| 摘要 |
<p>The invention relates to DNS-sequences, particularly transcription- or expression increasing elements (TE-elements) and the use thereof on an expression vector in connection with an enhancer, a promoter, a product gene and a selection marker. The invention describes the sequence No. 1 and the TE-elements TE-01, -02, -03, -04, - 06, -07, -08, -10, -11 or -12. Due to their small size TE-06, TE-07 or TE-08 are particularly preferred. The sequence No. 1 is from a sequence region being upstream of the code region of the Ub/S27a-genes of CHO-cells. TE-elements cause an expression increase of the product gene with stable integration into the eukaryotic genome, preferably the CHO-DG44-genome. Chromosomal position effects are thus overcome, shielded or eliminated. Thus, the content of high producers of a transfection deposit and also the absolute expression level is increased up to fifteen fold.</p> |
