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  • Journal article

  • Glycoproteomic measurement of site-specific polysialylation

    • Authors : Pelingon, Ruby; Pegg, Cassandra L; Zacchi, Lucia F (2020)

  • Polysialylation is the enzymatic addition of a highly negatively charged sialic acid polymer to the non-reducing termini of glycans. Polysialylation plays an important role in development, and is involved in neurological diseases, neural tissue regeneration, and cancer. Polysialic acid (PSA) is also a biodegradable and non-immunogenic conjugate to therapeutic drugs to improve their pharmacokinetics. PSA chains vary in length, composition, and linkages, while the specif...
  • Periodicals (Báo – Tạp chí)

  • Analysis of coagulation factor IX in bioreactor cell culture medium predicts yield and quality of the purified product

    • Authors : Zacchi, Lucia F; Recinos, Dinora Roche; Pegg, Cassandra L (2020)

  • Coagulation factor IX (FIX) is a highly complex post-translationally modified human serum glycoprotein and a high-value biopharmaceutical. The quality of recombinant FIX (rFIX), especially complete γ-carboxylation, is critical for rFIX clinical efficacy. Changes in bioreactor operating conditions can impact rFIX production and occupancy and structure of rFIX post-translational modifications (PTMs). We hypothesized that monitoring the bioreactor cell culture supernatant with Data Inde...