Novel genetic and epigenetic alterations in ... - Ous-research.no
Novel genetic and epigenetic alterations in ... - Ous-research.no Novel genetic and epigenetic alterations in ... - Ous-research.no
embedded carcinomas was analyzed in two different PCRs: the mononucleotide markers(BAT25 and BAT26) and the dinucleotide markers (D2S123, D5S346 and D17S250) wereanalyzed separately using the same PCR conditions with the exception of number of cycles(mononucleotide markers – 30 cycles; dinucleotide markers – 35 cycles). Samples whichshowed instability at more than 20% of the markers were denoted MSI-H, the ones withonly one instable marker were denoted MSI-L, while samples with no instable markers weredenoted MSS.Mutation screeningMutation analysis of the above selected target genes was performed by fragment analysis ofthe microsatellite-containing regions of each gene. With the exception of PTEN and EP300,which both had repeats of interest in two separate exons, only one fragment was investigatedper gene, yielding a total of 43 fragments, ranging from 61-236 bp in size. The fragmentswere amplified in multiplex PCRs averaging in five genes per reaction using the same PCRconditions as the pentaplex MSI-markers (see Supplementary table for primer and PCRdetails). When possible, the primer sequences were those that had been used in previousstudies – by now some gene fragments have canonical primer sequences – the remainderwere designed for this study using the Primer3 program. † Default settings were used exceptfor adjusting melting temperatures upon occasion. All primer pairs were assessed for† http://frodo.wi.mit.edu/cgi-bin/primer36
specificity, i.e. that they only amplify unique sequences of the human genome, by in silicoPCR, ‡ and for hairpin and/or primer-dimer formation at NetPrimer. §The fragments were labeled with the G5 dye set from Applied Biosystems; PET – red, NED– yellow, VIC – green, and 6-FAM – blue. The size standard used was GS500 LIZ (orange).All fragments were analyzed on a 3730 DNA Analyzer (Applied Biosystems, Foster City,CA, USA) using default Microsatellite Analysis settings in the GeneMapper3.7 software.Electropherograms were visually examined for insertions/deletions by three independentauthors, TA, ECR and MAM, against corresponding fragments from DNA from fourdifferent disease-free individuals. All assays were duplicated in tandem runs using differentPCR machines to ensure the robustness of the results.Mutation verification by sequencingIn order to determine the false discovery rate of the fragment analysis results, 18 of thegenes (ACVR2A, AIM2, ASTE1, AXIN2, BLM, EPHB2, GRK4, MBD4, PTHLH, RAD50,RBBP8, RCC2, SEMG1, SLC23A2, SYCP1, TAF1B, WISP3 and ZMYND8) weresequenced. Genomic DNA from a total of 107 samples was re-amplified with new primersincluding M13-tails, and directly sequenced in both directions on a 3730 Genetic Analyzer(Applied Biosystems). An initial PCR was performed using HotStar HiFidelity Polymerase(QIAGEN) following manufacture’s instructions in a 25μl reaction before enzymatic clean-‡ http://genome.ucsc.edu/cgi-bin/hgpcr§ http://www.premierbiosoft.com/netprimer7
- Page 86 and 87: ORIGINAL ARTICLESAPPENDIXAppendix I
- Page 89 and 90: GASTROENTEROLOGY 2007;132:1631-1639
- Page 91: Paper IbGuro E Lind, Terje Ahlquist
- Page 94 and 95: Journal of Translational Medicine 2
- Page 96 and 97: Journal of Translational Medicine 2
- Page 98 and 99: Journal of Translational Medicine 2
- Page 100 and 101: Journal of Translational Medicine 2
- Page 102 and 103: Journal of Translational Medicine 2
- Page 105: Paper IITerje Ahlquist, Guro E Lind
