Comparing platforms for messenger RNA expression profiling of archival formalin-fixed, paraffin-embedded tissues

Svitlana Tyekucheva, Neil E. Martin, Edward C. Stack, Wei Wei, Vinod Vathipadiekal, Levi Waldron, Michelangelo Fiorentino, Rosina T. Lis, Meir J. Stampfer, Massimo Loda, Giovanni Parmigiani, Lorelei A. Mucci, Michael Birrer

Research output: Contribution to journalArticle

Abstract

Archival formalin-fixed, paraffin-embedded (FFPE) tissue specimens represent a readily available but largely untapped resource for gene expression profiling-based biomarker discovery. Several technologies have been proposed to cope with the bias from RNA cross-linking and degradation associated with archival specimens to generate data comparable with RNA from fresh-frozen materials. Direct comparison studies of these RNA expression platforms remain rare. We compared two commercially available platforms for RNA expression profiling of archival FFPE specimens from clinical studies of prostate and ovarian cancer: the Affymetrix Human Gene 1.0ST Array following whole-transcriptome amplification using the NuGen WT-Ovation FFPE System V2, and the NanoString nCounter without amplification. For each assay, we profiled 7 prostate and 11 ovarian cancer specimens, with a block age of 4 to 21 years. Both platforms produced gene expression profiles with high sensitivity and reproducibility through technical repeats from FFPE materials. Sensitivity and reproducibility remained high across block age within each cohort. A strong concordance was shown for the transcript expression values for genes detected by both platforms. We showed the biological validity of specific gene signatures generated by both platforms for both cohorts. Our study supports the feasibility of gene expression profiling and large-scale signature validation on archival prostate and ovarian tumor specimens using commercial platforms. These approaches have the potential to aid precision medicine with biomarker discovery and validation.

Original languageEnglish (US)
Pages (from-to)374-381
Number of pages8
JournalJournal of Molecular Diagnostics
Volume17
Issue number4
DOIs
StatePublished - Jul 1 2015
Externally publishedYes

ASJC Scopus subject areas

  • Molecular Medicine
  • Pathology and Forensic Medicine

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  • Cite this

    Tyekucheva, S., Martin, N. E., Stack, E. C., Wei, W., Vathipadiekal, V., Waldron, L., Fiorentino, M., Lis, R. T., Stampfer, M. J., Loda, M., Parmigiani, G., Mucci, L. A., & Birrer, M. (2015). Comparing platforms for messenger RNA expression profiling of archival formalin-fixed, paraffin-embedded tissues. Journal of Molecular Diagnostics, 17(4), 374-381. https://doi.org/10.1016/j.jmoldx.2015.02.002