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Updated: Jul 12, 2026

High-Density DNA and RNA microarrays - Photolithographic Synthesis, Hybridization and Preparation of Large Nucleic Acid Libraries
Published on: August 12, 2019
Replication of DNA microarrays prepared by in situ oligonucleotide polymerization and mechanical transfer
Joohoon Kim1, Richard M Crooks
1Department of Chemistry and Biochemistry, Texas Materials Institute, Center for Nano and Molecular Science and Technology, The University of Texas at Austin, 1 University Station, A5300, Austin, Texas 78712-0165, USA.
Abstract:
In this paper, we describe a method for replication of DNA microarrays. The approach involves in situ, enzymatic synthesis of a DNA complement array using a prefabricated master array, followed by mechanical transfer of the complement array to a second substrate. The new findings reported here include the following. DNA spots as small as approximately 100 microm can be faithfully replicated, replica arrays consisting of several different oligonucleotide sequences can be prepared, and such arrays are active toward hybridization of their complements. Up to 10 replicas can be prepared from a single master with no detectable progressive degradation of their activity. DNA master arrays consisting of long DNA templates (80-mer) can be replicated, as can large-scale master arrays consisting of approximately 2300 spots.
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