摘要:
The invention relates to manipulation of equine herpes virus for use in gene therapy and in particular to modifications of the virus so that it can carry heterologous material and furthermore, preferably, be replication deficient so that the virus cannot replicate in the target tissue.
摘要:
The present invention provides a means for the propagation of adenovirus lacking the native tropism by using genetic methods to modify the fiber protein by addition of a C-terminal tag. The modified virus is then propagated in a cell line transfected with a sequence encoding an artificial receptor for the C-terminal tag on the modified fiber protein.
摘要:
The present invention provides an adenovirus serotype 30 (Ad30) fiber amino acid sequence. The present invention also provides polynucleotides and expression vectors encoding an Ad30 fiber and viral particles and cells containing such expression vectors. The present invention further provides methods of treating genetic diseases or cancers in a mammal using the polynucleotides, polypeptides, expression vectors, viral particles and cells of the present invention.
摘要:
Methods, recombinant host cells and kits are disclosed-for the production of members of specific binding pairs (sbp), e.g. antibodies, using display on the surface of secreted replicable genetic display packages (rgdps), e.g. filamentous phage. To produce a library of great diversity recombination occurs between first and second vectors comprising nucleic acid encoding first and second polypeptide chains of sbp members respectively, thereby producing recombinant vectors each encoding both a first and a second polypeptide chain component of a sbp member. The recombination may take place in vitro or intracellularly and may be site-specific, e.g. involving use of the loxP sequence and mutants thereof. Recombination may take place after prior screening or selecting for rgdps displaying sbp members which bind complementary sbp member of interest.
摘要:
The invention provides a method for producing purified replication-defective recombinant AAV virions. The method comprises introducing into a suitable host cell an AAV vector, an AAV helper construct and an adenoplasmid accessory construct into the host cell. The adenoplasmid accessory plasmid is composed adenovirus plasmid DNA unable to be packaged into adenoviral particles because it lacks packaging signal sequence(s) or it contains additional sequences making it too large to package. The host cell is cultured to produce crude rAAV virions and then lysed. The resulting cell lysate is applied to a chromatographic column containing sulfonated cellulose or subjected to cesium chloride equilibrium gradient centrifugation and the purified rAAV virions are recovered.
摘要:
A recombinant Sendai virus vector expressing chemokine is provided. This vector enables large quantity production of clinically useful chemokines. It is also useful for treatment of diseases that can be treated by chemokines.
摘要:
The invention provides intracellular peptide toxins capable of killing bacterial and eukaryotic cells when present within the cell, while substantially lacking the ability to kill such cells when present externally. The invention also provides recombinant bacteriophage containing nucleic acid sequences encoding intracellular peptide toxins, and methods of using such bacteriophage to kill bacteria. Furthermore, the invention provides compositions, including pharmaceutical compositions, which can be used to kill bacteria or inhibit the growth of bacteria both in vitro and in vivo. Methods of treating a bacterial infection in a subject are also provided by the invention.
摘要:
A method for increasing production yield of viruses, viral proteins, and other related biological materials through enhanced control and stabilization of protein production via stress proteins and the resultant protein products. The present invention is also directed to methods for selection or engineering of cell lines yielding such enhanced stabilized products. More specifically, example embodiments of the present invention are directed to methods for enhancing production of a viral agent, production of cell lines exhibiting permanent genetic modification, production of permissive eucaryotic cell lines, enhancing functional recombinant product yield, and the products of such methods.
摘要:
Various genes of herpes virus of turkeys (HVT) Marek's disease virus (MDV) and infectious laryngotracheitis virus (ILTV) have been identified as non-essential regions (and candidates for insertion sites for foreign genes) and/or as antigen-encoding regions. The former include the HVT homologue of the HSV (herpes simplex virus) gC gene, the TK (thymidine kinase) region of MDV or ILTV, ORF3 of ILTV (as defined herein), the ribonucleotide reductase (large subunit) gene of ILTV, MDV or HVT and the ribonucleotide reductase (small subunit) gene of MDV. The antigen-encoding regions include the HVT homologues of the HSV gB, gC and gH genes, the ILTV homologue of HSV gB, ORF2 of ILTV, and the HVT homologue of the HSV-1 immediate early genes IE-175 and IE-68. Manipulation of these genes allows vaccines to be prepared comprising attenuated virus or virus carrying heterologous antigen-encoding sequences.