High throughput Miniaturization of Cytochrome P450 Inhibition Screening Using the Echo® Liquid Handler

4 Nov 2014

This application note demonstrates transfer of enzymes, buffers, microsomes, inhibitors and substrates in small volumes using the Echo 500 series of liquid handlers, providing a sensitive and robust assay. Comparable IC50 values for four known CYP3A4 inhibitors are presented.

Echo® 555 Liquid Handler

Beckman Coulter Life Sciences

Echo® 555 liquid handler - the world's fastest acoustic dispensing platform for life science applications. The Echo® 555 liquid handler is the world’s fastest acoustic liquid handling platform for life science applications. Laboratories that demand very high throughput rely upon the Echo 555 liquid handler for round-the-clock trouble-free operation to enable the fastest discovery.The Echo 555 doubles the throughput of the Echo 550 and provides transfers from as many as 660,000 wells per day. Like the Echo 520 and Echo 550 liquid handlers, the Echo 555 uses "touchless" ADE transfer technology. ADE uses sound energy to transfer 2.5 nL droplets from Echo-qualified 384- and 1536-well source plates into 96-, 384-, 1536- and 3456-well destination plates.This unique touchless technology eliminates consumable tip costs, washing, and cross-contamination. Unsurpassed volumetric precision (≤ 8% CV) and accuracy (≤ 10% CV) ensure superior results. Independent studies have shown that Echo liquid handlers eliminate false negatives due to sample loss on tip surfaces in low-concentration transfers. Like the Echo 550 liquid handler, the Echo 555 liquid handler reports both fluid volume and DMSO hydration.Echo® 555 Liquid Handler Features: Tipless transfer, resulting in dramatic cost savings Accurate, precise movement of nanoliter-scale quantities, enabling assay miniaturization and further reducing costs Elimination of cross-contamination, carryover or leachates Better results through direct dilution of compounds, an improvement over serial dilution methods Improved information about sample integrity and improved transfer quality through measurement of DMSO hydration level Applications: Compound management Compound screening siRNA screening Biochemical assays Cell-based assays PCR Genotyping Gene expression

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High-Throughput ScreeningHigh-throughput screening (HTS) is an automated drug discovery technique for identification of active compounds against a compound library. Use HTS readers and integrated assay preparation / analysis workstations to screen your compounds. Identify active compounds against various HTS libraries, including membranes, proteins and peptides and HTS cell lines. Find the best high-throughput screening products in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.ADME-ToxicologyADME-toxicology (ADME-Tox) studies are used in pharmacology and pharmacokinetics to assess the activity/toxicity of drugs <i>in vivo</i> or <i>in vitro</i>. Find bioassays for absorption, distribution, metabolism, and excretion of drug molecules including cytotoxicity, transporter/permeability, metabolism and activity assays as well as hepatocytes and cell lines for ADME. Find the best ADME-toxicology products in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Cell-Based AssaysCell-based assays are used to monitor the presence, quantity and activities of a desired cellular analyte including drug molecules or biomarkers. This can reveal information on cell health (apoptosis, cytotoxicity, viability and proliferation assays), cell metabolism, cell migration and cell signaling mechanisms. Find the best cell-based assay products, kits and equipment with our peer reviewed product directory: compare products, check customer reviews and receiving pricing direct from manufacturers.ScreeningUsing robotics, data processing and control software, liquid handling devices and sensitive detectors, screening allows a researcher to quickly conduct millions of chemical, genetic or pharmacological tests.ADME
High throughput Miniaturization of Cytochrome P450 Inhibition Screening Using the Echo® Liquid Handler