Evidence map›Paper›PMID 26361796›Full record

SynthesisToxicological sciences : an official journal of the Society of Toxicology2015

Mining the Archives: A Cross-Platform Analysis of Gene Expression Profiles in Archival Formalin-Fixed Paraffin-Embedded Tissues.

A Francina Webster, Paul Zumbo, Jennifer Fostel, Jorge Gandara, Susan D Hester, Leslie Recio, Andrew Williams, Charles E Wood, Carole L Yauk, Christopher E Mason

Abstract readComparative StudyMeta-Analysis
In one paragraph

Synthesis in Toxicological sciences : an official journal of the Society of Toxicology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed.

  1. Comparison of RNA-Sequencing Methods for Degraded RNA.International journal of molecular sciences · 2024
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  13. Demodifying RNA for Transcriptomic Analyses of Archival Formalin-Fixed Paraffin-Embedded Samples.Toxicological sciences : an official journal of the Society of Toxicology · 2018
    Article
  14. Article
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  16. Article
  17. Advanced Applications of RNA Sequencing and Challenges.Bioinformatics and biology insights · 2015
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

A Francina Webster*Environmental Health Science and Research Bureau, Health Canada, Ottawa K1A 0K9, Canada; Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa K1S 5B6, Canada;
Paul ZumboDepartment of Physiology and Biophysics, Weill Cornell Medical College, New York, New York 10065;
Jennifer FostelNational Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709;
Jorge GandaraDepartment of Physiology and Biophysics, Weill Cornell Medical College, New York, New York 10065;
Susan D HesterOffice of Research and Development, US Environmental Protection Agency, Research Triangle Park, North Carolina 27709;
Leslie RecioILS, Inc., PO Box 13501, Research Triangle Park, North Carolina 27709;
Andrew Williams*Environmental Health Science and Research Bureau, Health Canada, Ottawa K1A 0K9, Canada;
Charles E WoodOffice of Research and Development, US Environmental Protection Agency, Research Triangle Park, North Carolina 27709;
Carole L Yauk*Environmental Health Science and Research Bureau, Health Canada, Ottawa K1A 0K9, Canada; Carole.Yauk@hc-sc.gc.ca chm2042@med.cornell.edu.
Christopher E MasonDepartment of Physiology and Biophysics, Weill Cornell Medical College, New York, New York 10065; The Feil Family Brain and Mind Research Institute (BMRI), 413 East 69th Street, New York, New York 10021; and The HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine, 1305 York Avenue, New York, New York 10065 Carole.Yauk@hc-sc.gc.ca chm2042@med.cornell.edu.

Funding

NIEHS NIH HHS N01 ES055536
6 · The paper itself

Abstract

Formalin-fixed paraffin-embedded (FFPE) tissue samples represent a potentially invaluable resource for transcriptomic research. However, use of FFPE samples in genomic studies has been limited by technical challenges resulting from nucleic acid degradation. Here we evaluated gene expression profiles derived from fresh-frozen (FRO) and FFPE mouse liver tissues preserved in formalin for different amounts of time using 2 DNA microarray protocols and 2 whole-transcriptome sequencing (RNA-seq) library preparation methodologies. The ribo-depletion protocol outperformed the other methods by having the highest correlations of differentially expressed genes (DEGs), and best overlap of pathways, between FRO and FFPE groups. The effect of sample time in formalin (18 h or 3 weeks) on gene expression profiles indicated that test article treatment, not preservation method, was the main driver of gene expression profiles. Meta- and pathway analyses indicated that biological responses were generally consistent for 18 h and 3 week FFPE samples compared with FRO samples. However, clear erosion of signal intensity with time in formalin was evident, and DEG numbers differed by platform and preservation method. Lastly, we investigated the effect of time in paraffin on genomic profiles. Ribo-depletion RNA-seq analysis of 8-, 19-, and 26-year-old control blocks resulted in comparable quality metrics, including expected distributions of mapped reads to exonic, untranslated region, intronic, and ribosomal fractions of the transcriptome. Overall, our results indicate that FFPE samples are appropriate for use in genomic studies in which frozen samples are not available, and that ribo-depletion RNA-seq is the preferred method for this type of analysis in archival and long-aged FFPE samples.

Indexed as

FixativesFormaldehydeFrozen SectionsOligonucleotide Array Sequence AnalysisParaffin EmbeddingAnimalsComputational BiologyDatabases, GeneticFemaleFuransGene Expression ProfilingGene Expression RegulationGene Regulatory NetworksLiverMiceRatsFixativesFormaldehydefuranFuransRNA, Messengerarchival RNAbiorepositoriesFFPEmicroarrayRNA-seqtoxicogenomics

Identifiers

PMID26361796
PMCPMC4659533

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.