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Alignment and assembly of adsorbed collagen molecules induced by anisotropic chemical nanopatterns.

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Denis, Frédéric A [UCL] Pallandre, Antoine [UCL] Nysten, Bernard [UCL] Jonas, Alain M. [UCL] Dupont-Gillain, Christine C. [UCL]

Collagen, a protein widely used to control cell-material interactions, is known to self-assemble in solution. Supramolecular structures also form on material surfaces following collagen adsorption. Herein, we report the use of anisotropic, flat, surface chemical nanopatterns, which consist of alkyl-terminated tracks drawn in an oligo(ethylene glycol)-terminated matrix, to direct collagen adsorption. As revealed by atomic force microscopy, the spontaneous collagen adsorption performed on such patterned substrates results in the accumulation of collagen on the hydrophobic tracks. Moreover, the width of the tracks (30-90 nm), which is much smaller than the length of the collagen molecule (approximately 300 nm), is the origin of preferential alignment of the molecules and of their assembly into continuous bundles of adsorbed collagen. This chemical guidance effect due to self-confinement of proteins upon adsorption may bring novel and valuable applications, specifically in biomaterials science and cell growth control.

Document type Article de périodique (Journal article) – Article de recherche – Journal Article, Research Support, Non-U.S. Gov't
Access type Accès restreint
Publication date 2005
Language Anglais
Journal information "Small (Weinheim an der Bergstrasse, Germany)" - Vol. 1, no. 10, p. 984-91 (2005)
Peer reviewed yes
e-issn 1613-6829
issn 0957-1329
Publication status Publié
Affiliations UCL - FSA/MAPR - Département des sciences des matériaux et des procédés
UCL - AGRO/CABI - Département de chimie appliquée et des bio-industries
MESH Subject Adsorption ; Anisotropy ; Biocompatible Materials - chemistry ; Coated Materials, Biocompatible ; Collagen - chemistry ; Crystallization ; Ethylene Glycols - chemistry ; Microscopy, Atomic Force ; Models, Chemical ; Nanoparticles - chemistry ; Nanotechnology - methods ; Polyethylene Glycols - chemistry ; Surface Properties ; Water - chemistry
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Bibliographic reference Denis, Frédéric A ; Pallandre, Antoine ; Nysten, Bernard ; Jonas, Alain M. ; Dupont-Gillain, Christine C.. Alignment and assembly of adsorbed collagen molecules induced by anisotropic chemical nanopatterns.. In: Small (Weinheim an der Bergstrasse, Germany), Vol. 1, no. 10, p. 984-91 (2005)
Permanent URL http://hdl.handle.net/2078.1/10817