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10 protocols using abi prism 3130 dna analyzer

1

Molecular Identification of Fusarium Isolates

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The strains were grown in yeast extract sucrose (YES) agar [44 (link)] for 3 days at 25 °C. The DNA was extracted using DNeasy Plant Mini Kit (Qiagen, Hilden, Germany) according to the manufacturer’s instructions.
The partial sequences of elongation factor (EF-1α) and the second fragment of RPB2 (7CF/11AR) were selected in order to identify the Fusarium isolates. The amplification of the EF-1α and RPB2 loci were performed according to [45 (link),46 (link)]. Amplicons were purified with ExoSAP-IT (Affymetrix, Santa Clara, CA, USA) and sent to the Centre of Human Genome Studies, University of Sao Paulo, Brazil for sequencing in ABI PRISM 3130 DNA Analyzer (Applied Biosystems, Foster City, CA, USA).
Sequences were aligned using the multiple alignment software ClustalX v. 1.83 plug-in in the software Geneious v. 5.3.6 (Biomatters, Auckland, New Zealand). The alignments were edited using the sequence alignment-editing program Geneious v. 1.83 and each polymorphism was re-examined by checking the chromatograms. The sequences generated in this study were deposited in the GenBank (Table 1 and Table S1).
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2

Microsatellite Instability Detection Protocol

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Detection of microsatellite instability was done through polymerase chain reaction and fragment analysis of a mononucleotide repeat pentaplex panel to identify alterations of repetitive tandem regions as previously described [25 (link)]. Briefly, in-house primers used the following sequences for SLC7A8, NR21-Fw: 5′-TAAATGTATGTCTCCCCTGG-3′, NR21-Rv: 5′-ATTCCTACTCCGCATTCACA-3′, ZNF-2, NR-24-Fw: 5′-CCATTGCTGAATTTTACCTC-3′, NR-24-Rv: 5′-ATTGTGCCATTGCATTCCAA-3′, inhibitor of apoptosis protein-1 NR-27-Fw: 5′-AACCATGCTTGCAAACCACT-3′, NR-27-Rv: 5′-CGATAATACTAGCAATGACC-3′, c-KIT BAT-25-Fw: 5′-TACCAGGTGGCAAAGGGCA-3′, BAT-25-Rv: 5′-TCTGCATTTTAACTATGGCTC-3′ and MSH2 BAT-26-Fw: 5′-TGACTACTTTTGACTTCAGCC-3′, BAT-26-Rv: 5′-AACCATTCAACATTTTTAACCC-3′) for multiplex amplification of purified DNA. Resulting amplicons were sequenced on the ABI-Prism 3130 DNA analyzer (Applied Biosystems, Foster City, CA, USA). Fragments were analyzed with the Peak ScannerTM 2 software (ThermoFisher Scientific, Waltham, MA, USA) and instability assessment was defined as a loss of stability in two or more repeats out of the five microsatellite markers [26 (link)].
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3

DNA Extraction and Genetic Analysis Protocol

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Peripheral blood in ethylene diamine tetraacetic acid-containing (EDTA) collection tubes was used to extract genomic DNA (standard phenol-cloroform method). DNA was amplified using the polymerase chain reaction (PCR): PCR mix (50 μL) contained 200 ng of genomic DNA, 1.5 μL of 10 pmol primers, 5 μL of buffer 10x, 1.5 μL of MgCI2 50 mmol, 1 μL of 40 mmol dNTP and 2.5 U of Taq polymerase enzyme (Invitrogen Corp., Carlsbad, CA, USA). PCR products were analyzed on SYBR-Safe 3% agarose gel and displayed to the ultraviolet lamp. PCR products were sequenced bidirectional directly using Big-Dye terminator 3.1 cycle sequencing kit and run on ABI PRISM 3130 DNA analyzer (Applied Biosystems, Foster City, CA). Primers used for PCR and sequencing were designed in our laboratory (Table 2). Mutations in KLF-1 were detected by DNA sequencing of exon 2; mutations of BCL11A were found by sequencing of the 5 exons and the two intronic regions containing SNP rs11886868 and rs4671393. For the analysis of GATA1 gene the entire codifying region (6 exons) was sequenced. Also the XmnI genotype was obtained by XmnI enzymatic restriction. The PCR conditions will be made available upon request.
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4

Molecular Serotyping of E. coli

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Molecular serotyping was performed on all E. coli isolates using PCR to detect the serogroup O157 and the H7 antigen (Table 1). The obtained PCR products were sequenced using an ABI PRISM 3130DNA Analyzer and the data were processed with the Sequencing Analysis 3.3 software (Applied Biosystems).
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5

