Modulation of conductivity of alginate hydrogels containing reduced graphene oxide through the addition of proteins

Raslan A. ; Ciriza J. (Universidad de Zaragoza) ; Ochoa de Retana A.M. ; Sanjuán M.L. ; Toprak M.S. ; Gálvez P. ; Saenz-Del-burgo L. ; Pedraz J.L.

Resumen: Modifying hydrogels in order to enhance their conductivity is an exciting field with applications in cardio and neuro-regenerative medicine. Therefore, we have designed hybrid alginate hydrogels containing uncoated and protein-coated reduced graphene oxide (rGO). We specifically studied the adsorption of three different proteins, BSA, elastin, and collagen, and the outcomes when these protein-coated rGO nanocomposites are embedded within the hydrogels. Our results demon-strate that BSA, elastin, and collagen are adsorbed onto the rGO surface, through a non-spontaneous phenomenon that fits Langmuir and pseudo-second-order adsorption models. Protein-coated rGOs are able to preclude further adsorption of erythropoietin, but not insulin. Collagen showed better adsorption capacity than BSA and elastin due to its hydrophobic nature, although requiring more energy. Moreover, collagen-coated rGO hybrid alginate hydrogels showed an enhancement in conductivity, showing that it could be a promising conductive scaffold for regenerative medicine.

Idioma: Inglés

DOI: 10.3390/pharmaceutics13091473

Año: 2021

Publicado en: Pharmaceutics 13, 9 (2021), 1473 [18 pp.]
ISSN: 1999-4923

Factor impacto JCR: 6.525 (2021)

Categ. JCR: PHARMACOLOGY & PHARMACY rank: 39 / 279 = 0.14 (2021) - Q1 - T1

Factor impacto CITESCORE: 6.0 - Pharmacology, Toxicology and Pharmaceutics (Q2)

Factor impacto SCIMAGO: 0.922 - Pharmaceutical Science (Q1)

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Area Histología (Dpto. Anatom.Histolog.Humanas)