RT Journal Article SR Electronic T1 LuminoCell: a versatile and affordable luminometer platform for monitoring in-cell luciferase-based reporters JF bioRxiv FD Cold Spring Harbor Laboratory SP 2022.01.28.478134 DO 10.1101/2022.01.28.478134 A1 Kamila Weissová A1 Bohumil Fafílek A1 Tomasz Radaszkiewicz A1 Canan Celiker A1 Petra Macháčková A1 Tamara Čechová A1 Jana Šebestíková A1 Aleš Hampl A1 Vítězslav Bryja A1 Pavel Krejčí A1 Tomáš Bárta YR 2022 UL http://biorxiv.org/content/early/2022/01/28/2022.01.28.478134.abstract AB Luciferase reporter assays represent a simple and sensitive experimental system in cell and molecular biology to study multiple biological processes. However, the application of these assays is often limited by the costs of conventional luminometer instruments and the versatility of their use in different experimental conditions. Therefore, we aimed to develop a small, affordable luminometer allowing continuous measurement of luciferase activity, designed for inclusion into various kinds of tissue culture incubators. Here we introduce LuminoCell - an open-source platform for the construction of an affordable, sensitive, and portable luminometer capable of realtime monitoring in-cell luciferase activity. The LuminoCell costs $40, requires less than 1 hour to assemble, and it is capable of performing real-time sensitive detection of both magnitude and duration of the activity of major signalling pathways in cell cultures, including receptor tyrosine kinases (EGF, FGF), WNT/β-catenin, and NF-κB. Additionally, we show that the LuminoCell is suitable to be used in cytotoxicity assays as well as for monitoring periodic circadian gene expression.Competing Interest StatementThe authors have declared no competing interest.