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- Improving on "Natural" Rodent Antibodies
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1. The immunogenicity problem in antibody therapy
- Prof. Herman Waldmann
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2. Antibodies by protein engineering
- Prof. Sir Gregory Winter
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3. The generation of diversity in antibody genes
- Prof. Michael Neuberger
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4. Innate immunity to retroelements by human AID/APOBEC3 proteins
- Prof. Reuben Harris
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5. Fc receptors and antibody effector functions
- Dr. Mike Clark
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6. Antibody engineering of Fc effector functions
- Dr. Mike Clark
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7. Antibody engineering: beginnings to bispecifics and beyond
- Dr. Ian Wilkinson
- Antibodies in Cancer Therapy
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8. Monoclonal antibodies and the ErbB system in human cancer
- Prof. Mark Greene
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9. Checkpoint blockade in cancer immunotherapy
- Prof. James Allison
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10. Monoclonal antibodies in haemato-oncology
- Prof. Mark Cragg
- Diagnostic Antibodies
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11. Monitoring therapy with antibodies
- Dr. Geoffrey Hale
- Cell Surface Glycoproteins on Cells of the Immune System
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12. Cell surface glycoproteins on cells of the immune system
- Prof. Neil Barclay
- Antibodies as Immunosuppressants
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13. Monoclonal antibodies to induce therapeutic immunological tolerance
- Prof. Herman Waldmann
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14. Antibodies to control or prevent type 1 diabetes
- Dr. Robert Hilbrands
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15. Antibody therapy of multiple sclerosis
- Dr. Alasdair Coles
- Prof. Alastair Compston
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16. Monoclonal antibodies in the management of rheumatoid arthritis
- Prof. John Isaacs
- Archived Lectures *These may not cover the latest advances in the field
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19. Alemtuzumab (Campath-1H) in therapy of CLL
- Prof. Kanti Rai
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20. VEGF inhibitors for anti-angiogenic therapy
- Prof. Kari Alitalo
- Dr. Bronislaw Pytowski
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21. Human antibodies produced in mice
- Dr. Marianne Bruggemann
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22. New strategies to prevent transplant rejection: from molecules to mice to monkeys to man
- Prof. Christian Larsen
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23. CD20 antibodies in the targeting of B-cell malignancies and autoimmunity
- Prof. Thomas Tedder
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24. Anti-IL-2 receptor antibodies as models for cancer therapy
- Prof. Thomas Waldmann
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25. Anti TNF therapy in rheumatoid arthritis
- Prof. Marc Feldmann
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26. Novel immunotherapeutic proteins: immunoligand
- Prof. Terry Strom
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27. Diagnostic immunohistopathology
- Prof. David Mason
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28. Antibodies in the control of type I diabetes
- Prof. Lucienne Chatenoud
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29. The challenge of targeting toxins to tumors
- Prof. Ben Seon
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30. Antibody depletion therapy in transplantation: implications for tolerance
- Prof. Laurence Turka
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31. Antibodies as anti-virals
- Prof. Dennis Burton
Printable Handouts
Navigable Slide Index
- Introduction
- (1) Introduction to antibody engineering
- IgG antibodies as therapeutic agents
- IgG is the preferred class
- Antibody modes of action
- Human IgG Fc receptors
- IgG-FcRIII crystal structure
- The IgG receptor FcRn
- Immunoglobulin frame system
- Humanisation of Campath-1G
- Effector functions of human Ig isotypes
- Mechanism of action of Campath antibodies
- Human IgG1 was effective in therapy
- (2) Engineering of functions
- Case study: FMAIT
- A protective antibody for use in FMAIT?
- Ideal properties of a protective antibody in FMAIT
- Engineered antibody to inhibit cell killing?
- Effector functions of human IgG subclasses
- Human IgG subclasses - similarity in sequence
- Transferring motifs between human subclasses
- Sequences of modified constant regions
- Summary of terminology of modified antibodies
- Schematic of G1-delta-a
- Schematic of G1-delta-b/c
- Schematic of G1-delta-ab/ac
- Target antigen systems for modified antibodies
- CD52 target antigen system
- RhD target antigen system
- Engineering of functions - (2a) - complement
- Complement-mediated lysis of mononuclear cells
- Inhibition of complement-mediated lysis
- (2b) Results for high affinity FcRI binding (CD64)
- Binding of modified antibodies to FcRI
- Titration of binding to FcRI
- Chemiluminescent response of human monocytes
- Inhibition of chemiluminescent response
- Inhibition of chemiluminescence to clinical sera
- (2c) Results for FcRII low affinity receptors (CD32)
- Immunocomplex binding to low affinity receptors
- Binding to FcRIIa (131R allotype)
- Binding to FcRIIa (131H allotype)
- Binding to FcRIIb
- Comparison of binding to IIa and IIb receptors
- (2d) Results for FcRIII receptors (CD16)
- Binding to FcRIIIb receptor
- Activity in ADCC to RBC
- Inhibition of ADCC to RBC
- Inhibition of ADCC by anti-RHD
- (2e) Summary of results
- Mutations effect is not predicted by WT functions
- Comparison of delta-b and delta-c mutations
- Summary of activities of modified antibodies
- (3) Clinical volunteer study with selected mutations
- Volunteer study with mutated and WT RhD Abs
- Study with mutated and WT RhD Abs - results
- Antibodies with modified Fc regions inhibit killing
- (4) Mutations that enhance activity
- Sequences of IgG antibodies in the CH2 region
- Human IgG1-FcR model
- Positions of differences in FcRIIa and FcRIIb
- Position of the Fc 268 mutation
- Position of the FcRII 131 polymorphism
- Summary of the position 268 modifications
- Binding of 268 mutants to FcRIIb
- ADCC with 268 mutants
- Summary of 268 mutant activities
- Proposed applications of G1-delta-e
- Other examples of Fc engineering
- Summary
- Acknowledgements
- References
Topics Covered
- IgG structure and modes of action
- Human IgG Fc receptors
- Structural interactions
- Engineering strategy
- Selection of subclasses and effector functions
- Manipulation of functions
- Case study: FMAIT
- Design and engineering of inhibitory Fc mutants
- Functional properties
- Complement mediated lysis
- FcR binding
- Monocyte activation
- ADCC
- Clinical volunteer study
- Activatory mutations
- Enhanced binding to FcR
- Increased ADCC
- Possible applications
Links
Series:
Categories:
Therapeutic Areas:
Talk Citation
Clark, M. (2007, October 1). Antibody engineering of Fc effector functions [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved February 5, 2025, from https://doi.org/10.69645/YXVC5568.Export Citation (RIS)
Publication History
Financial Disclosures
- Requested.