A Method for the Purification and Recovery of Genomic DNA from an HLA DQA1 Amplification Product and Its Subsequent Amplification and Typing with the AmpliType® PM PCR Amplification and Typing Kit

    Volume 40, Issue 4 (July 1995)

    ISSN: 0022-1198

    CODEN: JFSOAD

    Page Count: 5


    Budowle, B
    Research Chemist, Forensic Science Research and Training Center, Laboratory Division, Federal Bureau of Investigation Academy, Quantico, VA

    Hochmeister, MN
    Research Scientists, DNA Identity Laboratory, and Director, University of Berne, Berne,

    Dirnhofer, R
    Director, University of Berne,

    Borer, UV
    Research Scientists, DNA Identity Laboratory, and Director, University of Berne, Berne,

    (Received 12 October 1994; accepted 8 December 1994)

    Abstract

    DNA from plucked single hairs from ten individuals was extracted by two different methods and subsequently amplified and typed using the AmpliType™ HLA DQ alpha Forensic DNA Amplification and Typing Kit. The remaining untyped portions of the DQA1 amplification products were stored refrigerated or frozen for two weeks and subsequently purified using Centricon™ 100 microconcentrators. Genomic DNA was recovered from the DQA1 amplification PCR and used again as a template for a subsequent multiplex PCR. Twenty μL of each retentate were amplified and typed with the AmpliType® PM PCR Amplification and Typing Kit. All typing results were consistent with DQA1 and PM results of control hairs and reference blood samples from the donors and all results were consistent with those obtained when the samples were typed solely for PM. The DQA1-Centricon™ 100-PM approach is useful when the genomic DNA from an evidentiary sample has been used completely for HLA-DQA1 typing, so that only the amplified product is remaining. The typing of five more genetic markers can be achieved from a HLA-DQA1 sample, so additional information for identification purposes could be provided. However, genomic DNA as well as the DQA1 product are recovered and the latter will also serve as a template in the subsequent PM amplifications. Therefore there will be more DQA1 product after the PM amplification than would be expected when only genomic DNA was used as a template. Thus certain practices should be considered when reading the types from PM probe strips if this DQA1-Centricon™ 100-PM approach is used.


    Paper ID: JFS13843J

    DOI: 10.1520/JFS13843J

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    Title A Method for the Purification and Recovery of Genomic DNA from an HLA DQA1 Amplification Product and Its Subsequent Amplification and Typing with the AmpliType® PM PCR Amplification and Typing Kit
    Symposium , 0000-00-00
    Committee E30