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Proteomics. 2004 Jan;4(1):20-6.

Immunostaining with dissociable antibody microarrays.

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Hypromatrix Inc, Worcester, MA 01604, USA.


The availability of a large number of biological materials such as cDNA, antibodies, recombinant proteins, and tissues has promoted the development of microarray technologies that make use of these materials in high-throughput screening assays. However, because microarray technologies have been less successful in examining proteins than DNA and mRNA, there is a need for improved protein microarray systems. To address this need, we developed an antibody microarray-based immunostaining method that can analyze the properties of a large number of proteins simultaneously. In this method, antibodies are arrayed and immobilized on a solid support and cells bearing antigens of interest are attached to a second support. Apposition of the two supports allows the antibodies to dissociate from the array support and bind to the cellular antigens. After separation of the supports, antigen-bound antibodies can be detected by standard secondary antibody techniques. These "dissociable" antibody arrays were used to detect both the expression and subcellular localization of a large number of specific proteins in various cultured cell types.

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