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Last Updated: April 25, 2024

Claims for Patent: 5,686,120

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Summary for Patent: 5,686,120

Title:	Pre-mRNA processing enhancer and method for intron-independent gene expression
Abstract:	A chimeric RNA molecule comprising at least one pre-mRNA processing element is disclosed. A gene construct comprising a DNA sequence encoding at least one pre-mRNA processing enhancer is also disclosed. A method of enhancing cytoplasmic RNA accumulation is disclosed. This method comprises the step of inserting a DNA sequence encoding the RNA into the vector described and expressing the DNA sequence.
Inventor(s):	Mertz; Janet E. (Madison, WI), Liu; Xuedong (Madison, WI)
Assignee:	Wisconsin Alumni Research Foundation (Madison, WI)
Application Number:	08/447,313
Patent Claims:	1. A chimeric RNA molecule comprising a 5' untranslated region, a 3' untranslated region and a protein-coding sequence, wherein the 5' untranslated region or the 3' untranslated region of the RNA molecule comprises at least one pre-mRNA processing element not natively connected to the protein-coding sequence, wherein the pre-mRNA processing enhancer has a nucleotide sequence selected from the group consisting of SEQ ID NO:1, NO:11, and NO:12. 2. A gene construct comprising a DNA sequence encoding at least one pre-mRNA processing enhancer downstream from a promoter and upstream from a protein coding sequence, wherein the promoter is operably connected to the protein-coding sequence, wherein the pre-mRNA processing enhancer is not natively connected to the protein coding sequence and wherein the pre-mRNA processing enhancer increases the accumulation of the protein coding sequence at least two-fold without requiring intron excision and wherein a single pre-mRNA processing enhancer is localized to a nucleotide length of less than 300 nucleotides. 3. A chimeric RNA molecule comprising a 5' untranslated region, a 3' untranslated region and a protein-coding sequence, wherein the 5' untranslated region of the RNA molecule comprises at least one pre-mRNA processing element not natively connected to the protein-coding sequence and wherein the pre-mRNA processing enhancer is within the 5' untranslated region, additionally comprising a translation enhancer sequence upstream from the protein-coding sequence and downstream from the pre-mRNA processing enhancer. 4. A gene construct comprising a DNA sequence encoding at least one pre-mRNA processing enhancer, wherein said construct comprises a unique restriction endonuclease site downstream from said DNA sequence and wherein the restriction endonuclease site is part of a polylinker.

Details for Patent 5,686,120

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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	⤷ Try a Trial	2039-02-26
Merck Sharp & Dohme Corp.	INTRON A	interferon alfa-2b	For Injection	103132		⤷ Try a Trial	2039-02-26
Merck Sharp & Dohme Corp.	INTRON A	interferon alfa-2b	Injection	103132		⤷ Try a Trial	2039-02-26
>Applicant	>Tradename	>Biologic Ingredient	>Dosage Form	>BLA	>Approval Date	>Patent No.	>Expiredate

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