Comparison between NuGEN's WT-Ovation Pico and one-direct amplification systems

Area of Science:

• Molecular Biology
• Plant Science

Background:

• Analyzing differential gene expression in homogenous cell types is crucial.
• Small cell samples, like those from laser-capture microdissection, require RNA amplification for transcriptome profiling.
• Advancements allow amplification directly from whole cell lysates.

Purpose of the Study:

• To compare two RNA amplification systems (NuGEN's WT-Ovation Pico and WT-One-Direct) for their suitability with small cell quantities obtained via laser-capture microdissection.
• To evaluate variations in observed RNA abundance attributable to each amplification procedure.
• To assess the reproducibility and accuracy of whole genome transcriptome profiling after amplification.

Main Methods:

• Laser-capture microdissection of Arabidopsis root cells (giant cells from nematode infestation and uninfested controls).
• Evaluation of two amplification systems: WT-Ovation Pico (total RNA) and WT-One-Direct (cell lysate).
• Microarray analysis to assess whole genome transcriptome profiling reproducibility and gene expression differences.

Main Results:

• The WT-One-Direct system exhibited lower reproducibility and higher variability compared to the WT-Ovation Pico system.
• The Pico amplification kit enabled the detection of thousands of differentially expressed genes between giant cells and control cells.
• The One-Direct amplification kit detected relatively few differentially expressed genes.

Conclusions:

• The WT-Ovation Pico amplification system is more suitable and reproducible for whole genome transcriptome profiling of small cell samples obtained by laser-capture microdissection.
• The choice of amplification method significantly impacts the number of differentially expressed genes detected, affecting biological discovery.