Thursday, November 8, 2007 - 9:10 AM
557c

Improved Statistical Approach To Quantification Of Tether Bond Dynamics

Ian J. Laurenzi, Chemical Engineering, Lehigh University, B330 Iacocca Hall, 111 Research Dr., Bethlehem, PA 18015

Employing the stochastic approach to chemical kinetics, an improved statistical technique is presented for the experimental design and analysis of receptor-mediated adhesion. Explicitly utilizing the randomness of transient pausing of cells in flow due to receptor-interactions, we apply the method of maximum likelihood to develop a robust statistical point estimate of the rate constant for the dissociation of receptor tether-bonds. The method additionally suggests an exact approach to the calculation of confidence intervals, and offers a direct methodology for the testing of hypotheses regarding the effects of force applied to tether bonds as well as the effects of multiple bonding.