摘要:
A gene delivery vehicle having been provided with at least a tissue tropism for cells selected from the group of smooth muscle cells, endothelial cells, and/or liver cells. The tissue tropism is generally provided by a virus capsid, such as one comprising protein fragments from at least two different viruses, such as two different adenoviruses, including adenovirus of subgroup C or subgroup B (for example, adenovirus 16). The protein fragments can comprises a tissue tropism determining fragment of a fiber protein derived from a subgroup B adenovirus. Also, cells for producing such gene delivery vehicles and pharmaceutical compositions containing said gene delivery vehicles. Further, a method of delivering nucleic acid to cells such as smooth muscle cells and/or endothelial cells which involves administering to the cells an adenovirus capsid having proteins from at least two different adenoviruses and wherein at least a tissue tropism determining fragment of a fiber protein is derived from a subgroup B adenovirus. Particular construct are also disclosed.
摘要:
A gene delivery vehicle having been provided with at least a tissue tropism for cells selected from the group of smooth muscle cells, endothelial cells, and/or liver cells. The tissue tropism is generally provided by a virus capsid, such as one comprising protein fragments from at least two different viruses, such as two different adenoviruses, including adenovirus of subgroup C or subgroup B (for example, adenovirus 16). The protein fragments can comprise a tissue tropism-determining fragment of a fiber protein derived from a subgroup B adenovirus. Also, cells for producing such gene delivery vehicles and pharmaceutical compositions containing these gene delivery vehicles are provided. Further, a method is disclosed for delivering nucleic acid to cells such as smooth muscle cells and/or endothelial cells which involves administering to the cells an adenovirus capsid having proteins from at least two different adenoviruses and wherein at least a tissue tropism-determining fragment of a fiber protein is derived from a subgroup B adenovirus. Particular constructs are also disclosed.
摘要:
A gene delivery vehicle having been provided with at least a tissue tropism for cells selected from the group of smooth muscle cells, endothelial cells, and/or liver cells. The tissue tropism is generally provided by a virus capsid, such as one comprising protein fragments from at least two different viruses, such as two different adenoviruses, including adenovirus of subgroup C or subgroup B (for example, adenovirus 16). The protein fragments can comprise a tissue tropism-determining fragment of a fiber protein derived from a subgroup B adenovirus. Also, cells for producing such gene delivery vehicles and pharmaceutical compositions containing these gene delivery vehicles are provided. Further, a method is disclosed for delivering nucleic acid to cells such as smooth muscle cells and/or endothelial cells which involves administering to the cells an adenovirus capsid having proteins from at least two different adenoviruses and wherein at least a tissue tropism-determining fragment of a fiber protein is derived from a subgroup B adenovirus. Particular constructs are also disclosed.
摘要:
A packaging cell line capable of complementing recombinant adenoviruses based on serotypes from subgroup B, preferably adenovirus type 35. The cell line is preferably derived from primary, diploid human cells (e.g., primary human retinoblasts, primary human embryonic kidney cells and primary human amniocytes) which are transformed by adenovirus E1 sequences either operatively linked on one DNA molecule or located on two separate DNA molecules, the sequences being operatively linked to regulatory sequences enabling transcription and translation of encoded proteins. Also disclosed is a cell line derived from PER.C6 (ECACC deposit number 96022940), which cell expresses functional Ad35 E1B sequences. The Ad35-E1B sequences are driven by the E1B promoter or a heterologous promoter and terminated by a heterologous poly-adenylation signal. The new cell lines are useful for producing recombinant adenoviruses designed for gene therapy and vaccination. The cell line can also be used for producing human recombinant therapeutic proteins such as human growth factors and human antibodies. In addition, the cell lines are useful for producing human viruses other than adenovirus such as influenza virus, herpes simplex virus, rotavirus, measles virus.
摘要:
Described is a method for producing a protein of interest, the method comprising: a) providing a recombinant adenoviral vector comprising nucleic acid encoding the protein of interest under control of a promoter, wherein the adenoviral vector has deletions in a first region and in a second region of the adenovirus genome, wherein each of the first region and the second region is required for adenoviral genome replication and/or adenovirus particle formation, b) propagating the adenoviral vector in a first type of complementing cells that express proteins from the first and from the second region of the adenovirus genome so as to complement the deletions of the recombinant adenoviral vector, to obtain recombinant adenovirus particles, c) infecting a culture of a second type of complementing cells with the recombinant adenovirus particles, wherein the second type of complementing cells express protein from the first region of the adenovirus genome but not protein from the second region of the adenovirus genome, to produce the protein of interest, and d) harvesting the protein of interest.
摘要:
The invention relates to vaccines comprising recombinant vectors, such as recombinant adenoviruses. The vectors comprise heterologous nucleic acids encoding for at least two antigens from one or more tuberculosis-causing bacilli. The invention also relates to the use of specific protease recognition sites linking antigens through which the encoded antigens are separated upon cleavage. After cleavage, the antigens contribute to the immune response in a separate manner. The recombinant vectors may comprise a nucleic acid encoding the protease cleaving the linkers and separating the antigens. The invention furthermore relates to the use of genetic adjuvants encoded by the recombinant vectors, wherein such genetic adjuvants may also be cleaved through the presence of the cleavable linkers and the specific protease.
摘要:
Described is a method for producing a protein of interest, the method comprising: a) providing a recombinant adenoviral vector comprising nucleic acid encoding the protein of interest under control of a promoter, wherein the adenoviral vector has deletions in a first region and in a second region of the adenovirus genome, wherein each of the first region and the second region is required for adenoviral genome replication and/or adenovirus particle formation, b) propagating the adenoviral vector in a first type of complementing cells that express proteins from the first and from the second region of the adenovirus genome so as to complement the deletions of the recombinant adenoviral vector, to obtain recombinant adenovirus particles, c) infecting a culture of a second type of complementing cells with the recombinant adenovirus particles, wherein the second type of complementing cells express protein from the first region of the adenovirus genome but not protein from the second region of the adenovirus genome, to produce the protein of interest, and d) harvesting the protein of interest.
摘要:
Adenovirus serotypes differ in their natural tropism. The adenovirus serotypes 2, 4, 5 and 7 all have a natural affiliation towards lung epithelia and other respiratory tissues. In contrast, serotypes 40 and 41 have a natural affiliation towards the gastrointestinal tract. The serotypes described, differ in at least capsid proteins (penton-base, hexon), proteins responsible for cell binding (fiber protein), and proteins involved in adenovirus replication. This difference in tropism and capsid protein among serotypes has led to the many research efforts aimed at redirecting the adenovirus tropism by modification of the capsid proteins.
摘要:
Methods and associated materials for transducing mesenchymal stem cells with a desired nucleic acid. Mesenchymal stem cells are a recently discovered kind of stem cell for which suitable transfer vehicles are still desired. Typical gene delivery vehicles such as the adenoviruses or adeno associated viruses have no particular tropism for mesenchymal stem cells. Also disclosed is gene therapy using adenoviruses provided with tropism for mesenchymal stem cells.
摘要:
The present invention relates to a gene delivery vehicle comprising a recombinant adenovirus having a tropism for a primary human chondrocyte. By efficiently transducing a nucleic acid of interest into a primary chondrocytes, the gene delivery vehicle is able to at least in part improve the counteraction of cartilage disease. In one embodiment the recombinant adenovirus comprises a deletion in the gene encoding for fiber protein, which is replaced by a nucleic acid sequence encoding at least part of a fiber protein of a B-type adenovirus.