Ignacio A. Rivero Espejel, M. Ávila-Cossío, Victor García-González
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引用次数: 0
Abstract
This study reports the synthesis of ultrathin polymeric films through layer-by-layer deposition and covalent cross-linking of poly(2-vinyl-4,4'-dimethylazlactone) and branched poly (ethylene imine) (PEI) which were functionalized with aromatic amines that encompass anilines. To assess the effect of these aromatics molecules on the adhesion and proliferation of Langerhans β-cells, we prepared 35 bilayers of unfunctionalized and functionalized films with aromatic amines, which were characterized in terms of their physical, chemical, and biological properties by a battery of experimental techniques including 1H and 13C, NMR, mass spectrometry, attenuated total reflectance Fourier transform infrared spectroscopy, field emission scanning electron microscopy and cell adhesion and staining. The films were nanometric, transparent, resistant to manipulation, chemically reactive, and highly cytocompatible. We demonstrated that films functionalized with aromatic molecules support the attachment and growth of in vitro Langerhans β-cells. This study provides the basis for a general approach to designing and functionalizing ultrathin films that promote cell growth on surfaces of interest for investigation in cell biology studies and a broad range of other biomedical applications. Resumen. En este estudio se describe la síntesis de películas poliméricas ultrafinas mediante la técnica de capa por capa y la reticulación covalente de poli(2-vinil-4,4'-dimetilazlactona) y poli etilenimina (PEI) ramificado y, se funcionalizaron con aminas aromáticas que engloba las anilinas. Para evaluar el efecto de estas moléculas aromáticas en la adhesión y proliferación de las células β de Langerhans, se prepararon películas de 35 bicapas y se funcionalizaron con aminas aromáticas; se caracterizaron en términos de sus propiedades físicas, químicas y biológicas mediante una serie de técnicas experimentales que incluyeron 1H y 13C, RMN, espectrometría de masas, espectroscopia de infrarrojo por transformada de Fourier, microscopía electrónica de barrido por emisión de campo y tinción celular. En general, las películas fueron nanométricas, transparentes, resistentes a la manipulación, químicamente reactivas y altamente citocompatibles. Se demostró, además, que las películas funcionalizadas con moléculas aromáticas favorecen la adhesión y el crecimiento de células β in vitro. Este estudio establece las bases de un enfoque general para diseñar y funcionalizar películas ultrafinas, que promuevan el crecimiento celular en superficies de interés, para la investigación en estudios de biología celular y una gama amplia de aplicaciones biomédicas potenciales.
期刊介绍:
The Journal of the Mexican Chemical Society (J. Mex. Chem. Soc.) is a scientific, blind, peer reviewed, and open access, free of charge publication that covers all areas of chemistry and its sub-disciplines (i.e. medicinal chemistry, natural products, electrochemistry, material science, computational chemistry, organic chemistry, bionirganic chemistry, etc). It is devoted to facilitating the worldwide advancement of our understanding of chemistry. It will primarily publish original contributions of research in all branches of the theory and practice of chemistry in its broadest context as well as critical reviews in active areas of chemical research where the author has published significant contribution. The J. Mex. Chem. Soc. is a quarterly publication which language of submission and publication is English. To be suitable for publication in J. Mex. Chem. Soc., manuscripts must describe novel aspects of chemistry, high quality of results and discussion an excellent bibliographic support, and contribute to the development of the field. Routine or incremental work are not suitable for publication in J. Mex. Chem. Soc. Authors are encouraged to send contributions in electronic form. Our online submission system guides you stepwise through the process of entering your article details and uploading your files.