title: Adenovirus type 5 intrinsic adsorption rates measured by surface plasmon resonance.
abstract: Intrinsic adsorption rates of whole adenovirus type 5 (Ad5) onto a diethylaminoethyl (DEAE) anion exchange surface are measured for the first time by surface plasmon resonance (SPR). Fitting SPR sensorgrams to a two-compartment mass transport reaction model distinguishes intrinsic adsorption rates from slow diffusive Ad5 mass transport. Ad5 is a widely used viral vector for gene therapy that binds electrostatically to surfaces of cells and synthetics such as membranes, chromatographic resins, and glass. Increasing NaCl concentration from 4.8 to 14.4mM shifts binding of whole Ad5 from diffusion control to a regime where both sorption and diffusion affect binding. Intrinsic adsorption rates for Ad5-DEAE interaction are 16 times faster than intrinsic adsorption rates for Ad5 fiber knob interacting with soluble extracellular domain of coxsackievirus adenovirus receptors (s-CAR).
authors.affiliation: Department of Chemical Engineering, University of Utah, Salt Lake City, UT 84112, USA. kroper@eng.utah.edu
authors.forename: D Keith
authors.initials: DK
authors.lastname: Roper
authors.forename: Shamit
authors.initials: S
authors.lastname: Nakra
mesh_terms: D000256:Adenoviridae / Q000737:chemistry* / Q000502:physiology; D000327:Adsorption; D015374:Biosensing Techniques / Q000379:methods*; D002460:Cell Line; D004983:Ethanolamines / Q000737:chemistry; D006046:Gold / Q000737:chemistry; D006801:Humans; D012680:Sensitivity and Specificity; D015398:Signal Transduction / Q000502:physiology; D020349:Surface Plasmon Resonance / Q000379:methods*; D013499:Surface Properties
chemical_list: D004983:Ethanolamines; D006046:Gold; C007369:2-diethylaminoethanol