Optimizing RNA extraction methods for high-throughput transcriptome sequencing of formalin-fixed paraffin-embedded...

Area of Science:

• Molecular Biology
• Biochemistry
• Genomics

Background:

• Archived FFPE cardiac tissues are crucial for identifying cardiovascular disease biomarkers.
• High-quality RNA extraction is essential for reliable transcriptome sequencing and molecular assays.

Purpose of the Study:

• To compare the efficiency of four RNA extraction methods for FFPE cardiac tissues.
• To identify optimal protocols for high-quality RNA yield and integrity.

Main Methods:

• Four RNA extraction methods were evaluated: Qiagen AllPrep DNA/RNA (QP), modified Qiagen (QE), CELLDATA (BP), and modified CELLDATA (BL).
• Comparison was performed on 23 FFPE cardiac tissue specimens (n=92).
• RNA yield, purity, and DV200 values were assessed as quality metrics.

Main Results:

• Method QE and QP yielded the highest RNA quantity.
• Method QE showed better RNA integrity (DV200 > 30%) than QP.
• Method BL demonstrated superior DV200 values compared to BP, QE, and QP.
• Method QE excelled in RNA yield, while Method BL excelled in RNA integrity (DV200).

Conclusions:

• Optimized RNA extraction protocols (QE and BL) yield high-quality RNA from FFPE cardiac tissues.
• High RNA yield (QE) and integrity (BL) facilitate comparable sequencing results.
• Improved RNA extraction enables advanced transcriptome profiling for cardiovascular disease research.