Glycosylation Analysis

Glycosylation Analysis Services for Biologics & Biosimilars

Glycosylation analysis is one of the most important critical quality attributes (CQAs) in the development and manufacturing of biologics and biosimilars. Even minor changes in upstream cell culture conditions or downstream purification can significantly impact the glycan profile of your therapeutic protein and, with it, efficacy, safety and pharmacokinetics.

For monoclonal antibodies, the Fc and Fab glycosylation patterns are particularly crucial: Fc glycans influence effector functions such as ADCC and CDC, while Fab glycans can affect antigen binding and immunogenicity. Regulatory authorities like FDA and EMA therefore require a detailed, well-controlled characterization of N- and O-glycosylation as part of any biologic’s CMC package.

In biosimilar development, early comparison of the N-glycosylation profile of your product with a clinical-grade reference drug is essential for deciding on the cell line and process strategy. To avoid costly late changes, glycosylation heterogeneity of different batches and reference samples should be characterized at the very beginning of any biosimilar or life-cycle program.

At Biofidus, our scientists routinely and reliably determine O- and N-linked glycosylation profiles and help you define appropriate specifications and acceptance criteria for your product. In line with your needs, we adapt and, where required, qualify (according to ICH guidelines) our platform methods, tailoring them to your API/drug substance, its formulation matrix and your specific analytical questions – from early screening to comparability, biosimilarity and commercial control strategies.

Get in contact with us to find the optimal strategy for your project and to speak directly from scientist to scientisA

Our Capabilities

  • Released N-glycan profiling
  • Site-specific N-glycosylation
  • O-glycosylation analysis and site localization
  • Quantification of key glycan features
  • Comparison of glycan profiles for biosimilarity and comparability
  • Impact of glycosylation on effector function
  • Batch-to-batch and process change monitoring of glycosylation
  • Characterization of sialic acid content and linkage types
  • Stability and stress-induced glycan changes
  • Method development, optimization and qualification for glycan CQAs

Just what you need? Contact us!

Advancing research through tailored bioanalytical solutions.

  • N-& O-glycans by HILIC-FLD(-MS), MALDI-TOF, and HPAEC-PAD
  • Glycopeptides by LC-ESI-MS
  • Glycan linkage analysis by GC-MS
  • Monosaccharides by HPAEC-PAD
  • Sialic Acids by HPAEC-PAD (NANA, NGNA, KDN) and CZE-UV
  • Molecular weight determination by LC-ESI-TOF
  • Glycosylation site occupancy by LC-ESI-MS
  • Access to galactosylation, sialylation, high mannose, afucosylation, bisecting GlcNAc, α-galactose, presence of O-glycosylation

TECHNOLOGIES USED

  1. LC-ESI-TOF
  2. LC-ESI-MS
  3. HILIC-FLD(-MS)
  4. MALDI-TPF
  5. HPAEC-PAD
  6. GC-MS
  7. CZE-UV

Tell us about Your Project

We‘ll advise you to define your assay needs.

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Our Expert

Please reach out to our director for Mass Spectrometry Dr. Thomas Schactsiek for all inquiries concerning the analysis of protein glycosylations.
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