Magarray, Inc. — Department of Health and Human Services SBIR Phase II: 102

Description

DESCRIPTION provided by applicant This project seeks to optimize a promising magneto nanosensor technology for use in cancer diagnosis By adapting a common technology from the computer disk drive industry this simple device enables researchers to simultaneously detect multiple proteins or biomarkers at ultra low concentrations in biological fluids The abundance and change over time of several of these biomarkers when taken together can be a powerful diagnostic tool At this time the tools required to measure these biomarkers such as mass spectrometry or ELISA immunoassays are slow expensive difficult to use and often not very reproducible In addition many interesting biomarkers are present at such low concentrations that they simply cannot be detected with any but the most sophisticated and involved methods The technology under development combines the advantages of high sensitivity ease of use rapid quantification and low cost These drastic improvements are possible in part due to the use of extremely sensitive giant magnetoresistive GMR sensors and also because there are no natural magnetic signal sources in a blood sample which results in a very low background signal Additionally these sensors have been modified to detect only those magnetic nanoparticle labels which are actually bound to the sensors unbound labels floating nearby are almost completely ignored That means that unlike most other assay technologies it is not necessary to remove the excess labels to determine the result This allows the assay to be partially or completely wash free which again greatly increases the sensitivity and ease of use Furthermore no laser or complex optics are required because the signal is a simple change in electrical resistance of the sensor This means that the ancillary instrumentation can be very simple and cost efficient With an initial focus on lung cancer where there are no effective methods for early detection of the disease researchers are attempting to validate a panel of six biomarkers that have been associated with asymptomatic lung cancer The long term goal is to have a diagnostic test that allows doctors to diagnose patients when they are still in Stage I and face survival rates of as opposed todayandapos s situation where most patients donandapos t get diagnosed until they reach Stage IIIB or IV and face less than a chance of survival PUBLIC HEALTH RELEVANCE PROJECT NARRATIVE Researchers are using a promising magneto nanosensor technology to develop a novel diagnostic test for early detection of lung cancer This simple blood test would greatly improve patient survival by making it possible to diagnose lung cancer in its early stages when it has a much better chance of being successfully treated