Drug – bio-affecting and body treating compositions – Enzyme or coenzyme containing – Oxidoreductases
Patent
1992-08-21
1995-10-03
Wax, Robert A.
Drug, bio-affecting and body treating compositions
Enzyme or coenzyme containing
Oxidoreductases
424 942, 435189, 514886, A61K 3844, C12N 902, C12N 1553
Patent
active
054550297
ABSTRACT:
An improved plasmid for the production of superoxide dismutase on an analog thereof which upon introduction into a suitable host containing the thermolabile repressor C.sub.I renders the host capable of effecting expression of a gene encoding superoxide dismutase or the analog. The plasmid is a double-stranded DNA molecule which includes in 5' to 3' order the following: the promoter and operator P.sub.L O.sub.L from lambda bacteriophage; the N utilization site; a first restriction enzyme site permitting replacement of the ribosomal binding site which follows thereafter; a ribosomal binding site; an ATG initiation codon; a second restriction enzyme site; a gene encoding superoxide dismutase or the analog; an origin of replication and a gene associated with a selectable or identifiable phenotypic trait manifested when the plasmid is present in the host. The distance between the 3' end of P.sub.L O.sub.L and the 5' end of the N utilization site is less than about 80 base pairs. The distance between the 3' end of the N utilization site and the 5' end of the ribosomal binding site is less than about 300 base pairs.
Host vector systems have been constructed from these plasmids and used to produce human superoxide dismutase and analogs thereof. Such SOD or analogs may be used to catalyze the reduction of superoxide radicals, reduce reperfusion injury, prolong the survival time of isolated organs and reduce spinal cord injury.
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Aviv Haim
Gorecki Marian
Hartman Jacob R.
Oppenheim Amos B.
Oren Rachel
Bio-Technology General Corp.
Grimes Eric
Wax Robert A.
White John P.
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