- Page 108 and 109: BackgroundMost cases of colorectal
- Page 110 and 111: ADAMTS1 CDKN2A CRABP1 HOXA9 MAL MGM
- Page 112 and 113: pseudogene, leading to a high rate
- Page 114 and 115: strands. Proc Natl Acad Sci U S A 1
- Page 116 and 117: concomitant absence of transcript a
- Page 119 and 120: Volume 10 Number 7 July 2008 pp. 68
- Page 121 and 122: 682 RAS Signaling in Colorectal Car
- Page 123 and 124: 684 RAS Signaling in Colorectal Car
- Page 125 and 126: 686 RAS Signaling in Colorectal Car
- Page 127: Table W2. Detailed Somatic Events o
- Page 131 and 132: Identification of RCC2 as a prognos
- Page 133 and 134: INTRODUCTIONMicrosatellite instabil
- Page 135: unselected series of primary tumors
- Page 139 and 140: On the assumption that DNA repair a
- Page 141 and 142: In order to ensure that gene mutati
- Page 143 and 144: Figure 2. Mutation frequency differ
- Page 145 and 146: and TAF1B (0.50), ACVR2A and ASTE1
- Page 147 and 148: Multivariate analysesA multivariate
- Page 149 and 150: When comparing our findings of muta
- Page 151 and 152: The test series included a low numb
- Page 153 and 154: entering M-phase remains to be seen
- Page 155 and 156: 12. Duval A, Reperant M, Hamelin R
- Page 157 and 158: 34. Martineau-Thuillier S, Andreass
- Page 159: AppendicesAppendix I:List of abbrev
- Page 163 and 164: Critical Reviews TM in Oncogenesis,
- Page 165 and 166: TARGET GENES OF MSI COLORECTAL CANC
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specificity, i.e. that they only amplify unique sequences of the human ge<strong>no</strong>me, by <strong>in</strong> silicoPCR, ‡ <strong>and</strong> for hairp<strong>in</strong> <strong>and</strong>/or primer-dimer formation at NetPrimer. §The fragments were labeled with the G5 dye set from Applied Biosystems; PET – red, NED– yellow, VIC – green, <strong>and</strong> 6-FAM – blue. The size st<strong>and</strong>ard used was GS500 LIZ (orange).All fragments were analyzed on a 3730 DNA Analyzer (Applied Biosystems, Foster City,CA, USA) us<strong>in</strong>g default Microsatellite Analysis sett<strong>in</strong>gs <strong>in</strong> the GeneMapper3.7 software.Electropherograms were visually exam<strong>in</strong>ed for <strong>in</strong>sertions/deletions by three <strong>in</strong>dependentauthors, TA, ECR <strong>and</strong> MAM, aga<strong>in</strong>st correspond<strong>in</strong>g fragments from DNA from fourdifferent disease-free <strong>in</strong>dividuals. All assays were duplicated <strong>in</strong> t<strong>and</strong>em runs us<strong>in</strong>g differentPCR mach<strong>in</strong>es to ensure the robustness of the results.Mutation verification by sequenc<strong>in</strong>gIn order to determ<strong>in</strong>e the false discovery rate of the fragment analysis results, 18 of thegenes (ACVR2A, AIM2, ASTE1, AXIN2, BLM, EPHB2, GRK4, MBD4, PTHLH, RAD50,RBBP8, RCC2, SEMG1, SLC23A2, SYCP1, TAF1B, WISP3 <strong>and</strong> ZMYND8) weresequenced. Ge<strong>no</strong>mic DNA from a total of 107 samples was re-amplified with new primers<strong>in</strong>clud<strong>in</strong>g M13-tails, <strong>and</strong> directly sequenced <strong>in</strong> both directions on a 3730 Genetic Analyzer(Applied Biosystems). An <strong>in</strong>itial PCR was performed us<strong>in</strong>g HotStar HiFidelity Polymerase(QIAGEN) follow<strong>in</strong>g manufacture’s <strong>in</strong>structions <strong>in</strong> a 25μl reaction before enzymatic clean-‡ http://ge<strong>no</strong>me.ucsc.edu/cgi-b<strong>in</strong>/hgpcr§ http://www.premierbiosoft.com/netprimer7