Aptamer-dependent full-length cDNA synthesis by overlap extension PCR

Sequencing of the human genome in combination with computational annotation has provided tremendous data on predicted genes. However, for most of them, no corresponding cDNAs are available yet. Furthermore, even where cDNA clones were obtained, gene transcripts often have many different splice varia...

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Main Authors: Yasumasa Mitani, Takayuki Nakayama, Matthias Harbers, Yoshihide Hayashizaki
Format: Article
Language:English
Published: Taylor & Francis Group 2004-07-01
Series:BioTechniques
Online Access:https://www.future-science.com/doi/10.2144/04371DD02
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author Yasumasa Mitani
Takayuki Nakayama
Matthias Harbers
Yoshihide Hayashizaki
author_facet Yasumasa Mitani
Takayuki Nakayama
Matthias Harbers
Yoshihide Hayashizaki
author_sort Yasumasa Mitani
collection DOAJ
description Sequencing of the human genome in combination with computational annotation has provided tremendous data on predicted genes. However, for most of them, no corresponding cDNAs are available yet. Furthermore, even where cDNA clones were obtained, gene transcripts often have many different splice variants that are not covered by current gene collections. For direct synthesis of cDNA clones corresponding to predicted genes, new splice variants, or any other gene of interest, we established optimal PCR conditions for the direct amplification of exons from genomic DNA, which require a specific Taq aptamer. PCR products comprising differently tagged exons were concatenated by overlap extension into full-length cDNAs. To prove the effectiveness of the approach, the 1900-bp full-length open reading frame of the human mitochondrial aldehyde dehydrogenase (ALDH2) gene was synthesized in a two-step reaction comprising all 13 exons. Thus, our conditions are of general value for in vitro synthesis of cDNAs and alternative splice variants from genomic DNA.
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spelling doaj-art-c42cc2b5f3cb4a658151a0d3da6c738a2025-08-20T02:26:07ZengTaylor & Francis GroupBioTechniques0736-62051940-98182004-07-0137112412910.2144/04371DD02Aptamer-dependent full-length cDNA synthesis by overlap extension PCRYasumasa Mitani0Takayuki Nakayama1Matthias Harbers2Yoshihide Hayashizaki31RIKEN Yokohama Institute, Yokohama1RIKEN Yokohama Institute, Yokohama2K.K. Dnaform, Tokyo1RIKEN Yokohama Institute, YokohamaSequencing of the human genome in combination with computational annotation has provided tremendous data on predicted genes. However, for most of them, no corresponding cDNAs are available yet. Furthermore, even where cDNA clones were obtained, gene transcripts often have many different splice variants that are not covered by current gene collections. For direct synthesis of cDNA clones corresponding to predicted genes, new splice variants, or any other gene of interest, we established optimal PCR conditions for the direct amplification of exons from genomic DNA, which require a specific Taq aptamer. PCR products comprising differently tagged exons were concatenated by overlap extension into full-length cDNAs. To prove the effectiveness of the approach, the 1900-bp full-length open reading frame of the human mitochondrial aldehyde dehydrogenase (ALDH2) gene was synthesized in a two-step reaction comprising all 13 exons. Thus, our conditions are of general value for in vitro synthesis of cDNAs and alternative splice variants from genomic DNA.https://www.future-science.com/doi/10.2144/04371DD02
spellingShingle Yasumasa Mitani
Takayuki Nakayama
Matthias Harbers
Yoshihide Hayashizaki
Aptamer-dependent full-length cDNA synthesis by overlap extension PCR
BioTechniques
title Aptamer-dependent full-length cDNA synthesis by overlap extension PCR
title_full Aptamer-dependent full-length cDNA synthesis by overlap extension PCR
title_fullStr Aptamer-dependent full-length cDNA synthesis by overlap extension PCR
title_full_unstemmed Aptamer-dependent full-length cDNA synthesis by overlap extension PCR
title_short Aptamer-dependent full-length cDNA synthesis by overlap extension PCR
title_sort aptamer dependent full length cdna synthesis by overlap extension pcr
url https://www.future-science.com/doi/10.2144/04371DD02
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AT takayukinakayama aptamerdependentfulllengthcdnasynthesisbyoverlapextensionpcr
AT matthiasharbers aptamerdependentfulllengthcdnasynthesisbyoverlapextensionpcr
AT yoshihidehayashizaki aptamerdependentfulllengthcdnasynthesisbyoverlapextensionpcr