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Validation of whole genome amplification for analysis of the p53 tumor suppressor gene in limited amounts of tumor samples
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2012 (Engelska)Ingår i: Biochemical and Biophysical Research Communications - BBRC, ISSN 0006-291X, E-ISSN 1090-2104, Vol. 425, nr 2, s. 379-383Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Personalized cancer treatment requires molecular characterization of individual tumor biopsies. These samples are frequently only available in limited quantities hampering genomic analysis. Several whole genome amplification (WGA) protocols have been developed with reported varying representation of genomic regions post amplification. In this study we investigate region dropout using a 929 polymerase based WGA approach. DNA from 123 lung cancers specimens and corresponding normal tissue were used and evaluated by Sanger sequencing of the p53 exons 5-8. To enable comparative analysis of this scarce material, WGA samples were compared with unamplified material using a pooling strategy of the 123 samples. In addition, a more detailed analysis of exon 7 amplicons were performed followed by extensive cloning and Sanger sequencing. Interestingly, by comparing data from the pooled samples to the individually sequenced exon 7, we demonstrate that mutations are more easily recovered from WGA pools and this was also supported by simulations of different sequencing coverage. Overall this data indicate a limited random loss of genomic regions supporting the use of whole genome amplification for genomic analysis.

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2012. Vol. 425, nr 2, s. 379-383
Nyckelord [en]
Whole genome amplification, TP53, Mutations, Validation
Nationell ämneskategori
Biokemi och molekylärbiologi
Identifikatorer
URN: urn:nbn:se:su:diva-81576DOI: 10.1016/j.bbrc.2012.07.101ISI: 000308384400044OAI: oai:DiVA.org:su-81576DiVA, id: diva2:563158
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AuthorCount:9;

Tillgänglig från: 2012-10-29 Skapad: 2012-10-25 Senast uppdaterad: 2022-03-23Bibliografiskt granskad

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Huss, Mikael

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Huss, Mikael
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Institutionen för biokemi och biofysik
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Biochemical and Biophysical Research Communications - BBRC
Biokemi och molekylärbiologi

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