Title page for ETD etd-10122005-134402

Type of Document Dissertation
Author Madurawe, Rapti D.
URN etd-10122005-134402
Title Optimization of metal dependent antibodies for chromatography
Degree PhD
Department Chemical Engineering
Advisory Committee
Advisor Name Title
Velander, William H. Committee Chair
Conger, William L. Committee Member
Drohan, William N. Committee Member
Michelsen, Donald L. Committee Member
Orthner, C. L. Committee Member
Wilkins, Tracy D. Committee Member
  • Monoclonal antibodies Research.
  • Chromatographic analysis.
Date of Defense 1990-04-05
Availability restricted

This study focuses on the utilization of metal-dependent monoclonal antibodies for large-scale chromatography and addresses an aspect that has been cited to lower immunosorbent performance, namely "orientation" of antibodies on matrices. The antibodies used in this study, the "EDTAdependent" 7D7BlO and the "Ca2+ -dependent" HPC4 are directed against human Protein C (PC).

The 7D7BI0 antibody was characterized in terms of its metaldependency and specificity. The region of PC (epitope) recognized by 7D7BlO was identified as the first 15 residues in the NH2-terminal. Immunosorbents made with 7D7BI0 provided highly pure and functional PC.

The "orientation" of the antibodies on matrices was addressed in two ways. In the first approach, performance of immunosorbents coupled through carbohydrate moieties were compared with immunosorbents coupled through peptide regions. Coupling via carbohydrate linkages, which is generally believed to be Fc-directed, did not have any advantage in terms of efficiency and recovery over coupling via peptide.

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