DRomics-shiny is a freely available tool for dose-response (or concentration-response) characterization from omics data. It is especially dedicated to omics data obtained using a typical dose-response design, favoring a great number of tested doses (or concentrations) rather than a great number of replicates (no need of three replicates).
After a first optional step which consists to import, check and if needed normalize/transform the data (step 1), the aim of the proposed workflow is to select monotonic and/or biphasic significantly responsive items (e.g. probes, metabolites) (step 2), to choose the best-fit model among a predefined family of monotonic and biphasic models to describe the response of each selected item (step 3), and to derive a benchmark dose or concentration from each fitted curve (step 4).
In the available version, DRomics supports single-channel microarray data (in log2 scale), RNAseq data (in raw counts) or metabolomics data (in log scale). Proteomics data could also be handled as metabolomics data when expressed in intensity (continuous variable) or as RNAseq when expressed in spectral counts, after carefully checking the validity of the assumptions made in processing the RNAseq data. In order to link responses across biological levels based on a common method, DRomics also handles apical data as long as they are continuous and follow a normal distribution for each dose or concentration, with a common standard error. DRomics should not be used on other types of data.
Next, for interpretation of results in light of a biological annotation, you can use the DRomicsInterpreter-shiny application .
Links and resources
The DRomics-shiny application runs on the shiny server of the LBBE with the develoment version of the DRomics package (available on Github ). DRomics is also an R package, available on CRAN and on this web page , where you can find also a vignette and a cheat sheet.
If there seems to be a problem with the application, please send an explanatory e-mail at aurelie.siberchicot - at - univ-lyon1.fr.
If you have any need that is not yet covered, any feedback on the package / Shiny app, or any training needs, feel free to email us at email@example.com . Issues can be reported on https://github.com/aursiber/DRomics/issues .
If you use Dromics Shiny App, you should cite:
DRomics, a workflow to exploit dose-response omics data in ecotoxicology. Delignette-Muller ML, Siberchicot A, Larras F, Billoir E (2023). Peer Community Journal. https://peercommunityjournal.org/articles/10.24072/pcjournal.325/
DRomics: a turnkey tool to support the use of the dose-response framework for omics data in ecological risk assessment. Larras F, Billoir E, Baillard V, Siberchicot A, Scholz S, Wubet T, Tarkka M, Schmitt-Jansen M and Delignette-Muller ML (2018). Environmental Science & Technology. https://doi.org/10.1021/acs.est.8b04752 (freely available at https://hal.science/hal-02309919 ).