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Protein Sciences

WuXi Biologics provides comprehensive testing for all aspects of your lead molecule to help you assess their molecules early on. From purity/impurity testing, structure characterization including mass spectrometry based protein ID and post translational modification analysis, to SPR/ELISA/cell-based activity assay, our protein analytics platform is there to help you triage/optimize your candidates efficiently and effectively as possible.

 

Micro Developability

  • High throughput, low concentration and purity requirement
  • Assessment of antibody’s propensity of self-association/ aggregation, viscosity etc.

AC-SINS HIC Correlation

Baculovirus/DNA/Insulin ELISA

 

  • Assessment of non-specific binding of mAbs
  • Most sensitive assays to measure low-affinity charge-based interactions of mAbs
  • High throughput, low cost, robust

Group 1051

Molecular Assessment Service Details:

(Micro-Developability)

Preliminary Stability Assessment Service Details:

(example stability protocol)

Stage III Molecular Assessment Service Details:

(Developability for Top Candidate)

LC-MS Services

  • Detailed characterization of bispecific antibody by intact mass analysis
  • High-throughput intact mass analysis for protein confirmation and quick glycan analysis (96-well plate)
  • Detailed peptide mapping for sequence coverage, PTM, sequence variant analysis
  • Disulfide mapping analysis to determine unknown disulfide linkage
  • N-glycan analysis by LC-Fluorescence-MS/MS for complex glycosylation

 

Intact Mass LC-MS Service Details:

(For Protein Samples)

Peptide Map LC-MS Service Details:

(For Protein Samples)

Disulfide LC-MS Service Details:

(For Protein Samples)

N-glycan LC-MS Service Details:

(For Protein Samples)

LC-MS Based Protein Quantification Service Details:

Purity and Impurity Test

WuXi Biologics evaluates the physicochemical characteristics of proteins using a variety of analytical methods to elucidate the identity, structure and purity of the product.

 

Product related impurities including size variants can be evaluated by orthogonal analytical methods including CE-SDS and size exclusion chromatography (SEC) with both UV and multi-angle light scattering (MALS) detectors, while charge variants can be evaluated using ion exchange HPLC (IEX-HPLC) and imaged capillary isoelectric focusing (icIEF). Process-related impurities such as host cell protein, host DNA, and protein A can also be routinely tested to ensure contamination control.  Finally, high-throughput endotoxin testing is also available for microbial control.

Routine Protein Production Analysis Service Details:

Protein Stability Service Details: