Direct scale-up from a single laboratory run to OP400

With its unique technologies, Sumitomo has established a Standard Manufacturing Method (SMM) for gRNAs ranging from 95 mer to 130 mer in length.

In the field of solid-phase synthesis chemistry, it is widely recognized that the scaling-up process, which includes two-phase interaction, synthesis, and purification, can be challenging to achieve. However, with the SMM, we can achieve an equivalent quality in laboratory-scale and manufacturing-scale productions.

• 	RP-HPLC purity
  Plant	90%
  Lab	*>85%

  *multiple results
  
  Purification method: RP-HPLC

• The above chromatogram shows a comparison between the reversed phase high performance liquid chromatography (RP-HPLC) charts of a 100 mer gRNA manufactured using OligoPilot100(OP100) in a laboratory and using OligoPilot400(OP400) in a manufacturing facility. The charts are very similar, and the purity of the material manufactured using OP400 reached 90%.

  
  

  Given the proven scalability of the SMM, a single feasibility run using OP100 is sufficient to determine the applicability of the SMM to each sequence. While the SMM is applicable to natural-type gRNAs with 2’-OMe modification and PS linkage, its applicability to a specific sequence is finally confirmed by a single feasibility run. So far, Sumitomo has demonstrated that its SMM can be applied for all the gRNA sequences disclosed by its customers.

  
  

  Sumitomo has successfully completed its first and second GMP campaigns in its newly built Oita Plant without any delay. Both campaigns were direct scale-ups from the laboratory scale without a pilot batch.

  
  

  Sumitomo’s SMM can be applied to even longer RNAs. This is a chromatogram of a 123 mer RNA with 89% purity.

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• As shown here, three 100 mer gRNA sequences manufactured using the SMM show equivalent chromatographic patterns.

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  Anzalone, A.V., et. al. Search-and-replace genome editing without double-strand breaks or donor DNA (2019) Nature, 576 (7785), pp. 149-157.

• This is a chromatogram of a 123 mer RNA with 89% purity.