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Nucleic Acid Vaccines

mRNA Vaccines

Overview: WuXi Vaccines’ services for mRNA therapeutics and vaccines


WuXi Vaccines offers extensive capabilities and capacity in the development and GMP manufacturing of mRNA therapeutics and vaccines. Our highly-trained and expert team offers end-to-end services, starting from plasmid DNA manufacturing to the production and release of the final mRNA vaccine product under GMP conditions. We have dedicated GMP facilities, including a microbial-based manufacturing facility equipped with fermenters of up to 300 L scale for plasmid DNA production, up to 50L mRNA IVT reaction along with multiple vessels and purification equipment to cover a wide range of reaction volumes for mRNA transcription and purification. Our DP manufacturing capabilities include state-of-the-art mRNA-LNP production systems and robotic aseptic filling systems. All of our services are built upon our exceptional in-house CMC development and manufacturing capabilities and expertise, driven by our commitment to executional excellence and adherence to world-class quality systems.


Integrated end-to-end services from sequence to IND


Key services include:


  • Sequence optimization Process development:
    • Plasmid DNA: E. coli fermentation, cell lysis and purification
    • mRNA: In Vitro Transcription (IVT) including co-capping or post-capping options, purification
    • LNP: encapsulation, UF/DF, fill/finish
  • Tech transfer and scale-up
  • cGMP manufacturing: DS (mRNA) and DP (mRNA-LNP)
  • Comprehensive analytical development and QC testing capability
  • Full CMC and Regulatory support

Bulk Vaccine Process Development and Manufacturing


Our GMP services include a manufacturing facility with up to 300L scale fermenter for plasmid DNA production and various volume vessels and purification equipment for mRNA transcription and purification.



Final Vaccine Drug Product Process Development and Manufacturing


Our manufacturing service includes state-of-the-art mRNA-LNP production systems (e.g. Microfluidic and T-Junction mixing techniques) as well as robotic aseptic filling systems.


RNA Vaccine Product Development


  • Formulation development, process development and technology transfer
  • Lyophilization cycle development
  • Stability, stress study, CCIT, clinical in-use study
  • 25 µL to 10 L scale (feasibility / pilot)
  • Extensive mRNA-LNP DP characterization techniques: particle size, PDI, encapsulation rate, potency, etc.


RNA Vaccine Final Product Manufacturing


  • RABS (Restricted Access Barrier Systems) , isolator-based filling lines and two segregated Vanrx SA25 Robotic filling lines
  • Microfluidic and T-junction encapsulation processes
  • Aseptic formulation isolator
  • Single-use systems
  • Ready-to-use container-closure systems (vials and pre-filled syringes)

Analytical Science and Quality Control


Our dedicated team of highly trained and experienced analytical and QC professionals, allows us to offer:


  • Integrated labs that support diverse mRNA modalities
  • Methods development, transfer and qualification/validation
  • Product biochemical, biophysical, and biological characterization, and comparability analysis
  • Comprehensive analytical capabilities for full CMC packages that enable IND/BLA filings
  • Tox/Clinical lot DS/DP release and stability testing
  • Reference standard generation, qualification, characterization, storage, and life-time management
  • Analytical investigation; troubleshooting of GMP manufacturing related issues

Our established global quality system, quality control and operational systems meet or exceed worldwide regulatory standards from the U.S. FDA, EMA, NMPA and other major regulatory agencies. Our commitment to quality is ingrained in our company culture and our employees. We have harmonized our quality assurance (QA) and quality management system across all sites around the world for the clinical or commercial production of vaccines drug substance and drug product.



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