Abstract
The aryl hydrocarbon receptor (AhR) plays a crucial role in mediating xenobiotic responses, as well as regulating broader metabolic, differentiation, and stress response programs. In this study, we present a comprehensive long-read RNA sequencing dataset that examines transcriptional changes in the HepaRG human cell line during differentiation induced by dimethyl sulfoxide (DMSO) and acute activation of the AhR with 3-methylcholanthrene (3-MC). We identified 946 genes that were differentially expressed between the NonDiff and Diff conditions (303 genes upregulated and 643 genes downregulated), and 1786 genes that showed differential expression between Diff and Ind conditions (961 genes upregulated and 825 genes downregulated). The acute induction of 3-MC produced a robust AhR signature, characterized by the robust induction of CYP1A1 and CYP1B1, along with a coordinated downregulation of several constitutive hepatic genes involved in drug metabolism (e.g., CYP3A4 and CYP2C8). To facilitate further analysis and reuse of our data, we have provided processed gene-level count matrices, transcript per million (TPM) tables, and detailed differential expression results, as well as analysis scripts. This resource supports research into AhR biology, pharmacogene regulation, and the development of methods for long-read transcriptomics in liver models.