Abstract: Novel viral vectors in which the expression of viral genes is regulated in such a way that it is functional in a complementation cell and non-functional in a host cell, as well as viral particles and host cells containing said novel vectors, are disclosed. A complementation cell including a viral gene expression regulator, and a method for preparing infectious viral particles, are also disclosed. Finally, a pharmaceutical composition containing said vectors, and the therapeutical use thereof, are disclosed.

Abstract: 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.

Abstract: The invention relates to an adenovirus fiber modified by the mutation of one or more residues. The residues are directed towards the natural cell receptor in the three-dimensional structure of said adenovirus. The invention further relates to a DNA fragment, and expression vector, and a cell line expressing said fiber, and also concerns an adenovirus, the process for producing this type of adenovirus, and a infectable host cell, as well as their therapeutic application and a corresponding pharmaceutical composition.

Abstract: Novel defective adenoviruses for the transfer and expression of an exogenous nucleotide sequence in a host cell or organism. The invention also relates to novel complementation lines and to the process for the preparation of these novel defective adenoviruses and their use in therapy and to a pharmaceutical composition containing same.

Abstract: 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 transformed by adenovirus E1 sequences either operatively linked on one or two DNA molecules, the sequences operatively linked to regulatory sequences enabling transcription and translation of encoded proteins. Also, a cell line derived from PER.C6 that expresses functional Ad35 E1B sequences. The Ad35-E1B sequences are driven by the E1B promoter and terminated by a heterologous poly-adenylation signal. The new cell lines are useful for producing recombinant adenoviruses. The cell lines can be used to produce human recombinant therapeutic proteins such as human antibodies. In addition, the cell lines are useful for producing human viruses other than adenovirus such as influenza, herpes simplex, rotavirus, and measles.

Abstract: A gene therapy composition of the present invention comprises one or more nucleotide fragments. The one or more nucleotide fragments taken together comprise at least (1) a nucleotide sequence (a) encoding human soluble CD4, (2) a nucleotide sequence (b) comprising at least nucleotide sequences encoding the heavy chain and the light chain of immunoglobulin IgG3, wherein the IgG3 is directed against at least one of the peptides selected from the group consisting of SEQ ID NO:2 to SEQ ID NO:26. The composition further comprises the nucleic elements required for replicating each of nucleotide sequences (a) and (b), in a host cell, when the host cell divides and for expressing under control each of nucleotide sequences (a) and (b) in the host cell.

Abstract: 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 transformed by adenovirus E1 sequences either operatively linked on one or two DNA molecules, the sequences operatively linked to regulatory sequences enabling transcription and translation of encoded proteins. Also, a cell line derived from PER.C6 that expresses functional Ad35-E1B sequences. The Ad35-E1B sequences are driven by the E1B promoter and terminated by a heterologous poly-adenylation signal. The new cell lines are useful for producing recombinant adenoviruses. The cell lines can be used to produce human recombinant therapeutic proteins such as human antibodies. In addition, the cell lines are useful for producing human viruses other than adenovirus such as influenza, herpes simplex, rotavirus, and measles.

Abstract: The invention relates to an adenovirus fiber modified by the mutation of one or more residues. The residues are directed towards the natural cell receptor in the three-dimensional structure of said adenovirus. The invention further relates to a DNA fragment, and expression vector, and a cell line expressing said fiber, and also concerns an adenovirus, the process for producing this type of adenovirus, and a infectable host cell, as well as their therapeutic application and a corresponding pharmaceutical composition.

Abstract: A packaging cell line capable of complemention recombinant adenoviruses based on serotypes from subgroup B, preferably adenovirus type 35. The cell line is preferably 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.

Abstract: The invention concerns adenoviral vectors having the characteristic of containing a region essential for heterologous packaging with respect to the adenoviral genome from which they are derived. The invention also concern a method for making a viral preparation containing said adenoviral vectors, a cell, a pharmaceutical composition or material comprising them and their therapeutic or prophylactic use. Finally, the invention concerns an adenoviral genome of animal origin having attenuated packaging properties with respect tot he native genome from which it is derived.

