OPTIMIZATION OF ELECTROPHORESIS GELS FOR RIS ANALYSIS

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: N/A
Agency Tracking Number: 16673
Amount: $49,095.00
Phase: Phase I
Program: SBIR
Awards Year: 1991
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
114 Ridgeway Center, Oak Ridge, TN, 37830
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Arlinghaus, Heinrich F
 Principal Investigator
 (615) 483-1113
Business Contact
 1 R43 HG00532-01
Phone: () -
Research Institution
N/A
Abstract
GIVEN A FAST, SENSITIVE DETECTION METHOD, A LARGE NUMBER OF STABLE ISOTOPES COULD BE USED TO LABEL DNA, THEREBY MULTIPLEXING THE SEPARATION PROCESS, AND PROVIDING A NEW, MUCH FASTER PROCEDURE FOR LOCALIZING DNA AFTER ELECTROPHORESIS. SPUTTER-INITIATED RESONANCE IONIZATION SPECTROSCOPY (SIRIS) CAN BE USED TO MEASURE SUBATTOMOLE QUANTITIES OF ISOTOPE-LABELED DNA WITH EXCELLENT LATERAL AND MASS RESOLUTION. SIRIS ANALYSIS HAS THE POTENTIAL OF ORDERS-OF-MAGNITUDE IMPROVEMENT IN THE SPEED OF DNA SEQUENCING, BUT REQUIRES ELECTROPHORESIS GELS IN WHICH THE SEPARATED DNA FRAGMENTS ARE CONCENTRATED AT THE GEL SURFACE AND IN BANDS OF ABOUT 100 FM WIDTH. THE OBJECTIVE IS TO DEVELOP ANALYSIS METHODS FOR ELECTROPHORESIS GELS THAT CAN LOCALIZE SUBFEMTOMOLE CONCENTRATIONS OF ISOTOPE-LABELED DNA WITH MICROMETER LATERAL AND NANOMETER DEPTH RESOLUTION LEADING TO IMPROVED ELECTROPHORESIS MATERIALS AND PROCESSES THAT BEST MATCH THE ULTRAHIGH ELEMENT SENSITIVITY AVAILABLE WITH SIRIS. WE WILL OPTIMIZE SIRIS TO DETERMINE THE SPATIAL DISTRIBUTION OF ISOTOPE-LABELED DNA BANDS IN ULTRATHIN PAGE SAMPLES AND EXPLOIT OPTIMIZATION OF GEL PARAMETERS SUCH AS CASTING PROCEDURES, THICKNESS, MATRIX MODIFIERS, TEMPERATURE SHRINKING RATIOS, DRYING PROCESSES LEAD TO HIGH RESOLUTION GEL ELECTROPHORESIS WITH SURFACE ENHANCED DNA DISTRIBUTION BY THE END OF PHASE II.

* Information listed above is at the time of submission. *

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