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Single Molecule Scanning of DNA Radiation Oxidative Damage, Phase I
Completed
Description
This proposal will develop an assay to map genomic DNA, at the single molecule level and in a nanodevice, for oxidative DNA damage arising from radiation exposure; this will result in a highly quantitative approach to real-time health monitoring, dose response studies, studies of cancer progression, and systematic analyses of immunologically compromised cells. Exposure to radiation damages DNA. Reactive oxygen species (ROS) are liberated, causing oxidative damage to DNA bases. The major consequence of this damage is misincorporation of bases during replication, leading to irreversible cell damage, cancer or compromised cell function. Oxidatively damaged genomic DNA is tagged at the lesions using specific antibodies, and the resultant DNA is scanned in a linear manner by our single molecule nanodevice. The locations, amount, and type of lesions are recorded for each DNA molecule. Megabase pair DNA is scanned by the reader in milliseconds, at ultra-sensitive single molecule detection limits. The technology is highly practical based on our significant experiences in developing single molecule scanning technologies. The potential nanoscale device and analysis speed create new possibilities for routine implementation. This addresses a current unmet need since there are no existing technologies that allow comprehensive assessment of DNA oxidative damage.
Details
| Technology area | Human Health, Life Support, and Habitation Systems > Radiation > Radiation Transport and Risk Modeling |
| Program | Small Business Innovation Research/Small Business Tech Transfer (SBIR/STTR) |
| Lead organization | Ames Research Center, Moffett Field, CA |
| Start date | 2005-01-24 |
| End date | 2005-07-25 |
Project contacts
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How to get involved
This is a mature technology (TRL 7+) — the realistic path in is usually NASA's Technology Transfer Program: licensing an existing NASA patent, or a Space Act Agreement to use NASA facilities/expertise directly. NASA also runs a startup licensing program with no upfront fee for companies formed to commercialize a specific NASA technology.
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