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15 protocols using pyromark q96 instrument

1

Pyrosequencing for DNA Methylation Analysis

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The differential DNA methylation of candidate genes was validated in 16 NSCL and 15 healthy lip tissue samples by pyrosequencing. Genomic DNA was extracted and bisulfite-converted using an EpiTect Plus DNA Bisulfite Kit (Cat No. 59104, Qiagen, Germany) and EpiTect Bisulfite Kit (Qiagen), following manufacturer's protocols. PCR was performed using the conversed DNA samples as templates. Ten microliters of PCR products were analyzed on the PyroMark Q96 instrument (Qiagen). The primers used for pyrosequencing are listed in Table 2.
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2

Targeted Bisulfite Pyrosequencing for DNA Methylation

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DNA extraction and sodium bisulfite treatment were performed in the same manner as above for WGBS sample processing. Bisulfite pyrosequencing primers were designed using PyroMark Assay Design software (Qiagen, Hilden, Germany) to target CpGs within DMRs from the male replication comparison. Bisulfite-converted DNA from each sample was amplified in triplicate for each primer set using the PyroMark PCR kit (Qiagen, Hilden, Germany) according to the manufacturer’s instructions, except using 50 ng of bisulfite-converted DNA and 40 PCR cycles. Each PCR product was checked with gel electrophoresis for specific amplification. Pyrosequencing was conducted using PyroMark Gold Q96 SQA Reagents (Qiagen, Hilden, Germany) with the PyroMark Q96 instrument (Qiagen, Hilden, Germany) according to the manufacturer’s instructions. Mean percent methylation for each region was compared to diagnosis outcome using linear regression and compared to WGBS methylation using Pearson’s r.
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3

Allele-Specific ChIP Analysis of Kcnk9

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For allele-specific ChIP analysis, DNA of WT and Kcnk9KOmat (C57BL/6JxCast/Ei)F1 hybrid mice, treated either with DMSO or CI-994, was amplified in a PCR applying one non-biotinylated forward primer: 5′-AAATTCGCCGGTTCCTTCTAC-3′ and one biotinylated reverse primer: 5′-GAGATGTAGCGCACACGAAGC-3′. To distinguish the origin of the alleles we subsequently analyzed the PCR products in an allele-specific manner, using two neighboring SNPs, rs240891437 and rs47242380 (Ensembl; GRCm38.p5). The quantification of enrichment was performed using the pyrosequencing technique. A Kcnk9-specific pyrosequencing primer: 5′-AAGGAATGGGTGTGC-3′ was designed and pyrosequencing was carried out on a PyroMark Q96 instrument (Qiagen).
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4

Pyrosequencing Analysis of ANXA2 Methylation

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Genomic DNA was extracted from tissues and cell lines using all Prep DNA/RNA/Protein mini kit (Qiagen) and quantified using NanoDrop2000c (Thermo Scientific). For pyrosequencing, genomic DNA was bisulfite modified using the EZ DNA methylation gold kit (The Epigenetics company) according to the manufacturer's instructions. Pyrosequencing analysis was performed using a PyroMark Q96 instrument (Qiagen), following the manufacturer's protocol. The following primers were used: ANXA2-pyr-for GGGTAGGGGTGAGTTATTTTTGATTT, ANXA2-pyr-rev biotin- ACAAAACCCAC- TAACCTAAATAAAACTTTTATACC, ANXA2-pyr-seq GGGTAGGGGTGAGTTATTTTTGATTT. The results were analyzed by PyroMark CpG software (Qiagen). The methylation index for each sample was calculated as the average value of CpG methylation in the CpG examined.
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5

DNA Methylation Analysis by MSP and Pyrosequencing

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Genomic DNA was isolated using QIAamp DNA Mini Kit (Qiagen) and bisulfite modification of the genomic DNA was carried out using an Epitect Bisulfite Kit (Qiagen) according to the manufacturer’s instructions. Methylation Specific PCR (MSP) primers were designed with Methprimer (http://epidesigner.com). Pyrosequencing for five CpG sites in the promoter region was performed on a PyroMark Q96 instrument (Qiagen) according to manufacturer’s protocol, as described previously [23 (link)]. Record was analyzed by the manufacturer’s software. All the primer sequences were listed in Additional file 1: Table S1.
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6

