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Updated: May 27, 2025
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Preparation of Formalin-fixed Paraffin-embedded Tissue Cores for both RNA and DNA Extraction
Published on: August 21, 2016
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Transcriptomics and epigenomics datasets of primary brain cancers in formalin-fixed paraffin embedded format
Anabel García-Heredia1, Luna Guerra-Núñez1, Paula Martín-Climent1
1Laboratorio de Investigación, Centro de Diagnóstico, Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Hospital General Universitario Dr. Balmis, 03010, Alicante, Spain.
Scientific Data
|February 15, 2025
Summary
New omics datasets from formalin-fixed paraffin-embedded tumors enable integrated analysis of gene expression and DNA methylation in brain cancers like glioblastoma. This provides a valuable tool for biomarker discovery and therapeutic target validation.
Area of Science:
- Neuro-oncology
- Genomics
- Epigenetics
Background:
- Public omics datasets are crucial for brain cancer research, particularly for glioblastomas.
- Existing datasets may not fully account for chemical alterations in formalin-fixed paraffin-embedded (FFPE) tissues.
Purpose of the Study:
- To create novel omics datasets from FFPE tumors for integrated analysis.
- To provide an independent cohort for validating biomarkers and therapeutic targets in gliomas.
- To enable studies considering FFPE-derived alterations in gene expression and DNA methylation.
Main Methods:
- Generation of datasets from approximately 150 FFPE tumors using next-generation sequencing and DNA methylation profiling.
- Inclusion of common gliomas (glioblastomas, astrocytomas, oligodendrogliomas) and rare brain tumors.
- Focus on analyzing data within the context of FFPE-derived chemical alterations.
Main Results:
- Creation of integrated transcriptional and epigenetics datasets from FFPE glioma samples.
- Establishment of an independent cohort for biomarker and therapeutic target validation.
- Inclusion of rare tumors for comparative analysis in brain cancer research.
Conclusions:
- The developed datasets offer a valuable resource for exploring combined gene expression and DNA methylation patterns in gliomas.
- This resource facilitates the study of brain tumors, considering the challenges of FFPE tissue archiving.
- Enables advancements in identifying biomarkers and therapeutic strategies for brain cancers.
