Sperm Detection and Separation

Description

The detection of sperm and separation of sperm cells from the victim's DNA is crucial to identifying and characterizing the perpetrator's DNA profile. Improved automation of sperm detection and separation will enable more rape kits to be processed in a timely manner to help solve sexual assault crimes more effectively. Traditionally sperm cells are identified visually in evidentiary samples through light microscopy. New techniques are under development to aid improved visualization of sperm heads and tails with fluorescent staining as well as sperm cell isolation through laser capture microdissection.

Research Projects

The table below presents awards funded both prior to and under the the President's DNA Initiative, which began in 2004.

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Year    Title Awardee Amount Award Number
2008 Holographic Optical Trapping in Forensic Research and Development: Application to Rape Kit Analysis Arryx, Inc $252,026 2008-DN-BX-K123
2008 Detection and quantitation of spermatozoa Paternity Testing Corporation $361,651 2008-IJ-CX-K007
2008 Microdevice for Sperm and Sperm DNA Isolation Oak Ridge National Laboratory $445,673 2008-IJ-R-134
2007 Sperm Capture Using Aptamer-Based Technology Denver, City and County of $370,813 2007-DN-BX-K143
2006 Laser Microdissection as a Technique to Isolate Sperm Cells and Improve the Analysis of Touch Evidence Bode Technology Group, Inc. $191,429 2006-DN-BX-K032
2005 Development of a Procedure for Dielectrophoretic Separation of Sperm and Epithelial Cells for Application to Sexual Assault Case Evidence California Department of Justice $205,407 2005-DA-BX-K001
2004 Development of an Automated System to Detect Spermatozoa on Laboratory Slides Vermont Department of Public Safety $214,629 2004-DN-BX-K003
2003 Development of High-Throughput Method to Isolate Sperm DNA Connecticut Department of Public Safety $123,300 2003-IJ-CX-K103

Research Articles and Reports

Select a title to view an abstract from PubMed database (National Library of Medicine's) unless a different file type is indicated.

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Title Authors Publication Year Awardee Award Number
Laser Microdissection Separation of Pure Spermatozoa Populations from Mixed Cell Samples for Forensic DNA Analysis (pdf, 100 pages) Christine T. Sanders; Emily K. Reisenbigler; Daniel A. Peterson Final Grant Report 2007 Rosalind Franklin University of Medicine and Science 2004-DN-BX-K215
Development of a High-Throughput Method to Isolate Sperm DNA in Sexual Assault Cases (pdf, 31 pages) Carll Ladd; Eric Carita; Elaine Pagliaro; Alex Garvin; Andrew Crumbie; Henry Lee Final Grant Report 2006 Connecticut Department of Public Safety 2003-IJ-CX-K103
Laser microdissection separation of pure spermatozoa from epithelial cells for short tandem repeat analysis Sanders CT, Sanches N, Ballantyne J, Peterson DA J Forensic Sci. 2006 Jul; 51(4):748-57 2006 Rosalind Franklin University of Medicine and Science 2004-DN-BX-K215
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