VECTEURS D'ADN NON INTÉGRANTS POUR LA MODIFICATION GÉNÉTIQUE DE CELLULES

摘要

The present invention relates to the field of self-replicating non-integrative episomal vertebrate expression vectors useful for in gene therapy, ex vivo cell therapy, stem cell therapy, and more particularly, for improving the expression of vector encoded antigens or therapeutic genes. Such recombinant DNA molecules are useful in biotechnology, transgenic organisms, gene therapy, stem cell therapy, therapeutic vaccination, agriculture and DNA vaccines. More specifically, relates to a polynucleotide comprising at least one promoter and an S/MAR element, wherein said S/MAR element is located downstream of said promoter and wherein the nucleic acid sequence of said S/MAR element (S/MAR sequence) comprises at least 3 sequence motifs ATTA (SEQ ID NO: l) per 100 nucleotides over a stretch of at most 200 nucleotides; the present invention further relates to a composition and to a host cell comprising said polynucleotide, and to the polynucleotide for use in medicine and for use in treating genetic disease. The present invention also relates to a kit and to a device comprising said polynucleotide, and to methods and uses related to the polynucleotide.