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Sondag D, Heming JJA, Löwik DWPM, Krivosheeva E, Lejeune D, van Geffen M, van’t Veer C, van Heerde WL, Beens MCJ, Kuijpers BHM, Boltje TJ, Rutjes FPJT. Solid-Phase Synthesis of Caged Luminescent Peptides via Side Chain Anchoring. Bioconjug Chem 2023; 34:2234-2242. [PMID: 38055970 PMCID: PMC10739589 DOI: 10.1021/acs.bioconjchem.3c00381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 11/19/2023] [Accepted: 11/20/2023] [Indexed: 12/08/2023]
Abstract
The synthesis of caged luminescent peptide substrates remains challenging, especially when libraries of the substrates are required. Most currently available synthetic methods rely on a solution-phase approach, which is less suited for parallel synthesis purposes. We herein present a solid-phase peptide synthesis (SPPS) method for the synthesis of caged aminoluciferin peptides via side chain anchoring of the P1 residue. After the synthesis of a preliminary test library consisting of 40 compounds, the synthetic method was validated and optimized for up to >100 g of resin. Subsequently, two separate larger peptide libraries were synthesized either having a P1 = lysine or arginine residue containing in total 719 novel peptide substrates. The use of a more stable caged nitrile precursor instead of caged aminoluciferin rendered our parallel synthetic approach completely suitable for SPPS and serine protease profiling was demonstrated using late-stage aminoluciferin generation.
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Affiliation(s)
- Daan Sondag
- Institute
for Molecules and Materials, Radboud University, Nijmegen 6525 AJ, The Netherlands
| | - Jurriaan J. A. Heming
- Institute
for Molecules and Materials, Radboud University, Nijmegen 6525 AJ, The Netherlands
| | - Dennis W. P. M. Löwik
- Institute
for Molecules and Materials, Radboud University, Nijmegen 6525 AJ, The Netherlands
| | - Elena Krivosheeva
- Enzyre
BV, Novio Tech Campus,
Transistorweg 5-i, Nijmegen 6534 AT, The Netherlands
| | - Denise Lejeune
- Institute
for Molecules and Materials, Radboud University, Nijmegen 6525 AJ, The Netherlands
- Enzyre
BV, Novio Tech Campus,
Transistorweg 5-i, Nijmegen 6534 AT, The Netherlands
| | - Mark van Geffen
- Enzyre
BV, Novio Tech Campus,
Transistorweg 5-i, Nijmegen 6534 AT, The Netherlands
| | - Cornelis van’t Veer
- Enzyre
BV, Novio Tech Campus,
Transistorweg 5-i, Nijmegen 6534 AT, The Netherlands
| | - Waander L. van Heerde
- Enzyre
BV, Novio Tech Campus,
Transistorweg 5-i, Nijmegen 6534 AT, The Netherlands
- Department
of Haematology, Radboud University Medical
Centre, Nijmegen 6525 GA, The Netherlands
- Haemophilia
Treatment Centre, Nijmegen Eindhoven Maastricht
(HTC-NEM), Nijmegen 6525 GA, The Netherlands
| | | | | | - Thomas J. Boltje
- Institute
for Molecules and Materials, Radboud University, Nijmegen 6525 AJ, The Netherlands
| | - Floris P. J. T. Rutjes
- Institute
for Molecules and Materials, Radboud University, Nijmegen 6525 AJ, The Netherlands
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