Human DNA Polymerase Gamma for Testing the Effect of Drugs on Mitochondrial Function
One of the primary means for treating HIV infection is the use of antiviral nucleotide or nucleoside analogs. These analogs work by inhibiting the activity of reverse transcriptase, the enzyme responsible for preparing the HIV genome for integration into the DNA of the host cell. Although these analogs do not have an effect on the polymerases responsible for replicating the human genome, the polymerase responsible for replicating the mitochondrial genome is sensitive to these analogs. When patients are exposed to nucleotide or nucleoside analogs through long-term treatment regimens, the replication of the mitochondrial genome can be adversely affected. Since mitochondrial functionality is necessary for cell activity, the nucleotide and nucleoside analogs can cause serious and unwanted side-effects.
This invention concerns the cloning and purification of DNA polymerase gamma, the polymerase responsible for replicating the mitochondrial genome. The enzymes that have been purified include the wild-type version, a version which lacks exonuclease (proofreading) activity, and several versions with modified activity due to the mutation of the enzyme. These purified enzymes can be used to directly test the effects of new drugs that affect the activity of polymerases, such as nucleotide and nucleoside analogs.
Potential Commercial Applications: | Competitive Advantages: |
|
|
Development Stage:
In vitro data available
Inventors:
William Copeland (NIEHS) ➽ more inventions...
Susan Lim (NIEHS) ➽ more inventions...
Rajesh Kasiviswanathan (NIEHS) ➽ more inventions...
Intellectual Property:
HHS Reference Nos. E-191-2011/0, B-035-1998/0, B-035-1998/1 - Research Materials. Patent protection is not being pursued for these technologies.
Publications:
Longley MJ, et al. PMID 9671525
Collaboration Opportunity:
The NIEHS is seeking statements of capability or interest from parties interested in collaborative research to further develop, evaluate or commercialize DNA polymerase G and method of purifying. For collaboration opportunities, please contact Sally E. Tilotta, Ph.D. at sally.tilotta@nih.gov.
Licensing Contact:
Vidita Choudhry, Ph.D.
Email: vidita.choudhry@nih.gov
Phone: 301-594-4095
OTT Reference No: B-035-1998-0
Updated: May 7, 2018