Journal
TALANTA
Volume 188, Issue -, Pages 516-521Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2018.06.014
Keywords
Nanoreactor; Capillary electrophoresis; TDLFP; Activity assay; Thrombin
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Funding
- Fonds speciaux of the University of Liege (Liege, Belgium)
- Fonds Leon Fredericq (Liege, Belgium)
- Belgium National Fund for Scientific Research (FNRS)
- FNRS
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Capillary electrophoresis (CE) instrument was used for the generation of a robust and reliable nanoreactor for enzymatic assays in the context of antithrombotic drug screening. The activity of the screened molecules was monitored in a quick and fully automated fashion using only few nanoliters of reactants. To achieve this goal, the targeted enzyme (thrombin) and the chromogenic substrate with or without the screened inhibitor were injected as separate plugs. The mixing of the reactants was then realized using electrophoretically mediated micro-analysis (EMMA) or fast transverse diffusion of laminar flow profiles (TDLFP) procedure. The latest provided better mixing performance and was chosen to investigate the inhibitory potency of a fragment library. This very straightforward and fast CE activity assay showed results in good accordance with a previously developed CE affinity assay that confirms the potential of CE at the early stages of drug discovery, providing not only an efficient nanoscale bioreactor but also a selective and integrated separation device.
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