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Quantifiler duo dna quantification kit

Manufactured by Thermo Fisher Scientific
Sourced in United States

The Quantifiler® Duo DNA Quantification Kit is a real-time PCR-based assay designed to quantify the amount of human and male-specific DNA in forensic samples. The kit provides a sensitive and reliable method for determining the DNA concentration and quality, enabling efficient downstream processing of samples for forensic DNA analysis.

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17 protocols using quantifiler duo dna quantification kit

1

DNA Methylation Quantification by MagMeDIP qPCR

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The DNA methylation of the cells from the cell cultures was analyzed using MagMeDIP qPCR Kit (Diagenode, Denville, NJ, USA) according to the manufacturer’s protocol. After precipitation and DNA extraction, DNA concentration was measured, using Pico488 dsDNA quantification reagent (Lumiprobe, Cockeysville, MD, USA). The standard curve was prepared from human DNA quantified by Quantifiler™ Duo DNA Quantification Kit (Thermo Fisher, Waltham, MA, USA). The global DNA methylation was quantified as the percentage of DNA immunoprecipitated using C-me antibodies (Diagenode, Denville, NJ, USA) to the input amount of DNA, based on the concentration results. The site-specific DNA methylation was analyzed in Real-Time PCR, using Fast SYBR Green Master Mix (Thermo Fisher, Waltham, MA, USA). The primer sequences are presented in Table 1. The promoter region of the IL10 gene was the target of primers. The calculation of % of the input was done according to the manufacturer’s protocol. The following formula was used:
where, CtInput—Ct value of 10% Input; CtCme—Ct value of precipitated DNA using Cme antibody.
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2

Quantification of DNA Methylation

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DNA methylation was analyzed using the MagMeDIP qPCR Kit (Diagenode, Denville, NJ, USA) according to protocol. After precipitation and DNA extraction, the DNA concentration was measured using Pico488 dsDNA quantification reagent (Lumiprobe, Hannover, Germany). The standard curve was prepared using human DNA quantified by the Quantifiler™ Duo DNA Quantification Kit (ThermoFisher Scientific). Global DNA methylation was calculated as the percentage of DNA immunoprecipitated using Cme antibodies (Diagenode) to the input amount of DNA. The site-specific DNA methylation was analyzed in real-time PCR using the Fast SYBR Green Master Mix (ThermoFisher Scientific). The primer sequences are presented in Table 1. The calculation of percent of input was performed according to the manufacturer protocol:
CtIN—Ct value of 10% input; CtIP—Ct value of immunoprecipitated samples].
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3

Probabilistic Genotyping of Complex DNA Mixtures

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According to manufacturer recommended protocols, reference profiles and standard bulk mixture samples were extracted using the QIAamp DNA Ivestigator Kit (QIAGEN, Germantown, MD, USA) and quantified using Quantifiler® Duo DNA Quantification kit (ThermoFisher Scientific, Carlsbad, CA, USA) on the Applied Biosystems’ 7500 real-time PCR instrument (ThermoFisher Scientific, Carlsbad, CA, USA). One nanogram of DNA extracts were amplified using the GlobalFilerTM amplification kit (ThermoFisher Scientific, Carlsbad, CA, USA) at 29 PCR cycles. Probabilistic genotyping of donor references profiles and complex equimolar 2-6 person mixtures was conducted using STRmix™ v2.8 and EuroForMix v3.1.0 (Quantitative LR MLE based) according to the known NOC.
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4

Automated Buccal DNA Extraction

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DNA extraction was conducted on reference buccal swabs and 60 μL of each mixture cell suspension using the AutoMate Express™ Forensic DNA Extraction System (ThermoFisher Scientific, Carlsbad, CA, USA). Each extraction set contained an extraction blank and was quantified with the Quantifiler® Duo DNA Quantification kit (ThermoFisher Scientific, Carlsbad, CA, USA) using the Applied Biosystems’ 7500 real-time PCR instrument (ThermoFisher Scientific, Carlsbad, CA, USA).
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5

