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Ion torrent s5 xl

Manufactured by Thermo Fisher Scientific
Sourced in United States

The Ion Torrent S5 XL is a next-generation sequencing system designed for targeted and whole-genome sequencing applications. It utilizes semiconductor-based sequencing technology to generate DNA sequence data.

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15 protocols using ion torrent s5 xl

1

Ion Torrent Ampliseq Library Prep

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DNA libraries were prepared according to the Ampliseq Library Preparation Kit 2.0—96Lv (Thermo Fisher, San Diego, USA, MAN0006735) standard protocol using 20 ng of input DNA, with samples barcoded using Ion Xpress Barcodes 1–96 (Thermo Fisher). Prepared libraries were diluted to 26 pM using MilliQ water and combined into four samples pools, for sequencing on four 318 chips. Twenty-five microliters of each sample pool was enriched using a One-Touch Two (OT2) machine and automated enrichment system (Thermo Fisher) with the Ion PGM Template OT2 400 Kit (Thermo Fisher) to prepare Template-positive Ion Sphere Particles. Enriched products were prepared for sequencing using the Ion Personal Genome Machine (PGM) Hi-Q Sequencing Kit and run on the Personal Genome Machine using the Ion 318 chip v2 (Thermo Fisher, MAN0009816). In parallel, libraries for each sample were diluted to 70 pM and loaded onto an Ion Chef for sequencing on an Ion Torrent S5 XL using an Ion 530 chip (Thermo Fisher, MAN0010851) (Fig 1).
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2

Avian RT-PCR Amplicon Sequencing

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The purified avian RT-PCR amplicons were sequenced on the IonTorrent platform (Thermo Fisher Scientific) as previously described [5 (link), 10 (link)]. Before library preparation for the respective platform, the samples were mechanically fragmented to a 500 bp size on a Covaris M220 Ultrasonicator (Covaris Ltd., Brighton, UK). The GeneRead DNA L Core Kit (Qiagen) was subsequently used for library preparation with Xpress Barcode Adapters (Qiagen). After a following size selection and clean-up step with AMPure XP Beads (Beckman Coulter), the final library was quality checked on an Agilent Bioanalyzer 2100 (Agilent Technologies, Böblingen, Germany) and quantized via qPCR with the KAPA Library Quantification Kit (Roche, Mannheim, Germany). Sequencing was conducted on the IonTorrent S5XL (Thermo Fisher Scientific) in combination with the Ion OneTouch 2 System (Thermo Fisher Scientific), encompassing twelve AIV samples per Ion 530 Chip (Thermo Fisher Scientific).
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3

Whole-Genome Sequencing of STEC Strains

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DNA extracted from the two Swedish STEC strains was analyzed using the Ion Torrent S5 XL platform (Thermo Fisher Scientific, Waltham, Massachusetts, USA) as previously described [11 (link)]. The sequencing reads were de novo assembled with Spades (v3.13.1) [12 (link)] in “careful mode” to correct mismatches. The Danish strain was sequenced using an Illumina Nextseq (Illumina, San Diego, CA, USA) as previously described [13 (link)]. The sequencing reads were de novo assembled with SKESA (version 2.3.0) with default settings [14 (link)].
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4

RNA-seq from patient 343VY

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Samples for RNA-seq from patient 343VY were prepared as previously described [13 ]. Briefly, cells were harvested by LMD into Buffer RLT with β-mercaptoethanol and RNA isolated using the RNeasy Micro Kit (Qiagen) per the manufacturer’s instructions. RNA concentrations were determined by fluorescence (Qubit HS and BR kits, ThermoFisher Scientific, Inc.). RNA integrity numbers (RIN) were determined using the RNA 6000 Pico Kit 2100 Bioanalyzer (Agilent Technologies, Inc.); RIN values were > 6 for all levels and collection types. RNA samples were reverse transcribed to generate barcoded cDNA libraries that were sequenced on the Ion Torrent S5 XL (ThermoFisher Scientific, Inc.). Barcoded cDNA libraries contained 6 LMD RNA samples, a Universal Human Reference RNA (UHR) standard (Stratagene), and a no-template control (NTC) water blank. Successful sequencing runs achieved an average of 18 M reads/sample (with one exception) and 167-205X AQ20 mean coverage depth.
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5

Molecular profiling of B-cell lymphomas

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Tumor specimens for molecular analysis were available for 72 patients. As detailed elsewhere [36 (link)], somatic mutations were detected by targeted high-throughput sequencing (HTS) using a target enrichment panel covering either mutational hotspots or all exons of 68 genes most frequently mutated in B-cell lymphomas. Sequencing was performed by the Ion Torrent S5 XL machine (Thermo Fisher Scientific, Carlsbad, CA, USA).
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6

