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Last Updated: September 26, 2022

Patent: 5,648,267

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Summary for Patent: 5,648,267
Title: Impaired dominant selectable marker sequence and intronic insertion strategies for enhancement of expression of gene product and expression vector systems comprising same
Abstract:Disclosed herein are fully impaired consensus Kozak sequences which are most typically used with dominant selectable markers of transcriptional cassettes which are a part of an expression vector. These vectors are most typically utilized in the expression of proteins in mammalian expression systems. As defined, disclosed and claimed herein, a \"fully impaired consensus Kozak\" comprises the following sequence: ##STR1## where: Nat nucleotides 2,3,8 and 9 is a nucleotide selected from the group consisting of adenme (A), quanine (G), cytosine (C) or thymine (T)/uracil (U); Nat nucleotides 1 and 7 is a pyrimidine nucleotide, ie C or T/U; \"ATG\" is a codon encoding for the amino acid methionine, the so-called \"start\" codon; and -3 and +1 are directional reference points vis-a-vis ATG, ie -3 is meant to indicate three nucleotides upstream of ATG and +1 is meant to indicate one nucleotide downstream of ATG. Dominant selectable markers further comprising artificial intronic insertion regions are further disclosed.
Inventor(s): Reff; Mitchell E. (San Diego, CA)
Assignee: IDEC Pharmaceuticals Corporation (San Diego, CA)
Application Number:08/147,696
Patent Claims:see list of patent claims

Details for Patent 5,648,267

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Merck Sharp & Dohme Corp. INTRON A interferon alfa-2b For Injection 103132 06/04/1986 See Plans and Pricing 2014-07-15
Merck Sharp & Dohme Corp. INTRON A interferon alfa-2b For Injection 103132 See Plans and Pricing 2014-07-15
Merck Sharp & Dohme Corp. INTRON A interferon alfa-2b Injection 103132 See Plans and Pricing 2014-07-15
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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