Systematic literature review reveals suboptimal use of chemical probes in cell-based biomedical research

Jayden Sterling, Jennifer R. Baker, Adam McCluskey and Lenka Munoz ()
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Jayden Sterling: The University of Sydney
Jennifer R. Baker: The University of Newcastle
Adam McCluskey: The University of Newcastle
Lenka Munoz: The University of Sydney

Nature Communications, 2023, vol. 14, issue 1, 1-12

Abstract: Abstract Chemical probes have reached a prominent role in biomedical research, but their impact is governed by experimental design. To gain insight into the use of chemical probes, we conducted a systematic review of 662 publications, understood here as primary research articles, employing eight different chemical probes in cell-based research. We summarised (i) concentration(s) at which chemical probes were used in cell-based assays, (ii) inclusion of structurally matched target-inactive control compounds and (iii) orthogonal chemical probes. Here, we show that only 4% of analysed eligible publications used chemical probes within the recommended concentration range and included inactive compounds as well as orthogonal chemical probes. These findings indicate that the best practice with chemical probes is yet to be implemented in biomedical research. To achieve this, we propose ‘the rule of two’: At least two chemical probes (either orthogonal target-engaging probes, and/or a pair of a chemical probe and matched target-inactive compound) to be employed at recommended concentrations in every study.

Date: 2023
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DOI: 10.1038/s41467-023-38952-1

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