Genomic DNA Extraction from Whole Blood

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Phenolchloroform extraction was performed to extract genomic DNA from whole blood samples (n=181). The extracted DNA samples were quantified using a Quantifiler® Duo DNA Quantification Kit (Thermo Fisher Scientific, USA) in accordance with the manufacturer’s protocol. Quantified DNAs were normalized to the concentration of 1.0 ng/μl and then taken for PCR amplification.
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6

Plasma cfDNA Extraction and Quantification

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Peripheral blood was collected from participants in 2 mL EDTA-containing tubes, and plasma and buffy coat fractions were isolated within 6 h of collection. The plasma samples were stored at −20 °C pending analysis. cfDNA isolation and genomic DNA extraction from peripheral blood leukocytes (as internal control) were isolated using a QIAamp® DNA Mini Kit according to the manufacturer’s instructions (Qiagen, Hilden, Germany), and stored at −20 °C until processing. The extracted DNA was quantified by NanoDrop™ and real-time PCR using a Quantifiler® Duo DNA Quantification Kit according to the manufacturer’s instructions (Thermo Fisher, Riyadh, Saudi Arabia).
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7

Quantitative Real-Time PCR DNA Quantification

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Two‐microliter aliquots from each extracted DNA sample were quantified by Real‐Time PCR using the Quantifiler Duo DNA Quantification kit (Thermo Fisher Scientific, USA) in duplicate assays, following the manufacturer's recommendations, on a 7500 Real‐Time PCR System (Thermo Fisher Scientific, USA). Calibration was performed in duplicate using DNA standards at different concentrations (from 23 pg/μl to 50 ng/μl). Positive controls represented by commercially available DNAs with certified concentration (2800M Control DNA ‐ cat. number D 7101, Promega, USA; AmpFℓSTR™ DNA Control 007 ‐ cat. Number 100028107, Applied Biosystems, USA) were used. Blank controls of the DNA extraction procedure and of the qPCR assay (no template controls) were included in the experiments.
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8

DNA Quantification and Degradation Analysis

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For all samples prepared for sequencing on the PGM (except bone), the Quantifiler Human Plus DNA Quantification Kit (Thermo Fisher Scientific) was used to quantify the amount of DNA extracted as well as to estimate the state of DNA degradation. Data analysis of the analytical results from the qPCR analysis provides a Degradation Index (DI). The DI is a ratio comparing the quantity of a small autosomal target (80 bp) to that of a large autosomal target (214 bp), and is used to infer the level of DNA degradation. For samples prepared for sequencing on the S5, the Quantifiler Duo DNA Quantification Kit (Thermo Fisher Scientific) was used for DNA quantification. All samples, regardless of quantification kit, were diluted to appropriate concentrations prior to library preparation and stored at 4 °C.
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9

Genomic DNA Extraction from Blood

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The collected blood samples were subjected to phenol-extraction method and genomic DNA was extracted. After extraction, they were quantified using Quantifiler® Duo DNA Quantification Kit (Thermo Fisher Scientific, Foster City, CA, USA) as per the manufacturer's protocol.
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10

RNA Extraction and Purification Protocol

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Oczyszczone po traktowaniu DNAzą ekstrakty RNA oceniano spektrofotometrycznie z wykorzystaniem aparatu DS-11 (DeNovix).
Obecność zanieczyszczeń RNA w postaci DNA oceniano z wykorzystaniem zestawu Quantifiler® Duo DNA Quantification Kit (Thermo Fisher Scien-Buffer (Roche Diagnostics) at room temperature for 30 minutes. In the next step, they were placed in a filtration column (High Pure Filter Tube (Roche Diagnostics)) and treated with DNAse, producing RNA according to the protocol specified by the manufacturer of the High Pure RNA Isolation Kit (Roche Diagnostics). RNA was suspended in 50 µl of the Elution Buffer (Roche Diagnostics).
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