When building a dual-sgRNA library, library quality can directly impact screening results. Poor uniformity may cause low-abundance sgRNAs to be missed during sequencing, potentially leading to false-negative results.
 
Recently, Synbio Technologies completed a dual-sgRNA library project with:
• 99.12% coverage: nearly every designed dual-sgRNA combination was successfully represented in the final library.
• 2.8-fold uniformity: strong representation consistency across the library, helping minimize abundance-related bias.

For this project, we used a dual-promoter system, with two independent RNA polymerase III promoters driving the expression of the two sgRNAs. Compared with tandem designs driven by a single promoter, the dual-promoter strategy can help reduce position- and sequence-dependent effects, supporting more consistent sgRNA expression and editing performance.
 
Our team selects the library architecture based on each project's experimental goals, complexity, and cost considerations—helping balance performance, reliability, and scalability. Are you currently working on a dual-sgRNA library or combinatorial screening project? If so, we'd be happy to discuss your design.

 
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Looking for more? These services might be just what you need:
Oligo Pools      Genome KO Libraries Construction sgRNA Library Cell Pool
 
 
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Synbio Technologies LLC
9 Deer Prk Dr., Suite J-25, Monmouth Junction, NJ 08852, USA