Protein features instruct the secretion dynamics from metal-supported synthetic amyloids
Hexahistidine-tagged proteins can be clustered by divalent cations into self-containing, dynamic protein depots at the microscale, which under physiological conditions leak functional protein. While such protein granules show promise in clinics as time-sustained drug delivery systems, little is know...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/408491 |
| Acceso en línea: | https://hdl.handle.net/2117/408491 https://dx.doi.org/10.1016/j.ijbiomac.2023.126164 |
| Access Level: | acceso abierto |
| Palabra clave: | Particles Drug delivery systems Proteins Recombinant proteins Microparticles Secretory amyloids Drug delivery system Time sustained drug release Building blocks Partícules (Matèria) Medicaments -- Modes d'administració Proteïnes Àrees temàtiques de la UPC::Ciències de la salut |
| Sumario: | Hexahistidine-tagged proteins can be clustered by divalent cations into self-containing, dynamic protein depots at the microscale, which under physiological conditions leak functional protein. While such protein granules show promise in clinics as time-sustained drug delivery systems, little is known about how the nature of their components, that is, the protein and the particular cation used as cross-linker, impact on the disintegration of the material and on its secretory performance. By using four model proteins and four different cation formulations to control aggregation, we have here determined a moderate influence of the used cation and a potent impact of some protein properties on the release kinetics and on the final fraction of releasable protein. In particular, the electrostatic charge at the amino terminus and the instability and hydropathicity indexes determine the disintegration profile of the depot. These data offer clues for the fabrication of efficient and fully exploitable secretory granules that being biocompatible and chemically homogenous allow their tailored use as drug delivery platforms in biological systems. |
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