| 摘要 |
The present invention relates to plasmids suitable for IL-2 expresion, particularly, human IL-2 expression, and related methods. The plasmid consists essentially of an expression facilitating sequence derived from the immediate-early promoter region of CMV, an expression facilitating sequence derived from the transcriptional termination/polyadenylation signal sequence of the BGH gene, a sequence coding for the eukaryotic expression of an IL-2, possessing a bioactivity of the complete IL-2, operably linked to both of said expression facilitating sequences. The sequence coding for the expression of an IL-2 is a sequence encoding a mature IL-2 and a non-IL-2 leader peptide that augments eukaryotic expression compared to a wild-type IL-2 leader peptide. Optionally, the plasmid also includes a non-mammalian origin of replication and a sequence operably encoding a selectable marker.
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