Targeted NGS of FFPE Tumor Tissue

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Targeted next-generation sequencing (NGS) was performed using formalin-fixed paraffin-embedded (FFPE) tumor tissue. Hematoxylin and eosin (H&E)-stained slides were reviewed, and the tumor area with enough viable tumor cells was marked and used as a guide for macrodissection. Areas with greater than 50% tumor volume were used for examination. In brief, total nucleic acid was isolated from FFPE tumor tissue using a RecoverAll Total Nucleic Acid Isolation Kit for FFPE (Ambion, Austin, TX, USA), according to the manufacturer’s specifications. The samples were analyzed using the Oncomine Comprehensive Assay Cancer Panel (Ion Torrent S5 XL, Thermo Fisher Scientific, MA, USA) which covers 2,737 amplicons (2530 DNA + 207 RNA) within 143 cancer-related genes. The percentage of amplicons covered was 95%. Reads were aligned to the hg19 reference genome, and variants with allele frequencies less than 3% were excluded. The Oncomine Comprehensive Assay Cancer Panel included 15 amplicons located in PIK3CA exons 1, 2, 3, 4, 6, 7, 9, 13, 18, 19, and 20.
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7

FFPE Tumor Sequencing Protocol

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The nucleic acids were extracted with the Maxwell RSC DNA FFPE kit (Promega, Madison, WI, USA) from formalin-fixed, paraffin-embedded (FFPE) tumor samples. For amplification screening, we used our custom panel Oncomine Solid Tumor and Oncomine Solid Tumor+ (OST/OST+), which includes EGFR. For all clinical samples, we performed sequencing with Ion Torrent S5XL (ThermoFisher Scientifics, Waltham, MA, USA) with a sensitivity of 5% and a minimum coverage of 500×. Then, data were analyzed through two complementary pipelines. The first pipeline was developed by ThermoFisher on the IonTorrent Suite + Ion Reporter. The second pipeline, which was developed in our laboratory, uses open-source software such as BWA-MEM for alignment, SAMtools for mpileup, VarScan2 as the variant caller and VEP Ensemble for annotations.
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8

Liquid Biopsy in NSCLC Patients

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During April 2017 and August 2017, peripheral whole blood was collected from 12 non-small cell lung cancer patients during ongoing treatment, five before initiation of first line systemic therapy (Samples P2-P5), one after post-surgery (P1) and six patients after first line systemic therapy (S1-S6). All patients harboured an activating mutation either in the EGFR or KRAS gene (Table 1). The activating mutation had already been analysed from FFPE tissue during routine diagnostics prior to blood sampling using targeted sequencing with the AmpliSeq Colon Lung Panel v2 on the Ion Torrent S5XL instrument (Thermo Scientific, Waltham, USA). Only Sample S5 was analyzed by pyrosequencing as NGS was not practiced in our institute at the time point of first diagnosis in 2010 and no more tissue or DNA was left to retest the latter with NGS methods.
Informed consent was obtained from each patient with protocols approved by an ethical committee.
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9

Ion Torrent RNA Sequencing Library Prep

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Ion Torrent Libraries were generated using the Ion AmpliSeq Library Kit 2.0 (Thermo Fisher, Waltham, MA) according to manufacturer's instructions using 10 ng input material. RNA was first reverse transcribed with SuperScript IV VILO (Thermo Fisher, Waltham, MA). Following cleanup, libraries were quantitated using qPCR on a QuantStudio 6 (Thermo Fisher, Waltham, MA), normalized to 100 pM, and loaded onto the IonChef (Thermo Fisher, Waltham, MA). Pooled libraries were loaded onto the Ion 540 Chip (Thermo Fisher, Waltham, MA) and sequenced on the Ion Torrent S5XL (Thermo Fisher, Waltham, MA).
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10

Multimodal Profiling of Tumor Samples

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DNA and RNA were co-extracted from each sample and processed for gene expression by RNA-seq and TMB by DNA-seq, as previously described [9 (link)]. Nucleic acids were quantitated by Qubit fluorometer (Thermo Fisher Scientific) using ribogreen staining for RNA and picogreen staining for DNA. Gene expression were evaluated by RNA sequencing of 395 transcripts on samples that met validated quality control (QC) thresholds [9 (link)]. TMB was measured by DNA sequencing of the full coding region of 409 cancer related genes as non-synonymous mutations per megabase (Mut/Mb) of sequenced DNA on samples with > 30% tumor nuclei. RNA and DNA libraries were sequenced to appropriate depth on the Ion Torrent S5XL sequencer (Thermo Fisher Scientific).
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