title: Biomimetic cryptic site surfaces for reversible chemo- and cyto-mechanoresponsive substrates.
abstract: Chemo-mechanotransduction, the way by which mechanical forces are transformed into chemical signals, plays a fundamental role in many biological processes. The first step of mechanotransduction often relies on exposure, under stretching, of cryptic sites buried in adhesion proteins. Likewise, here we report the first example of synthetic surfaces allowing for specific and fully reversible adhesion of proteins or cells promoted by mechanical action. Silicone sheets are first plasma treated and then functionalized by grafting sequentially under stretching poly(ethylene glycol) (PEG) chains and biotin or arginine-glycine-aspartic acid (RGD) peptides. At unstretched position, these ligands are not accessible for their receptors. Under a mechanical deformation, the surface becomes specifically interactive to streptavidin, biotin antibodies, or adherent for cells, the interactions both for proteins and cells being fully reversible by stretching/unstretching, revealing a reversible exposure process of the ligands. By varying the degree of stretching, the amount of interacting proteins can be varied continuously.
authors.affiliation: Institut de Sciences des Matériaux de Mulhouse, IS2M-LRC 7228 CNRS/Université de Haute-Alsace, 15, Rue Jean Starcky, 68057 Mulhouse Cedex, France.
authors.forename: Jalal
authors.initials: J
authors.lastname: Bacharouche
authors.forename: Florent
authors.initials: F
authors.lastname: Badique
authors.forename: Ahmad
authors.initials: A
authors.lastname: Fahs
authors.forename: Maria V
authors.initials: MV
authors.lastname: Spanedda
authors.forename: Alexandre
authors.initials: A
authors.lastname: Geissler
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Malval
authors.forename: Marie-France
authors.initials: MF
authors.lastname: Vallat
authors.forename: Karine
authors.initials: K
authors.lastname: Anselme
authors.forename: Grégory
authors.initials: G
authors.lastname: Francius
authors.forename: Benoit
authors.initials: B
authors.lastname: Frisch
authors.forename: Joseph
authors.initials: J
authors.lastname: Hemmerlé
authors.forename: Pierre
authors.initials: P
authors.lastname: Schaaf
authors.forename: Vincent
authors.initials: V
authors.lastname: Roucoules
mesh_terms: D040761:Biomimetic Materials / Q000737:chemistry*; D055119:Elastic Modulus; D008422:Materials Testing; D040542:Mechanotransduction, Cellular; D008567:Membranes, Artificial; D011485:Protein Binding; D011506:Proteins / Q000737:chemistry* / Q000648:ultrastructure; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D008567:Membranes, Artificial; D011506:Proteins