A PCR/restriction digestion assay for the detection of the transcript variants 1 and 2 of POU5F1.
(2008) In Genes, Chromosomes and Cancer 47. p.521-529- Abstract
- POU5F1 has two alternatively spliced transcripts: a long (variant 1, NM_002701) and a short (variant 2, NM_203289) transcript. Only variant 1 is a key regulator of pluripotency. Hence, it is important to be able to distinguish this transcript from variant 2 and from the many pseudogenes present in the genome. Previous studies on the expression of POU5F1 were, however, usually carried out without considering the existence of the two transcripts and the pseudogenes which could be the source of false positive RT-PCR amplification. Here, we establish an RT-PCR/restriction digestion analysis to distinguish variant 1 of POU5F1 from variant 2 and all its currently known pseudogenes. Variant 1 has ApaI and Tsp45I restriction sites, which are not... (More)
- POU5F1 has two alternatively spliced transcripts: a long (variant 1, NM_002701) and a short (variant 2, NM_203289) transcript. Only variant 1 is a key regulator of pluripotency. Hence, it is important to be able to distinguish this transcript from variant 2 and from the many pseudogenes present in the genome. Previous studies on the expression of POU5F1 were, however, usually carried out without considering the existence of the two transcripts and the pseudogenes which could be the source of false positive RT-PCR amplification. Here, we establish an RT-PCR/restriction digestion analysis to distinguish variant 1 of POU5F1 from variant 2 and all its currently known pseudogenes. Variant 1 has ApaI and Tsp45I restriction sites, which are not present in the pseudogenes or in variant 2. Thus, ApaI- and Tsp45I- digestions of POU5F1 PCR fragment, amplified with primers flanking these sites, are sufficient to identify the true variant 1 of POU5F1. To study the expression of variant 2 of POU5F1, two forward primers in the 5'-region that are not present in variant 1 were combined with reverse primers located in exon 3 of POU5F1 common to both transcripts. The assay was applied on 10 samples from peripheral blood leukocytes and commercially available ready-cDNAs from leukocytes and testis. We found that only variant 2 was expressed in leukocytes and testis and that the extracted RNA was not completely DNA free, despite DNAse treatment. This trace amount of DNA is a source of false positive RT-PCR amplifications. This article contains Supplementary Material available at http://www.interscience.wiley.com/jpages/1045-2257/suppmat. (c) 2008 Wiley-Liss, Inc. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1052543
- author
- Panagopoulos, Ioannis LU ; Möller, Emely LU ; Isaksson, Margareth LU and Mertens, Fredrik LU
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Genes, Chromosomes and Cancer
- volume
- 47
- pages
- 521 - 529
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- pmid:18335506
- wos:000255386700008
- scopus:43049154741
- pmid:18335506
- ISSN
- 1045-2257
- DOI
- 10.1002/gcc.20555
- language
- English
- LU publication?
- yes
- id
- d60ab95b-3fdf-4be3-aab5-1e8d25762b4c (old id 1052543)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/18335506?dopt=Abstract
- date added to LUP
- 2016-04-04 07:36:24
- date last changed
- 2022-01-29 02:22:02
@article{d60ab95b-3fdf-4be3-aab5-1e8d25762b4c,
abstract = {{POU5F1 has two alternatively spliced transcripts: a long (variant 1, NM_002701) and a short (variant 2, NM_203289) transcript. Only variant 1 is a key regulator of pluripotency. Hence, it is important to be able to distinguish this transcript from variant 2 and from the many pseudogenes present in the genome. Previous studies on the expression of POU5F1 were, however, usually carried out without considering the existence of the two transcripts and the pseudogenes which could be the source of false positive RT-PCR amplification. Here, we establish an RT-PCR/restriction digestion analysis to distinguish variant 1 of POU5F1 from variant 2 and all its currently known pseudogenes. Variant 1 has ApaI and Tsp45I restriction sites, which are not present in the pseudogenes or in variant 2. Thus, ApaI- and Tsp45I- digestions of POU5F1 PCR fragment, amplified with primers flanking these sites, are sufficient to identify the true variant 1 of POU5F1. To study the expression of variant 2 of POU5F1, two forward primers in the 5'-region that are not present in variant 1 were combined with reverse primers located in exon 3 of POU5F1 common to both transcripts. The assay was applied on 10 samples from peripheral blood leukocytes and commercially available ready-cDNAs from leukocytes and testis. We found that only variant 2 was expressed in leukocytes and testis and that the extracted RNA was not completely DNA free, despite DNAse treatment. This trace amount of DNA is a source of false positive RT-PCR amplifications. This article contains Supplementary Material available at http://www.interscience.wiley.com/jpages/1045-2257/suppmat. (c) 2008 Wiley-Liss, Inc.}},
author = {{Panagopoulos, Ioannis and Möller, Emely and Isaksson, Margareth and Mertens, Fredrik}},
issn = {{1045-2257}},
language = {{eng}},
pages = {{521--529}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Genes, Chromosomes and Cancer}},
title = {{A PCR/restriction digestion assay for the detection of the transcript variants 1 and 2 of POU5F1.}},
url = {{http://dx.doi.org/10.1002/gcc.20555}},
doi = {{10.1002/gcc.20555}},
volume = {{47}},
year = {{2008}},
}