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Simultaneous purification and depolymerization of Streptococcus pneumoniae serotype 2 capsular polysaccharides by
Walmik Karbhari Gaikwad1, Kisan M Kodam2, Rajeev M Dhere3
1Department of Technology, Savitribai Phule Pune University, Pune, 411007, India; Research and Development Department, Serum Institute of India Pvt. Ltd, Hadapsar, Pune, 411028, Maharashtra, India.
A new method simultaneously purifies and depolymerizes capsular polysaccharides (CPS) from Streptococcus pneumoniae serotype 2. This process ensures vaccine quality without affecting CPS antigenicity, crucial for glycoconjugate vaccine manufacturing.
Area of Science:
- Biochemistry
- Vaccine Development
- Microbiology
Background:
- Effective purification is vital for cost-efficient, high-quality glycoconjugate vaccine manufacturing.
- Capsular polysaccharides (CPS) are key components of vaccines against bacterial pathogens like Streptococcus pneumoniae.
Purpose of the Study:
- To develop a simultaneous purification and depolymerization method for Streptococcus pneumoniae serotype 2 CPS.
- To ensure the final product meets stringent quality specifications for vaccine use.
Main Methods:
- Utilized trifluoroacetic acid (TFA) for simultaneous purification and depolymerization of CPS.
- Removed precipitated impurities via centrifugation.
- Analyzed purified CPS for purity, structural identity, molecular size, and antigenicity.
Main Results:
- Trifluoroacetic acid treatment effectively purified and depolymerized the CPS.
- The process yielded CPS that met desired quality specifications.
- Crucially, the purification and depolymerization did not compromise the antigenicity of the CPS.
Conclusions:
- A novel, efficient method for simultaneous purification and depolymerization of Streptococcus pneumoniae serotype 2 CPS was successfully developed.
- This method is suitable for industrial application in glycoconjugate vaccine manufacturing.
- The process maintains the essential antigenicity of the CPS, ensuring vaccine efficacy.
