摘要:
Described is an adenovirus whose surface has been modified with transferrin for the introduction of foreign DNA into higher eucaryotic cells, bonding preferably being through the glycoprotein part of the transferrin. The foreign DNA is imported into cells which have no adenovirus receptors and expressed. The adenovirus may be recombinant or non-recombinant.
摘要:
An endosomolytically active virus-like particle composed of units of capside proteins of viruses or virus-like particles, in which the capside protein units have a membrane-active peptidic sequence. These particles are suitable as a component of preparations for the transport of nucleic acids into higher eucaryotic cells via receptor-mediated endocytoses.
摘要:
Recombinant CELO virus or CELO virus DNA with a deletion or disruption of the Gam1 gene, optionally combined with deletions at the right or left end of the viral genome that allow insertion of large pieces of foreign DNA. The virus is useful as a vaccine for animals, in particular birds, and for gene therapy and vaccine applications in humans. The virus can also be used for recombinant protein production.
摘要:
Cancer vaccines are prepared by treating tumor cells or fibroblasts with a complex of immunostimulating polypeptide-coding DNA and of DNA-binding substance, for example polylysine, preferably conjugated with transferrine. The complex further contains a conjugate of DNA-binding substance and of an endosomolytic peptide or an adenovirus having at least one E4 defect or one E1a defect associated with other genetic defects.
摘要:
Des complexes de conjugués de facteur de liaison et de facteur d'intériorisation d'une part, et d'acide nucléique d'autre part, susceptibles d'être assimilés par endocytose par des cellules eucaryotes supérieures, contiennent sous une forme liée par non-covalence une ou plusieurs substances ayant une affinité avec l'acide nucléique et capables d'augmenter l'absorbabilité des complexes par des cellules. Le cas échéant, la substance liée par non-covalence ayant une affinité avec l'acide nucléique est identique au facteur de liaison, de préférence une substance polycationique. Le facteur d'intériorisation est de préference la transferrine. L'invention concerne également un procédé de production de ces complexes et un procédé d'introduction d'acide nucléique dans des cellules eucaryotes supérieures, ainsi que des compositions pharmaceutiques contenant des complexes avec un acide nucléique à effet thérapeutique.
摘要:
An endosomolytically active virus-like particle composed of units of capside proteins of viruses or virus-like particles, in which the capside protein units have a membrane-active peptidic sequence. These particles are suitable as a component of preparations for the transport of nucleic acids into higher eucaryotic cells via receptor-mediated endocytoses.
摘要:
De nouveaux conjugués de protéines et de polycations sont capables de former avec des acides nucléiques et avec des analogues d'acides nucléiques des complexes solubles. La part protéique de ces conjugués est formée par une protéine capable de se lier à une protéine de la surface cellulaire exprimée par des cellules de la lignée des cellules T, de sorte que les complexes ainsi formés sont absorbés par des cellules qui expriment la protéine de surface des cellules T. Ces complexes utiles dans des compositions pharmaceutiques contiennent un acide nucléique thérapeutique ou actif en thérapie génétique.
摘要:
The invention concerns a process for preparing viruses and viral vectors by the transfection of mammal cells with complexes of viral DNA and a polycation, which is optionally conjugated with a ligand for the target cell, in the presence of an endosomolytic agent. The process affords particular advantages for the production of recombinant retroviruses, adenoviruses and adeno-associated viruses in the cell, permitting high virus titres in packing cell lines and in primary cells. The area of application is above all gene therapy.
摘要:
In a process for treating eucaryotic cells, in applications in which the toxicity of lipopolysaccharides has an adverse effect, substances are used during transfection or to clean the foreign material which bond lipopolysaccharides and neutralise their toxicity. The process is of particular advantage when foreign material is to be inserted in the cells, especially in gene transfer methods. Compositions containing a lipopolysaccharide-bonding substance are used in cell culture applications as a medium and in therapeutic applications as medicaments.
摘要:
Described is an adenovirus whose surface has been modified with transferrin for the introduction of foreign DNA into higher eucaryotic cells, bonding preferably being through the glycoprotein part of the transferrin. The foreign DNA is imported into cells which have no adenovirus receptors and expressed. The adenovirus may be recombinant or non-recombinant.