Ion-Triggered Hydrogels Self-Assembled from Statistical Copolypeptides

Bing Wu, Saltuk B. Hanay, Scott D. Kimmins, Sally Ann Cryan, Daniel Hermida Merino, Andreas Heise

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

2 Citas (Scopus)

Resumen

Statistical copolypeptides comprising lysine and tyrosine with unprecedented ion-induced gelation behavior are reported. Copolypeptides are obtained by one-step N-carboxyanhydride (NCA) ring-opening polymerization. The gelation mechanism is studied by in situ SAXS analyses, in addition to optical spectroscopy and transmission electron microscopy (TEM). It is found that the gelation of these statistically polymerized polypeptides is due to the formation of stable intermolecular β-sheet secondary structures induced by the presence of salt ions as well as the aggregation of an α-helix between the copolypeptides. This behavior is unique to the statistical lysine/tyrosine copolypeptides and was not observed in any other amino acid combination or arrangement. Furthermore, the diffusion and mechanical properties of these hydrogels can be tuned through tailoring the polypeptide chain length and ion strength.

Idioma originalInglés
Páginas (desde-hasta)323-328
Número de páginas6
PublicaciónACS Macro Letters
DOI
EstadoAceptada/en prensa - 2022
Publicado de forma externa

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