S&S® Serum Biomarker Chip Displays Specificity & Reproducibility for 120 Different Human Biomarker Profiles
Poster Feb 01, 2007
Christopher C. Zarozinski, Damon W. Pawlak, Brett A. Stillman, Michael A. Harvey and Breck O. Parker
We introduce a unique tool for the determination of relative abundances for human serum biomarkers. Conceptually similar to DNA microarrays, the S&S® Serum Biomarker Chip (SBC) is a single capture antibody array that was developed for comparative analysis of serum samples in order to identify differences or similarities in protein expression profiles.
The SBC array is manufactured on a nitrocellulose two-pad FAST® slide in which each pad contains 120 antibodies specific for circulating tumorrelated proteins printed in triplicate and arranged as four quadrants per pad. The Universal Linkage System (ULS™) protein labeling kit was employed to label serum proteins with either biotin or fluorescein prior to incubation with the SBC array.
Data from the array was collected using an Axon scanner to detect fluorescent emitted from Dyomics dyes DY™647 and DY™547 conjugated to Streptavidin and anti-Fluorescein antibody respectively. We show that fluorescently labeled biomarker proteins bind specifically to their capture antibody as determined via competition experiments.
The system was tested for reproducibility by running eleven individual experiments and measuring the variation in the signal intensity of each target biomarker. The results show that the CV is less than 20% for 105 of the 120 capture biomarker antibodies.
Preparation of Photonic Biosensors by Inkjet Printing TechnologyPoster
In order to enable local functionalization of label-free optical waveguide biosensors in a cost effective mass-fabrication compatible manner, we investigate surface modification employing inkjet printing of functional polymers and UV-curable benzophenone dextran.READ MORE
Microfluidic Extrusion of Cell-laden Hydrogel Fibers for 3D-BioprintingPoster
An overview on how the incorporation of microfluidic platforms in 3D-bioprinters can open new routes in the creation of heterogeneous, tissue-specific bio-constructs and in the high-throughput screening of bioinks compositions for regenerative medicine and in vitro tissue modeling.READ MORE
Magnetically Manipulated Sample Handling System on Digital Microfluidic PlatformsPoster
Herein we present a proof of concept demonstration of magnetic manipulation of an immiscible, microliter-scale ferrofluid droplet over a thin aqueous film on a solid substrate, using an array of square electromagnets.READ MORE