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Examination of Proposed Manufacturing Standards Using Low Template DNA

Promega Corp.

Examination of Proposed Manufacturing Standards Using Low Template DNA

29 Jul 2015

Forensic DNA laboratories rely on reagent and plastics manufacturers to supply high-quality products with minimal interference from contaminating DNA but with the increasing sensitivity of short tandem repeat (STR) amplification systems, levels of DNA that were previously undetected may now generate partial profiles. This poster explores the limit of detection for the analysis methods currently being used and what level of contaminating DNA would interfere with analysis in customer labs thorough determination of the sensitivity of STR analysis and comparison to qPCR analysis and.

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PowerPlex® Fusion System

Promega Corp.

  The PowerPlex® Fusion System is a 24-locus multiplex for human identification applications including forensic analysis, relationship testing and research use.   The PowerPlex® Fusion System provides all of the materials needed for co-amplification and five-color fluorescent detection of 24 loci (23 STR loci and Amelogenin), including the CODIS core loci and the European Standard Set (ESS) loci. With 24 loci, the system offers the most STR loci and highest discrimination from a single reaction and delivers more information in demanding forensic, paternity and relationship testing cases. Utilizing proven STR chemistries on existing instrument platforms and software, the PowerPlex® Fusion System requires no software or instrument upgrades.   The PowerPlex® Fusion System works well with extracted DNA samples, including low amounts of template DNA, mixtures and inhibitor-laden samples. The PowerPlex® Fusion System also is compatible with direct amplification, enabling streamlined STR databasing efforts. Amplification can be successfully performed with sample types such as FTA® card punches as well as pretreated swabs, Bode Buccal DNA Collector™ punches or S&S 903 punches. Fast cycling conditions used with PowerPlex® Fusion reduce sample processing time for all samples. PowerPlex® Fusion System Benefits: Achieve the most inter database compatibility and highest discrimination of any autosomal STR kit. Improve laboratory efficiencies with rapid cycling and direct amplification protocols. Obtain a higher success rate with difficult casework samples due to robustness and sensitivity. Simplify validation and QC efforts by using one kit for both casework and databasing sections.

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Capillary ElectrophoresisCapillary electrophoresis (CE) is used to separate molecules based on charge, size and hydrophobicity. Pressure, voltage or a vacuum is used to introduce the sample to fused silica capillaries. Fluorescence, UV/Vis, UV or diode array detectors are used to visualize components. Types of CE systems include capillary electrochromatography (CEC), capillary zone electrophoresis and capillary gel electrophoresis. Find the best capillary electrophoresis equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Cell / Tissue CultureCell culture or tissue culture is used to study the biology of cells or tissues and to isolate cellular products in an environment which can be manipulated and well defined. Accurately control your culture environment with bioreactors or culture incubators, bind your cells to a surface or together with an extracellular matrix. Distinguish cell types with differential media or proliferate cells with certain characteristics using selective media. Enrich your media with supplements such as growth factors, sera and vitamins. Find the best cell and tissue culture products, kits and equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.PCR and Thermal CyclingPolymerase chain reaction (PCR) kits and thermal cyclers are used for the in vitro amplification of DNA permitting subsequent analysis and experimental procedures. Explore a range of high-quality polymerase, primers and nucleotides or simplify your workflow with a PCR mastermix. Find reverse transcription PCR (RT-PCR) and cDNA synthesis kits for RNA products and libraries. Quantitatively measure the amplification of DNA with real-time PCR (qPCR) and droplet digital PCR (ddPCR) kits and systems, and discover automated PCR setup solutions to increase throughput. Alternative DNA amplification methods also include recombinase polymerase amplification (RPA) kits. Find the best PCR kits and thermal cyclers and purification equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.DNA / RNA Extraction and PurificationPurified DNA and RNA are required for numerous downstream molecular biology applications. Consequently, the importance of high-quality DNA/RNA extraction and purification equipment cannot be underestimated. Many purification kits are available and are typically optimized for nucleic acid type and source, including plasmid DNA, genomic DNA, mRNA, RNA and viral nucleic acid purification kits. Automated extraction and purification of nucleic acids can be implemented with magnetic bead separator instruments or high-throughput purification workstations. Find the best DNA/RNA extraction and purification equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.DNA SequencingDNA sequencing, such as sanger sequencing, is a biological technique that determines the precise order of nucleotide bases in a fragment or template of DNA. DNA sequencers and genetic analyzers are based on capillary electrophoresis, where labeled DNA fragments are electrophoretically separated by size as they migrate through a polymer. Find the best DNA sequencing products, including DNA sequencing kits, genomic libraries and genetic identity kits in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Evidence Collection and AnalysisEvidence Collection and Analysis is the retrieval and subsequent investigation into criminal evidence obtained from a crime scene. Forensic genetic instruments, kits and reagents enable the analysis of evidence collected  at the crime scene. Reagents and kits for presumptive analysis for body fluids such as blood, saliva and semen in addition to drugs and narcotics test kits are used for CSI. Fingerprinting equipment, forensic light sources, casting kits and equipment for collecting recoverable materials can be found in the directory.DNA / RNA QuantificationDetection and quantification of nucleic acids is important in molecular biology, cloning, expression, forensics and clinical diagnostics. Nucleic acids can be detected by labeling with colorimetric, fluorescent or radio labels and using in situ hybridization kits to identify specific sequences. Multiple nucleic acids can be detected and quantified at once using RNA / DNA detection beads or RNA / DNA microarrays. Find the best DNA / RNA Quantification products in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.qPCRQuantitative PCR (qPCR) is a molecular biology technique used to amplify and measure the amount of a specific DNA or RNA target. It plays a crucial role in gene expression analysis, pathogen detection, and quantifying DNA or RNA in various applications. Real-time PCR provides precise, quantitative results and is widely used in research, diagnostics, and clinical studies. Browse our peer-reviewed product directory to find the best qPCR solutions; compare products, check reviews, and get pricing directly from manufacturers.Contamination PreventionContamination prevention aims to control and minimize the risk of contamination during experiments. Biological safety cabinets and sterilization equipment are examples of technologies used to prevent contamination.Short Tandem RepeatsForensic InvestigationForensic investigation is a diverse collection of scientific techniques and methods for the identification and characterization of chemicals relating to crime scene investigations.

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Examination of Proposed Manufacturing Standards Using Low Template DNA