Sanger Sequencing of PCR Products

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After purification with Thermo Fisher Scientific PCR ExoSAP-ITTM (Waltham, MA, USA), HRM products were sequenced using Applied Biosystems Big Dye Terminator v1.1 and v3.1 kits (Applied Biosystems, Foster City, CA, USA) and an ABI PRISM 3130 DNA Analyzer (Applied Biosystems, Foster City, CA, USA). The obtained sequences were analyzed with BioEdit v.7.2 software (Ibis Biosciences, Carlsbad, CA, USA) and the NCBI Nucleotide Blast platform (Blastn) [26 ]. Nucleotide sequences were translated using the translate tool in the ExPASy Bioinformatics Resource Portal [27 ]. Whenever a sequence variant was found, the sample was sequenced again from the opposite direction to confirm the nucleotide change.
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6

DNA Sequencing and BLAST Analysis

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PCR products were cleaned up with centrisep columns (Applied Biosystems, Foster, CA) and were directly sequenced with dye termination chemistry by means of the BigDye Terminator Cycle Sequencing System using an ABI PRISM 3130 DNA Analyzer (Applied Biosystems Inc, USA). DNA sequences were subsequent BLAST searching (http://blast.ncbi.nlm.nih.gov/).
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7

PCR Amplification and Sequencing Protocol

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PCR reactions were performed using 25–50 ng of genomic DNA, 300 nM primers, 200 μM dNTPs, 2 mM MgCl2, and 1.25 units of AmpliTaq Gold (Applied Biosystems) in 1× PCR Buffer II (Applied Biosystems) in a volume of 50 μl. PCR products were purified with the Millipore Vacuum Manifold filter system and sequenced (BigDye Terminator v3.1 Cycle Sequencing Kit, Applied Biosystems) on the ABI PRISM 3130 DNA Analyzer (Applied Biosystems).
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8

Identifying Genetic Cause of Recessive Inherited PCL

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To identify the genetic cause of recessive inherited PCL, we performed whole-exome sequencing on 2 affected (II-2a and II-3a) and 3 nonaffected members (I-1a, I-2a, and II-1a) of family A, and 1 affected (II-1b) and 2 nonaffected members (I-1b and I-2b) of family B (figure 2A). Genetic and bioinformatics analysis was performed according to the procedure as described.22 (link)– (link)24 (link) Candidate mutations were validated by Sanger sequencing on an ABI Prism 3130 DNA Analyzer (Applied Biosystems). Within-family IBA57 variant segregation was analyzed using primers designed to amplify exons corresponding to the sequence under accession number NG_042231—PCR conditions, and primer sequences are available upon request.
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9

Genetic Analysis of IRS1 PI3K-Binding Sites

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Genomic DNA was isolated using a Macherey-Nagel extraction kit. Genetic analysis
of DNA covering PI3K-binding sites of IRS1 was performed by PCR. The following
primers were used: Primer 1/1 (forward, 5’ggaggtgg cagtggaggccgactgcc3’;
reverse, 5’cctcagggccgtagtagcag tc3’) Primer 1/2(forward,
5’ctggagcccagccttccacatc3’; reverse, 5’ccctgggcaggctcacctcctc3’). PCR was
performed in a total volume of 25 μL, containing 1x Qiagen Taqpolymerase buffer (Qiagen, Germany), 2 mM MgCl2, 6 mM dNTPs, 0.5 μM
of each primer, 0.2 units Qiagen Taq DNA polymerase and 50 ng
genomic DNA. PCR conditions were 5 min at 94 °C, followed by 35 cycles of 94 °C
for 30 s, 58 °C for 1 min, 72 °C for 45 s, and one step of 72 °C for 10 min. PCR
products were purified using a PCR Purification Kit (Invitrogen Carlsbad, CA),
and the Big dye-terminator sequencing kit (Applied Biosystems, Foster City, CA)
was used during amplification. Sequencing fragments were analysed by using an
ABI Prism 3130 DNA analyzer (Applied Biosystems). Sequence chromatograms were
analyzed by Finch TV.
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10

Influenza Virus Genome Sequencing

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Viral RNA was extracted from the culture supernatant of MDCK cells infected with each virus by using a QIAamp Viral RNA Mini Kit (QIAGEN, Hilden, Germany). The first-strand cDNA was synthesized by using Uni12 primer [16 (link)] and a SuperScript III (Invitrogen, Carlsbad, CA, USA). PCR was carried out with Phusion High-Fidelity DNA polymerase (NEB, Ipswich, MA, USA) and primer sets specific for A(H1N1) virus to amplify the viral genes of the Japanese isolates and the CA04/09 virus from the synthesized cDNA. The primer sequences used are shown in Table S2. The PCR products were purified with a gel extraction kit (QIAGEN, Hilden, Germany) and sequenced with a BigDye Terminator version 3.1 Cycle Sequencing Kit (Applied Biosystems, Foster City, USA) on an ABI PRISM 3130 DNA analyzer (Applied Biosystems, Foster City, USA).
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