You're using a free limited version of DrugPatentWatch: Upgrade for Complete Access

Last Updated: November 10, 2025

Claims for Patent: 5,989,906


✉ Email this page to a colleague

« Back to Dashboard


Summary for Patent: 5,989,906
Title: Method and reagent for inhibiting P-glycoprotein (mdr-1-gene)
Abstract:An enzymatic RNA molecule which specifically cleaves mRNA encoded by an mdr-1 gene.
Inventor(s): Thompson; James D. (Solon, OH)
Assignee: Ribozyme Pharmaceuticals, Inc. (Cleveland, OH)
Application Number:08/192,942
Patent Claims:1. A catalytic RNA molecule which is active to specifically cleave the sequence shown as any of SEQ. ID. NOS. 1-9.

2. The catalytic RNA molecule of claim 1 wherein said RNA molecule is in a hammerhead motif.

3. The catalytic RNA molecule of claim 1 wherein said RNA molecule is in a hairpin, hepatitis Delta virus, group 1 intron, or RNaseP RNA motif.

4. A mammalian cell comprising a catalytic RNA molecule of any of claims 1, 2 or 3.

5. The cell of claim 4, wherein said cell is a human cell.

6. An expression vector comprising nucleic acid encoding the catalytic RNA molecule of any of claims 1 or 2, in a manner which allows expression of that catalytic RNA molecule within a mammalian cell.

Details for Patent 5,989,906

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b For Injection 103132 June 04, 1986 ⤷  Get Started Free 2014-02-07
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b For Injection 103132 ⤷  Get Started Free 2014-02-07
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b Injection 103132 ⤷  Get Started Free 2014-02-07
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.