A Comparative RNA Quantitation Analysis is Available

17 Mar 2008

Product news

Bio-Rad Laboratories, Inc., a multinational manufacturer and distributor of life science research and clinical diagnostic products, announced today the availability of a technical paper (bulletin 5420A) that compares the performance of Bio-Rad’s Experion™ system to other methods of RNA quantitation.

The bulletin examines the linear range, reproducibility, and accuracy of quantitation by the methods described in the paper and the compatibility of these methods with several common contaminants of RNA preparations. The six-page bulletin describes the methods, results and conclusions in detail, which is supported by numerous graphs, tables and figures.

The Bio-Rad Experion automated electrophoresis system is a valuable tool for the assessment of RNA concentration, integrity, and purity. It can be favorably compared to other more conventional RNA quantitation methods with regards to assay linearity, reproducibility, and accuracy. Additionally, the Experion analysis, in contrast to UV spectroscopy, is relatively unaffected by reagents common to RNA preparation, such as phenol and monophasic phenol-guanidinium isothiocyanate solutions. The additional microfluidic separation affords the unique ability to visually evaluate the RNA sample for degradation and for the presence of copurifying nucleic acids, such as gDNA and tRNA.

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ElectrophoresisElectrophoresis equipment is used to separate mixtures of protein, DNA or RNA, based on their electric charge, size and other physical characteristics, by passing them through a medium such as a polyacrylamide gel, an agarose gel or a capillary tube. Electrophoresis equipment includes horizontal and vertical gel electrophoresis chambers, isoelectric focusing systems, 2D electrophoresis and capillary electrophoresis instruments. Precast gels with a gradient can be used or gels can be hand cast. Samples are run alongside ladders or markers to identify the approximate size of a molecule. Separated proteins and nucleic acids in the gel can be stained or probed with fluorescent markers and then imaged and detected using gel documentation instruments, transilluminators, densitometers and scanners. Find the best electrophoresis equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Genome AnalysisGenomics, the study of genomes, includes functional genomics, evolutionary genomics and comparative genomics. There are many genomic technologies such as DNA sequencing of whole genomes, computational biology and bioinformatics. DNA and nucleic acids must be isolated and concentrated from cells for analysis with kits, automated analyzers and software. Other useful technologies for studying genomics include PCR, microarrays and electrophoresis.RNA InterferenceRNA interference (RNAi) uses siRNA or miRNA for transcriptional silencing, gene knockdown and regulation of gene expression. RNAi requires chemical synthesis, introduction of DNA vectors into cells, an assay of RNAi effects and RNAi quantification or analysis. Consider target sequence selection, reagent preparation, controls, high specificity and effectiveness and low non-specific gene knockdown.