Abstract: Described are recombinant adenoviral vectors retaining sufficient E4 sequences to improve the expression and/or persistence of expression of a gene of interest. Furthermore, the invention describes the use of a polynucleotide encoding one or more ORF(s) of the E4 region of an adenovirus selected from ORF1, ORF2, ORF3, ORF4, ORF3/4, ORF6/7, ORF6 and ORF7 taken individually or in combination, to improve the expression and/or persistence of expression of a gene of interest operably linked to regulatory elements and inserted into an expression vector. Finally, a host cell, a composition, an infectious viral particle comprising such a polynucleotide or adenoviral vector, a method for preparing said viral particle as well as their therapeutic use are described.

Abstract: Novel helper vectors are provided for complementing defective recombinant viral vectors, characterized in that they are provided with recombination sequences recognized by a recombinase. A complementation cell expressing the recombinase, and a method for preparing recombinant viral vectors as infectious viral particles for transferring and expressing genes of interest in a host organism or cell, are also provided. The invention is particularly suitable for use in gene therapy, especially in humans.

Abstract: The invention concerns a recombinant adenoviral vector driving from an adenovirus genome at least by deleting all or part of the E1 region, the adenoviral vector comprising an expression cassette of a gene of interest placed under the control of elements necessary for its expression in a host cell or a host organism, the elements required for its expression including at least a splicing sequence. The invention is characterized in that the splicing sequence is derived from a eukaryotic nuclear gene selected among the ovalbumen genes, &bgr; or &bgr;-globine, collagen and factor VIII of mammals or a synthetic splicing sequence. The invention also concerns a host cell and an infectious viral particle comprising such a vector, a method for preparing such a particle and their therapeutic or prophylactic use. The invention further concerns a pharmaceutical composition containing the adenoviral vector, the host cell or the viral particle.

Abstract: Novel helper vectors are provided for complementing defective recombinant viral vectors, characterized in that they are provided with recombination sequences recognized by a recombinase. A complementation cell expressing the recombinase, and a method for preparing recombinant viral vectors as infectious viral particles for transferring and expressing genes of interest in a host organism or cell, are also provided. The invention is particularly suitable for use in gene therapy, especially in humans.

Abstract: Novel eective adenoviruses for the transfer and expression of an exogenous nucleotide sequence in a host cell or organism. The invention also relates to novel complementation lines and to the process for the preparation of these novel defective adenoviruses and their use in therapy and to a pharmaceutical composition containing same.

Abstract: The present invention relates to new variants of the human immunodeficiency virus (HIV) TAT protein which exhibit a transdominant phenotype, as well as to the DNA fragments encoding said variants, the expression cassettes permitting their expression by the recombinant route and the cells containing them. The transdominant variants of the TAT protein are especially useful for the prevention or treatment of HIV infections.

Abstract: A composition resulting from a combination of trans-dominant variants of two viral proteins TAT and REV from HIV, and the use thereof as a combination product are disclosed. A vector for expressing the two variants, a eukaryotic cell containing the same, and a pharmaceutical composition for treating viral infections, are also disclosed.

Abstract: Novel viral vectors in which the expression of viral genes is regulated in such a way that it is functional in a complementation cell and non-functional in a host cell, as well as viral particles and host cells containing said novel vectors, are disclosed. A complementation cell including a viral gene expression regulator, and a method for preparing infectious viral particles, are also disclosed. Finally, a pharmaceutical composition containing said vectors, and the therapeutical use thereof, are disclosed.

Abstract: Novel defective adenoviruses for the transfer and expression of an exogenous nucleotide sequence in a host cell or organism. The invention also relates to novel complementation lines and to the process for the preparation of these novel defective adenoviruses and their use in therapy and to a pharmaceutical composition containing same.

Abstract: Novel helper vectors are provided for complementing defective recombinant viral vectors, characterized in that they are provided with recombination sequences recognized by a recombinase. A complementation cell expressing the recombinase, and a method for preparing recombinant viral vectors as infectious viral particles for transferring and expressing genes of interest in a host organism or cell, are also provided. The invention is particularly suitable for use in gene therapy, especially in humans.