Quantifying LINE-1 DNA Methylation

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Plasma DNAs were isolated using QIAmp UltraSense Virus Kits (Qiagen, Valencia, CA). Aliquots of DNA (500 ng) were bisulfite-treated with the EZ DNA methylation kit (Zymo Research, Orange, CA) following the manufacturer’s protocol. Pyrosequencing for LINE-1 methylation levels was carried out using PCR and sequencing primers as described previously [5 (link)]. Briefly, PCR was carried out in a 25 μl reaction mix containing 50 ng bisulfite-converted DNA, 1X Pyromark PCR Master Mix (Qiagen), 1X Coral Load Concentrate (Qiagen) and 0.2 μM forward and reverse primers. Following amplification, the biotinylated PCR products were purified and incubated with the sequencing primer designed to bind adjacent to the CpG sites of interest. Pyrosequencing was conducted using a PyroMark Q96 instrument (Qiagen), with subsequent quantitation of methylation levels determined with the PyroMark CpG 1.010 software. Relative peak height differences were used to calculate the percentage of methylated cytosines at each given site. Percent methylation within a sample was subsequently determined by averaging across all three interrogated CpG sites in the analysis.
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7

Analysis of ZBTB18 promoter methylation

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Genomic DNA from tissues and cell lines was bisulfite modified using the EZ DNA methylation–gold kit (The Epigenetics Company) according to the manufacturer's instructions. A pool of normal brain tissues or glioma samples were subjected to PCR to amplify ZBTB18 promoter CpG islands using PyroMark PCR kit (Qiagen) and primers summarized in Supplementary Table 3. Non-CpG containing primers, methylation-specific primers (MSP) and un-methylation-specific primers (USP) were designed to cover the entire region. PCR products were cloned into pDrive cloning vector (Qiagen) and submitted for sequencing with SP6 primer and T7 primer (GATC).
Pyrosequencing analysis was performed using a PyroMark Q96 instrument (Qiagen), following the manufacturers protocol. Primers are summarized in Supplementary Table 3. The results were analyzed by PyroMark CpG software (Qiagen). The methylation index for each sample was calculated as the average value of CpG methylation in the CpG examined.
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8

DNA methylation analysis of TXNIP gene

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We extracted genomic DNA from the skeletal muscle biopsies using the DNeasy blood and tissue Kit, from the SAT biopsies using the QIAamp DNA Mini Kit, and from blood (buffy coats) using the QIAamp 96 DNA blood kit (all Qiagen). A total of 10–40 mg SAT and skeletal muscle tissue was used to extract 500 ng (skeletal muscle and blood) and 400 ng (SAT) DNA, respectively, which was then bisulfite converted using the EpiTect Bisulfite Kit (Qiagen). DNA methylation was then measured at CpG site cg19693031, located in the 3’UTR region approximately 3000 base pairs downstream from the TXNIP transcription start site, using bisulfite pyrosequencing. Methylation differences at this CpG site may alter the binding affinity of methylation-sensitive transcription regulators [16 (link)]. PyroMark Assay Design 2.0 software was used to design primers, and pyrosequencing of the PCR products was performed with the PyroMarkQ96 instrument (Qiagen). Primer sequences were as follows: forward primer, 5´-TGTTTGTTGGATGGGTTTAAAAATAATT-3´, reverse primer (biotinylated), 5´-AAACCTCCAAAAAACCTTAAAAAACTT-3´, sequencing primer, 5´GGGTTAGGTAAAAATGG -3´.
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9

Methylation Analysis by Pyrosequencing

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The bisulfite converted DNA was amplified using Hotstart Plus DNA polymerase (Qiagen). PCR products were immobilized on streptavidin-sepharose beads (GE Healthcare), washed, denatured, and released into annealing buffer containing sequencing primer, which is described in Supplementary Table 2. Pyrosequencing was carried out on a PyroMark Q96 instrument (Qiagen) according to the manufacturer's instructions. Percent methylation was calculated using the Pyro Q CpG software (Qiagen).
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10

Bisulfite Analysis of Peg13 DMRs

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Approximately 500 ng DNA was subjected to sodium bisulfite treatment and purified using the EZ DNA Methylation Direct™ kit (Zymo Research). Bisulphite PCR primers for the Peg13-DMR1 and Peg13-DMR2 (located from +195 to +833 bp relative to the 5′ end of the Peg13 transcript) were designed using the Pyrosequencing Assay Design Software (Qiagen). PCR amplification was performed with 1 μg bisulfite converted DNA and specific primers at 42 cycles in a bisulfite PCR analysis. We amplified two CpG-rich regions, Peg13-DMR1 and Peg13-DMR2, associated with the mouse Kcnk9 gene regulation with the following primers: Peg13-DMR1, forward 5′-TTGGATGAGTTATTATATAAGGTTTAAAA-3′ and reverse 5′-ACAACTACCTACATTCCAAATCT-3′-biotinylated (product size: 175 bp), sequencing 5′-AAATTTTAATAAGATGGGTTAAT-3′. Peg13-DMR2, forward 5′-AGATTTGGAATGTAGGTAGTTGTGA-3′ and reverse 5′-CCTCAATAAAACCATTCTAATCAACTAT-3′-biotinylated (product size: 198 bp), sequencing 5′-GGTAATTTGTTAGGTGGAGATATA-3′. The pyrosequencing was carried out on the PyroMark Q96 instrument (Qiagen).
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