Tissue plasminogen activator having zymogenic or fibrin...

Details Tissue plasminogen activator having zymogenic or fibrin... Tissue plasminogen activator having zymogenic or fibrin...

C - Chemistry, Metallurgy

12

N

195/1.22, 167/10

C12N 15/58 (2006.01) A61K 38/49 (2006.01) A61P 7/02 (2006.01) A61P 9/10 (2006.01) C12N 1/21 (2006.01) C12N 5/10 (2006.01) C12N 9/72 (2006.01) C12N 15/63 (2006.01) C12Q 1/37 (2006.01) A61K 38/00 (2006.01)

Patent

CA 1341484

Tissue plasminogen activator (t-PA) zymogens and variants are prepared, including a fibrinolytically active variant of t-PA that has an amino acid alteration at a site within the protease domain of t-PA as compared with the corresponding wild-type t-PA, which alteration renders the variant zymogenic in the presence of plasmin-degraded fibrinogen, and/or fibrin (or plasma clot) specific, as compared to the corresponding wild-type t-PA. DNA sequences can be prepared that encode the zymogens and variants, as well as expression vectors incorporating the DNA sequences, and host cells transformed with the expression vectors. The zymogens and variants may be used in a pharmaceutical preparation to treat a vascular disease or condition or to prevent fibrin deposition or adhesion formation or reformation in mammals.

610241

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