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MLPA Automation Gemma Dennis GT Training day – Newcastle 23/11/11. MLPA @ Bristol. CMT (Charcot-Marie Tooth) Telomeres FH (Familial Hypercholesterolaemia) SMA (Spinal Muscular Atrophy) ARS (Axenfeld-Rieger Syndrome) TAR (Thrombocytopenia-Absent Radius syndrome). Why Automate?.
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MLPA AutomationGemma DennisGT Training day – Newcastle23/11/11
MLPA @ Bristol • CMT (Charcot-Marie Tooth) • Telomeres • FH (Familial Hypercholesterolaemia) • SMA (Spinal Muscular Atrophy) • ARS (Axenfeld-Rieger Syndrome) • TAR (Thrombocytopenia-Absent Radius syndrome)
Why Automate? • Solid Tissue screening by MLPA was introduced in July 2010, resulting in a large increase in sample numbers • Set-ups became complex and time consuming • Result quality was reduced due to the large run size • Automation = increased samples per set up, less staff time = cost saving.
MLPA Automation • Centralised booking system • All requests on one sheet – 96 well plate format • All information needed for set up
4. Denature DNA on Thermocycler DNA Rack 1 (4 x 6) 3. Transfer normalised DNA (5ul) 2. Transfer DNA (1ul >) 5. Transfer Probemix (1.5-3ul) 6. Overnight hybridisation on thermocycler 1. Transfer Water (1-29ul) DNA Dilution Plate Hybridisation Plate Thermocycler Water Reservoir Probe Mastermixes
9. Transfer Ligated MLPA Product (5ul) 7. Transfer Ligase Mix (16-32ul) 8. Ligation Rx on Thermocycler Reagent Rack PCR Plate Hybridisation Plate 8. Transfer PCR Mastermix (20ul) 10. PCR Rx on Thermocycler Thermocycler Thermocycler 11. Load on Analyser
MLPA Automation – Validation work • Initial development work based on existing Biomek workflows • Liquid handling was tested using coloured dyes (volume range 1.5-32µl) • Single kit was run to asses if adding probe mix, ligase mix and/or PCR mix at room temperature had any adverse affects • Large scale test was set up simultaneously with manual set up
MLPA Automation – Observed results • Robot was able to pipette all volume sizes accurately • There were no adverse affects to all mixes being added at room temperature • All results from automated set up were comparable to those from manual set up
MLPA Automation - Conclusions • Automation allows multiple MLPA tests to be set up simultaneously using a single plate • Technical work is simplified and can be set up in less time • System has ability for further tests to be added to the workflow without additional staff time being required
Any Questions? Acknowledgments Kenneth Smith Mark Greenslade Laura Yarram