Construction of 6-thioguanine and 6-mercaptopurine carriers based on βcyclodextrins and gold nanoparticles

R. Sierpe, Michael Noyong, Ulrich Simon, D. Aguayo, J. Huerta, Marcelo J. Kogan, N. Yutronic

Resultado de la investigación: Contribución a la publicaciónArticle

Resumen

As a novel strategy to overcome some of the therapeutic disadvantages of 6-thioguanine (TG) and 6-mercaptopurine (MP), we propose the inclusion of these drugs in βcyclodextrin (βCD) to form the complexes βCD-TG and βCD-MP, followed by subsequent interaction with gold nanoparticles (AuNPs), generating the ternary systems: βCD-TG-AuNPs and βCD-MP-AuNPs. This modification increased their solubility and improved their stability, betting by a site-specific transport due to their nanometric dimensions, among other advantages. The formation of the complexes was confirmed using powder X-ray diffraction, thermogravimetric analysis and one and two-dimensional NMR. A theoretical study using DFT and molecular modelling was conducted to obtain the more stable tautomeric species of TG and MP in solution and confirm the proposed inclusion geometries. The deposition of AuNPs onto βCD-TG and βCD-MP via sputtering was confirmed by UV–vis spectroscopy. Subsequently, the ternary systems were characterized by TEM, FE-SEM and EDX to directly observe the deposited AuNPs and evaluate their sizes, size dispersion, and composition. Finally, the in vitro permeability of the ternary systems was studied using parallel artificial membrane permeability assay (PAMPA).

Idioma originalEnglish
Páginas (desde - hasta)22-31
Número de páginas10
PublicaciónCarbohydrate Polymers
Volumen177
Identificadores de objetos digitales
EstadoPublished - 1 dic 2017
Publicado de forma externa

Huella dactilar

Ternary systems
Gold
Nanoparticles
Molecular modeling
Ultraviolet spectroscopy
Discrete Fourier transforms
X ray powder diffraction
Sputtering
Thermogravimetric analysis
Energy dispersive spectroscopy
Assays
Solubility
Nuclear magnetic resonance
Transmission electron microscopy
Membranes
Scanning electron microscopy
Geometry
Chemical analysis
Erysipeloid
Myosins

Keywords

    ASJC Scopus subject areas

    • Polymers and Plastics
    • Organic Chemistry
    • Materials Chemistry

    Citar esto

    Sierpe, R.; Noyong, Michael; Simon, Ulrich; Aguayo, D.; Huerta, J.; Kogan, Marcelo J.; Yutronic, N. / Construction of 6-thioguanine and 6-mercaptopurine carriers based on βcyclodextrins and gold nanoparticles.

    En: Carbohydrate Polymers, Vol. 177, 01.12.2017, p. 22-31.

    Resultado de la investigación: Contribución a la publicaciónArticle

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    abstract = "As a novel strategy to overcome some of the therapeutic disadvantages of 6-thioguanine (TG) and 6-mercaptopurine (MP), we propose the inclusion of these drugs in βcyclodextrin (βCD) to form the complexes βCD-TG and βCD-MP, followed by subsequent interaction with gold nanoparticles (AuNPs), generating the ternary systems: βCD-TG-AuNPs and βCD-MP-AuNPs. This modification increased their solubility and improved their stability, betting by a site-specific transport due to their nanometric dimensions, among other advantages. The formation of the complexes was confirmed using powder X-ray diffraction, thermogravimetric analysis and one and two-dimensional NMR. A theoretical study using DFT and molecular modelling was conducted to obtain the more stable tautomeric species of TG and MP in solution and confirm the proposed inclusion geometries. The deposition of AuNPs onto βCD-TG and βCD-MP via sputtering was confirmed by UV–vis spectroscopy. Subsequently, the ternary systems were characterized by TEM, FE-SEM and EDX to directly observe the deposited AuNPs and evaluate their sizes, size dispersion, and composition. Finally, the in vitro permeability of the ternary systems was studied using parallel artificial membrane permeability assay (PAMPA).",
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    Construction of 6-thioguanine and 6-mercaptopurine carriers based on βcyclodextrins and gold nanoparticles. / Sierpe, R.; Noyong, Michael; Simon, Ulrich; Aguayo, D.; Huerta, J.; Kogan, Marcelo J.; Yutronic, N.

    En: Carbohydrate Polymers, Vol. 177, 01.12.2017, p. 22-31.

    Resultado de la investigación: Contribución a la publicaciónArticle

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    T1 - Construction of 6-thioguanine and 6-mercaptopurine carriers based on βcyclodextrins and gold nanoparticles

    AU - Sierpe,R.

    AU - Noyong,Michael

    AU - Simon,Ulrich

    AU - Aguayo,D.

    AU - Huerta,J.

    AU - Kogan,Marcelo J.

    AU - Yutronic,N.

    PY - 2017/12/1

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