Evaluation and selection of a non-PCR based technology for improved gene expression profiling from clinical formalin-fixed, paraffin-embedded samples. (November 2016)

• Record Type: Journal Article
• Authors: Qi, Zhenhao; Wang, Lisu; He, Aiqing; Ma-Edmonds, Manling; Cogswell, John
• Is Part Of: Bioanalysis. Volume 8:Number 22(2016)
• Page Start: 2305
• Page End: 2316
• Publication Date: 2016-11
• Subjects: biomarkers -- colorectal cancer -- FFPE tissue -- gene expression -- Notch pathway -- quantitative nuclease protection assay -- qPCR -- RNA; Drugs -- Analysis -- Periodicals; 615.19005
• DOI: 10.4155/bio-2016-0186
• Languages: English
• ISSNs: 1757-6180

Abstract

Aim: Formalin-fixed, paraffin-embedded (FFPE) clinical tissue samples have the potential to provide valuable gene-expression data for the development of cancer biomarkers. However, FFPE RNA is extensively fragmented, presenting a significant challenge for reliably detecting gene expression using traditional qPCR methods.Results: We evaluated three novel methodologies along with the traditional qPCR method for their ability to detect Notch pathway gene expression in colorectal cancer FFPE tissue RNAs. We found that quantitative nuclease protection assay-detected gene expression in high-quality RNAs as sensitively as qPCR, and consistently detected mRNAs in highly fragmented FFPE tissue RNAs.Conclusion: Quantitative nuclease protection assay represents an improved methodology for detecting gene expression in FFPE tissue and has the potential to advance the development of cancer biomarkers.