Direct Measurement of Intracellular Compound Concentration by RapidFire Mass Spectrometry Offers Insights into Cell Permeability

Gordon, Laurie JGlaxoSmithKline, Dept Biol Sci, Mol Discovery Res, Stevenage SG1 2NY, Herts, England (författare)

One of the key challenges facing early stage drug discovery is understanding the commonly observed difference between the activity of compounds in biochemical assays and cellular assays. Traditionally, indirect or estimated cell permeability measurements such as estimations from logP or artificial membrane permeability are used to explain the differences. The missing link is a direct measurement of intracellular compound concentration in whole cells. This can, in some circumstances, be estimated from the cellular activity, but this may also be problematic if cellular activity is weak or absent. Advances in sensitivity and throughput of analytical techniques have enabled us to develop a high-throughput assay for the measurement of intracellular compound concentration for routine use to support lead optimization. The assay uses a RapidFire-MS based readout of compound concentration in HeLa cells following incubation of cells with test compound. The initial assay validation was performed by ultra-high performance liquid chromatography tandem mass spectrometry, and the assay was subsequently transferred to RapidFire tandem mass spectrometry. Further miniaturization and optimization were performed to streamline the process, increase sample throughput, and reduce cycle time. This optimization has delivered a semi-automated platform with the potential of production scale compound profiling up to 100 compounds per day.

Allen, MorvenGlaxoSmithKline, Dept Biol Sci, Mol Discovery Res, Stevenage SG1 2NY, Herts, England (författare)
Artursson, PerUppsala universitet,Institutionen för farmaci(Swepub:uu)perartur (författare)
Hann, Michael M.GlaxoSmithKline, Dept Chem Sci, Mol Discovery Res, Stevenage SG1 2NY, Herts, England (författare)
Leavens, Bill J.GlaxoSmithKline, Dept Chem Sci, Mol Discovery Res, Stevenage SG1 2NY, Herts, England (författare)
Mateus, AndréUppsala universitet,Institutionen för farmaci(Swepub:uu)andma785 (författare)
Readshaw, SimonGlaxoSmithKline, Dept Chem Sci, Mol Discovery Res, Stevenage SG1 2NY, Herts, England (författare)
Valko, KlaraGlaxoSmithKline, Dept Chem Sci, Mol Discovery Res, Stevenage SG1 2NY, Herts, England (författare)
Wayne, Gareth J.GlaxoSmithKline, Dept Target & Pathway Validat, Mol Discovery Res, Stevenage SG1 2NY, Herts, England (författare)
West, AndyGlaxoSmithKline, Dept Chem Sci, Mol Discovery Res, Stevenage SG1 2NY, Herts, England (författare)
GlaxoSmithKline, Dept Biol Sci, Mol Discovery Res, Stevenage SG1 2NY, Herts, EnglandInstitutionen för farmaci (creator_code:org_t)

Ingår i:Journal of Biomolecular Screening: Elsevier BV21:2, s. 156-1641087-05711552-454X
Ingår i:SLAS Discovery: Elsevier BV21:2, s. 156-1642472-5552

Av författaren/redakt...: Gordon, Laurie J; Allen, Morven; Artursson, Per; Hann, Michael M.; Leavens, Bill J.; Mateus, André; visa fler...; Readshaw, Simon; Valko, Klara; Wayne, Gareth J.; West, Andy; visa färre...

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