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Ultra-low input total RNA Sequencing

Ultra-low input total RNA sequencing (Ultra-low input total RNA-seq)

This sequencing service is able to provide a solution for those samples which can't increase the amount and improve the quality, such as FFPE samples. SMART® (Switching Mechanism At 5' end of RNA Template) cDNA synthesis technology (Chenchik et al. 1998) and generates Illumina-compatible libraries via PCR amplification, avoiding the need for adapter ligation. The directionality of the template-switching reaction preserves the strand orientation of the original RNA, making it possible to obtain strand-specific sequencing data from the synthesized cDNA.

Diagram illustrating the ultra-low input total RNA sequencing workflow. It features a step-by-step process from single-cell or low-input RNA extraction through reverse transcription, amplification, library preparation, and sequencing, ending with bioinformatic analysis. Color-coded icons and arrows guide the viewer through each stage.

Sample submission requirements

Service Sample Type Recommended Amount Minimum Amount Minimum Concentration Quality
Ultra-low input total RNA-seq Total RNA 10 ng 5 ng 1 ng/ul Must be treated by RNase-free DNase
RIN>2.3
DV200>66%
  • RIN stands for RNA integrity number, which is evaluated by measuring the ratio of 28S:18S
  • DV200 evaluates the percentage of fragments >200 nucleotides
  • This service may not be available for some species
  • Concentration must be measured by Qubit
  • The core has the rights to determine if the samples are qualified for the experiment
  • Please contact the core via email at [email protected] or call 713-500-7933 for more information.

Service workflow

Workflow diagram for ultra-low input total RNA sequencing service. It shows key steps including sample collection, RNA extraction, cDNA synthesis, library preparation, sequencing, and data analysis. Each step is represented with labeled icons and directional arrows to illustrate the sequential process.

Useful documents