title: Protein adsorption on derivatives of hyaluronic acid and subsequent cellular response.
abstract: The modulation of biological interactions with artificial surfaces is a vital aspect of biomaterials research. Serum protein adsorption onto photoreactive hyaluronic acid (Hyal-N(3)) and its sulfated derivative (HyalS-N(3)) was analyzed to determine extent of protein interaction and protein conformation as well as subsequent cell adhesion. There were no significant (p < 0.01) differences in the amount of protein adsorbed to the two polymers; however, proteins were found to be more loosely bound on HyalS-N(3) compared with Hyal-N(3). Fibronectin was adsorbed onto HyalS-N(3) in such an orientation as to allow the availability of the cell binding region, while there was more restricted access to this region on fibronectin adsorbed onto Hyal-N(3). This was confirmed by reduced cell adhesion on fibronectin precoated Hyal-N(3) compared with fibronectin precoated HyalS-N(3). Minimal cell adhesion was observed on albumin and serum precoated Hyal-N(3). The quartz crystal microbalance confirmed that specific cell-surface interactions were experienced by cells interacting with the fibronectin precoated polymers and serum precoated HyalS-N(3).
authors.affiliation: Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia. m.lord@unsw.edu.au
authors.forename: Megan S
authors.initials: MS
authors.lastname: Lord
authors.forename: Daniela
authors.initials: D
authors.lastname: Pasqui
authors.forename: Rolando
authors.initials: R
authors.lastname: Barbucci
authors.forename: Bruce K
authors.initials: BK
authors.lastname: Milthorpe
mesh_terms: D000327:Adsorption; D000818:Animals; D002448:Cell Adhesion; D002462:Cell Membrane / Q000378:metabolism; D002465:Cell Movement; D004337:Drug Carriers; D016503:Drug Delivery Systems; D005353:Fibronectins / Q000737:chemistry; D006820:Hyaluronic Acid / Q000737:chemistry*; D051379:Mice; D041681:NIH 3T3 Cells; D010777:Photochemistry / Q000379:methods; D011108:Polymers / Q000737:chemistry; D012867:Skin / Q000378:metabolism; D017550:Spectroscopy, Fourier Transform Infrared; D013582:Synovial Fluid / Q000378:metabolism
chemical_list: D004337:Drug Carriers; D005353:Fibronectins; D011108:Polymers; D006820:Hyaluronic Acid