Pekar, Lukas ; Klewinghaus, Daniel ; Arras, Paul ; Carrara, Stefania C. ; Harwardt, Julia ; Krah, Simon ; Yanakieva, Desislava ; Toleikis, Lars ; Smider, Vaughn V. ; Kolmar, Harald ; Zielonka, Stefan (2021)
Milking the cow: cattle-derived chimeric ultralong CDR-H3 antibodies and their engineered CDR-H3-only knobbody counterparts targeting epidermal growth factor receptor elicit potent NK cell-mediated cytotoxicity.
In: Frontiers in Immunology, 12
doi: 10.3389/fimmu.2021.742418
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
In this work, we have generated epidermal growth factor receptor (EGFR)-specific cattle-derived ultralong CDR-H3 antibodies by combining cattle immunization with yeast surface display. After immunization, ultralong CDR-H3 regions were specifically amplified and grafted onto an IGHV1-7 scaffold by homologous recombination to facilitate Fab display. Antigen-specific clones were readily obtained by fluorescence-activated cell sorting (FACS) and reformatted as chimeric antibodies. Binning experiments revealed epitope targeting of domains I, II, and IV of EGFR with none of the generated binders competing with Cetuximab, Matuzumab, or EGF for binding to EGFR. Cattle-derived chimeric antibodies were potent in inducing antibody-dependent cell-mediated cytotoxicity (ADCC) against EGFR-overexpressing tumor cells with potencies (EC50 killing) in the picomolar range. Moreover, most of the antibodies were able to significantly inhibit EGFR-mediated downstream signaling. Furthermore, we demonstrate that a minor fraction of CDR-H3 knobs derived from generated antibodies was capable of independently functioning as a paratope facilitating EGFR binding when grafted onto the Fc part of human IgG1. Besides slightly to moderately diminished capacities, these engineered Knobbodies largely retained main properties of their parental antibodies such as cellular binding and triggering of ADCC. Hence, Knobbodies might emerge as promising tools for biotechnological applications upon further optimization.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Pekar, Lukas ; Klewinghaus, Daniel ; Arras, Paul ; Carrara, Stefania C. ; Harwardt, Julia ; Krah, Simon ; Yanakieva, Desislava ; Toleikis, Lars ; Smider, Vaughn V. ; Kolmar, Harald ; Zielonka, Stefan |
| Art des Eintrags: | Bibliographie |
| Titel: | Milking the cow: cattle-derived chimeric ultralong CDR-H3 antibodies and their engineered CDR-H3-only knobbody counterparts targeting epidermal growth factor receptor elicit potent NK cell-mediated cytotoxicity |
| Sprache: | Englisch |
| Publikationsjahr: | 2021 |
| Ort: | Lausanne |
| Verlag: | Frontiers Media S.A. |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Frontiers in Immunology |
| Jahrgang/Volume einer Zeitschrift: | 12 |
| Kollation: | 17 Seiten |
| DOI: | 10.3389/fimmu.2021.742418 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | In this work, we have generated epidermal growth factor receptor (EGFR)-specific cattle-derived ultralong CDR-H3 antibodies by combining cattle immunization with yeast surface display. After immunization, ultralong CDR-H3 regions were specifically amplified and grafted onto an IGHV1-7 scaffold by homologous recombination to facilitate Fab display. Antigen-specific clones were readily obtained by fluorescence-activated cell sorting (FACS) and reformatted as chimeric antibodies. Binning experiments revealed epitope targeting of domains I, II, and IV of EGFR with none of the generated binders competing with Cetuximab, Matuzumab, or EGF for binding to EGFR. Cattle-derived chimeric antibodies were potent in inducing antibody-dependent cell-mediated cytotoxicity (ADCC) against EGFR-overexpressing tumor cells with potencies (EC50 killing) in the picomolar range. Moreover, most of the antibodies were able to significantly inhibit EGFR-mediated downstream signaling. Furthermore, we demonstrate that a minor fraction of CDR-H3 knobs derived from generated antibodies was capable of independently functioning as a paratope facilitating EGFR binding when grafted onto the Fc part of human IgG1. Besides slightly to moderately diminished capacities, these engineered Knobbodies largely retained main properties of their parental antibodies such as cellular binding and triggering of ADCC. Hence, Knobbodies might emerge as promising tools for biotechnological applications upon further optimization. |
| Freie Schlagworte: | antibody display, antibody engineering, cattle antibody, ultralong CDR3, yeast surface display, Knobbody |
| Zusätzliche Informationen: | This article was submitted to Vaccines and Molecular Therapeutics, a section of the journal Frontiers in Immunology |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie 500 Naturwissenschaften und Mathematik > 570 Biowissenschaften, Biologie 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin, Gesundheit |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Clemens-Schöpf-Institut > Fachgebiet Biochemie |
| Hinterlegungsdatum: | 22 Jan 2024 09:13 |
| Letzte Änderung: | 22 Jan 2024 09:13 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
-
Milking the Cow: Cattle-Derived Chimeric Ultralong CDR-H3 Antibodies and Their Engineered CDR-H3-Only Knobbody Counterparts Targeting Epidermal Growth Factor Receptor Elicit Potent NK Cell-Mediated Cytotoxicity. (deposited 19 Jan 2024 14:21)
- Milking the cow: cattle-derived chimeric ultralong CDR-H3 antibodies and their engineered CDR-H3-only knobbody counterparts targeting epidermal growth factor receptor elicit potent NK cell-mediated cytotoxicity. (deposited 22 Jan 2024 09:13) [Gegenwärtig angezeigt]
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