Ultrasound-assisted solid-phase affibody synthesis using ZEGFR:1907 as an example: superior to the conventional protocol?
Background: Affibody molecules represent a class of highly specific binders of particular interest for the development of highly affine target-specific radiopharmaceuticals. Their chemical synthesis is, however, intricate due to their considerable length of 58 amino acids; thus, approaches to optimi...
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| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
27 September 2024
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| In: |
Pharmaceuticals
Year: 2024, Jahrgang: 17, Heft: 10, Pages: 1-11 |
| ISSN: | 1424-8247 |
| DOI: | 10.3390/ph17101280 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.3390/ph17101280 Verlag, kostenfrei, Volltext: https://www.mdpi.com/1424-8247/17/10/1280 
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| Verfasserangaben: | Marie Prochiner, Benedikt Judmann, Alina Ruder, Björn Wängler, Ralf Schirrmacher and Carmen Wängler |
MARC
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| 245 | 1 | 0 | |a Ultrasound-assisted solid-phase affibody synthesis using ZEGFR:1907 as an example |b superior to the conventional protocol? |c Marie Prochiner, Benedikt Judmann, Alina Ruder, Björn Wängler, Ralf Schirrmacher and Carmen Wängler |
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| 520 | |a Background: Affibody molecules represent a class of highly specific binders of particular interest for the development of highly affine target-specific radiopharmaceuticals. Their chemical synthesis is, however, intricate due to their considerable length of 58 amino acids; thus, approaches to optimize their preparation are constantly being sought. Methods: As ultrasound assistance has recently been shown to increase the efficiency of amino acid conjugation during solid-phase peptide synthesis (SPPS), the influence of ultrasonication on the outcome of the SPPS-based preparation of the EGFR-specific affibody ZEGFR:1907 was compared to a common protocol relying on mechanical shaking. Results: After the identification of a suitable solid support for the study, the execution of the systematic comparison of both approaches showed that conventional and ultrasound-assisted syntheses yielded equivalent results with analogous composition of the raw products. Further, both approaches produced the affibody in good isolated yields of >20% when applying the same optimal reagent excesses and coupling times for the conjugation of each amino acid. This indicates that, under optimal reaction conditions, the choice of solid support used has a much stronger influence on the outcome of the preparation of ZEGFR:1907 than the application of ultrasound, which did not further improve the synthesis results. Conclusions: Therefore, for the chemical synthesis of affibodies, great attention should be paid to the choice of a suitable solid support, enabling this highly interesting class of biomolecules to be obtained in good yields and to bring them more into the focus of radiopharmaceutical research. | ||
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