PubMed · 5873296
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A G Schrodt, J A Gibbs, R E Cavanaugh. 1965. Quench correction by automatic external standardization.. https://doi.org/10.1007/978-1-4684-8622-3_16
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Novel CE-phosphoramidite (7a-e) and CPG (8a, c, d, e) reagents have been prepared from a unique 2-aminobutyl-1,3-propanediol backbone. The reagents have been used to directly label oligonucleotides with fluorescein, acridine, and biotin via automated DNA synthesis. The versatile 2-aminobutyl-1,3-propanediol backbone allows for labeling at any position (5', internal, and 3') during solid phase oligonucleotide synthesis. Multiple labels can be achieved by repetitive coupling cycles. Furthermore, the 3-carbon atom internucleotide phosphate distance is retained when inserted internally. Using this method, individual oligonucleotides possessing two and three different reporter molecules have been prepared.
HLA class II typing by DNA amplification and hybridization with allele-specific oligonucleotides has led to an improvement of the overall typing accuracy. In an attempt to apply this procedure to a large-scale analysis, we sought to implement an automation system using the Biomek 1,000 robotic work-station. This system allows a rapid preparation of many consecutive samples and avoids the risk of human errors. It is now routinely used in several laboratories.
We describe here the integration of image analysis and robotics to produce a fully automated colony picking/plate handling system. Biological tests were performed to verify its performance in terms of sterilisation and accuracy of picking. The machine was then used by a single operative to pick a 36,000 clone cDNA library in approximately 42 hrs over 5 days.