ArticleScientific reports2014
Quantitative assessment of short amplicons in FFPE-derived long-chain RNA.
Article in Scientific reports, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed, 31 citations in OpenAlex.
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- Straightforward and sensitive RT-qPCR based gene expression analysis of FFPE samples.Scientific reports · 2016Article
- Laser-capture Microdissection of Human Prostatic Epithelium for RNA Analysis.Journal of visualized experiments : JoVE · 2015Article
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Corrections and comments
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Authors and funding
8 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Formalin-fixed paraffin-embedded (FFPE) tissues are important resources for molecular medical research. However, long-chain RNA analysis is restricted in FFPE tissues due to high levels of degradation. To explore the possibility of long RNA quantification in FFPE tissues, we selected 14 target RNAs (8 mRNAs and 6 long noncoding RNAs) from literatures, and designed short (~60 bp) and long (~200 bp) amplicons for each of them. Colorectal carcinomas with adjacent normal tissues were subjected to quantitative reverse-transcription PCR (quantitative RT-PCR) in 3 cohorts, including 18 snap-frozen and 83 FFPE tissues. We found that short amplicons were amplified more efficiently than long amplicons both in snap-frozen (P = 0.0006) and FFPE (P = 0.0152) tissues. Nonetheless, comparison of colorectal carcinomas with their adjacent normal tissues demonstrated that the consistency of fold-change trends in a single short amplicon between snap-frozen and FFPE tissues was only 36%. Therefore, we innovatively performed quantitative RT-PCR with 3 non-overlapping short amplicons for 14 target RNAs in FFPE tissues. All target RNAs showed a concordance of 100% of fold-change trends in at least two short amplicons, which offers sufficient information for accurate quantification of target RNAs. Our findings demonstrated the possibility of long-chain RNA analysis with 3 non-overlapping short amplicons in standardized-preserved FFPE tissues.
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