Full Spectrum RNA Amplification—How Does It Work?   

The Full Spectrum Complete Transcriptome RNA Amplification Kit makes use of a specially developed Universal Primer Mixture that uniformly amplifies gene transcripts using low-cycle PCR. This approach maintains the relative levels of each transcript in the starting mRNA samples (see data)—even when using starting amounts of RNA as low as 5 ng (see data). The Full Spectrum approach is also faster, requires fewer steps, and is more convenient than other techniques, including T7-based in vitro transcription, SMART cDNA amplification, or Ribo-SPIA amplification.

The Full Spectrum protocol entails just two steps:

  1. Universal Primer Binding and Synthesis of first-strand cDNA. The Universal Primer preferentially binds to all regions of messenger RNA and then initiates synthesis of the complementary DNA strand. This step takes approximately 1 hour. Remaining Universal Primer arbitrarily binds to the first-strand cDNA to prime second-strand synthesis in the following step.

  2. Second-strand cDNA synthesis and amplification. After an initial 5 min incubation to synthesize the second-strand, cycling commences to amplify the cDNA template. After 1 hour amplification, you have amplified template—ready for gene-specific PCR.

The amplified product can be used directly for quantitative PCR using primers specific for any gene sequence. No purification is required.