Lab901’s ScreenTape® Excels as Gold Standard Measure of RNA Quality
News Apr 21, 2010
In a recently published paper, Lab901’s ScreenTape® automated gel electrophoresis system demonstrated equivalence to - and improvements on - the accepted standard measurement of RNA sample quality control prior to microarray analysis.
The peer-reviewed paper, published in BMC Research Notes,1 set out to evaluate the effectiveness of the ScreenTape Degradation Value (SDV) as a measurement of RNA quality, compared to the Agilent Bioanalyzer’s RIN number.
The authors concluded that: ‘The ScreenTape platform is comparable to the Bioanalyzer platform in terms of reproducibility and discrimination between different levels of RNA degradation. The robust nature of the SDV metric qualifies it as an alternative metric for RNA sample quality control, and a useful predictor of downstream microarray performance.’
The paper went on to show that SDV and RIN scales demonstrated comparable discrimination between differently treated samples, with the SDV exhibiting potentially higher discrimination for more degraded samples, which are often obtained when using biopsies, laser micro-dissected samples or FFPE-treated tissue as the starting material. Increasing SDV values correlated with a decrease in microarray sample labelling efficiency and an increase in numbers of differentially-expressed genes.
Lab901’s ScreenTape R6K is a next-generation platform for RNA QC which can automatically deliver the ScreenTape Degradation Value (SDV), an objective quality metric for total RNA samples. The ScreenTape system removes steps such as gel reagent prep, chip priming and chip-vortexing, making the electrophoresis easier.
In addition, cross priming and sample carry-over problems are eliminated as ScreenTape R6K uses an individually sealed micro-gel for each sample analysis - improving data quality and reproducibility. Because of this, unlike many chip-based systems, Lab901’s ScreenTape device can be used more than once, with researchers able to run as little as one or two samples, reserving the rest of the channels (sixteen in total) for future experiments.
In a new study in cells, University of Illinois researchers have adapted CRISPR gene-editing technology to cause the cell’s internal machinery to skip over a small portion of a gene when transcribing it into a template for protein building. This gives researchers a way not only to eliminate a mutated gene sequence, but to influence how the gene is expressed and regulated.
Researchers published today a detailed description of the complete genome of bread wheat, the world's most widely-cultivated crop. This work will pave the way for the production of wheat varieties better adapted to climate challenges, with higher yields, enhanced nutritional quality and improved sustainability.