title: Assembly of poly(dopamine)/poly(N-isopropylacrylamide) mixed films and their temperature-dependent interaction with proteins, liposomes, and cells.
abstract: Many biomedical applications benefit from responsive polymer coatings. The properties of poly(dopamine) (PDA) films can be affected by codepositing dopamine (DA) with the temperature-responsive polymer poly(N-isopropylacrylamide) (pNiPAAm). We characterize the film assembly at 24 and 39 °C using DA and aminated or carboxylated pNiPAAm by a quartz crystal microbalance with dissipation monitoring (QCM-D), X-ray photoelectron spectroscopy, UV-vis, ellipsometry, and atomic force microscopy. It was found that pNiPAAm with both types of end groups are incorporated into the films. We then identified a temperature-dependent adsorption behavior of proteins and liposomes to these PDA and pNiPAAm containing coatings by QCM-D and optical microscopy. Finally, a difference in myoblast cell response was found when these cells were allowed to adhere to these coatings. Taken together, these fundamental findings considerably broaden the potential biomedical applications of PDA films due to the added temperature responsiveness.
authors.affiliation: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Karthiga
authors.initials: K
authors.lastname: Panneerselvam
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Ogaki
authors.forename: Leticia
authors.initials: L
authors.lastname: Hosta-Rigau
authors.forename: Rebecca
authors.initials: R
authors.lastname: van der Westen
authors.forename: Bettina E B
authors.initials: BE
authors.lastname: Jensen
authors.forename: Boon M
authors.initials: BM
authors.lastname: Teo
authors.forename: Meifang
authors.initials: M
authors.lastname: Zhu
authors.forename: Brigitte
authors.initials: B
authors.lastname: Städler
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D000818:Animals; D002448:Cell Adhesion; D002460:Cell Line; D007211:Indoles / Q000737:chemistry*; D008081:Liposomes / Q000737:chemistry*; D051379:Mice; D015394:Molecular Structure; D032446:Myoblasts / Q000737:chemistry* / Q000166:cytology; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D011506:Proteins / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature
chemical_list: D000180:Acrylic Resins; D007211:Indoles; D008081:Liposomes; D011108:Polymers; D011506:Proteins; C568283:polydopamine; C052970:poly-N-isopropylacrylamide