The invention relates to compositions, specifically novel nucleic acid constructs encoding a cardiovirus 2A polypeptide operably linked to suitable promoters. Also, disclosed are methods whereby the nucleic acid constructs are introduced into cells or cell free systems to regulate cellular mRNA transcription and cap-dependent or internal ribosomal entry site (IRES)-dependent mRNA translation.
摘要:
The invention relates to compositions, specifically novel nucleic acid constructs encoding a cardiovirus 2A polypeptide operably linked to suitable promoters. Also, disclosed are methods whereby the nucleic acid constructs are introduced into cells or cell free systems to regulate cellular mRNA transcription and cap-dependent or internal ribosomal entry site (IRES)-dependent mRNA translation.
摘要:
According to one embodiment, a reporter vector includes a first and a second reporter gene expression unit and a replication initiation sequence. The first reporter gene expression unit includes a promoter sequence of a cell characteristics marker, a first reporter gene, and a first transcription termination sequence. The second reporter gene expression unit includes a promoter sequence exhibiting constitutive activity, a second reporter gene, a bicistronic expression sequence, a replication initiation protein gene, and a second transcription termination sequence. The replication initiation sequence binds to a replication initiation protein, thereby initiating replication of the reporter vector.
摘要:
The present invention relates to replicons or self-replicating RNA molecules, derived from the genome of cardioviruses and aphtoviruses, which can be used to express heterologous proteins in animal cells. When injected in an animal host, for example in the form of naked RNA, these replicons permit the translation of the encoded heterologous protein. If the encoded heterologous protein is a foreign antigen, these replicons induce an immune response against the encoded heterologous protein. The invention uses cardiovirus and aphtovirus genomes to construct these replicons. The invention demonstrates that these replicons, when injected as naked RNA, can induce immune responses against a replicon-encoded heterologous protein in an animal recipient without the help of any kind of carrier or adjuvant.
摘要:
The present invention relates to replicons or self-replicating RNA molecules, derived from the genome of cardioviruses and aphtoviruses, which can be used to express heterologous proteins in animal cells. When injected in an animal host, for example in the form of naked RNA, these replicons permit the translation of the encoded heterologous protein. If the encoded heterologous protein is a foreign antigen, these replicons induce an immune response against the encoded heterologous protein. The invention uses cardiovirus and aphtovirus genomes to construct these replicons. The invention demonstrates that these replicons, when injected as naked RNA, can induce immune responses against a replicon-encoded heterologous protein in an animal recipient without the help of any kind of carrier or adjuvant.
摘要:
An efficient, versatile and simple expression system which confers cap-independent translation to prokaryotic RNAs in eukaryotic cells has been described. The utility of recombinant vaccinia virus for this purpose has been illustrated.