Synthesis and characterization of water-soluble C60–peptide conjugates
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Date
2024
Publication Type
Journal Article
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yes
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Abstract
With the aim of developing biocompatible and water-soluble C60 derivatives, three types of C60-peptide conjugates consisting of hydrophilic oligopeptide anchors (oligo-Lys, oligo-Glu, and oligo-Arg) were synthesized. A previously reported Prato reaction adduct of a biscarboxylic acid-substituted C60 derivative was subjected to a solid phase synthesis for amide formation with N-terminal amines of peptides on resin to successfully provide C60-peptide conjugates with one C60 and two peptide anchors as watersoluble moieties. Among three C60-peptide conjugates prepared, C60-oligo-Lys was soluble in water at neutral pH, and C60-oligoGlu was soluble in buffer with a higher pH value, but C60-oligo-Arg was insoluble in water and most other solvents. C60-oligo-Lys and C60-oligo-Glu were characterized by 1H and 13C NMR. Photoinduced 1O2 generation was observed in the most soluble C60-oligo-Lys conjugate under visible light irradiation (527 nm) to show the potential of this highly water-soluble molecule in biological systems, for example, as a photosensitizer in photodynamic therapy.
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published
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Journal / series
Volume
20
Pages / Article No.
777 - 786
Publisher
Beilstein-Institut zur Förderung der Chemischen Wissenschaften
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Subject
biomaterial; fullerene; peptide; water-soluble
Organisational unit
08687 - Gruppe Yamakoshi
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Funding
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