摘要:
Provided are methods of modulating the persistence of the expression in a cell of a transgene, such as a transgene in a non-Herpes vector or in at least E4Δ adenoviral vector, and related systems. One method comprises contacting the cell with a non-Herpes vector comprising and expressing a gene encoding HSV ICP0, whereupon expression of HSV ICP0 the persistence of expression of the transgene is modulated. Further provided is a system for modulating the persistence of expression of a transgene, which system comprises a non-Herpes vector comprising (i) a gene encoding HSV ICP0 and (ii) a transgene, wherein the HSV ICP0 modulates the persistence of expression of the transgene and either the non-Herpes vector comprises the transgene or the system further comprises a vector, in which case the vector comprises the transgene. Another method comprises contacting the cell with an at least E4Δ adenoviral vector comprising (i) a transgene and (ii) a gene encoding a trans-acting factor, wherein the trans-acting factor modulates the persistence of expression of the transgene and the gene encoding the trans-acting factor is not from the E4 region of an adenovirus. Yet another method comprises contacting a cell simultaneously or sequentially with (i) an at least E4Δ adenoviral vector comprising a transgene and (ii) a viral vector comprising a gene encoding a trans-acting factor, which is not from the E4 region of an adenovirus and which modulates the persistence of expression of the transgene. Also provided is a system for modulating the persistence of expression of a transgene in an at least E4Δ adenoviral vector, which system comprises (i) an at least E4Δ adenoviral vector comprising a transgene and (ii) a gene encoding a trans-acting factor, wherein the gene encoding the trans-acting factor is not from the E4 region of an adenovirus, the trans-acting factor modulates the persistence of expression of the transgene, and either the at least E4Δ adenoviral vector comprises the gene encoding the trans-acting factor or the system comprises a viral vector, in which case the viral vector comprises the gene encoding the trans-acting factor.
摘要:
A method of enriching a solution of an adenovirus comprising applying a mixed solution comprising an adenovirus and at least one undesired type of biomolecule to an anion exchange chromatography resin containing a binding moiety selected from the group consisting of dimethylaminopropyl, dimethylaminobutyl, dimethylaminoisobutyl, and dimethylaminopentyl and eluting the adenovirus from the chromatography resin. Also provided is a method of purifying an adenovirus from adenovirus-infected cells comprising lysing such cells, applying the lysate to a single chromatography resin, eluting the adenovirus from the chromatography resin, and collecting a fraction containing adenovirus that is substantially as pure as triple CsC1 density gradient-purified adenovirus. The present method further provides a method of accurately quantifying the number of adenoviral particles in a solution of adenovirus comprising applying to and eluting from an anion exchange chromatography resin a sample solution of adenovirus, comparing the absorbance of the sample solution of adenovirus and the absorbance of a standard solution of adenovirus, and quantifying the number of adenoviral particles in the sample solution.
摘要:
The present invention provides an improved method of making eukaryotic gene transfer vectors comprising homologous recombining lambdid vectors with a second DNA in a bacterium to generate recombinant eukaryotic viral gene transfer vectors as well as lambdid vector used in the inventive method and an inventive system comprising the lambdid vector.
摘要:
The present invention provides a chimeric adenovirus fiber protein, which differs from the wild-type coat protein by the introduction of a nonnative amino acid sequence in a conformationally-restrained manner. Such a chimeric adenovirus fiber protein according to the invention is able to direct entry into cells of a vector comprising the chimeric fiber protein that is more efficient than entry into cells of a vector that is identical except for comprising a wild-type adenovirus fiber protein rather than the chimeric adenovirus fiber protein. The nonnative amino acid sequences encode a peptide motif that comprises an epitope for an antibody, or a ligand for a cell surface receptor, that can be employed in cell targeting. The present invention also pertains to vectors comprising such a chimeric adenovirus fiber protein, and to methods of using such vectors.
摘要:
The invention provides methods for propagating a monkey adenovirus in a cell, including a human cell, comprising one or more gene products isolated from a human adenovirus. Also provided are methods for propagating wherein the monkey adenovirus comprises a nucleic acid sequence encoding a human adenovirus gene product. The invention further provides a monkey adenovirus, including a replication-deficient monkey adenovirus, obtained by such propagation methods.
摘要:
The invention provides an adenovirus or adenoviral vector characterized by comprising a nucleic acid sequence encoding one or more Respiratory Syncytial Virus (RSV) antigens and one or more particular nucleic acid sequences or one or more particular amino acid sequences, or portions thereof, pertaining to, for example, an adenoviral pIX protein, DNA polymerase protein, penton protein, hexon protein, and/or fiber protein, as well as a method of inducing an immune response against RSV in a mammal by administering the adenovirus or adenoviral vector to the mammal.
摘要:
The present disclosure provides compositions for eliciting an immune response, including a prophylactic immune response, against human immunodeficiency virus. The composition includes nucleic acid constructs encoding HIV antigenic polypeptides of multiple clades or strains. Methods for eliciting an immune response by administering the composition to a subject are also provided.
摘要:
The invention is directed to a live attenuated serotype 14 adenovirus, and a method of inducing an immune response against a serotype 14 adenovirus in a mammal using the live attenuated serotype 14 adenovirus.