Nano Archive

Nanostructured 3-D collagen/nanotube biocomposites for future bone regeneration scaffolds

Silva, Edelma E. and Colleta, Heloisa H. M. and Ferlauto, Andre S. and Moreira, Roberto L. and Resende, Rodrigo R. and Oliveira, Sergio and Kitten, Gregory T. and Lacerda, Rodrigo G. and Ladeira, Luiz O. (2009) Nanostructured 3-D collagen/nanotube biocomposites for future bone regeneration scaffolds. Nano Research, 2 (6). pp. 462-473. ISSN 1998-0124 (Print) 1998-0000 (Online)

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Official URL: http://www.springerlink.com/content/k7683n32602217...

Abstract

The field of bionanotechnology has been rapidly growing during the last few years and we can now envision a controllable integration between biological and artificial matter, where new biomimetic structures with a wide range of chemical and physical properties will promote the development of a novel generation of medical devices. In this work we describe a collagen/carbon nanotube composite which has the potential to be used as a scaffold for tissue regeneration. Because this biocomposite incorporates the advantageous properties of both collagen and carbon nanotubes, it has most of the characteristics that an ideal biomaterial requires in order to be used as an osteoinductive agent. This biocomposite is bioresorbable and biodegradable and has the desired mechanical rigidity while maintaining a three-dimensional(3-D) nanostructured surface. Tuned stability and swelling were achieved under fluid environments by varying the amount of carbon nanotubes (CNTs) incorporated into the composite. These variations can dictate the degree of interaction between fibroblastic cells and the biomaterials. Proof-of-concept was shown by performing an in vitro induced mineralization of hydroxylapatite crystals under physiological conditions. Furthermore, the ability to attach biofunctional groups to the CNT walls can open a new road for tissue regeneration since the combination of CNTs with specific growth factors or cellular ligands can create an environment capable of signaling and influencing specific cell functions. Our observations suggest that collagen/carbon nanotube biocomposites will have important uses in a wide range of biotechnological areas.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:8374
Deposited By:JNCASR
Deposited On:27 Apr 2010 10:12
Last Modified:27 Apr 2010 10:12

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