Recombinant DNA molecules and expression vectors for erythropoietin
First Claim
1. A recombinant DNA molecule adapted for expression of erythropoietin, comprising a nucleic acid molecule encoding mammalian erythropoietin, an expression control sequence operatively linked thereto and at least one human apolipoprotein B SAR element.
1 Assignment
0 Petitions
Accused Products
Abstract
A recombinant DNA molecule adapted for transfection of a host cell comprising a nucleic acid molecule encoding mammalian erythropoietin, an expression control sequence operatively linked thereto and at least one SAR element. The invention also relates to expression vectors having the recombinant DNA molecule and to mammalian cells transformed with the expression vector. The mammalian cells lack multiple copies of an amplified amplification gene and are capable of expressing recombinant EPO in vitro at levels of at least 1,500 u/106 cells in 24 hours. The invention further relates to a method of expressing recombinant mammalian erythropoietin using the expression vectors and to a transgenic non-human animal or embryo whose germ cells and somatic cells contain a DNA construct having the recombinant DNA molecule of the invention.
69 Citations
17 Claims
- 1. A recombinant DNA molecule adapted for expression of erythropoietin, comprising a nucleic acid molecule encoding mammalian erythropoietin, an expression control sequence operatively linked thereto and at least one human apolipoprotein B SAR element.
- 8. An expression vector comprising a nucleic acid molecule encoding erythropoietin and having the sequence shown in SEQ ID NO.35 under the control of a promoter, flanked by 5'"'"' and 3'"'"' human apolipoprotein B SAR elements.
Specification