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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Dubiel, Evan A. Vermette, Patrick |
| Description | Author Affiliation: Dubiel EA ( Laboratoire de bio-ingénierie et de biophysique de l'Université de Sherbrooke, Department of Chemical and Biotechnological Engineering, Université de Sherbrooke, 2500 boulevard de l'Université, Sherbrooke, Québec, J1K 2R1 Canada.) |
| Abstract | It is shown that solution composition during immobilization plays a critical role in the properties of fibronectin (FN) surfaces and their bioactivity towards insulinoma (INS-1) cell function. X-ray photoelectron spectroscopy revealed FN grafting onto low-fouling carboxymethyl-dextran (CMD) surfaces was successful with solutions composed of 10 µM CaCl(2), 10 µM MgCl(2), 10 µM MnCl(2), and 10 µM and 1mM NaCl, but unsuccessful with those made of 150 mM NaCl or 1× PBS. Circular dichroism and photon correlation spectroscopy revealed that regardless of solution composition, no measurable differences in free FN conformation prevail. AFM imaging of FN-CMD revealed, while there are no quantitative differences in surface roughness, there are some subtle qualitative differences in topography. FN surface immobilization scheme does not influence INS-1 cell growth after 3 and 7 days regardless of the underlying substrate or solution composition. INS-1 cell insulin secretion in response to glucose is affected by the substrate and solution composition during FN immobilization. |
| File Format | HTM / HTML |
| ISSN | 09277765 |
| Volume Number | 95 |
| e-ISSN | 18734367 |
| Journal | Colloids and Surfaces B: Biointerfaces |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2012-06-15 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Chemistry Dextrans Chemistry Fibronectins Metabolism Insulin Secretion Insulinoma Pathology Cell Division Drug Effects Cells, Cultured Circular Dichroism Blood Pharmacology Glucose Humans Solutions Surface Properties Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Colloid and Surface Chemistry Medicine Physical and Theoretical Chemistry Surfaces and Interfaces Biotechnology |
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