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Nanomaterials (Basel). 2019 Jan 18;9(1). pii: E120. doi: 10.3390/nano9010120.

Fabrication of Gelatin Methacrylate (GelMA) Scaffolds with Nano- and Micro-Topographical and Morphological Features.

Author information

1
Instituto de Investigaciones en Ciencia y Tecnología de Materiales, INTEMA (UNMdP-CONICET), Av. Juan B. Justo 4302, Mar del Plata B7608FDQ, Buenos Aires, Argentina. aaldana@fi.mdp.edu.ar.
2
Instituto Nacional de Tecnología Industrial, Centro de Micro y Nanoelectrónica del Bicentenario (INTI-CMNB), Av. Gral. Paz 5445, San Martin B1650KNA, Buenos Aires, Argentina. laura@inti.gob.ar.
3
Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany. muhammad.rehman.ur@fau.de.
4
Department of Materials Science and Engineering, Institute of Space Technology Islamabad, 1, Islamabad Highway, Islamabad 44000, Pakistan. muhammad.rehman.ur@fau.de.
5
Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany. aldo.boccaccini@ww.uni-erlangen.de.
6
Instituto de Investigaciones en Ciencia y Tecnología de Materiales, INTEMA (UNMdP-CONICET), Av. Juan B. Justo 4302, Mar del Plata B7608FDQ, Buenos Aires, Argentina. gabraham@fi.mdp.edu.ar.

Abstract

The design of biomimetic biomaterials for cell culture has become a great tool to study and understand cell behavior, tissue degradation, and lesion. Topographical and morphological features play an important role in modulating cell behavior. In this study, a dual methodology was evaluated to generate novel gelatin methacrylate (GelMA)-based scaffolds with nano and micro topographical and morphological features. First, electrospinning parameters and crosslinking processes were optimized to obtain electrospun nanofibrous scaffolds. GelMA mats were characterized by SEM, FTIR, DSC, TGA, contact angle, and water uptake. Various nanofibrous GelMA mats with defect-free fibers and stability in aqueous media were obtained. Then, micropatterned molds produced by photolithography were used as collectors in the electrospinning process. Thus, biocompatible GelMA nanofibrous scaffolds with micro-patterns that mimic extracellular matrix were obtained successfully by combining two micro/nanofabrication techniques, electrospinning, and micromolding. Taking into account the cell viability results, the methodology used in this study could be considered a valuable tool to develop patterned GelMA based nanofibrous scaffolds for cell culture and tissue engineering.

KEYWORDS:

biomaterials; biomimetic scaffolds; electrospinning; gelatin; micromolding

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